JPH1050036A - Recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily make various menues by making a menue with a main video data and a subvideo data and changing a character of the subvideo data in color and contrast. SOLUTION: The subvideo data of each pixel after decoding is changed in color and contrast in accordance with highlight information, and the subvideo data changed in color and contrast is supplied to a picture synthesizing part 64A in a D/A and reproducing processing part 64. Consequently, a main video data decoded by a video decoder part 58 is decoded by a decoder 62B in a subvideo decoder part 62, and is supplied to the picture synthesizing part 64A in the D/A and reproducing processing part 64 via a highlight processing part 62C. Therefore, the main video data and the subvideo data are synthesized by the picture synthesizing part 64A, and this synthesized picture is displayed on a monitor part 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a recording medium such as an optical disk for recording data of different types and types, such as compressed moving image data and audio data.

[0002]

2. Description of the Related Art Conventionally, video, LD (laser disk)
When providing a menu in video data such as, using a character generator etc. of the playback device regardless of the video,
The selected item (or confirmed item) is superimposed on the displayed video, or video data including the selected item is prepared.

In the former case, if a number such as a character code corresponding to the selected item is included in the video data, the position or the like of the selected item corresponding to the code number is determined by a reproducing device using a character generator or the like. It is possible to make the user recognize the selection result by changing the display color of the character generator corresponding to the selection item corresponding to the selected number in response to the user's selection. However, there is a drawback that it is virtually impossible to provide a character generator corresponding to all of them in the playback device without knowing what content and language to display the selection items.

In the latter case, the menu data is created as the video data, so that no burden is placed on the playback device. Since it is necessary to recall and display the data, it takes time until a new image for recognition is displayed, which causes a malfunction of the user.

That is, when preparing video data including the selection result, (a) a state in which none of the selection items “1.ABCDE” and “2.XYZ” is selected as video data for creating a menu (B) Video data with the selection item “1.ABCDE” selected (c) Video data with the selection item “2.XYZ” selected It is necessary to prepare three types of video data: is there. The playback device can display a menu screen reflecting the user's selection result by selecting necessary video data according to the user's selection result and replaying the video data.

However, in this case, a new reproduction process is executed, and it takes several seconds or more to display the menu screen reflecting the user's selection result, and the user is selected during the waiting time. There is a drawback that the possibility of executing an erroneous operation increases due to anxiety that it is not the case.

[0007] When a menu item is displayed on a playback device, the video data for creating the menu includes:
It is only necessary to prepare video data with no selection items, and the selection items to be displayed on the video data for creating the menu can be selected by the playback device by recording the corresponding character code at the same time. It is possible to easily create a state in which each selection item is selected according to the situation.

However, the size, shape, language, etc. of the characters that can be expressed as selection items are all determined by the capabilities of the playback device, and only a limited menu screen is available for the title creator who creates the menu. There is a drawback that it cannot be created and the load on the playback device increases.

[0009]

SUMMARY OF THE INVENTION The present invention utilizes video data having main video data and sub-video data,
It is an object of the present invention to enable a real-time response in accordance with a user's selection result with a small burden on a playback device.

According to the present invention, a menu is created by using main video data as a background image of a menu and sub-video data composed of user-selected items of a menu, and highlight information for a user-selected item of sub-video data is changed. It is an object of the present invention to be able to easily create various menus by changing the color and contrast of characters.

[0011]

A recording medium according to the present invention comprises:
A plurality of data units which are to be played back in chronological order, each of which is a plurality of data units which are played back within a certain time range, and whose data unit sequence is packetized playback data including video data and sub-picture data. In the case of a pack sequence and a control pack arranged at the head of the data pack sequence and describing control data for controlling the reproduction of the reproduced data, various contents of the video data can be confirmed or selected. At least one menu information corresponding to each of the above-described contents is recorded by the video data and the sub-picture data, the video data constituting the menu information is a background image, and the sub-picture data is Control data for controlling a user selection item which is a selection item, Correspondingly recorded in the control pack Deodeta.

According to the recording medium of the present invention, a management area is formed in a partial area and a data area is formed in another area, and the data area has at least one main video data and the same time as the main video data. At least one sub-picture data that can be reproduced is recorded in the band, and at least one menu information corresponding to each of the contents used for confirming or selecting various contents of the main picture data is stored in the band. Main video data and sub-video data are recorded, and the main video data constituting the menu information is a background image, the sub-video data is a user selection item, and the user selection item composed of the sub-video data is Control data is recorded in the data area corresponding to the corresponding main video data.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An optical disc reproducing apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a block diagram of an optical disc reproducing apparatus for reproducing data from an optical disc according to an embodiment of the present invention, and FIG. FIG. 3 shows the structure of the optical disk shown in FIG. 1 and FIG.

[0015] As shown in FIG.
Key operation / display unit 4, monitor unit 6, and speaker unit 8
Is provided. Here, the user operates the key operation / display unit 4
The recorded data is reproduced from the optical disk 10 by operating. The recording data includes video data, sub-video data, and audio data, which are converted into a video signal and an audio signal. The monitor unit 6 displays an image by an audio signal, and the speaker unit 8 generates sound by the audio signal.

As is already known, the optical disk 10 has various structures. The optical disk 10 includes, for example, a read-only disk on which data is recorded at a high density, as shown in FIG. As shown in FIG. 3, the optical disc 10 includes a pair of composite layers 18 and an adhesive layer 20 interposed between the composite layers 18. Each of the composite disk layers 18 includes a transparent substrate 14 and a recording layer, that is, a light reflecting layer 16. This disk layer 18 is arranged such that the light reflecting layer 16 is in contact with the surface of the adhesive layer 20. This optical disc 10 has a central hole 22
Around the center hole 22 on both sides thereof, a clamping area 24 for holding the optical disk 10 during rotation is provided. When the disk 10 is loaded into the optical disk device, the spindle of the spindle motor 12 shown in FIG. 2 is inserted into the center hole 22, and while the disk is rotated, the optical disk 10 is clamped by its clamping area 24. Is done.

As shown in FIG. 3, the optical disk 10 is provided around the clamping area 24 on both sides thereof.
Has an information area 25 in which information can be recorded. Each information area 25 has an outer peripheral area defined as a lead-out area 26 where information is not normally recorded, and an inner peripheral area adjacent to the clamping area 24 is similarly defined as a lead-in area 27 where information is not normally recorded. And
A space between the lead-out area 26 and the lead-in area 27 is defined as a data recording area 28.

In the recording layer 16 of the information area 25, usually, tracks are continuously formed spirally as areas in which data is recorded, and the continuous tracks are divided into a plurality of physical sectors. The sectors are numbered consecutively, and data is recorded based on the sectors.
The data recording area 28 of the information recording area 25 is an actual data recording area, and as described later, reproduction information, video data (main video data), sub-video data, and audio data are similarly stored in pits (that is, physical data). Change of target state)
It is recorded as. Read-only optical disk 10
In this example, a pit row is formed on the transparent substrate 14 by a stamper in advance, and a reflection layer is formed by vapor deposition on the surface of the transparent substrate 14 on which the pit row is formed, and the reflection layer is formed as the recording layer 16. . In the read-only optical disc 10, no groove is usually provided as a track, and a pit row formed on the surface of the transparent substrate 14 is defined as a track.

As shown in FIG. 1, the optical disk device 12 further includes a disk drive unit 30, a system CPU unit 50, a system ROM / RAM unit 52, a system processor unit 54, a data RAM unit 56, and a video decoder unit 58. , An audio decoder section 60, a sub-picture decoder section 62, and a D / A and data reproducing section 64. The system processor unit 54 includes a system time clock 54A and a register 54B.
The video decoder unit 58, the audio decoder unit 60, and the sub-picture decoder unit 62 similarly include system time clocks (STCs) 58A, 60A, and 62A.

As shown in FIG.
Is a motor drive circuit 11, a spindle motor 12,
An optical head 32 (that is, an optical pickup), a feed motor 33, a focus circuit 36, a feed motor drive circuit 37, a tracking circuit 38, a head amplifier 40, and a servo processing circuit 44 are provided. Optical disk 10
Is mounted on a spindle motor 12 driven by a motor drive circuit 11, and is rotated by the spindle motor 12. An optical head 32 for irradiating the optical disk 10 with a laser beam is placed below the optical disk 10. The optical head 32 is mounted on a guide mechanism (not shown). Feed motor drive circuit 3
7 is provided for supplying a drive signal to the feed motor 33. The motor 33 is driven by a drive signal to move the optical head 32 in the radial direction of the optical disc 10. The optical head 32 includes an objective lens 34 facing the optical disc 10. The objective lens 34 is moved along its optical axis in accordance with the drive signal supplied from the focus circuit 36.

In order to reproduce data from the optical disk 10, the optical head 32 irradiates the optical disk 10 with a laser beam via the objective lens 34. The objective lens 34 is finely moved in the radial direction of the optical disc 10 according to the drive signal supplied from the tracking circuit 38.
The objective lens 34 has a focusing circuit 36 such that its focal point is located on the recording layer 16 of the optical disk 10.
Is finely moved along the optical axis direction in accordance with the drive signal supplied from. As a result, the laser beam forms a minimum beam spot on the spiral track (ie, pit row), and the track is tracked by the light beam spot. The laser beam is reflected from the recording layer 16 and the optical head 3
Returned to 2. The optical head 32 converts the light beam reflected from the optical disk 10 into an electric signal, and the electric signal is supplied from the optical head 32 to the servo processing circuit 44 via the head amplifier 40. In the servo processing circuit 44,
A focus signal, a tracking signal, and a motor control signal are generated from the electric signal, and these signals are respectively referred to as a focus circuit 36, a tracking circuit 38, and a motor drive circuit 11.
To supply.

Therefore, the objective lens 34 is moved along its optical axis and the radial direction of the optical disk 10, its focal point is located on the recording layer 16 of the optical disk 10, and the laser beam focuses the minimum beam spot on the spiral track. Form. Further, the spindle motor 12 is rotated at a predetermined rotation speed by the motor drive circuit 11. as a result,
A pit row on the optical disk 10 is tracked by a light beam, for example, at a constant linear velocity.

A control signal as an access signal is supplied to the servo processing circuit 44 from the system CPU 50 shown in FIG. In response to this control signal, the servo processing circuit 4
4 supplies a head movement signal to a feed motor drive circuit 37, which converts the drive signal to a feed motor 3
3 will be supplied. Therefore, the feed motor 33
Is driven, and the optical head 32 is moved in the radial direction of the optical disk 10. Then, a predetermined sector formed on the recording layer 16 of the optical disk 10 is accessed by the optical head 32. The reproduced data is reproduced from the predetermined sector, supplied from the optical head 32 to the head amplifier 40, amplified by the head amplifier 40, and output from the disk drive unit 30.

The output reproduced data is stored in the system RO.
The data is stored in the data RAM unit 56 by the system processor unit 54 under the control of the system CPU unit 50 controlled by a program recorded in the M and RAM unit 52. The stored reproduction data is processed by the system processor 54 and classified into video data, audio data, and sub-picture data. The video data, audio data, and sub-picture data are respectively processed by the video decoder 58,
The data is output to the audio decoder section 60 and the sub-picture decoder section 62 and decoded. The decoded video data, audio data, and sub-picture data are converted by a D / A and reproduction processing circuit 64 into a video signal as an analog signal,
The video signal and the sub-video signal are supplied to the monitor 6 and the audio signal is supplied to the speaker unit 8 after being converted into the audio signal and subjected to the mixing process. As a result, an image is displayed on the monitor unit 6 by the video signal and the sub-video signal, and sound is reproduced from the speaker unit 8 by the audio signal.

In the optical disk reproducing apparatus shown in FIG. 1, a user operates a key operation and display section 4 on a front panel of the main body or a remote control apparatus connected to a remote control receiving section 4A in the main body by optical communication using infrared rays. By operating the remote control 5, the recorded data, that is, video data, sub-picture data and audio data are reproduced from the optical disk 10, and are converted into audio (audio) signals and video signals in the apparatus, and are monitored outside the apparatus. 6 and the speaker unit 8 reproduce the image and sound.

As shown in FIG. 4, the key operation and display unit 4 includes a power key 4a, a microphone input terminal 4b, a playback key 4c, a pause key 4d, a stop key 4e, a fast forward return key 4f, and a It is composed of an open / close key 4g for instructing taking-in and removing, a display 4h, insertion of the optical disk 10, taking-out opening 4i, and the like.

As shown in FIG. 5, the remote control 5 includes a power key 5a, a number key 5b, and a stop key 5.
c, play key 5d, pause key 5e, memory key 5
f, an open / close key 5g for instructing to take in and remove the optical disk 10, a fast forward / return key 5h, a key 5i, a repeat instruction and a repeat key 5 for instructing a range.
j, a menu key 5k for instructing display of a menu screen,
Title key 5 for instructing display of title menu screen
l, up, down, left, and right select keys 5m used for selecting an item when the menu screen is displayed.

The detailed operation of the optical disk apparatus shown in FIG. 1 will be described later in detail with reference to a logical format of the optical disk 10 described below.

The data recording area 28 from the lead-in area 27 to the lead-out area 26 of the optical disk 10 shown in FIG. 1 has a volume and file structure as shown in FIG. This structure complies with a specific standard as a logical format, for example, micro UDF (mi
cro UDF) and ISO9660. As described above, the data recording area 28 is physically divided into a plurality of sectors, and the physical sectors are assigned serial numbers. In the following description, the logical address is a micro UDF (micro UDF) and I
Logical sector number (LS) as defined by SO9660
N), and the logical sector is 2048 bytes, similarly to the size of the physical sector, and has a logical sector number (LS
In N), a serial number is added together with the ascending order of the physical sector numbers.

As shown in FIG. 6, the volume and file structure has a hierarchical structure, and includes a volume and file structure area 70, a video manager 71, at least one or more video title sets 72, and another recording area 73. doing. These areas are partitioned on the boundaries of logical sectors. Here, one logical sector is defined as 2048 bytes as in the conventional CD. Similarly,
One logical block is also defined as 2048 bytes, so
One logical sector is defined as one logical block.

The file structure area 70 contains a micro UDF
The video manager 71 is stored in the system ROM / RAM unit 52 via the description of this management area defined in ISO9660. The video manager 71 describes information for managing a video title set as described with reference to FIG.
, And a plurality of files 74 starting with. Each video title set 72 stores compressed video data, audio data, sub-picture data, and their reproduction information, as described later, and is similarly composed of a plurality of files 74. Here, the plurality of video title sets 72 are limited to a maximum of 99,
Further, the number of files 74 (File # j to File # j + 9) constituting each video title set 72 is set to a maximum of ten. These files are similarly partitioned at logical sector boundaries.

In another recording area 73, information that can use the above-described video title set 72 is recorded.
The other recording area 73 need not always be provided.

As shown in FIG. 7, the video manager 71
Includes three items each corresponding to each file 74. That is, the video manager 71 includes a video manager information (VMGI) 75 and a video object set (VMGM) for the video manager information menu.
_VOBS) 76 and a backup (VMGI_BUP) 77 of video manager information.
Here, the video manager information (VMGI) 75 and the backup 77 of the video manager information (VMGI)
_BUP) 77 is a required item, and is a video object set (V) for the video manager information menu.
MGM_VOBS) 76 is optional.
This video object set for VMGM (VMGM
_VOBS) 76 stores video data, audio data, and sub-picture data of a menu related to the video of the optical disc managed by the video manager 71.

The volume name of the optical disc, such as the reproduction of video described later by the VMGM video object set (VMGM_VOBS) 76,
A description of the audio and the sub-picture accompanying the volume name display is displayed, and selectable items are displayed in the sub-picture. For example, a video object set for VMGM (VMG
(M_VOBS) 76, the fighting pose of Boxer X is reproduced in the video data along with the fact that the optical disc is video data storing a game up to a certain boxer world champion, that is, the volume name such as the glorious history of Boxer X. At the same time, his theme song is displayed in audio and his chronology is displayed in the sub-picture. In addition, the user is asked whether to select the language of the game narration, such as English or Japanese, as a selection item, and whether to display subtitles in another language in the sub-video, or to select subtitles in any language. The question is asked. This VMGM video object set (V
The MGM_VOBS) 76 allows the user, for example, to prepare to watch the video of the game of Boxer X, using English subtitles in English and Japanese subtitles.

Here, the structure of the video object set (VOBS) 82 will be described with reference to FIG. FIG. 8 shows an example of a video object set (VOBS) 82. This video object set (VO
BS) 82 includes three types of video object sets (VOB) for two menus and a title.
S) 76. That is, the video object set (V
The OBS) 82 includes a video title set menu video object set (VTSM_VOBS) in a video title set (VTS) 72 as described later.
95 and a video object set (VTSTT) for titles of at least one or more video title sets.
_VOBS) 96, and each video object set 82 has a similar structure except for its use.

As shown in FIG. 8, a video object set (VOBS) 82 is defined as a set of one or more video objects (VOBs) 83, and the video objects 8 in the video object set (VOBS) 82 are defined.
3 are provided for the same purpose. Normally, a menu video object set (VOBS) 82 is composed of one video object (VOB) 83 and stores data for displaying a plurality of menu screens. On the other hand, the video object set (V
The TSTT_VOBS 82 generally includes a plurality of video objects (VOBs) 83.

Here, a video object (VOB) 8
3 is equivalent to the video data of each game of the boxer X in the case of the above-mentioned boxing video, and reproduces, for example, the eleventh game to challenge the world champion by designating a video object (VOB) in the video. can do. Also, a menu video object set (VTSM_VOB) of the video title set 72 is used.
In S) 95, the menu data of the game of the boxer X is stored, and a specific game, for example, the eleventh game to challenge the world champion can be designated according to the display of the menu. In a normal one-story movie, one video object (VOB) 83 corresponds to one video object set (VOBS) 82, and one video stream corresponds to one video object set (VOB).
S) is completed at 82. In the case of an animation collection or an omnibus movie, a plurality of video streams corresponding to each story are provided in one video object set (VOBS) 82, and each video stream is stored in a corresponding video object. Therefore, the audio stream and sub-picture stream associated with the video stream are also included in each video object (VO).
B) It will be completed in 83.

The video object (VOB) 83 includes
An identification number (IDN # j) is assigned, and the video object (VOB) 83 can be specified by the identification number. The video object (VOB) 83 is 1
Alternatively, it is composed of a plurality of cells 84. A normal video stream is composed of a plurality of cells, but a menu video stream, that is, a video object (VOB) 83 may be composed of one cell 84 in some cases. Similarly, the cell includes an identification number (C_IDN #
j), and the cell 84 is specified by the cell identification number (C_IDN # j). When the angle is changed, which will be described later, the angle is changed by specifying the cell number.

Here, the angle means changing the viewing angle in the field of video, and in the boxing example,
This means that the same knockout scene can be viewed from various angles, such as a scene viewed from the champion side, a scene viewed from the challenger side, and a scene viewed from the judge's side. The angle may be selected according to the user's preference, or the same scene may be automatically changed in the flow of the story while changing the angle. Also, when selecting an angle,
If the angle changes back to the beginning of the same scene, for example, the angle changes at the scene when the boxer enters the counter, and the counter changes again, and if the angle changes in the scene following the scene, for example, the boxer changes the counter The angle may change the moment the punch is inserted after the insertion. A navigation pack 86, which will be described in detail later, is provided in a video object unit (VOBU) 83 so that any angle can be changed.

As shown in FIG. 8, each cell 84 includes one or a plurality of video object units (VOBU) 85, usually a plurality of video object units (VOBU).
85. Here, the video object unit (VOBU) 85 is defined as a pack sequence having one navigation pack (NV pack) 86 at the top. That is, the video object unit (VOB)
U) 85 is defined as a set of all packs recorded from one navigation pack 86 to immediately before the next navigation pack. The playback time of the video object unit (VOBU) corresponds to the playback time of video data composed of one or more GOPs included in the video object unit (VOBU) as shown in FIG. Is 0.4 seconds or more and 1
It is determined not to be larger than seconds. In MPEG, one GOP is usually 0.5 seconds, and is defined as compressed screen data for reproducing about 15 images during that time.

As shown in FIG. 8, when the video object unit includes video data, a video pack (V pack) 88, a sub-picture pack (SP pack) 90, and an audio pack (A pack) defined by the MPEG standard.
A video data stream is formed by arranging GOPs composed of the GOPs 91. Regardless of the number of GOPs, a video object (VOBU) 83 is determined on the basis of the playback time of the GOP, and at the beginning thereof. , A navigation pack (NV pack) 86 is always arranged. In addition, even in the case of reproduction data of only audio and / or sub-picture data, reproduction data is configured with this video object unit as one unit. That is, even if a video object unit is composed of only audio packs,
As with the video object of the video data, an audio pack to be reproduced within the reproduction time of the video object unit to which the audio data belongs is stored in the video object unit. The procedure of reproducing these packs will be described later in detail together with the navigation pack (NV pack) 86.

Referring again to FIG.
1 will be described. The video management information 75 arranged at the head of the video manager 71 describes information for managing a video title set (VTS) 72 such as information for searching for a title and information for reproducing a video manager menu. At least four in the order shown in FIG.
Tables 78, 79, 80, and 81 are recorded. Each of the tables 78, 79, 80, 81 matches the boundary of the logical sector. Video management information management table (VMGI_MAT) 78 which is the first table
Is an essential table that describes the size of the video manager 71, the start address of each piece of information in the video manager 71, the attribute information on the video object set (VMGM_VOBS) 76 for the video manager menu, and the like.

The title search pointer table (TT) which is the second table of the video manager 71
_SRPT) 79 includes an entry program chain of a video title included in a volume in the optical disc 10 which can be selected in accordance with the input of a key of the apparatus and a title number from the display unit 4 or the selection of a title number by the remote controller 5 (see FIG. EPGC).

Here, the program chain 87 is a set of programs 89 for reproducing the story of a certain title as shown in FIG. Is done. Therefore, the user can use the program chain 8
By designating the program 89 in 7, the movie can be viewed from a specific scene of the movie.

The video title set attribute table (VTS_A) which is the third table of the video manager 71
In the (TRT) 80, attribute information defined in the video title set (VTS) 72 in the volume of the optical disc is described. That is, the number of video title sets (VTS) 72 and the video title sets (V
TS) 72, video attributes, for example, video data compression method, etc., audio stream attributes, for example, audio encoding mode, etc., sub-picture attributes, for example, sub-picture display type, etc. Have been described.

A video manager menu PGCI unit table (VMGM_PGCI_UT) 81, which is a fourth table of the video manager 71, describes information on a video object set (VMGM_VOBS) 76 for the video manager menu.

The video manager menu PGCI unit table (VMGM_PGCI_UT) 81 is an essential table when the video manager menu (VMGM) exists in the video object set (VMGM_VOBS) 76 for the video manager menu.

The video management information management table (VMGI_
MAT) 78 and the title search pointer table (TT_SRPT) 79 will now be described in detail with reference to FIGS. 10, 11, 12, and 13.

As shown in FIG. 10, the video management information management table (VMGI_MAT) 78 includes an identifier (VMG_ID) of the video manager 71 and a logical block (one logical block is 2048 bytes as described above).
, The size of the video management information (VMGI_SZ), the version number (VERN) relating to the standard of the optical disk, commonly known as a digital versatile disk (digital versatile disk: hereinafter simply referred to as DVD), and the category of the video manager 71 (VMG_CA)
T) is described.

Here, in the category (VMG_CAT) of the video manager 71, a flag or the like indicating whether or not the DVD video directory is prohibited from being copied is described. Also, this table (VMGI_MAT) 78
Contains the identifier of the video set (VLMS_ID), the number of video title sets (VTS_Ns), and the identifier of the supplier of the data recorded on this disc (PVR_I
D), the start address (VNGM_VOBS_SA) of the video object set (VMGM_VOBS) 76 for the video manager menu, the end address (VMGI_MAT_EA) of the video manager information management table (VMGI_MAT) 78, and the start of the title search pointer table (TT_SRPT) 79 The address (TT_SRPT_SA) is described. Also, this table 78 includes a video manager menu PGCI unit table (VMGM_PGC).
I_UT) 81 start address (VMGM_PGC)
I_UT_SA). Video manager menu PGCI unit table (VMGM_PG
If there is no CI_UT) 81, “00000000h” is described in the start address. VMGI_
End address of MAT78 (VMGI_MAT_EA)
TT_SRPT 79 and the start address (TT_S
RPT_SA) is described by the number of logical blocks relative to the first logical block.

The table 78 further includes an attribute table (VTS_A) of the video title set (VTS) 72.
TRT) 80 start address (VTS_ATRT_
SA) is the VMGI manager table (VMGI_M
AT) 71, and the video attribute (VMGM_V_ATR) of the video manager menu (VMGM) is described. Furthermore, this table 78 includes the number of audio streams (VM) in the video manager menu (VMGM).
GM_AST_Ns), audio stream attributes (VMGM) in the video manager menu (VMGM)
_AST_ATR), video manager menu (V
MGM) number of sub-video streams (VMGM_SPST)
_Ns) and Video Manager Menu (VMGM)
Attribute of the sub-video stream (VMGM_SPST_AT)
R).

Title search pointer table (TT)
_SRPT) 79 first contains information (TT_SRPT) of the title search pointer table as shown in FIG.
I) 92 is described, and then input numbers 1 to n (n ≦ 9)
9) Title search pointer to (TT_SRP)
Are continuously described as many as necessary. Playback data of one title, for example, in the volume of this optical disc, for example,
If only one title of video data is stored, one title search pointer (TT_SRP) 9
Only 3 are described in this table (TT_SRPT) 79.

The title search pointer table information (TT_SRPTI) 92 includes the number of title search pointers (TT_Ns) and the title search pointer table (TT_SRPT) 79 as shown in FIG.
Is described (TT_SRPT_EA). This address (TT_SRPT_EA) is stored in the title search pointer table (TT_SRPT) 7
It is described by the number of bytes relative to the first byte of 9.
Also, as shown in FIG. 13, each title search pointer (TT_SRP) includes a number of parts of title (PTT_Ns) as a number of chapters (number of programs), a video title set number (VTSN), and a title number of the video title set 72 ( VTS_TTN) and the start address of the video title set 72 (VTS_SA)
Is described.

The title search pointer (TT_SR)
A video title set (VTS) 72 to be reproduced is specified by the contents of P) 93, and the storage position of the video title set 72 is specified. The start address (VTS_SA) of the video title set 72 is
The title set specified by the video title set number (VTSN) is described by the number of logical blocks.

Details of the description contents in the video manager menu PGCI unit table (VMGM_PGCI_UT) 81 are shown in FIGS.
Next, a description will be given with reference to FIGS.

The video manager menu PGCI unit table (VMGM_PGCI_U) shown in FIG.
T) 81 is a mandatory item when a video object set (VMGM_VOBS) 76 for a video manager menu is provided, and is a program chain for reproducing a video manager menu (VMGM) provided for each language. Is described. By referring to the video manager menu PGCI unit table (VMGM_PGCI_UT) 81, a video object set (VMGM_V
The program chain of the language specified in OBS) 76 can be obtained and reproduced as a menu.

This video manager menu PGCI
Unit table (VMGM_PGCI_UT) 81
Is the video manager menu P as shown in FIG.
GCI unit table information (VMGM_PGCI_U
TI) 81A, n video manager menu language unit search pointer (VMGM_LU_SRP) 8
1B, n video manager menu language units (VMGM_LU) 81C, which are described in that order.

Video manager menu PGCI unit table information (VMGM_PGCI_UTI) 81
A describes the information of this table 81, and the video manager menu PGCI unit search pointer (VMGM_LU_SRP) 81B stores # 1 to #n.
The video manager menu language unit (VMGM_LU) 81C described in the order corresponding to the video manager menus up to and including the language code and described in the order corresponding to the video manager menus # 1 to #n. Describes the pointer to be searched. In addition, each of the video manager menu language units (VMGM_LU) 81C includes:
The category and start address of the program chain of the corresponding video manager menu are described.

More specifically, the video manager menu PGCI unit table information (VMGM_PGCI
_UTI) 81A includes a video manager menu language unit (VMGM_LU) 8 as shown in FIG.
The number of 1C is described as a parameter (VMGM_LU_Ns), and the end address of the video manager menu language unit (VMGM_LU) 81C is described as a parameter (VMGM_PGCI_UT_EA). Also, as shown in FIG. 16, the video manager menu PGCI unit search pointer (VMG
The M_LU_SRP) 81B describes a video manager menu language code as a parameter (VMGM_LCD), and the start address of the video manager menu language unit (VMGM_LU) 81C is described as a parameter (VMGM_LU_SA). Further, as shown in FIG. 17, the video manager menu language unit information (VM
GM_LUI) 81D, video manager menu P
GC information search point (VMGM_PGCI_SR
P) 81E, video manager menu PGC information (VMGM_PGCI) 81F, and are described in that order. In the video manager menu language unit information (VMGM_LUI) 81D, information of this table 81C is described, and (VMGM_PGCI_
The (SRP) 81E is described in the order corresponding to the video manager menu from # 1 to #n, describes the category of the program chain of the video manager menu, and is described in the video manager menu from # 1 to #n. The video manager menu PGC information search information (VMGM) described in the corresponding order
_PGCI) 81F is described.

The video manager menu PGC information search information (VMGM_PGCI) 81F contains information on the program chain of the video manager menu,
That is, the VMGM program chain information (VMGM_P
GCI).

More specifically, the video manager menu language unit information (VMGM_LUI) 81D includes
As shown in FIG. 18, the number of VMGM program chain information (VMGM_PGCI) 81F is determined by the parameter (VM).
GM_PGCI_Ns) and the video manager menu language unit information (VMGM_L).
The end address of the UI) 81D is the parameter (VMGM_
LUI_EA). As shown in FIG. 19, the video manager menu PGC information search point (VMGM_PGCI_SRP) 81E includes the category of the program chain of the video manager menu as a parameter (VMGM_PGC_CA).
T), and the start address of the VMGM program chain information (VMGM_PGCI) 81F is described as a parameter (VMGM_PGCI_SA).

In the category (VMGM_PGC_CAT) of the program chain of the video manager menu, a flag indicating whether or not this PGC has been entered and a menu ID indicating whether or not this PGC is a menu are described. When "0010" is described as the menu ID, it means a title menu.

Next, the structure of the logical format of the video title set (VTS) 72 shown in FIG. 6 will be described with reference to FIG. Each video title set (V
In the TS) 72, four items 94, 95, 96, and 97 are described in the order of description as shown in FIG. Each video title set (VTS) 72 includes one or more video titles having a common attribute, and management information on the video title 72, for example, information for an entry search point, a video object set Information for reproducing 96, information for reproducing the title set menu (VTSM), and attribute information of the video object set 72 are described in the video title set information (VTSI).

This video title set information (VTS
I) Backup of video title set (VT) 94
S) 72. Video title set information (VTSI) 94 and a backup of this information (VTSI)
_BUP) 97, a video object set (VTSM_VOB) for a video title set menu.
S) 95 and a video object set (VTSTT_VOBS) 96 for a video title set title are arranged. Any video object set (V
TSM_VOBS and VTSTT_VOBS) 95, 9
6 has the structure shown in FIG. 8 as already described.

Video title set information (VTSI) 9
4. Backup of this information (VTSI_BUP) 97
A video object set (VTSTT_VOBS) 96 for a video title set title is an essential item for the video title set 72, and a video object set (VTSTT_VOBS) for a video title set menu.
TSM_VOBS) 95 is an option provided as needed.

Video title set information (VTSI) 9
4 includes five tables 98, 99, as shown in FIG.
The five tables 98, 99, 100, 101, and 111 are aligned with the boundaries between logical sectors. Video title set information management table (VTSI_MAT) which is the first table
Reference numeral 98 denotes an essential table, which is the size of the video title set (VTS) 72 and the size of the video title set (VT).
The start address of each information in the S) 72 and the attribute of the video object set (VOBS) 82 in the video title set (VTS) 72 are described.

The video title set direct access pointer table (VTS_DA) which is the second table
PT) 99 is an optional table provided as necessary, and is a video title that can be selected in accordance with the input of a title number from the key operation / display unit 4 of the apparatus or the selection of a title number by the remote controller 5. The program chain (PG included in the set 72)
C) and / or program (PG).

The video title set program chain information table (VTS_PGCI) which is the third table
T) 100 is an essential table that describes VTS program chain information (VTS_PGCI).

Video title set time search map table (VTS_MAPT) 1 which is the fourth table
01 is an optional table provided as needed, and is a title set 7 to which the map table (VTS_MAPT) 101 for a certain display time belongs.
2 describes information on a recording position of video data in each program chain (PGC).

The fifth table, the video title set menu PGCI unit table (VTSM_PG)
CI_UT) 111 is a video object set (VTSM_VOBS) for a video title set menu.
95 is a mandatory item when a video title set menu (VTS) is provided for each language.
Information on a program chain for reproducing M) is described. This video title set menu PGCI unit table (VTSM_PGCI_U
By referring to (T) 111, the program chain of the specified language in the video object set (VTSM_VOBS) 95 can be obtained and reproduced as a menu.

Next, the video title information manager table (VTSI_MAT) 98 and the video title set program chain information table (VTS_PGCIT) 100 shown in FIG. 20 are shown in FIGS.
0 will be described.

FIG. 21 shows the description contents of the video title information manager table (VTSI_MAT) 98. In this table (VTSI_MAT) 98,
Video title set identifiers (VTS_I
D), the size of the video title information (VTSI_S
Z), the version number of this DVD video standard (VER
N), and the attribute (VTS_CAT) of the title set 72 are described. This table (VTSI_MAT)
In 98, the start address (VTSM_VOBS_SA) of the video object set (VTSM_VOBS) 95 of the VTS menu (VTSM) is described as a relative logical block (RLBN) from the first logical block of the video title set (VTS) 72. Start address (VTSTT_VOBS) of video object set for title in set (VTS)
_SA) is a logical block (RLBN) relative to the first logical block of the video title set (VTS) 72
Is described.

Further, this table (VTSI_MAT)
98 includes a video title set information management table (V
TSI_MAT) 98 end address (VTSI_MA)
T_EA) is described in the relative number of blocks from the first byte of the table (VTSI_MAT) 98, and the video title set direct access pointer table (V
TS_PTI_SRPT) 99 start address (V
TS_SRPT_SA) is described by the relative number of blocks from the first byte of the video title set information (VTSI) 94.

Further, this table (VTSI_MA
T) 98, the start address (VTS_PGCIT_SA) of the video title set program chain information table (PGCIT) 100 is described as the relative number of blocks from the first byte of the video title set information (VTSI) 94, and the video title set (VTS) The start address (VTS_TMAPT_SA) of the time search map (VTS_TMAPT) 101 is described as a logical sector relative to the first logical sector of the video title set (VTS) 72. This table (VTS
I_MAT) 98 includes a video title set menu PGCI unit table (VTSM_PGCI_U).
T) start address (VTSM_PGCI_UT_)
SA) is described by the relative number of blocks from the first byte of the video title set information (VTSI) 94. If there is no video manager menu PGCI unit table (VMGM_PGCI_UT) 81, “000000000h” is described in the start address.

The table (VTSI_MAT) 98 includes a video object set (VTSM_VOBS) 95 for the video title set menu (VTSM) in the video title set (VTS) 72 and a title (VTSTT) of the video title set (VTS). Video Object Set (VTST_VOBS) 9
6 describes a video attribute (VTS_V_ATR) and the number of audio streams (VTS_AST_Ns) of a video object set (VTSTT_VOBS) 96 for the title (VTSTT) of the video title set in the video title set (VTS) 72.

Here, the video attribute (VTS_V_AT)
R) describes the video compression mode, the frame rate of the TV system, the display aspect ratio when displayed on a display device, and the like.

In the table (VTSI_MAT) 98,
Video object set (VTST_VOBS) 9 for title (VTSTT) of video title set (VTS) 72 in video title set (VTS) 72
6 audio stream attribute (VTS_AST_AT)
R). This attribute (VTS_AST_A
TR) describes an audio encoding mode describing how the audio was encoded, how many bits of audio quantization were performed, the number of audio channels, an audio language code, and the like. Further, the table (VTSI_MAT) 98 includes a video object set (VTST_VOBS) 96 for the title (VTSTT) in the video title set (VTS) 72.
Of sub-video streams (VTS_SPST_Ns) and attributes of each sub-video stream (VTS_SPST_AT)
R). The attribute (VTS_SPST_ATR) of each sub-picture stream describes the encoding mode of the sub-picture, the display type of the sub-picture, the language code of the sub-picture, and the like.

This table (VTSI_MAT)
98 has a video title set menu (VTSM)
Audio streams (VTSM_AST_N)
s), audio stream attribute (VTSM_AST_
ATR), the number of sub-picture streams (VTSM_SPST)
_Ns) and the attribute of the sub-picture stream (VTSM_S).
PST_ATR) is described.

As shown in FIG. 22, the attributes (VTS_AST_ATR) of the audio stream of the video title set (VTS) are changed from bit number b63 to bit number b48 in the audio coding mode, multi-channel extension, audio type, and audio application. The ID, quantization, sampling frequency, reservation, and number of audio channels are described. The bit number b47 to bit number b40 and the bit number b39 to bit number b32 describe the language code of this audio stream as a specific code, Bit number b
From 31 to bit number b24, a reservation for a specific code is provided. The bit numbers b23 to b8 are reserved for future use, and the application information is described in the bit numbers b7 to b0. Here, when there is no VTS menu video object set (VTSM_VOBS) 95, or
If there is no audio stream in the video object set, bit numbers b63 to b0
"0" is described in each bit of.

The specific codes are b47 to b40 and b3
9 to b32, where when the type of the audio stream is language, that is, audio,
The code of the language defined by ISO-639 is described by a language symbol. If the type of audio stream is not language, i.e. voice, this area is reserved.

In the sub-picture stream attribute (VTS_SPST_ATR) of the video object set (VTST_VOBS) 96 for VTSTT, as shown in FIG. Type and sub-picture type are described, and bit number b39 to bit number b3
2, the language code of this sub-picture stream is described as a specific code in bit numbers b31 to b24 as bit codes, bit numbers b23 to b16 are reserved for specific codes, and bit numbers b15 to bit numbers b
Reference numeral 8 describes an extension of a specific code. Further, bit numbers b7 to b0 are reserved.

The VTS program chain information table (VTS_PGCIT) 100 has a structure as shown in FIG. This information table (VTS_PGC)
IT) 100 includes a VTS program chain (VTS
_PGC) is described (VTS_PGCI), and the first item is a VTS program chain (VT).
S_PGC) information table (VTS_PGCI)
T) 100 information (VTS_PGCIT_I) 102 is provided. This information (VTS_PGCIT_I)
Following this information table (VTS_PGCI)
T) 100 includes this information table (VTS_PGCI).
T) VTS program chain in 100 (VTS_P
VTS_PGCI to search the VTS program chain (VTS_PGC) by the number of GCs (# 1 to #n)
Search pointer (VTS_PGCIT_SRP) 103
Is provided, and finally a VTS program chain (VTS
_PGC) corresponding to each VTS (# 1 to #n).
Information (VTS_PGCI) 104 relating to the program chain (VTS_PGC) is provided.

Information (VTS_PGC) of VTS program chain information table (VTS_PGCIT) 100
IT_I) 102 has a VTS as shown in FIG.
Number of program chains (VTS_PGC) (VTS_PGC)
PGC_Ns) is described as the content, and the end address (VTS_PGCIT_EA) of this table information (VTS_PGCIT_I) 102 is described in this information table (V
TS_PGCIT) 100 is described by the relative number of bytes from the first byte.

The VTS_PGCIT search pointer (VTS_PGCIT_SRP) 103 has an attribute (VTS_PC) of the program chain (VTS_PGC) of the video title set (VTS) 72 as shown in FIG.
GC_CAT) and VTS_PGC information (VTS_PGCI) by the relative number of bytes from the first byte of the VTS_PGC information table (VTS_PGCIT) 100
Is described (VTS_PGCI_SA). Here, the VTS_PGC attribute (VTS_P
GC_CAT) has, for example, an entry program chain (entry PG
C) is described. Usually, an entry program chain (PGC) is described before a program chain (PGC) that is not an entry program chain (PGC).

The PGC information (VT) in the video title set
S_PGCI) 104 describes four items as shown in FIG. This PGC information (VTS_PG
The CI) 104 first describes program chain general information (PGC_GI) 105 of essential items, followed by at least three items 106, 107 and 108 which are mandatory only when there is a video object. Have been. That is, as the three items, a program chain program map (PGC_PGMAP) 1
06, the cell reproduction information table (C_PBIT) 107 and the cell position information table (C_POSIT) 108
It is described in the GC information (VTS_PGCI) 104.

Program chain general information (PGC_G
I) 105 includes a program chain (PGC) category (PGC_CAT), program chain (PGC) contents (PGC_CNT), and program chain (PGC) playback time (PGC_P) as shown in FIG.
B_TIME). The PGC category (PGCI_CAT) describes whether or not copying of the PGC is possible and whether or not the reproduction of the program in the PGC is continuous or random. The content of the PGC (PGC_CNT) describes the configuration content of the program chain, that is, the number of programs, the number of cells, and the number of angles in the program chain. PGC playback time (PGC_PB_TIME)
Describes the total playback time of the program in the PGC. In the reproduction time, the reproduction time of the program when the program in the PGC is continuously reproduced regardless of the reproduction procedure is described. If there is an angle mode, the playback time of the angle cell number 1 indicates the playback time of that angle.

Also, program chain general information (PG
The C_GI) 105 describes PGC sub-picture stream control (PGC_SPST_CTL), PGC audio stream control (PGC_AST_CTL), and PGC sub-picture palette (PGC_SP_PLT). PGC sub-picture stream control (PGC_SPST_
CTL) describes the number of sub-images that can be used in PGC, and controls PGC audio stream control (PGC_AST).
_CTL) similarly describes the number of audio streams that can be used in PGC. The PGC sub-picture palette (PGC_SP_PLT) describes a set of a predetermined number of color palettes used in all sub-picture streams of this PGC.

Further, PGC general information (PGC_GI) 1
05 includes a cell reproduction information table (C_PBIT) 10
7 is described, and the start address (C_POSIT_SA) of the cell position information table (C_POSIT) 108 is described.
Which start address (C_PBIT_SA and C_PBIT_SA
_POSIT_SA) is also VTS_PGC information (VTS_
PGCI) is described by the number of logical blocks relative to the first byte.

As for the category (PGC_CAT) of the program chain (PGC), in the case of a menu program chain (PGC), as shown in FIG. 29, a bit number b31 describes whether the entry type is a PGC entry or a non-PGC entry. Bit numbers b30 to b28 are reserved for future use, and a menu ID indicating a menu type is described in bit numbers b27 to b24.
23 to bit number b22 describe the PGC block mode, bit number b21 to bit number b20 describe the PGC block type, bit number b19 to bit number b16 describe the program playback control, and bit number b15 To bit number b
14 describes a copy flag, bit numbers b13 to b12 describe playback system management, and bit numbers b11 to b8.
Describes the application type, and bit number b
Bits b0 through 7 are reserved for future use.

As the menu ID, “0010” indicates a title menu used in the video manager information menu (VMGM), “0011” indicates a lot menu, and “0100” indicates a video title set menu (VTSM). ) Indicates a sub-picture menu, "0101" indicates an audio menu used in a video title set menu (VTSM), "0110" indicates an angle menu used in a video title set menu (VTSM), and "0
111 ", the video title set menu (VT
3 shows a program menu used in SM).

When the category (PGC_CAT) of the program chain (PGC) is the title program chain (PGC), the video title set (VTS) 72 is changed from bit number b30 to bit number b24.
The number of titles (VTS_TTN) from 1 to 99 is described.

The contents of the program chain (PGC) (P
GC_CNT) has a bit number b2 as shown in FIG.
3 is reserved and the number of programs 1 to 99 in this program chain (PGC) is described in bit numbers b22 to b16.
15 to bit number b8 describe the number of cells of 1 to 255 in this program chain (PGC). Bit numbers b7 to b4 are reserved for future use, and bit numbers b3 to b0 are reserved. ,
The number of angles of 1 to 9 in this program chain (PGC) is described.

Program chain Program map (P
GC_PGMAP) 106, as shown in FIG.
4 is a map showing a configuration of a program in C. This map (PGC_PGMAP) 106 includes FIGS.
As shown in FIG. 2, an entry cell number (ECELLN), which is a start cell number of a program, is described in ascending order of cell numbers. Also, program numbers are assigned from 1 in the order of description of entry cell numbers. Therefore, the first entry cell number of this map (PGC_PGMAP) 106 must be # 1.

Cell playback information table (C_PBIT) 1
07 defines the PGC cell playback order. In the cell reproduction information table (C_PBIT) 107, cell reproduction information (C_PBIT) is continuously described as shown in FIG. Basically, the cells are reproduced in the order of their cell numbers. Cell playback information (C_PB
IT) describes a cell category (C_CAT) as shown in FIG. This cell category (C
_CAT) includes a cell block mode indicating whether a cell is a cell in a cell block, or if the cell is a cell in a cell block, the first cell, the cell is not a part of the block, or A cell block type indicating whether the block is an angle block, a system time clock (ST
An STC discontinuity flag indicating whether the resetting of C) is necessary is described. Here, a cell block is defined as a set of cells at a specific angle. The angle can be changed by changing the cell block. That is,
Taking baseball as an example, a change from an angle block that captures a scene from the infield to an angle block that captures a scene from the infield corresponds to a change in angle.

The cell category (C_CAT)
Indicates a cell playback mode indicating whether playback is to be performed continuously in a cell or to be stopped in units of video object units (VOBUs) in the cell, whether or not to stop after playback of the cell, or a still time. Cell navigation control is described.

As shown in FIG. 34, the cell reproduction information table (C_PBIT) 107 includes a cell reproduction time (C_PBTM) that describes the total reproduction time of the PGC. If the angle cell block is in the PGC,
The playback time of the angle cell number 1 indicates the playback time of the angle block. Further, the cell playback information table (C_PBIT) 107 contains the head video object unit (VOBU) in the cell by the relative number of logical sectors from the head logical sector of the video object unit (VOBU) 85 in which the cell is recorded. 85 start addresses (C_FVOBU_SA) are described,
The start address (C_LVO) of the last video object unit (VOBU) 85 in the cell is determined by the relative number of logical sectors from the first logical sector of the video object unit (VOBU) 85 in which the cell is recorded.
BU_SA) is described.

Cell position information table (C_POSI) 1
08 specifies the identification number (VOB_ID) of the video object (VOB) of the cell and the identification number (C_ID) of the cell used in the PGC. In the cell position information table (C_POSI), as shown in FIG. 35, the cell position information (C_POSI) corresponding to the cell number described in the cell reproduction information table (C_PBIT) 107 is the same as the cell reproduction information table (C_PBIT). Described in order. The cell position information (C_POSI) includes FIG.
As shown in FIG. 6, the video object unit (V
The identification number (C_VOB_IDN) and cell identification number (C_IDN) of the OBU 85 are described.

A video title set menu (VTSM) shown in FIG. 20 describes information for each language in a video title set menu PGCI unit table (VTS).
M_PGCI_UT) 111 includes video title set menu PGCI unit table information (VTSM_PGCI_UTI) 111A, n video title set menu language unit search pointers (VTSM_LU_SRP) 111B, and n video title set menu language units (VTSM_L) as shown in FIG.
U) 111C, and are described in that order.

Video title set menu PGCI unit table information (VTSM_PGCI_UTI) 1
11A describes the information of this table 111, and the video title set menu PGCI unit search pointer (VTSM_LU_SRP) 111B contains # 1
The video title set menu language unit (VTSM_LU) described in the order corresponding to the video title set menus from # 1 to #n, the language code is described, and described in the order corresponding to the video title set menus from # 1 to #n. ) Describes a pointer for searching for 111C. Video title set menu language unit (VTSM_LU)
Each of 111C describes the category and start address of the program chain of the corresponding video title set menu.

More specifically, the video title set menu PGCI unit table information (VTSM_PGC)
As shown in FIG. 38, the video title set menu language unit (VTSM_L) is provided in the I_UTI) 111A.
U) The number of 111C is a parameter (VTSM_LU_N).
s), and the end address of the video title set menu language unit (VTSM_LU) 111C is a parameter (VTSM_PGCI_UT_E).
A). As shown in FIG. 39, the video title set menu PGCI unit search pointer (VTSM_LU_SRP) 111B describes the video title set menu language code as a parameter (VTSM_LCD), and the video title set menu language unit (VTSM_L).
U) The start address of 111C is the parameter (VTSM_
LU_SA). Further, a video title set menu language unit (VTSM_LU) 1
11C, the video title set menu language unit information (VTSM_LUI) 1 as shown in FIG.
11D, video title set menu PGC information search point (VTSM_PGCI_SRP) 111E,
Video title set menu PGC information (VTSM_
PGCI) 111F, and are described in that order. This table 1 is included in the video title set menu language unit information (VTSM_LUI) 111D.
11C is described, and (VTSM_PGCI_SR
P) 111E describes in the order corresponding to the video title set menu from # 1 to #n, describes the category of the program chain of the video title set menu, and also describes the category of the video title set menu from # 1 to #n. The video title set menu PGC information search information (V
The description about the pointer for searching the (TSM_PGCI) 111F is described.

[0101] The video title set menu PGC information search information (VTSM_PGCI) 111F is information on the program chain of the video title set menu, that is, VTSM program chain information (VTSM_PGCI).
M_PGCI).

More specifically, as shown in FIG. 41, the number of VTSM program chain information (VTSM_PGCI) 111F is described as a parameter (VTSM_PGCI_Ns) in the video title set menu language unit information (VTSM_LUI) 111D.
Video title set menu language unit information (VT
The end address of the SM_LUI 111D is described as a parameter (VTSM_LUI_EA). As shown in FIG. 42, the video title set menu PGC information search point (VTSM_PGCI_S
In the RP) 111E, the category of the program chain of the video title set menu is a parameter (VTS).
M_PGC_CAT), and VTSM program chain information (VTSM_PGCI) 111F.
Is the parameter (VTSM_PGCI_S)
A).

Category of program chain in video title set menu (VTSM_PGC_CAT)
Describes a flag indicating whether or not this PGC has been entered, and a menu ID indicating whether the menu is a menu. When “0100” is described as the menu ID, it means a sub-picture menu and “010”
If "1" is described, it means an audio menu,
When "0110" is described, it means an angle menu, and when "0111" is described, it means a program menu.

As described with reference to FIG.
Is a set of video object units (VOBU) 85, and video object units (VOBU) 8
5 is defined as a pack sequence starting from the navigation (NV) pack 86. Therefore, the start address (C_FVOBU_SA) of the first video object unit (VOBU) 85 in the cell 84 is the NV pack 8
6 represents the start address. As shown in FIG. 43, the NV pack 86 includes a pack header 110, a system header 111, and two packets as navigation data, that is, a reproduction control information (PCI) packet 116 and a data search information (DSI) packet 11.
The number of bytes as shown in FIG. 43 is assigned to each part, and one pack is defined as 2048 bytes corresponding to one logical sector. The NV pack is arranged immediately before the video pack including the first data in the group of picture (GOP). Even when the object unit 85 does not include the video pack, the NV pack is arranged at the head of the object unit including the audio pack and / or the sub-picture pack. As described above, even when the object unit does not include the video pack, the reproduction time of the object unit is determined based on the unit in which the video is reproduced, as in the case where the object unit includes the video pack.

Here, the GOP is defined by the MPEG standard, and is defined as a data string constituting a plurality of screens as described above. That is, a GOP corresponds to compressed data, and when this compressed data is expanded, image data of a plurality of frames from which a moving image can be reproduced is reproduced. Pack header 110 and system header 111
Is defined by the MPEG2 system layer, a pack header 110 stores information of a pack start code, a system clock reference (SCR), and a multiplexing rate, and a system header 111 describes a bit rate and a stream ID. ing. Packet headers 112 and 11 of PCI packet 116 and DSI packet 117
4, a packet start code, a packet length, and a stream ID are stored as defined in the MPEG2 system layer.

Other video, audio and sub-picture packs 8
8, 89, 80, and 91 correspond to MPEG as shown in FIG.
Similarly, it is composed of a pack header 120, a packet header 121, and a packet 122 in which corresponding data is stored, as determined by the second system layer, and the pack length is determined to be 2048 bytes. Each of these packs is aligned with a logical block boundary.

The PCI data (P
CI) 113 is presentation data, that is, navigation data for changing display contents in synchronization with the playback state of video data in the VOB unit (VOBU) 85. That is, as shown in FIG. 45, the PCI data (PCI) 113 includes angle information (NSL) as each jump destination angle information at the time of changing the PCI general information (PCI_GI) angle as information of the entire PCI.
S_AGLI) and highlight information (HLI) are described. FIG. 4 shows the PCI general information (PCI_GI).
6 shows the VO in which the PCI 113 is recorded.
The NV pack (NV_P) in which the PCI 113 is recorded in the number of logical blocks relative to the logical sector of the BU 85
CK) 86 (NV_PCK_LBN) is described. The PCI general information (PCI_GI) includes a category (VOBU_CAT) of VOBU85,
Start PTM of VOBU85 (VOBU_SPTM)
And an end PTM (VOBU_EPTM). Here, the start PTM of VOBU85 (VOBU
_SPTM) is the VOBU containing the PCI 113
85 shows the reproduction start time (start presentation time stamp (SPTM)) of the video data. This playback start time is the first playback start time in the VOBU 85. Usually the first picture is MPE
I-picture (Intra-Pict) in the G standard
ure). The end PTM (VOBU_EPTM) of the VOBU 85 is the PCI 113
Indicates the playback end time (end presentation time stamp (EPTM)) of the VOBU 85 including.

The angle information (NSML_AGLI) includes, as shown in FIG. 47, the start addresses (NSML_AGL_C_DS) of the angle cells at the jump destination by the number of angles.
TA) is described, and its start address is PCI 113
Is described as a logical sector relative to the logical sector of the NV pack 86 in which is recorded. This angle information (NS
In the case of an angle change based on (ML_AGLI),
As shown in FIG. 48, the start address of the VOBU 85 in another angle block equal to the playback time of the VOBU 85 in which the PCI 113 is recorded, or the VOBU 85 in another angle block having the closest playback time before the playback time. Start address (NSML_
AGL_C_DSTA) is the angle information (NSML)
_AGLI).

According to the description of the start address of the angle cell (NSML_AGL_C_DSTA),
Specifically, the following angle change is realized.
Here, the change of the angle will be described on the assumption that a series of times from a pitcher throwing to a batter hitting in a baseball game until the hit ball becomes a home run is continuous.
Here, the angle cell (ANG_C # j) controlled by the PCI 113 can be changed in units of a video object unit (VOBU) 85 as shown in FIG. In FIG. 48, a video object unit (VOBU) 85 is assigned a number in accordance with the playback order according to the playback order.
The video object unit (VOBU # n) 85 corresponding to the reproduction number n of #j) includes another angle cell (AN).
G_C # 1) 84 or an angle cell (ANG_C #)
9) A video object unit (VOBU # n) 85 having a playback number n corresponding to 84 stores video data relating to the closest different scene at the same time or before. An angle cell (ANG_C # j) 8
4 shows a whole view including a pitcher and a batter on the screen, VOBUs 85 are continuously arranged as video data showing a series of operations, and an angle cell (ANG_C # 1) 84 shows a batter hit. VOBUs 85 are continuously arranged as video data in which only the batter is displayed on the screen in order to appreciate the form. In addition, in the angle cell (ANG_C # 9), only the expression of the pitcher is displayed as video data in which only the expression of the pitcher is displayed on the screen.
Assume that the OBUs 85 are arranged continuously. First, when the user views the angle cell #j (AGL_C # j) and changes the angle cell #j to the angle cell # 1 at the moment when the user hits it,
In other words, if the angle is changed to the angle where only the batter is projected at the moment of hitting, the screen will not be changed to the screen of only the batter after hitting, but will be changed to the screen after the batter before starting the hitting starts to swing the bat Becomes When the angle cell #j (AGL_C # i) is first viewed and the angle cell is changed to the angle cell # 9 at the moment of striking, that is, the angle is changed to the angle at which only the pitcher is projected at the moment of striking. The expression of the pitcher hit at the moment is displayed on the screen, and the psychological change of the pitcher can be appreciated.

The highlight information (HLI) is information for applying highlight to one rectangular area in the display area of the sub-picture. The highlight information describes the color of the sub-picture in a specific rectangular area within the display area of the sub-picture and the mixing ratio (contrast) with the video. As shown in FIG. 49, the highlight information is valid for all sub-video streams reproduced within the valid period. For example, when a video, a sub-picture, and highlight information are combined, a composite screen as shown in FIG. 50 is displayed on the monitor unit 6.

The highlight information is, as shown in FIG.
A highlight general information (HL_GI) 113A, a button color information table (BTN_COLIT) 113B, and a button information table (BTNIT) 113C are described. As shown in FIG. 52, the button color information table (B
TN_COLIT) 113B includes button color information (BT
N_COLI) 113D, 113E, 113F are described, and the button information table (BTNIT) 113C includes
A maximum of 36 pieces of button information (BTNI) 113I,... Are described.

For example, as shown in FIG. 52, 36 pieces of button information (BTNI) 113I,...
A group mode, a two group mode composed of 18 pieces of button information, and a three group mode composed of 12 pieces of button information are described.

Highlight general information (HL_GI) 113
A is information of the entire highlight information. As shown in FIG. 53, the highlight general information (HL_GI) 113A includes the state of highlight information (HLI_SS), highlight start time (HLI_S_PTM), highlight end time (HLI_E_PTM), and button selection end time (BTN_SL_E_PTM). , Button mode (BT
N_MD), button start number (BTN_SN), number of valid buttons (BTN_Ns), number of buttons that can be selected by number (NSBTN_Ns), forced selection button number (FSL)
BTN_N), forced confirmation button number (FACBTN_
N) is described.

The state of the highlight information (HLI_SS) describes the state of the highlight information in the corresponding PCI. For example, in the case of "00", it is described that no valid highlight information exists, and in the case of "01", the previous V
It is described that highlight information different from the highlight information of the OBU exists. In the case of "10", it is described that the same highlight information as the highlight information of the previous VOBU exists, and in the case of "11". , It is described that the highlight information of the previous VOBU differs from the highlight information of only the button command.

Start PTM (HLI) of highlight information
_S_PTM) describes a highlight start time (start presentation time (SPTM)) at which the corresponding highlight information becomes valid. The highlight start time is equal to or longer than the display start time of the sub-video stream targeted by the highlight information. When the HLI_SS is described as “01”, the highlight start time of the highlight information is set during the VOBU corresponding to the PCI.
It has been updated. HLI_SS is "10"
Alternatively, when “11” is described, the highlight start time of the highlight information is the VOB corresponding to the PCI.
During U, it is used without interruption.

The highlight end time (HLI_E_PT)
M) describes a highlight end time at which the highlight information becomes invalid. The highlight end time is equal to or shorter than the display end time of the sub-video stream targeted by the highlight information. When HLI_SS is described as "01", the highlight end time of the highlight information is updated during the VOBU corresponding to the PCI. HLI_SS is “10” or “1”
When "1" is described, the highlight end time of the highlight information is used without interruption during the VOBU corresponding to the PCI. The highlight end time while the HLI is in the stationary state. (FFFFFFFFh) is described as (HLI_E_PTM).

Button selection end time (BTN_SL_E_
PTM) describes the end time of button selection. The button selection end time is equal to or shorter than the display end time of the sub-video stream targeted by the highlight information.
When HLI_SS is described as “01”, the button selection end time of the highlight information is updated during the VOBU corresponding to the PCI. HLI_
When the SS is described as “10” or “11”, the button selection end time of the highlight information is determined by the PCI
Are used without interruption during the corresponding VOBU. While the HLI is in the stationary state, the button selection end time (BTN_SL_E_PTM) is set to (FFFFFF
FFh) is described.

The button mode (BTN_MD) describes the button grouping and the display type of the sub-picture corresponding to each group. For example, the number of button groups (BTNGR_Ns), the display type of the sub-picture corresponding to button group 1 (BTNGR1_DSPTY), and the display type of the sub-picture corresponding to button group 2 (BTNG)
R2_DSPTY) and the display type (BTNGR3_DSPTY) of the sub-picture corresponding to the button group 3 are described. The number of button groups (BTNGR_Ns) is
In the case of “01”, there are one group, in the case of “10”, two groups, and in the case of “11”, there are three groups. When the display type is “01”, the display type is wide (9/1
6) In the case of "10", letter box, and in the case of "11", pan-scan.

In the button start number (BTN_SN), the offset number of the first button in the button group is described. The offset number can be described in the range of 1 to 255. Button start number (BTN_
SN) is commonly applied to each button group.

The number of valid buttons (BTN_Ns) describes the number of valid buttons in the button group. If the button group is 1, the number of buttons is from 1 to 36,
When the button group is 2, the description can be made in the range from 1 to 18, and when the button group is 3, the description can be made in the range from 1 to 12. The number of valid buttons (BTN_Ns) is commonly applied to each button group.

The number of buttons that can be selected by number (NSBTN_
In Ns), the number of buttons that can be selected by a button number in the button group is described. If the number of buttons is 1, the number of buttons is from 1 to 36, and the number of buttons is 2.
In the case of 1 to 18 and the button group is 3,
It can be described in the range of 1 to 12. The number of buttons that can be selected by number (NSBTN_Ns) is commonly applied to each button group.

Forced selection button number (FSLBTN_N)
Describes a button number that is forcibly selected in the highlight start time (HLI_S_PTM). Thus, even if the presentation starts during the highlight valid period, the button number set in the highlight information is selected. When the button group is 1, the button number is in the range from 1 to 36 and 63. When the button group is 2, the button number is in the range from 1 to 18 and 63.
If the button group is 3, range from 1 to 12 and 6
3 can be described. Forced selection button number (FSLBT
N_N) is commonly applied to each button group.

Forced confirmation button number (FACBTN_N)
Contains the button selection end time (BTN_SL_E_PT
In M), a button number for forcibly confirming the state is described. When the button group is 1, the button number ranges from 1 to 36 and 63, and when the button group is 2,
When the button group is 3 and the range is 1 to 18 and the button group is 3, the description can be made in the range and 1 to 12 and 63. The forced confirmation button number (FACBTN_N) is commonly applied to each button group.

Button color information table (BTN_COLI)
T) 113B includes three button color information (BTN_COLI) 113D, 113E, 113 as shown in FIG.
F is described. Button color information (BTN_COLI) 1
13D,... In the order of description, button color numbers (BTN_COL)
N) is assigned from 1. Button color information (BTN_
As shown in FIG. 54, selected color information (SL_COLI) 113G and fixed color information (AC_COLI) 113H are described in each of the CCOLs 113D,. The selection color information (SL_COLI) 113G describes the color and contrast to be changed when the button is in the selected state. The confirmed color information (AC_COLI) 113H describes the color and contrast to be changed when the button is in the confirmed state. The selected state of the button is a state in which the selected color is displayed. In this state, the user can change the highlighted button to another button. The confirmed state of the button is a state in which the confirmed color is displayed and the button command is executed. In this state, the user is prohibited from changing the highlighted button to another button.

As shown in FIG. 55, the selected color information (SL_COLI) 113G contains the selected color code of the emphasized pixel 2,
The selection color code of the enhancement pixel 1, the selection color code of the pattern pixel, the selection color code of the background pixel, the selection contrast of the enhancement pixel 2, the selection contrast of the enhancement pixel 1, the selection contrast of the pattern pixel, and the selection contrast of the background pixel are described. ing.

As shown in FIG. 56, the final color information (AC_COLI) 113H contains the final color code of the emphasized pixel 2,
The fixed color code of the emphasized pixel 1, the fixed color code of the pattern pixel, the fixed color code of the background pixel, the fixed contrast of the emphasized pixel 2, the fixed contrast of the emphasized pixel 1, the fixed contrast of the pattern pixel, and the fixed contrast of the background pixel are described. ing.

Button information table (BTNIT) 113
As shown in FIG. 57, 36 pieces of button information (B
TNI) 113I,... Are described. In accordance with the description contents of the number of button groups (BTNGR_Ns), one group mode in which all 36 pieces of button information (BTNI) 113I,... Become valid in the order of description in the button information table (BTNIT), and button information (BTNI) 113I in units of 18 ,
Can be used as three modes, that is, a two-group mode grouped by..., A three-group mode grouped by twelve button information (BTNI) 113I,. Since the description area of the button information (BTNI) 113I in each group mode is fixed, zero is described in all areas where no valid button information (BTNI) 113I exists. Button numbers (BTNI) in the order of description of the button information (BTNI) 113I in each button group
NN) is assigned from 1.

In the button group, the buttons for which the user number can be specified are from BTN_ # 1 to the number of the value described in NSBTN_Ns.

As shown in FIG. 57, button information (BTNI) 113I contains button position information (BTN_POS).
I) 113J, adjacent button position information (AJBTN_P
I) 113K and button command (BTN_CMD) 1
13L is described.

Button position information (BTN_POSI) 11
In 3J, as shown in FIG. 58, the color numbers (1 to 3) used by the buttons and the display rectangular area on the video display screen are described. Button position information (BTN_POSI) 11
3J includes a button color number (BTN_COL) of the button.
N), the start X coordinate of the rectangular area where the button is displayed (St
art X-coordinate, End X-coordinate of the rectangular area in which the button is displayed (End X-coordinate)
nate), the start Y coordinate of the rectangular area where the button is displayed (Start Y-coordinate), and the end Y coordinate of the rectangular area where the button is displayed (End Y-coo d).
rdinate) and auto operation mode (Auto)
action mode) is described. The auto operation mode describes whether the selected state is not maintained, or the selected state or the fixed state is maintained.

The adjacent button position information (AJBYN_POS)
I) 113K describes the button numbers located in four directions, up, down, left, and right, and whether the target button has a selected state. The button having no selection state is a button that immediately transitions to the final state without moving to the selected state when the target button is moved. For example, an upper button number, a lower button number, a left button number, and a right button number are described. It corresponds to the instruction of the select key 5m.

Button Command (BTN_CMD) 113
L describes a command to be executed when the button is determined. According to this command, for example, a program for shifting to another selection screen or a program chain for reproducing a title is designated.

The D of the DSI packet 117 shown in FIG.
The SI data (DSI) 115 is a VOB unit (VO
BU) 85 is navigation data for executing the search. The DSI data (DSI) 115 includes FIG.
As shown in FIG. 5, DSI general information (DSI_GI), angle information (SML_AGLI), VOB unit search information (VOBU_SRI), and synchronous reproduction information (SYNC)
I) is described.

The DSI general information (DSI_GI) describes information on the entire DSI 115. That is, FIG.
0, the DSI general information (DSI_GI) includes
NV pack 86 system time reference value (NV_PC
K_SCR). The system time reference value (NV_PCK_SCR) is stored in a system time clock (STC) incorporated in each unit shown in FIG. 1, and the video, audio, and sub-picture packs are used for video, audio, and sub-picture based on the STC. The video and audio are decoded by the decoders 58, 60, and 62, and are reproduced by the monitor 6 and the speaker 8. In the DSI general information (DSI_GI), the start of the NV pack (NV_PCK) 86 in which the DSI 115 is recorded with the relative logical sector number (RLSN) from the first logical sector of the VOB set (VOBS) 82 in which the DSI 115 is recorded. Address (NV_PCK_LBN) is described, and VO
The address (VOBU_EA) of the last pack in the VOB unit (VOBU) 85 in which the DSI 115 is recorded is described by the relative logical sector number (RLSN) from the head logical sector of the B unit (VOBU).

Further, in the DSI general information (DSI_GI), the VOB unit (V
The V pack (V_PC) in which the last address of the first I picture in this VOBU is recorded in the number of logical sectors (RLSN) from the first logical sector of the OBU)
K) VOBU 8 in which the end address (VOBU_IP_EA) of 88 is described and the DSI 115 is recorded
3 (VOBU_IP_IDN) and the corresponding DS
The identification number of the cell in which I115 is recorded (VOBU_
C_IDN).

The angle information (SML_AGLI) includes
As in the case of the angle information (NSML_AGLI) of the PCI 113, as shown in FIG.
TA) is described, and its start address is the DSI1
15 is described as a logical sector relative to the logical sector of the NV pack 86 in which it is recorded. In the case of changing the angle based on the angle information (SML_AGLI), as shown in FIG. 62, the start address of the cell 84 in another angle block after the reproduction time of the VOBU 85 in which the DSI 115 is recorded is set to the angle information. (SML_AGLI).

DSI angle information (SML_AGL)
When I) is used, the angle can be changed on a cell-by-cell basis while the PCI can be changed in a video object unit (VOBU), and the scene is changed continuously in time. That is, the PSI angle information (SML_AGL)
While I) describes a change in angle that is discontinuous in time, the angle information (SML_AGLI) of the DSI describes a change in angle that is continuous in time. If a specific example of the angle is described using the example of baseball described above, the following angle change is realized. An angle cell #j (AGL_C # j) 84 is a stream of image data in which a series of scenes in which a pitcher throws the ball and a batter hits the ball and the hit ball becomes a home run is shot from the infield side, and the angle cell # 1 Is an image data stream of a similar scene shot from the outfield side. Angle cell # 9 is an image data stream that captures the situation of the team to which the batter belongs for the same scene. When angle cell #j (AGL_C # j) is viewed and changed to angle cell # 1 at the moment of striking, that is, changed to a scene from the outfield side at the moment of striking, temporally continuous after the batter hits You can change to a screen where the ball hits the outfield. In addition, if the angle cell #j (AGL_C # i) is first watched and changed to an angle cell # 9 at the moment when a home run is performed, that is, if the angle is changed to an angle in which the state of the team to which the batter belongs is projected, the home run is performed. The state of the uproaring team and the expression of the manager are displayed on the screen. As described above, the angle information (NSML_AGL) of the PCI 113 is
I) and the angle information (SML_AGL) of the DSI 115
If I) is used, a clearly different scene will be reproduced.

Search information of VOBU 85 (VOBU_S
In I), information for specifying the start address in the cell is described as shown in FIG. That is, the search information (VOBU_SI) of the VOBU 85 includes the VOB unit (VOBU) including the DSI 115 as shown in FIG.
85 as a forward address [data] (FWDAn) according to the reproduction order, from +1 to +20, +
VOB units up to 60, +120 and +240 (V
The start address (A_FWDn) [presence / absence and if any] of the OBU) 85 is described by the number of logical sectors relative to the head logical sector of the VOB unit.

This forward address (FWDAn)
Is represented by 32 bits as shown in FIG. 64, and the bit number 29 (b29) to the bit number 0 (b0) have its address, for example, the forward address 10 (FWD).
A10) is described, and a flag (V_FWD_Exist1) indicating whether video data exists in the video object unit (VOBU) 85 corresponding to the forward address (FWDAn) is provided at the head of the forward address (FWDAn). ) And a flag (V_FWD_Exist2) indicating whether there is video data between the video object and the forward destination video object unit. That is, V_FWD_Exist1 is the bit number (b
31), and when this flag is 0, there is no video data in the video object unit (VOBU) 85 specified by the forward address (FWDAn) described in bit number 29 to bit number 0. If this flag is 1, the video object unit (VOBU) 85 specified by the forward address (FWDAn) described in the bit numbers 29 to 0 has video data. Means For example, the forward address 10 (FW
If there is video data in DA10), bit 31
A flag of 1 is set in the number V_FWD_Exist1, and if there is no video data at that address, 0 is described in bit 31 of the V_FWD_Exist1. If V_FWD_Exist2 corresponds to the bit number (b30) and this flag is 0,
Between the video object unit (VOBU) 85 specified by the forward address (FWDAn) described in the bit numbers 29 to 0 and the video object unit (VOBU) 85 including the DSI 115 describing this forward address Means that there is no video data in any of the video object units (VOBUs) 85 of this example. If this flag is 1, the video object unit (VOBU)
85 indicates that the video data is any video object unit in between. For example, a forward 1 between a video object unit having a forward address 10 (FWDA10) and a video object unit 85 including a DSI 115 in which a forward address 10 corresponding to the forward address 0 is described.
If there is video data in a plurality of video object units corresponding to the forward 9 to, the flag of bit 30 V_FWD_Exist2 is set to 1 and
If there is no video data at that address, 0 is described in bit 30 of V_FWD_Exist2.

Similarly, the search information (VOBU_SI) of VOBU 85 contains the DS as shown in FIG.
With respect to the VOB unit (VOBU) 85 including the I115, the backward data (BW
DA) as -1 to -20, -60, -120 and-
The start address (A_BWDn) of the VOB unit (VOBU) 85 up to 240 is
OBU) 85 is described by the number of logical sectors relative to the first logical sector.

The backward address (BWDAN)
n) is represented by 32 bits as shown in FIG. 65, and the bit number 29 (b29) to the bit number 0 (b0) have its address, for example, the backward address 10
The address of (BWDA10) is described, and the head of the backward address (BWDANn) indicates whether video data exists in the video object unit (VOBU) 85 corresponding to the backward address (BWDANn). Flag (V_BWD_Ex
ist1) and a flag (V_BWD_Exist2) indicating whether there is video data between the video object and the backward video object unit. That is, V_BWD_Exist1 corresponds to the bit number (b31), and when this flag is 0, the video object unit (VOBU) specified by the backward address (BWDANn) described from bit number 29 to bit number 0 85 indicates that there is no video data, and if this flag is 1, the video object unit (VOBU) specified by the backward address (BWDANn) described in bit numbers 29 to 0 85 means that there is video data. For example, when video data is present in the backward address 10 (BWDA10), a flag of 1 is set in V_BWD_Exist1 of bit 31, and when video data is present in that address, V_BWD_Exist of bit 31 is present.
In 1 is described 0. Also, V_BWD_Exis
t2 corresponds to the bit number (b30), and this flag is set to 0
, The video object unit (VOBU) 85 specified by the backward address (BWDANn) described in the bit numbers 29 to 0 and the DSI 115 describing this backward address
Means that there is no video data in any of the video object units between the video object units and the video object unit (VOBU) 85 when the flag is 1. It means that there is. For example, the video object unit 8 between the video object unit of the backward address 10 (BWDA10) and the backward address 10 corresponding to the backward address 0
If there is video data in any one of bits 5, bit 3
A flag of 1 is set in the 0th V_BWD_Exist2, and when there is no video data at that address, 0 is described in the 30th bit of the V_BWD_Exist2.

The synchronization information (SYNCI) includes the DSI 11
The address information of the sub-picture and audio data to be reproduced in synchronization with the reproduction start time of the video data of the VOB unit (VOBU) including the address 5 is described. That is, FIG.
, The relative number of logical sectors (R) from the NV pack (NV_PCK) 86 on which the DSI 115 is recorded.
Audio pack (A_PCK) targeted by LSN)
A start address (A_SYNCA) 91 is described. When there are a plurality of (up to 8) audio streams, synchronization information (SYNCI) is described for the number.
Also, in the synchronization information (SYNCI), the NV pack (NV_PCK) in which the DSI 115 records the address (SP_SYNCA) of the NV pack (NV_PCK) 86 of the VOB unit (VOBU) 85 including the target audio pack (SP_PCK) 91 ) 86 relative logical sector number (RLSN). When there are a plurality of sub-video streams (up to 32), the synchronization information (SYNCI) is described by the number.

A sub-picture unit constituted by sub-picture data of a plurality of sub-picture packets will be described with reference to FIG. A sub-picture unit as data (for example, subtitles) of more than ten screens of still images can be recorded in one GOP. The sub-picture unit includes a sub-picture unit header (SPUH), pixel data (PXD) composed of run-length data, and a display control sequence table (DC).
SQT).

In the sub-picture unit header (SPUH),
As shown in FIG. 68, the size of the sub-picture unit (SPD
SZ) and the start address (SPDCSQTA) of the display control sequence table.

Display control sequence table (DCSQ
T) describes a display control sequence (DCSQ) in the order of elapsed time, as shown in FIG.

In each display control sequence (DCSQ),
As shown in FIG. 70, the start address of the next display control sequence (SPNDSQA) and one or more display control commands (SPDCCMD) are described.

The display control command (SPDCCMD) is
Set the compulsory display start timing of pixel data
C (FSTA DSP), pixel data display starter
Set Imming Command (STA DSP), pixel data
Data display end timing setting command (STP D
SP), a command for setting the color code of the pixel data (S
ET COLOR), contra of pixel data and main video
Set the strike ratio command (SET CONTR), pixel data
Data display area setting command (SET DARE
A), set the display start address of pixel data
Do (SET DSPXA), color change of pixel data and
Set contrast change command (CHG COLCO
N), a display control command end command (CMD EN
D).

Command (STA DSP) is a command for designating the start of display of sub-picture data, and is described as an offset PTM from a PTM described in a sub-picture packet including a sub-picture unit header (start PT
M). Command (STP DSP) is an instruction for designating the stop of the display of the sub-picture data, and is described as an offset PTM from the PTM described in the sub-picture packet including the sub-picture unit header (stop PTM).

The start PTM and the stop PTM are:
It is set to be delayed by an arbitrary predetermined time from the PTM of the main video data and audio data reproduced in the simultaneous time zone.

The system processor unit 54 shown in FIG.
Has a packet transfer processing unit 200 that determines the type of a packet and transfers the data in the packet to each decoder. This packet transfer processing unit 200
As shown in the figure, the memory interface unit (memory I /
F section) 191, stuffing length detecting section 192, pack header end address calculating section 193, pack type determining section 1
94, a packet data transfer control section 195, and a decoder interface section (decoder I / F section) 196.

The memory I / F unit 191 transfers the pack data from the data RAM unit 56 to the stuffing length detection unit 192, the pack type discrimination unit 194, the packet data transfer control unit 195, and the decoder I / F unit 1 using the data bus.
96.

The stuffing length detecting section 192 detects how many bytes the stuffing length in the pack header 120 in the pack data supplied from the memory I / F section 191 has. This is output to end address calculation section 193.

Pack header end address calculating section 193
Calculates the pack header end address based on the stuffing length supplied from the stuffing length detector 192, and calculates the pack header end address.
4 and the packet data transfer control unit 195.

According to the pack header end address supplied from the pack header end address calculation section 193, the pack type determination section 194 is supplied next to the address in the pack data supplied from the memory I / F section 191. Depending on the contents of the 4-byte data, video pack 8
8, the audio pack 91, the sub-picture pack 90, and the NV pack 86, and the result of this determination is output to the packet data transfer control unit 195.

The packet data transfer control unit 195 determines the transfer destination and the packet start address according to the pack header end address supplied from the pack header end address calculation unit 193 and the pack type determination result supplied from the pack type determination unit 194. The address is determined, and the packet length in the packet header 121 of the supplied pack data is further determined. Further, the packet data transfer control unit 1
95 supplies a signal indicating a transfer destination as a transfer control signal to the decoder I / F unit 196, and supplies a packet end address from a packet start address to the memory I / F unit 191.

The decoder I / F unit 196 controls the packet header supplied from the memory I / F unit 191 to the packet data transfer control unit 195 according to the transfer control signal supplied from the packet data transfer control unit 195. Video data, audio data, and sub-picture data as packet data including 121 are output to the corresponding decoder units 58, 60, and 62, and navigation data and computer data as packet data are output to the data RAM unit 56. Things.

Next, the processing of the packet transfer processing section 200 will be described.

That is, the pack data read from the data RAM unit 56 is transferred to the stuffing length detecting unit 192, the pack type determining unit 194 via the memory I / F unit 191,
A packet data transfer control unit 195 and a decoder I /
It is supplied to the F section 196.

Thus, the stuffing length detecting section 19
2, the stuffing length is detected, and data indicating the stuffing length is output to the pack header end address calculation unit 193.

The pack header end address calculating section 193 calculates the pack header end address based on the supplied stuffing length, and this pack header end address is used as the pack type determining section 194 and the packet data transfer control section 19.
5 is supplied.

According to the supplied pack header end address, the pack type discriminating section 194 determines the contents of the data of 4 to 6 bytes supplied next to the address, the NV pack 86, the video pack 88, and the audio pack of the Dolby AC3. 91, Linear PCM audio pack 9
1. It is determined which of the sub-picture packs 90, and the result of this determination is supplied to the packet data transfer control unit 195.

That is, when a 1-byte stream ID indicating the private stream 2 is supplied, it is determined to be the NV pack 86, the 1-byte stream ID indicating the video stream is determined to be the video pack 88, and the private stream 1 is indicated. 1-byte stream ID
Is determined to be one of the Dolby AC3 audio pack 91, the linear PCM audio pack 91, and the sub-picture pack 90.

When the stream ID is the private stream 1, the sub-stream ID following the packet header 121 indicates the audio pack of the linear PCM,
The Dolby AC3 audio pack or sub-video stream is determined, and its stream number is determined.

Then, the packet data transfer control section 195
Determines the transfer destination and the packet start address according to the supplied pack type determination result and the pack header end address, and further determines the packet length in the packet header 121 of the supplied pack data. This allows
The packet data transfer control unit 195 outputs a signal indicating a transfer destination as a transfer control signal to the decoder I / F unit 19.
6 and the packet end address from the packet start address is supplied to the memory I / F unit 191.

Therefore, substantially effective packet data is transferred from the memory I / F unit 191 via the data bus.
The data is supplied to the decoder I / F unit 196, and thereafter, each of the decoder units 58, 60, and 62 as a transfer destination according to the type is provided.
Alternatively, the data is transferred to the data RAM unit 56.

That is, the video data packet data is transferred to the video decoder unit 58, the audio data packet data is transferred to the audio decoder unit 60, and the sub-picture data packet data is transferred to the sub-picture decoder unit 62.

At this time, since the pack data has a fixed length, the storage state in the data RAM unit 56, that is, the start address is at a fixed interval, the head of the pack data in the data RAM unit 56 always has an address of the same interval. The pack data is stored, and the management of the pack data does not need to be performed for the address, but only for the pack number.

In the process of discriminating the type of data, if the data is PCI data or DSI data as NV data indicating the reproduction position of video data, etc.
No data is transferred to the decoder, and this NV data is
The data is stored in the data RAM unit 56. This NV data is
It is referred to by the system CPU unit 50 as needed and used when performing special reproduction of video data. At this time, the PCI data and the DSI data are identified by a substream ID assigned to them.

When reproduction of one cell is completed, cell information to be reproduced next is obtained from cell reproduction order information in the program chain data, and reproduction is continued in the same manner.

The sub-picture decoder 62 shown in FIG. 1 performs a decoder 62B for decoding the sub-picture data supplied from the system processor 54 and performs a highlight process on the sub-picture data decoded by the decoder 62B. A highlight processing unit 62C is provided. The highlight processing unit 62C is provided with the system CP
Highlight processing is performed in accordance with X and Y coordinate values, color codes, and highlight color / contrast values indicating a rectangular area in which a selection item as highlight information supplied from the U unit 50 is displayed.

The decoder 62B expands pixel data compressed by run-length compression as sub-picture data according to emphasized pixels, pattern pixels, background pixels, and the like.

As shown in FIG. 72, the highlight processing section 62C includes a highlight area setting / judgment section 180, a default color / contrast setting section 181, and a highlight color /
It comprises a contrast setting section 182, a selector 183, and a color palette register 184.

The highlight area setting / judgment section 180 includes X, Y coordinate values indicating a rectangular area (designated highlight area) in which the selection items by the system CPU section 50 are displayed, and X, Y obtained by raster scan. A designated highlight area is determined based on the Y coordinate value, that is, pixel data X and Y coordinate values, and a switching signal indicating a highlight section is output. The output is supplied to the selector 183.

Default color / contrast setting section 181
Is to set a default display color and contrast for each pixel included in the sub-picture data.

Highlight color / contrast setting section 182
The highlight color and the contrast value are set by the system CPU unit 50.

The selector 183 sets the highlight area /
The default display color and contrast from the default color / contrast setting unit 181 are selectively stored in the color palette register 18 according to the switching signal from the determination unit 180.
4 or the highlight color / contrast from the highlight color / contrast setting unit 182 is output to the color palette register 184.

The color palette register 184 outputs a signal corresponding to the color and contrast supplied from the selector 183.

Therefore, when the highlight area setting / judgment section 180 judges that the area is outside the highlight area, the selector 183 outputs the default display color and contrast for each pixel data from the default color / contrast setting section 181. Is received and output to the color palette register 184, and the color signal from the color palette register 184 is output to the D / A & reproduction processing unit 64.

The highlight area setting / judgment section 1
When it is determined that the pixel is within the highlight area by the selector 80, the selector 183 receives the display color and contrast at the time of highlighting for each pixel data from the highlight color / contrast setting unit 182, and
4 and the color signal from the color palette register 184 is output to the D / A & reproduction processing unit 64.

Next, the menu reproduction process will be described with reference to FIG.
The description will be made using the optical disk 10 having the logical format shown in FIGS. 6 to 66 with reference to FIG. In FIG. 1, solid arrows between blocks indicate data buses, and broken arrows indicate control buses.

In the optical disk device shown in FIG. 1, when the power is turned on and the optical disk 10 is loaded,
System ROM and RAM 52 to system CPU
The unit 50 reads the initial operation program and operates the disk drive unit 30. Therefore, the disk drive unit 30 starts a read operation from the lead-in area 27, and reads a volume and a file structure area 70 following the lead-in area 27, the volume and the file structure of which are defined in accordance with ISO-9660 or the like. . That is, the system CPU unit 50 gives a read command to the disk drive unit 30 to read the volume and file structure area 70 recorded at a predetermined position of the optical disk 10 set in the disk drive unit 30, The contents of the structure area 70 are read and temporarily stored in the data RAM unit 56 via the system processor unit 54. The system CPU unit 50 includes a data RAM unit 5
6, information such as a recording position, a recording capacity, and a size of each file and management information as other information necessary for management are extracted through a path table and a directory record stored in a predetermined location of the system ROM & RAM unit 52. Transfer and save.

Next, the system CPU 50 refers to the information on the recording position and the recording capacity of each file from the system ROM & RAM 52 and acquires the video manager 71 composed of a plurality of files starting from the file number 0. That is, the system CPU unit 50 includes a system ROM
A read command is given to the disk drive unit 30 with reference to the information on the recording position and the recording capacity of each file acquired from the RAM unit 52, and the position and the position of a plurality of files constituting the video manager 71 existing on the root directory are determined. The size is acquired, the video manager 71 is read, and stored in the data RAM unit 56 via the system processor unit 54.

After that, the system CPU unit 50
As shown in the flowcharts of FIGS.
The number of total titles in 0, the number of chapters (number of programs) for each title, the number of audio streams for each title and the language of the audio stream, the number of sub-video streams for each title and the language of the sub-video stream are detected.

That is, the system CPU unit 50 searches the title search pointer table (TT_SRPT) 79, which is the second table of the video manager 71 (step S51). System CPU 50
Is the title search pointer table (TT_SRP
T) 79, the number of title search pointers (TT_Ns) described in the information (TT_SRPTI) 92 of the title search pointer table in the optical disc 10
Is obtained (step S52).

Also, the system CPU unit 50 calculates the number of chapters (number of programs) described in each title search pointer (TT_SRP) 93 in the title search pointer table (TT_SRPT) 79 as the number of part-of-titles (PTT_Ns). The number of chapters (the number of programs) for each title is obtained (step S5)
3).

Further, the system CPU unit 50 starts the start address (VT) of the video title set 72 described in each title search pointer (TT_SRP) 93.
S_SA), the first of each video title set 72 is used.
The video title set information (VT
Video Title Set Direct Access Pointer Table (VTS_PTT_SRPT) 99 in SI) 94
Is searched (step S54). The system CPU unit 50 obtains the number of audio streams for each title from the number of audio streams (VTS_AST_Ns) described in the table (VTS_DAPT) 99 for each video title set 72, and obtains the number of audio streams from each subtitle stream (VTS_SPST_Ns). The number of sub-video streams for each title is obtained (step S5).
5).

Further, the system CPU unit 50 stores a table (VTS_DAP) for each video title set 72.
T) 99 audio stream attributes (VTS_AST)
The language of each audio stream of each title is obtained from the language code of each audio stream described in (_ATR) (step S56).

Further, the system CPU unit 50 stores a table (VTS_DAP) for each video title set 72.
T) 99 sub-video stream attributes (VTS_SPST_
The language for each sub-picture stream of each title is obtained from the language code of the sub-picture for each sub-picture stream described in (ATR) (step S57).

[0189] The system CPU unit 50 controls the video manager information (VMGM) of the video manager 71.
75, a video manager menu PGCI unit table (VMGM_PGC) which is the fourth table.
(I_UT) 81 is searched (step S58). The video manager menu PGCI unit search pointer (VMGM_LU) in which the same language code as the language set in the playback device is described by this search
_SRP) 81B is searched (step S59).

When the video manager menu PGCI unit search pointer (VMGM_LU_SRP) 81B in which the same language code is described is searched, the system CPU 50 searches for the pointer (VMGM_LU_SRP).
_LU_SRP) 81B corresponding to the video manager menu language unit (VMGM_LU) 81C in the video manager menu PGC information search pointer (VMGM_PGCI_SRP) 81E. A search is performed (step S60), and it is determined whether or not a main menu as a root menu exists by this search, and whether or not a title menu (video title set menu) exists (step S61).

When the main menu exists, the system CPU unit 50 executes the menu I of the root menu.
Video manager menu PGC in which D is described
Information search pointer (VMGM_PGCI_SRP) 8
1E, the start address of the VMGM program chain information (VMGM_PGCI) 81F is determined by the parameter (VMGM_PGCI_SA) according to the corresponding VMGM program chain information (VMGM_PG).
CI) 81F, and reads the contents of the head video object unit (VOBU) 8 described in the VMGM program chain information (VMGM_PGCI) 81F.
5 using the start address (C_FVOBU_SA) of the memory table 5 as the start address of the main menu.
6A (step S62).

When a title menu is present, the system CPU unit 50 searches for a video manager menu PGC information search pointer (VMGM_PGCI_
The start address of the VMGM program chain information (VMGM_PGCI) 81F described in one of the SRP (81) (SRP) 81E is determined by the parameter (VMGM_PGCI_SA) according to the corresponding VMGM program chain information (VM).
GM_PGCI) 81F and read out the VMGM
Program chain information (VMGM_PGCI) 81F
The first video object unit (V
OBU) 85 start address (C_FVOBU_S)
A) is stored in the memory table 56A as the start address of the title menu (step S63).

Further, the system CPU unit 50 controls the video title set menu PGCI unit table (VTCI) in the video title set information (VTSI) 94, which is the first table for each video title set 72.
SM_PGCI_UT) 111 is searched (step S64). By this search, the video title set menu PGCI unit search pointer (VTSM_LU_SRP) 111B in which the same language code as the language set in the playback device is described is searched (step S65).

When the video title set menu PGCI unit search pointer (VTSM_LU_SRP) 111B in which the same language code is described is searched, the system CPU unit 50 sets the pointer (VTS
(M_LU_SRP) 111B corresponding to the video title set menu language unit (VTSM_LU) 111
A menu ID described in each video title set menu program chain category (VTSM_PGC_CAT) of each video title set menu of the video title set menu PGC information search pointer (VTSM_PGCI_SRP) 111E in C is searched (step S66).
Through this search, it is determined whether or not a sub-picture menu, an audio menu, an angle menu, a chapter (program) menu exists, and it is also determined whether or not a title menu exists (step S67).

If such a menu exists, the system CPU unit 50 transmits the VTSM program chain information described in one of the video title set menu PGC information search pointers (VTSM_PGCI_SRP) 111E in which the menu ID is described. (V
The start address of the (TSM_PGCI) 111F is determined by the parameter (VTSM_PGCI_SA) and the corresponding VT
SM program chain information (VTSM_PGCI) 1
11F is read, and the start address (C_FVOBU_SA) of the head video object unit (VOBU) 85 described in the VTSM program chain information (VTSM_PGCI) 111F is used as the start address of the corresponding menu in the memory table 56.
A is stored in A (step S68).

Thus, each video title set 72
The start address of each sub-picture menu, audio menu, angle menu, and chapter (program) menu is stored in the memory table 56A.

As a result, as shown in FIG. 75, a start address corresponding to each menu corresponding to the language set in the playback device is stored in the memory table 56A.

Therefore, when the menu key 5k of the remote control 5 is turned on, the system CPU 50
Determines the reproduction of the main menu, and determines whether the main menu exists. If it is determined that the main menu exists, the system C
The PU unit 50 controls the start address (C_FVO) of the head video object unit (VOBU) 85 stored corresponding to the main menu of the memory table 56A.
BU_SA) is read out, and the main menu data corresponding to this address is read out from the area corresponding to the video object set (VMGM_VOBS) 76 for the video manager menu (VMGM) 75 on the optical disc 10 and reproduced. The reproduced data is input to the data RAM unit 56 via the system processor unit 54. The data cell 84 is supplied to the video decoder unit 58, the audio decoder unit 60, and the sub-picture decoder unit 62 based on the reproduction time information, and is decoded.
Then, the signal is converted by the reproduction processing unit 64, and the converted
6, the image of the main menu is reproduced, and the sound is reproduced from the speaker unit 8.

Further, when the title key 51 of the remote control 5 is turned on, or when the "1" key corresponding to the title is turned on while the main menu is being played, or when normal playback is started. At times, the system CPU unit 50 determines the reproduction of the title menu, and determines whether or not the title menu exists. As a result of this determination, when it is determined that the title menu exists, the start address (C_F) of the head video object unit (VOBU) 85 stored corresponding to the title menu in the memory table 56A.
VOBU_SA) is read out, and the title menu data corresponding to this address is read out from the area corresponding to the video object set (VMGM_VOBS) 76 for the video manager menu (VMGM) 75 on the optical disc 10 and reproduced. The reproduced data is transferred to the data RAM unit 56 via the system processor unit 54.
Is input to The data cell 84 stores the video decoder 58 and the audio decoder 60 based on the reproduction time information.
And supplied to the sub-picture decoder unit 62 and decoded,
The signal is converted by the D / A and reproduction processing unit 64 and the monitor unit 6
As shown in FIG. 77A, the image of the title menu is reproduced, and the sound is reproduced from the speaker unit 8.

When the “2” key corresponding to a chapter is input while the main menu is being reproduced,
Alternatively, after the title is selected by the normal reproduction, the system CPU unit 50 determines the reproduction of the chapter menu corresponding to the currently selected title, and determines whether the chapter menu exists. If it is determined that the chapter menu exists,
The first video object unit (VOB) stored corresponding to the chapter menu of the memory table 56A
U) Start address of 85 (C_FVOBU_SA)
Is read, and the data of the chapter menu corresponding to this address is stored in the video object set (VTSM) for the video title set menu (VTSM) on the optical disk 10.
(SM_VOBS) 95 and read it out. The reproduced data is input to the data RAM unit 56 via the system processor unit 54. The data cell 84 is supplied to the video decoder unit 58, the audio decoder unit 60, and the sub-picture decoder unit 62 based on the reproduction time information and is decoded. 77B, the image of the chapter menu as shown in FIG. 77B is reproduced, and the sound is reproduced from the speaker unit 8.

When the "3" key corresponding to audio is input while the main menu is being reproduced, or after a title is selected by normal reproduction,
The system CPU unit 50 determines the reproduction of the audio menu corresponding to the currently selected title, and determines whether the audio menu exists. If it is determined that an audio menu exists, the start address (C_FVOB) of the head video object unit (VOBU) 85 stored corresponding to the audio menu in the memory table 56A is determined.
U_SA) is read out, and the audio menu data corresponding to this address is read out from the area corresponding to the video object set (VTSM_VOBS) 95 for the video title set menu (VTSM) on the optical disc 10 and reproduced. The reproduced data is input to the data RAM unit 56 via the system processor unit 54. The data cell 84 is supplied to the video decoder unit 58, the audio decoder unit 60, and the sub-picture decoder unit 62 based on the reproduction time information, and is decoded.
Then, the signal is converted by the reproduction processing unit 64, and the converted
As shown in FIG. 7 (c), the image of the audio menu is reproduced and the sound is reproduced from the speaker unit 8.

When the "4" key corresponding to the sub-picture is pressed while the main menu is being reproduced, or after the title is selected by the normal reproduction, the system CPU unit 50 selects the currently selected sub-picture. The reproduction of the sub-picture menu corresponding to the title being determined is determined, and whether or not the sub-picture menu exists is determined. As a result of this determination, when it is determined that the sub-picture menu exists, the start address (C_FVOBU_SA) of the head video object unit (VOBU) 85 stored corresponding to the sub-picture menu in the memory table 56A is read, The data of the sub-picture menu corresponding to this address is stored in the video title set menu (VTSM) of the optical disc 10.
Video object set (VTSM_VOB)
S) Read from the area corresponding to 95 and reproduce. The reproduced data is input to the data RAM unit 56 via the system processor unit 54. The data cell 84 is supplied to the video decoder unit 58, the audio decoder unit 60, and the sub-picture decoder unit 62 based on the reproduction time information and is decoded. As shown in FIG. 77 (d), the image of the sub-picture menu is reproduced and the sound is reproduced from the speaker unit 8.

When the “5” key corresponding to the angle is input while the main menu is being reproduced,
Alternatively, after the title is selected by the normal reproduction, the system CPU unit 50 determines the reproduction of the angle menu corresponding to the currently selected title, and determines whether or not the angle menu exists. If it is determined that the angle menu exists,
The first video object unit (VOB) stored corresponding to the angle menu of the memory table 56A
U) Start address of 85 (C_FVOBU_SA)
Is read, and the data of the angle menu corresponding to this address is stored in the video object set (VTSM) for the video title set menu (VTSM) on the optical disk 10.
(SM_VOBS) 95 and read it out. The reproduced data is input to the data RAM unit 56 via the system processor unit 54. The data cell 84 is supplied to the video decoder unit 58, the audio decoder unit 60, and the sub-picture decoder unit 62 based on the reproduction time information and is decoded. The image of the angle menu as shown in FIG. 77 (e) is reproduced, and the sound is reproduced from the speaker unit 8.

Therefore, the system CPU 50 stores the obtained position data of each menu in the data RAM 56.
Since the menu is stored in the menu table 56A, the required menu can be easily reproduced using this table.

Note that the system CPU unit 50 operates the information management table (VMG) of the video manager (VMGI) 75.
I_MAT) 78, the number of streams of video, audio, and sub-pictures for the video manager menu and the respective attribute information are obtained, and based on the attribute information, each video decoder unit 58, audio decoder unit 60 and sub-picture The parameters for reproducing the video manager menu are set in the decoder section 62.

Next, the processing when the menu is reproduced will be described in more detail with reference to the flowchart shown in FIG.

That is, the start address of the first VOBU in the cell and the PGC number as the start address for the menu to be reproduced, ie, the cell number, are stored in the system ROM / RAM section 52 (step S).
1).

Then, at the time when the preparation for reading the video title set is completed, a read command is given from the system CPU unit 50 to the disk drive unit 30, and the optical disk 10 is sought by the disk drive unit 30 based on the start address described above. (Step S2). The cells related to the designated program chain (PGC) are sequentially read from the optical disk 10 by the read command, and sent to the data RAM unit 56 via the system CPU unit 50 and the system processing unit 54 (step S3). . The transmitted cell data is stored in the data RAM unit 56 from the navigation pack 86, which is the first pack of the video object unit (VOBU) 85, as shown in FIG. Thereafter, the packet data of the video pack 88, the audio pack 91, and the sub-picture pack 90 of the video object unit (VOBU) are respectively processed by the packet transfer processor 200 into the video decoder 58, the audio decoder 60, and the sub-picture decoder 62. Is transferred to Navigation Pack 8
The PCI data and the DSI data as the packet data of No. 6 are sent to the data RAM unit 56 (step S4).

At this time, the system CPU 50 determines the highlight information (the contents of FIGS. 49 to 58 described above) corresponding to each display button based on the PCI data stored in the data RAM 56 (see FIG. 49 to FIG. 49). Step S5).

That is, for each button, the rectangular area of the button, the display color and contrast value for each pixel data before selection when the button is a selection button, and the display area and color for each pixel data after selection. When the display color and the contrast value and the button are the confirm button, the display color and the contrast value for each pixel data before being decided, and the display color and the contrast value for each pixel data after being decided are determined. The data is stored in the data RAM unit 56. As this pixel data, emphasized pixels 1 and 2, a pattern pixel, and a background pixel are prepared, and a display color and a contrast value for each are prepared.

As a result, the system CPU 50 outputs the X and Y coordinate values indicating the rectangular area corresponding to each button stored in the data RAM 56 to the highlight area setting / judgment section 180 of the highlight processing section 62C. At the same time, in correspondence with the scan position, the highlight processing unit 62C
Is output to the highlight color / contrast setting unit 182 (step S6).

Thus, the highlight area setting / judgment section 180 obtains the X and Y coordinate values indicating the rectangular area (designated highlight area) in which the selection items are displayed by the system CPU section 50 and the raster scan. X, Y
The designated highlight area is determined based on the coordinate values, that is, the pixel data X and Y coordinate values, and a switching signal indicating a highlight section is supplied to the selector 183 (step S7).

In the highlight color / contrast setting unit 182, the color and contrast value of the highlight by the system CPU unit 50 are set according to the X and Y coordinate values obtained by the raster scan (step S).
8).

Thus, the selector 183 selectively selects the default display color and contrast from the default color / contrast setting section 181 in response to the switching signal from the highlight area setting / judging section 180. Or highlight color /
The color and contrast at the time of highlight from the contrast setting unit 182 are output to the color palette register 184 (step S9).

The color palette register 184 outputs a signal corresponding to the color and contrast supplied from the selector 183 (step S10).

As a result, the highlight area setting / judgment section 1
When it is determined that the area is outside the highlight area by the selector 80, the selector 183 receives the default display color and contrast for each pixel data from the default color / contrast setting unit 181, and the color palette register 184.
And the color signal from the color palette register 184 is output to the D / A & reproduction processing unit 64.

The highlight area setting / judgment section 180
Is determined to be within the highlight area by the selector 183, the highlight color / contrast setting unit 18
The display color and the contrast at the time of highlighting for each pixel data from 2 are received and output to the color palette register 184, and the color signal from the color palette register 184 is output to the D / A & reproduction processing unit 64.

As a result, the color and contrast of the decoded sub-picture data of each pixel is changed in accordance with the highlight information, and the image synthesizing section 64A (FIG. 1) in the D / A & reproduction processing section 64 shown in FIG. 1).

Therefore, the main video data decoded by the video decoding unit 58 is supplied to the image synthesizing unit 64A in the D / A & playback processing unit 64, and the sub video decoding unit 62
The data is decoded by a decoder 62B in the image processing section 62 and supplied to an image synthesis section 64A in the D / A & reproduction processing section 64 via a highlight processing section 62C. As a result, the main video data and the sub video data are synthesized by the image synthesis unit 64A, and the synthesized image is displayed on the monitor unit 6.

For example, a main image as a background image shown in FIG. 79A and a sub-image made up of buttons as selection items shown in FIG. 79B are added to highlight information shown in FIG. 79C. Was combined with the highlighted image,
A composite image shown in FIG. 79 (d) is obtained. At this time, the background of the selected item is displayed in blue, and the character of the selected item is displayed in black.

The audio data decoded by the audio decoding unit 60 is transmitted to the D / A & reproduction processing unit 64.
, The audio corresponding to the menu or the main video is reproduced from the speaker unit 8.

In this menu display state, the user operates the key operation / display unit 4 or the remote controller 5
When the selection item highlighted by is selected, the system CPU unit 50 determines the corresponding highlight color and contrast value after the selection by the highlight processing unit 62C.
To the highlight color / contrast setting unit 182. As a result, the highlight color and contrast of the selected item are changed. At this time, the background of the selected item is displayed in red, and the character of the selected item is displayed in white.

Another example of the menu image will be described with reference to FIGS. 80 (a) to 80 (e).

That is, when the main video data as shown in FIG. 80 (a) and the sub video data as shown in FIG. 80 (b) are supplied, the menu image before selection is the same as FIG.
(C), the characters of the selection items for each of "1" and "2" are displayed in black and the background is displayed in gray.

Thereafter, when the selection item of “1” is selected by the key operation / display unit 4 or the remote controller 5, the system CPU unit 50 sets a rectangle corresponding to the selection item of “1” read from the PCI data. The X- and Y-coordinates indicating the area and the change content (highlight information) of the color or contrast of each pixel are set in the highlight processing unit 62C.

As a result, the sub-picture data decoded by the decoder 62B of the sub-picture decoding section 62 is changed in highlight color and contrast value corresponding to the selection item "1" by the highlight processing section 62C. / A & supplied to the image synthesizing section 64A in the reproduction processing section 64. As a result, the main video data and the sub video data are synthesized by the image synthesis unit 64A, and the synthesized image, that is, (d) of FIG.
As shown in (5), a menu image in which the display content of the selection item "1" is changed is displayed on the monitor unit 6.
For example, the character portion of the selection item “1” is displayed in white and the background is displayed in red.

When the selection item “2” is selected by the key operation / display unit 4 or the remote controller 5,
The system CPU unit 50 displays X, Y indicating a rectangular area corresponding to the selection item “1” read from the PCI data.
The coordinates and the change content (highlight information) of the color or contrast of each pixel are set in the highlight processing unit 62C.

As a result, the sub-picture data decoded by the decoder 62B of the sub-picture decoding unit 62 is changed in color and contrast value of the highlight corresponding to the selection item "1" by the highlight processing unit 62C. / A & supplied to the image synthesizing section 64A in the reproduction processing section 64. As a result, the main video data and the sub video data are synthesized by the image synthesis unit 64A, and the synthesized image, that is, (e) of FIG.
As shown in (5), a menu image in which the display content of the selection item “2” of the selection item has been changed is displayed on the monitor unit 6.
For example, the character portion of the selection item “2” is displayed in white and the background is displayed in red.

As a result, various menu screen changes can be easily realized without reading new video data.

By designating the selected item position information in association with the display coordinate system of the main image, the positional relationship between the main image and the sub-image can be easily determined.

FIGS. 81A and 81B show an embodiment of the relationship between the sub-picture data of the selected item and the highlight information as control data.

In the figure, the pixels represented by ○ are created by using pattern pixels, and the pixels represented by □ are created by using enhanced pixels 1.

FIG. 81 (a) shows a case in which pattern pixels of sub-picture data and emphasized pixels as shadows of the pattern pixels are used. In this case, by selecting the display color information after the selection of the control data, setting the color of the emphasized pixel 1 to a new color, and setting the other pixel colors and contrasts to the current color, the selected color is selected. The item can be changed in real time to a shade of a different color from other selection items.

FIG. 81 (b) shows a case where the sub-picture data is composed of only pattern pixels. In this case, after selecting the highlight information, the display color information is set to the new color of the pattern pixel, and the other pixels and the contrast are set to the current color, so that the selected item is selected. The user himself / herself can change in real time to a color different from other selection items.

In addition, by setting the contrast of the background pixel in the selection item area to 100% for the sub-picture data at the time of selection and to 0% at the time of non-selection, the contrast of the entire selection area at the time of selection is set. By using the structure of the sub-picture data and the content of the highlight information, such as control for changing colors, various formats can be realized in real time.

If the identified cell type is a menu, for example, the display does not automatically shift to the next cell reproduction, and enters a standby state in the last frame display state at the time when the cell reproduction ends.

Therefore, when a menu cell is reproduced, the cell is in a still image state in the final display state of the cell. In the cell, the NV pack 88 is always stored in a fixed unit of video data.
Is inserted, the highlight information for the above-described menu is stored in the data RAM unit 56.

When the cell reproduction is completed, the system CPU 50 waits for a user event (key input or the like), and retrieves information (highlight information) related to the menu from the PCI data stored in the data RAM unit 56. The processing of the selection item corresponding to the user selection of the menu is executed while referring to the menu.

Next, in a state where a title or the like is selected by the above menu, the optical disc 1 having the logical format shown in FIGS. 6 to 66 with reference to FIG.
The operation of reproducing movie data from 0 will be described.

With the desired title selected,
When the reproduction key 4c of the key operation / display unit 4 or the reproduction key 5d of the remote controller 5 is turned on, the system processor 50 sets the title search pointer table information (TT_SRPTI) 9
2 to the title search pointer table (TT_SRP
T) Acquire the final address of 79 and operate the key /
A video title set number (VTSN), a program chain number (PGCN), and a video title set corresponding to an input number from a title search pointer (TT_SRP) 93 corresponding to an input number from the display unit 4 or a title number selected by the remote controller 5. Is obtained (VTS_SA). If there is only one title set, one title search pointer (TT_SRP) 93 is searched regardless of the presence / absence of an input number from the key operation / display unit 4 and selection of the title number by the remote controller 5, and the title is searched. The set start address (VTS_SA) is obtained. Start address of this title set (VTS
_SA), the system CPU unit 50 acquires the target title set.

Next, from the start address (VTS_SA) of the video title set 72 shown in FIG. 13, video title set information (VTSI) 94 of the title set is obtained as shown in FIG. The video title set information management table (VTSI_MAT) 98 of the video title set information (VTSI) 94 shown in FIG.
The video title set information management table (VT) shown in FIG.
SI_MAT) 98 end address (VTI_MAT_
EA) and the number of streams of audio and sub-picture data (VTS_AST_Ns, VTS_SP)
ST_Ns) and attribute information (VTS_V_ATR, VTS_A_AT) of video, audio, and sub-picture data
R, VTS_SPST_ATR), each unit of the playback apparatus shown in FIG. 1 is set according to its attribute.

When the menu (VTSM) for the video title set (VTS) has a simple configuration, the video title set information management table (VTSI_MAT) 98 shown in FIG. Video object set (VTSM_
VOBS) 95 start address (VTSM_VOB)
S_SA) is obtained, and the video object set (VTSM_VOBS) 95 displays the menu of the video title set. With reference to this menu, the title (VTS) in the title set (VTS) is simply selected without particularly selecting the program chain (PGC).
T) Video object set (VTT_VOB)
S) When reproducing 96, the video object set 96 is reproduced from the start address (VTSTT_VOBS_SA) shown in FIG.

When the program chain (PGC) is designated by the key operation / display unit 4 or the remote controller 5, the target program chain is searched according to the following procedure. The search of the program chain is not limited to the program chain for the title in the video title set, and the same procedure is applied to the search for the program chain for the menu even for a relatively complicated menu in which the menu is composed of the program chain. Is adopted. Video title set information (V
TSI) 94 management table (VTSI_MAT) 98
The video title set (VT shown in FIG.
S) The program chain information table (VTS_P) in
(GCIT) 100 is obtained and the start address is acquired.
The information (VTS_PGCIT_I) 102 of the VTS program chain information table shown in FIG. From this information (VTS_PGCIT_I) 102, the number of program chains (VTS_PGC_I_
Ns) and the end address of the table 100 (VTS_P
GCIT_EA) is obtained.

When the program chain number is designated by the key operation / display unit 4 or the remote control 5, the VTS_PGCI shown in FIG.
T search pointer (VTS_PGCIT_SRP) 10
3 to the program chain category shown in FIG. 26 and its search pointer (VTS_PGCIT_SR).
A start address of VTS_PGC information 104 corresponding to P) 103 is obtained. This start address (V
TS_PGCI_SA) reads out the program chain general information (PGC_GI) shown in FIG.
According to the general information (PGC_GI), the program chain (PGC) category and playback time (PGC_C)
AT, PGC_PB_TIME, etc. are obtained, and the cell reproduction information table (C_PBIT) and the cell position information table (C_P) described in the general information (PGC_GI) are obtained.
OSIT) 108 start address (C_PBIT_
SA, C_POSIT_SA). From the start address (C_PBIT_SA), a video object identifier (C_VOB_IDN) and a cell identification number (C_IDN) as shown in FIG. 36 are obtained as the cell position information (C_POSI) shown in FIG.

The start address (C_POSIT)
_SA) to the cell reproduction information (C_PBI) shown in FIG.
FIG. 3 described in the reproduction information (C_PBI).
4, the start address (C_FVOBU_SA) of the first VOBU 85 and the start address (C_LVOBU_SA) of the last VOBU are obtained, and the target cell is searched. The order of cell playback is
The PGC program map (PGC_P shown in FIG. 27)
The reproduction cells 84 are determined one after another with reference to the program map shown in FIG. The data cells 84 of the program chain determined in this way are successively read from the video object 144 and input to the data RAM unit 56 via the system processor unit 54. The data cell 84 is supplied to the video decoder unit 58, the audio decoder unit 60, and the sub-picture decoder unit 62 based on the reproduction time information, and is decoded.
The signal is converted by the reproduction processing unit 64 and the image is reproduced on the monitor unit 6 and the sound is reproduced from the speaker unit 8.

Further, normal reproduction of video data using the navigation pack 86 will be described in more detail with reference to flowcharts.

In the normal reproduction of the video data, when the normal reproduction is started as shown in FIGS. 82 and 83, after the start, the video manager information (VMGI) 75 is transmitted to the system CPU 50 as described above. And stored in the system ROM / RAM unit 52 (step S12). Similarly, based on the video manager information (VMGI) 75, the video title set information (VTS) of the video title set (VTS) 72
I) When 94 is read, the video title set menu is displayed in the video object set (VTSM_
VOBS) 95 is displayed on the monitor unit 6 as described above. Based on this display, the user determines the title set 72 to be reproduced and the reproduction conditions as shown in step S13. When the determined title set 72 is selected using the key operation / display unit 4, step S1
20 in the title set 72 selected as shown in FIG.
The program chain information table (VTS_PG
The data of the cell reproduction information table (C_PBIT) 107 shown in FIGS. 27, 33, and 34 from the CIT 100 is read by the system CPU 50 and stored in the system ROM / RAM 52.

The system CPU 50 proceeds to step S15.
As shown in the figure, a program chain number (VTS_PGC_N) for starting reproduction according to the reproduction condition input from the key operation / display unit 4 or the remote controller 5.
s), an angle number (ANGNs), an audio stream number, and a sub-picture stream number are determined using each menu as described above. For example, the boxing world champion round 11 is selected as the title of the program chain, and it is decided to display Japanese subtitles as a sub-picture based on the English narration.
In addition, the user performs a selection such as determining an image in which the battle between the two players can always be well viewed as an angle.
The determined sub-video number and audio stream number are set in the register 54B of the system processor 54 as shown in step S16. Similarly, the reproduction start times of the system processor unit 54, the video decoder unit 58, the audio decoder unit 60, and the system time clocks (STC) 54A,
8A, 60A and 62A are set. Also, the start address and PGC number of the first VOBU in the cell as the start address, that is, the cell number is the RO for the system.
It is stored in the M / RAM unit 52.

As shown in step S17, when the preparation for reading the video title set is completed, a read command is given from the system CPU unit 50 to the disk drive unit 30, and based on the start address described above, the optical disk 10 Seeking by
The cells related to the designated program chain (PGC) are successively read from the optical disk 10 by the read command, and sent to the data RAM unit 56 via the system CPU unit 50 and the system processing unit 54. As shown in FIG. 8, the transmitted cell data is transferred from the navigation pack 86, which is the first pack of the video object unit (VOBU) 85, to the data RAM unit 5.
6 is stored. After that, the video pack 88 and the audio pack 9 of the video object unit (VOBU)
1 and the sub-picture pack 90 are respectively the video decoder unit 58,
The data is distributed to the audio decoder section 60 and the sub-picture decoder section 62, decoded by the respective decoders, and sent to the D / A and data reproducing section 64. As a result, a video signal is sent to the monitor unit 6, an audio signal is sent to the speaker unit 8,
The display of the video with the sub-video starts and the reproduction of the audio starts.

During reproduction of such video and audio, if there is an interrupt processing from the key operation / display unit 4 or the remote controller 5, the obtained key data is stored in the system RAM / ROM unit 52. Is stored. If there is no key data, it is checked whether or not an interruption of the reproduction end has been received from the drive unit as shown in step S19. If there is no interruption to end the reproduction, the transfer of the navigation pack 86 is waited as shown in step S20. If the transfer of the navigation pack 86 has been completed, the system RAM / ROM unit 52 sets the logical sector number (NV_PCK_LSN) in the navigation pack 86 as the current logical block number (NOWLBN) as shown in step S21.
Is stored in

When the transfer of the NV pack 86 is completed, it is checked whether the NV pack 86 is the last NV pack 86 in the cell. That is, as shown in step S22, whether or not the last navigation pack 86 in the cell 84 is checked.
This check is made by comparing the start address (C_LVOBU_SA) of C_LVOBU in the cell reproduction information table (C_PBI) 107 shown in FIG. 34 with the address (V_PCK_LBN) of the navigation pack 86. If the NV pack 86 is not the last in the cell, the process returns to step 19 again. N
If the V pack 86 is the last in the cell 84, it is checked whether or not the angle has been changed as shown in step S23. The angle can be changed from the key operation / display unit 4 or the remote controller 5 through the system CP.
The determination is made based on whether or not the angle change is input to the U section 50. If the angle has not been changed, it is checked whether or not the cell 84 is the last cell of the program chain (PGC) to which the cell 84 belongs, as shown in step S24. This check is made based on whether the cell 84 shown in FIGS. 27 and 33 is the last cell of the cell reproduction information table (C_PBIT) 107. That is, it is checked by the number of cells constituting the program chain and the identification number of the reproduced cell. If the cell does not correspond to the last cell of the program chain (PGC), the flow returns to step S19.

Cell 84 is a program chain (PGC)
If the cell is the last cell, the program chain is determined to have ended and the next program chain (PGC) is designated. Except for special cases, the program chains are reproduced in the order of their numbers, so that the program chain is reproduced in step S25.
As shown in (1), by adding 1 to the number of the program chain whose reproduction has been completed, the program chain number to be reproduced next is set. It is checked in step S26 whether there is a program chain with the set program chain number. If there is no program chain to be reproduced next, the flow shifts to the flow of a reproduction end procedure shown in FIG. 84 described later. If there is a set program chain, as shown in step S27, the address of the cell of the reset program chain, that is, the cell reproduction information (C_PB) shown in FIG.
I) The start address (C_FVOBU_SA) of C_FVOBU 85 in 107 is obtained as the current logical block number. As shown in step S28, this start address (C_FVOBU_SA) is the last address (E
It is checked whether it is equal to an address obtained by adding 1 to (NDLBN). If they are equal, it means that the cell having the continuous address is reproduced, so that the process returns to step S18 again. If the addresses are not equal, since the cell addresses are not consecutive as shown in step S29, the system CPU 50
Issues a read end address command indicating the end address of the current video object unit, and causes the disk drive unit 30 to temporarily stop the read operation at the specified address. Thereafter, as shown in step S30, a read command is again provided from the system CPU unit 50 to the disk drive unit 30, and a start address is provided to the disk drive unit 30, and the process returns to step S19 to start seeking the navigation pack 86. Is done.

If the reproduction has ended in step S19, or if there is no program chain to be reproduced next in step S26, step 3 in FIG.
As shown in FIG. 1, general information (PCI-G
End PTM (VOBU_EPTM) described in I)
Is referred to, and this end PTM (VOBU_EPTM)
Is equal to the system time clock (STC), the display of the screen of the monitor 6 is stopped as shown in step 32, and a data transfer stop command is given from the system CPU to the disk drive unit 30 as shown in step S33. The data transfer is stopped, and the reproduction operation ends.

When an angle change is input from the key operation / display unit 4 or the remote controller 5 in step S23, it is checked whether or not there is angle data as shown in step S40 of FIG. The presence or absence of this angle is determined by the PCI data 1 of the navigation pack 86.
13 and the DSI data 115 are described as angle information (NSML-AGLI, SML_AGLI). Here, any information is checked by the system CPU unit 50 in response to an input from the key operation / display unit 4 or the remote controller 5. If there is no angle to be changed in step 40, the fact that there is no angle data is displayed on the key operation / display unit 4 or the monitor unit 6 as shown in step S41. After the display indicating that there is no angle data, the process proceeds to step S24. If there is angle data, an angle number to be changed is designated from the key operation / display unit 4 or the remote controller 5 as shown in step S42. Here, as already mentioned,
Angle information of I data and DSI data (NSML_
AGLI or SML_AGLI) is specified to change the angle. However, when there is only one angle information, the selection is limited to one. When the angle number is designated, as shown in FIG. 47 and FIG. 48, the target address (NSML_AGL_C__) of the angle cell corresponding to the designated angle number
DSTA, SML_ANL_C_DSTA) are obtained in step S43. A cell is searched at this address, and the logical block number (N
OWLBN). In particular, when the angle is changed using the PCI, the system CPU 50 performs mute processing on the reproduction of the video and audio data and pause processing on the reproduction of the sub-picture in accordance with the angle changing operation. Is applied. With this processing, the system time clock (STC) of each section of the reproducing apparatus is stopped, and the video, audio and sub-picture decoder section 5 has already been stopped.
The buffers in 8, 60 and 62 are cleared to make it possible to accept the changed angle data (step S44). At the same time, as shown in step 45, the system CPU unit 50 issues a read end address command and causes the disk drive unit 30 to temporarily stop the read operation. Thereafter, as shown in step S46, a read command is given from the system CPU unit 50 to the disk drive unit 30, and the cell is searched and selected with the set logical block number to be sought, that is, the start address of the selected angle cell. Transfer of the angle cell data is started.

With the start of the transfer, the transfer of the navigation pack of the first cell which is the change angle destination is again waited. As shown in step S48, it is checked whether the transfer of the navigation pack has been completed due to the data transfer. If there is no transfer of the navigation pack, the process returns to step 47 again. When the navigation pack 86 is transferred, each system time clock (STC) is set with reference to the SCR (NV_PCK_SCR) of the NV pack 86 described in the DSI general information (DSIG) of the navigation pack 86. Thereafter, the mute state of the video and audio and the pause state of the sub-picture set in step S44 are released, and the operation of the system time clock (STC) is started. Thereafter, as in the normal reproduction, step S shown in FIG.
21 is executed.

Next, referring to FIGS. 86 to 91, video data in the logical format shown in FIGS. 6 to 66, a method of recording the video data on the optical disk 10 for reproducing the video data, and the method of recording are applied. The recording system will be described.

FIG. 86 shows an encoder system for generating a video file 88 of a title set 84 in which video data is encoded. In the system shown in FIG. 86, as sources of main video data, audio data and sub-video data, for example, a video tape recorder (VTR) 201, an audio tape recorder (ATR) 202, and a sub-picture reproducer (Subpicture source)
e) 203 is adopted. These generate main video data, audio data, and sub-video data under the control of a system controller (Sys con) 205, which are respectively a video encoder (VENC) 206, an audio encoder (AENC) 207, and a sub-video encoder (SP
ENC) 208, and likewise under the control of a system controller (Syscon) 205, these encoders 20
The main video data, audio data, and sub-video data (Comp Video,
Memory 210, 21 as Comp Audio, Comp Sub-pict
1, 212.

The main video data, audio data and sub video data (Comp Video, Comp Audio, Comp Sub-pic
t) is output to the file formatter (FFMT) 214 by the system controller (Sys con) 205, converted into the file structure of the video data of this system as described above, and the setting condition, attribute, and high of each data. Management information such as write information is stored in the memory 216 by the system controller (Sys con) 205 as a file.

A standard flow of an encoding process in the system controller (Sys con) 205 for creating a file from video data will be described below.

The main video data and audio data are encoded according to the flow shown in FIG. 87, and the encoded main video data and audio data (Comp Video, Comp Aud
io) data is created. That is, when the encoding process is started, parameters necessary for encoding the main video data and the audio data are set as shown in step 70 of FIG. Some of the set parameters are stored in the system controller (Sys con) 205.
And file formatter (FFM
T) 214. As shown in step S271, the main video data is pre-encoded using the parameters, and the optimal code amount distribution is calculated. Step S2
As shown at 72, the main video is encoded based on the code amount distribution obtained by the pre-encoding. At this time, the encoding of the audio data is performed at the same time. If necessary, as shown in step S273, partial re-encoding of the main video data is executed, and the main video data of the re-encoded portion is replaced. Through this series of steps, the main video data and audio data are encoded. Steps S274 and S274
As shown at 275, the sub-picture data is encoded to create encoded sub-picture data (Comp Sub-pict).
That is, parameters necessary for encoding the sub-picture data are set in the same manner. Some of the parameters set as shown in step S274 are stored in the system controller (Sys con) 205 and used by the file formatter (FFMT) 214. Sub-picture data is encoded based on these parameters. By this processing, the sub-picture data is encoded.

According to the flow shown in FIG. 88, the encoded main video data, audio data, and sub video data (Com Video, Comp Audio, Comp Sub-pict) are combined to form a video as described with reference to FIG. Converted to the title set structure of the data. That is, step S27
As shown in FIG. 6, a cell as a minimum unit of video data is set, and cell reproduction information (C_PBI) relating to the cell is created. Next, as shown in step S277, the configuration of the cells constituting the program chain, the main video, the sub-video, the audio attributes, and the like are set (for some of these attribute information, information obtained at the time of each data encoding is used. 12), video title set information management table information (VTSI_MAT) 98 including information on a program chain and a video title set time search map table (VTS_TMAPT) 1 as shown in FIG.
01 is created. At this time, a video title set part of title search pointer table (VTS_PTT_SRPT) is also created as needed. The encoded main video data, audio data, and sub-video data (Com Video, Comp Audio, Comp Sub-pict) are subdivided into fixed packs, and can be reproduced in the order of the time code of each data in VOBU units. Each data cell is arranged with an NV pack arranged at the head thereof to form a video object (VOB) composed of a plurality of cells as shown in FIG. 6, and this set of video objects is formatted into a title set structure. Is done.

In the flow shown in FIG. 88, the program chain information uses the database of the system controller (Sys con) 205 in the process of step S277, or re-inputs data as necessary. And is described as program chain information (PGI).

FIG. 89 shows a disc formatter system for recording a title set formatted as described above on an optical disc. As shown in FIG. 89, in the disk formatter system, these file data are stored in the volume formatter (VF) from the memories 220 and 222 storing the created title set.
MT) 226. In the volume formatter (VFMT) 226, management information is extracted from the title sets 84 and 86, a video manager 71 is created, and logical data in a state to be recorded on the optical disc 10 in the arrangement order shown in FIG. 6 is created. Data for error correction is added to the logical data created by the volume formatter (VFMT) 226 by the disk formatter (DF).
MT) 228 and reconverted into physical data to be recorded on the disk. Modulator 230
In, the physical data created by the disk formatter (DFMT) 228 is converted into recording data to be actually recorded on the disk, and the modulated recording data is recorded on the disk 10 by the recorder 232.

A standard flow for creating the above-mentioned disc will be described with reference to FIGS. 90 and 91. FIG.
0 shows a flow in which logical data to be recorded on the disk 10 is created. That is, step S28
As shown by 0, parameter data such as the number of video data files, the order of arrangement, and the size of each video data file are set first. Next, from the parameters set as shown in step S281 and the video title set information 281 of each video title set 72, the video manager 7
1 is created. Thereafter, as shown in step S282, the video manager 71 and the video title set 72
, Data is arranged along the corresponding logical block number, and logical data to be recorded on the disk 10 is created.

Thereafter, a flow for creating physical data to be recorded on a disc as shown in FIG. 91 is executed. That is, as shown in step S283, the logical data is divided into a fixed number of bytes, and error correction data is generated. Next, as shown in step S284, the logical data divided into a fixed number of bytes and the generated data for error correction are combined to create a physical sector. afterwards,
As shown in step S285, physical data is created by combining physical sectors. As described above, modulation processing based on a certain rule is performed on the physical data generated by the flow shown in FIG. 91 to create recording data. Thereafter, the recording data is recorded on the disk 10.

The data structure described above can be applied not only to a case where the data is recorded on a recording medium such as an optical disk and distributed to a user for reproduction, but also to a communication system as shown in FIG. That is, in accordance with the procedure shown in FIGS.
An optical disk 10 storing a video manager 71, a video title set 72, and the like as shown in FIG. 1 is loaded into a reproducing apparatus 300, and encoded data is digitally extracted from a system CPU 50 of the reproducing apparatus. The signal may be transmitted to the user or the cable subscriber side by radio wave or cable by 310. Also, data encoded on the provider side such as a broadcasting station by the encoding system 320 shown in FIGS. 86 and 89 is created, and this encoded data is likewise transmitted to the
10 may be sent to the user or cable subscriber side by radio wave or cable. In such a communication system, the information of the video manager 71 is first modulated by the modulator / transmitter 310 or directly distributed to the user free of charge, and when the user is interested in the title, the user or the subscriber is notified. The title set 72 is transmitted to the user by the modulator / transmitter 310 via radio waves or a cable in response to a request from the user. In the transfer of the title, first, the video title set information 94 is transmitted under the control of the video manager 71, and then the title video object 95 in the video title set reproduced by the title set information 94 is transferred. At this time, if necessary, a video object 95 for a video title set menu is also sent. The transmitted data is received by the receiver / demodulator 400 on the user side, processed as encoded data by the system CPU unit 50 of the reproducing apparatus on the user or subscriber side shown in FIG. Is played.

In the transfer of the video title set 72, the video object sets 95 and 96 are transferred in units of the video object unit 85 shown in FIG. In the video object unit 85, an NV pack 86 in which video reproduction and search information is stored is arranged at the head thereof. Moreover, this NV pack 86
Contains the addresses of the video object units to be reproduced before and after the video object unit 85 to which the NV pack 86 belongs. Therefore, during the transfer of the video object unit 85, the video object unit 85 Even if the video object unit 85 is missing, the user can reliably reproduce the video data by requesting the retransfer of the missing video object unit 85. Further, even if the transfer is not performed in the playback order of the video object units, the system ROM / RAM unit 52 on the user side holds the correct program chain playback information, and refers to the address data of the NV pack 86 to perform the playback order. Can be instructed by the system CPU unit 50.

In the above description, the video object unit has been described as a data string including video, audio, and sub-pictures. However, it is sufficient that the video object unit includes any of video, audio, and sub-pictures. It may be constituted only by a pack.

[0269]

As described above, according to the present invention, by using video data having main video data and sub-video data, the burden on the playback device is reduced, and real-time processing according to the user's selection result is achieved. Can react to

Further, according to the present invention, a menu is created from main video data as a background image of a menu and sub-video data consisting of menu selection items or fixed items, and a sub-video data selection item or fixed item is created. By changing the highlight information for, that is, changing the color and contrast of the characters, various menus can be easily created.

[Brief description of the drawings]

FIG. 1 is a block diagram schematically showing an optical disk device according to one embodiment of the present invention.

FIG. 2 is a block diagram illustrating details of a mechanical unit of the disk drive device illustrated in FIG. 1;

FIG. 3 is a perspective view schematically showing a structure of an optical disk loaded in the disk drive device shown in FIG. 1;

FIG. 4 is a diagram illustrating a schematic configuration of a key operation and a display unit illustrated in FIG. 1;

FIG. 5 is a diagram showing a schematic configuration of a remote control shown in FIG. 1;

FIG. 6 shows a structure of a logical format of the optical disc shown in FIG. 3;

FIG. 7 shows the structure of the video manager shown in FIG.

FIG. 8 is an example showing a structure of a video object set (VOBS) shown in FIG. 6;

FIG. 9 is an explanatory diagram showing the structure of the video object unit shown in FIG.

FIG. 10 illustrates parameters and contents of a video manager information management table (VMGI_MAT) in the video manager (VMGI) illustrated in FIG. 7;

FIG. 11 is a title search pointer table (T) in the video manager (VMGI) shown in FIG. 7;
T_SRPT).

FIG. 12 shows parameters and contents of information (TT_SRPTI) of the title search pointer table of the title search pointer table (TT_SRPT) shown in FIG. 11;

FIG. 13 shows parameters and contents of a title search pointer (TT_SRP) corresponding to an input number of the title search pointer table (TT_SRPT) shown in FIG.

FIG. 14 is a video manager menu PGCI unit table (VMGM_PG) shown in FIG. 7;
CI_UT).

FIG. 15 is a video manager menu PGCI unit table information (VMGM) shown in FIG. 14;
_PGCI_UTI).

FIG. 16 is a video manager menu PGCI unit search pointer (VMG) shown in FIG. 14;
M_LU_SRP).

FIG. 17 shows a structure of a video manager menu language unit (VMGM_LU) shown in FIG.

FIG. 18 shows parameters and contents of the video manager menu language unit information (VMGM_LUI) shown in FIG. 17;

FIG. 19 shows a video manager menu PG
C information search point (VMGM_PGCI_SRP)
Are shown below.

FIG. 20 shows the structure of the video title set shown in FIG.

21 shows parameters and contents of a management table (VTSI_MAT) of video title set information of the video title set information (VTSI) shown in FIG. 20.

FIG. 22 is an attribute (VTS_) of the audio stream of the video title set (VTS) shown in FIG. 6;
AST_ATR).

FIG. 23 is an example of a sub-picture stream attribute (VTS_SPS) of the video title set (VTS) shown in FIG. 6;
T_ATR).

FIG. 24 shows a structure of a table (VTS_PGCIT) of video title set program chain information of the video title set (VTS) shown in FIG. 20.

FIG. 25 is a table (VTS_PG) of the video title set program chain information shown in FIG. 24;
CIT) information (VTS_PGCIT_I).

FIG. 26 is a table (VTS_PG) of the video title set program chain information shown in FIG. 24;
3 shows parameters and contents of a search pointer (VTS_PGCIT_SRP) corresponding to a program chain of (CIT).

FIG. 27 is a table (VTS_PG) of the video title set program chain information shown in FIG. 24;
CIT) program chain information (VTS_PG) for a video title set corresponding to the program chain
CI).

FIG. 28 shows parameters and contents of general information (PGC_GI) of a program chain of the program chain information (VTS_PGCI) shown in FIG. 27.

29 shows a structure of a category (PGC_CAT) of a program chain (PGC) of general information (PGC_GI) of the program chain shown in FIG. 28.

FIG. 30 is a diagram (PGC_CN) of general information (PGC_GI) of the program chain shown in FIG. 28;
The structure of T) is shown.

FIG. 31 shows a structure of a program chain map (PGC_PGMAP) of the program chain information (VTS_PGCI) shown in FIG. 27.

FIG. 32 shows parameters and contents of an entry cell number (ECELLN) for a program described in a map (PGC_PGMAP) of the program chain shown in FIG. 27;

FIG. 33 shows a structure of a cell reproduction information table (C_PBIT) of the program chain information (VTS_PGCI) shown in FIG. 27.

FIG. 34 is a diagram illustrating the cell reproduction information (C) shown in FIG. 33;
_PBI).

FIG. 35 is a diagram showing cell position information (C_PO) in the program chain information (VTS_PGCI) shown in FIG. 28;
SI).

FIG. 36 is a diagram showing the cell position information (C) shown in FIG. 35;
_POSI).

FIG. 37 is a video title set menu PGCI unit table (VTSM_P) shown in FIG. 20;
GCI_UT).

FIG. 38 is an example of the video title set menu PGCI unit table information (VTSM shown in FIG. 37);
_PGCI_UTI).

FIG. 39 is a video title set menu PGCI unit search pointer (VTS) shown in FIG. 37;
M_LU_SRP).

FIG. 40 shows a structure of a video title set menu language unit (VTSM_LU) shown in FIG. 37.

FIG. 41 shows parameters and contents of video title set menu language unit information (VTSM_LUI) shown in FIG. 37.

FIG. 42 shows a video title set menu P
GC information search point (VTSM_PGCI_SR
The parameters and contents of P) are shown.

FIG. 43 shows a structure of the navigation pack shown in FIG. 8;

FIG. 44 shows a structure of the video pack, audio pack, or sub-picture pack shown in FIG.

FIG. 45 shows parameters and contents of playback control information (PCI) of the navigation pack shown in FIG. 43.

FIG. 46 shows parameters and contents of general information (PCI_GI) in the reproduction control information (PCI) shown in FIG. 45.

FIG. 47 shows parameters and contents of angle information (NSML_AGLI) in the reproduction control information (PCI) shown in FIG. 45.

FIG. 48 is an explanatory diagram when an angle change is performed using angle information (NSML_AGLI) in the reproduction control information (PCI) shown in FIG. 47;

FIG. 49 is a diagram illustrating a valid period of highlight information for each sub-video stream in a reproduction period of one sub-video unit.

FIG. 50 is a diagram for explaining a video, a sub-picture, highlight information, and a synthesized image obtained by synthesizing them;

FIG. 51 shows parameters and contents of highlight information (HLI) in the reproduction control information (PCI) shown in FIG. 45;

FIG. 52 is an exemplary view for explaining the content of highlight information (HLI) shown in FIG. 51;

FIG. 53 shows parameters and contents of highlight generation information (HL_GI) in the highlight information (HLI) shown in FIG. 51;

FIG. 54 is a button color information table (BTN_COL) in the highlight information (HLI) shown in FIG. 51;
FIG.

FIG. 55 is an illustration of the selection color information (S) shown in FIG. 54;
The figure which shows the description content of (L_COLI) in detail.

FIG. 56 is an illustration of fixed color information (A) shown in FIG. 54;
The figure which shows the description content of (C_COLI) in detail.

FIG. 57 is a view showing a configuration of a button information table (BTNI) in highlight information (HLI) shown in FIG. 51;

FIG. 58 is a diagram illustrating button information (B) shown in FIG. 57;
The figure which shows the description content of the button position information (BTN_POSI) in TNI) in detail.

FIG. 59 shows parameters and contents of the disc search information (DSI) of the navigation pack shown in FIG. 43.

FIG. 60 shows parameters and contents of DSI general information (DSI_GI) of the disc search information (DSI) shown in FIG. 59.

FIG. 61 shows parameters and contents of angle information (SML_AGLI) of disc search information (DSI) shown in FIG. 59.

FIG. 62 is an example of angle information (SML_AGLI) in the disc search information (DSI) shown in FIG. 61;
It is explanatory drawing at the time of performing an angle change using.

FIG. 63 is an example of search information (VOBU_S) of the video object unit (VOBU) shown in FIG. 59;
RI) parameters and their contents.

FIG. 64 is search information (VOBU_S) of the video object unit (VOBU) shown in FIG. 59;
3 shows a bitmap describing a forward address (FWDA) of an RI).

FIG. 65 is an example of search information (VOBU_S) of the video object unit (VOBU) shown in FIG. 59;
3 shows a bitmap describing the backward address (BWDA) of the RI).

FIG. 66 is an example of synchronous reproduction information (SYNC) of the video object unit (VOBU) shown in FIG. 59;
The parameters of I) and their contents are shown.

FIG. 67 shows a configuration of a sub-picture unit.

FIG. 68 shows parameters and contents of a sub-picture unit header (SPUH) of the sub-picture unit shown in FIG. 67.

FIG. 69 shows parameters and contents of a display control sequence table (DCSQT) of the sub-picture unit shown in FIG. 67.

FIG. 70 shows parameters and their contents of a display control sequence (DCSQ) shown in FIG. 69.

FIG. 71 shows a configuration of a packet transfer processing unit.

FIG. 72 shows a configuration of a highlight processing unit.

FIG. 73 is a diagram showing the total number of titles in the optical disc, the number of chapters (the number of programs) for each title, the number of audio streams and the language of the audio stream for each title, the number of sub-video streams and the sub-video for each title; 5 shows a flowchart for detecting a language of a stream.

FIG. 74 shows the total number of titles in the optical disc, the number of chapters (programs) for each title, the number of audio streams for each title and the language of the audio stream, the number of sub-video streams for each title and sub-video 5 shows a flowchart for detecting a language of a stream.

FIG. 75 is a view showing a storage example of a memory table;

FIG. 76 is an exemplary view showing an example of reproduction of an image of a main menu;

FIG. 77 is an exemplary view showing a reproduction example of images of a title menu, a chapter menu, an audio menu, a sub-picture menu, and an angle menu;

FIG. 78 is a flowchart showing a processing procedure when a menu is reproduced.

FIG. 79 is an exemplary view for explaining a video, a sub-picture, highlight information, and a synthesized image obtained by synthesizing them;

[Fig. 80] Fig. 80 is a diagram for describing a video, a sub-picture, highlight information, and a synthesized image obtained by synthesizing them.

FIG. 81 is a view showing pattern pixels and emphasized pixels in sub-image data.

FIG. 82 is a flowchart showing a procedure for reproducing video data in a normal mode on an optical disc having the logical format shown in FIGS. 6 to 66;

FIG. 83 is a flowchart showing a procedure for reproducing video data in a normal mode on an optical disk having the logical format shown in FIGS. 6 to 66;

FIG. 84 is a flowchart showing a procedure for reproducing video data in a normal mode on an optical disc having the logical format shown in FIGS. 6 to 66;

FIG. 85 is a flowchart showing a procedure for changing an angle during reproduction of video data on an optical disk having the logical format shown in FIGS. 6 to 66;

FIG. 86 is a block diagram illustrating an encoder system that generates video files by encoding video data.

FIG. 87 is a flowchart showing an encoding process shown in FIG. 86;

FIG. 88 is a flowchart of creating a video data file by combining main video data, audio data, and sub-video data encoded according to the flow shown in FIG. 87;

FIG. 89 is a block diagram showing a disk formatter system for recording a formatted video file on an optical disk.

FIG. 90 is a flowchart for creating logical data to be recorded on a disk in the disk formatter shown in FIG. 89;

FIG. 91 is a flowchart of creating physical data to be recorded on a disk from logical data.

FIG. 92 is a schematic diagram showing a system for transferring the video title set shown in FIG. 6 via a communication system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 4 ... Key operation / display part 5 ... Remote control 6 ... Monitor part 8 ... Speaker part 10 ... Optical disk 30 ... Disk drive part 50 ... System CPU part 52 ... System ROM & RAM part 56 ... Data RAM part 56A ... Memory table 64 ... D / A and playback processing unit 71 video manager 72, ... video title set 76 video object set of video manager menu 79 title search pointer table 81 video manager menu PGCI unit table 86 NV pack 88 video pack 90 Sub-picture pack 91 Audio pack 94 Video title set information 95 Video object set of video title set menu 96 Video object of title in title set Video set information management table 111 Video title set menu PGCI unit table 113 PCI data 113A Highlight general information 113B Button color information table 113C Button information table 113D to E Button color information 113G to select ... Color information 113H ~ ... Confirmed color information 113I ~ ... Button information 116 ... PCI packet

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinichi Kikuchi 3-3-9 Shimbashi, Minato-ku, Tokyo Inside Toshiba Abu E Co., Ltd. (72) Inventor Kazuhiko Taira 3-3-1 Shimbashi, Minato-ku, Tokyo No. 9 Toshiba Abu E Co., Ltd.

Claims (12)

[Claims] 1. A plurality of data units which are to be played back in time series, each of which is played back within a certain time range, and whose data unit sequence is a packet of playback data including video data and sub-picture data. A recording medium comprising a plurality of data pack sequences, and a control pack arranged at the head of the data pack sequence and describing control data for controlling the reproduction of the reproduced data. Check each,
At least one menu information corresponding to each of the above-mentioned contents used for selection is recorded by the video data and the sub-picture data. The video data constituting the menu information is a background image, and the sub-picture data is a user. A recording medium, which is a selection item, wherein control data for controlling a user selection item composed of the sub-picture data is recorded in the control pack in correspondence with the corresponding video data. 2. The control data for controlling a user selection item includes display color information after selection indicating information such as color and contrast of sub-picture data to be used after the user selection item is selected. 2. The recording medium according to claim 1, further comprising selection item position information indicating a position where the item is to be displayed. 3. A button area surrounding a user selection item represented by the sub-picture data, wherein a pattern pixel as a pixel data, a background pixel,
2. The recording medium according to claim 1, wherein the color and contrast of the emphasized pixel are independently changed by the control data. 4. The recording medium according to claim 1, wherein said sub-picture data is recorded after being run-length compressed. 5. The recording medium according to claim 1, wherein said video data includes compressed video data. 6. The control data for controlling the user selection items includes display color information after selection indicating information such as color and contrast of sub-picture data to be used after the selection of the user selection items; 6. The recording medium according to claim 5, further comprising selection item position information indicating a position where the item is to be displayed. 7. The recording medium according to claim 1, wherein said data pack includes audio data. 8. The control data for controlling the user selection items includes display color information after selection indicating information such as color and contrast of sub-picture data to be used after the selection of the user selection item, and user selection items. 8. The recording medium according to claim 7, further comprising selection item position information indicating a position where the item is to be displayed. 9. A management area is formed in a part of the area, and a data area is formed in another area. The data area has at least one main video data and can be reproduced in the same time zone as the main video data. At least one sub-picture data is recorded, and various contents of the main picture data can be confirmed,
At least one menu information corresponding to each of the contents used for selection is recorded by the main video data and the sub video data. The main video data constituting the menu information is a background image, and the sub video data is Is a user selection item, and control data of the user selection item composed of the sub-video data is recorded in the data area corresponding to the corresponding main video data. 10. The recording medium according to claim 9, wherein at least one audio data that can be reproduced in the same time zone as the main video data is recorded in the data area. 11. The selected control color data is a display color information after selection indicating information such as a color and a contrast of sub-picture data used after a user selection item is selected, and each user selection item is to be displayed. 10. The recording medium according to claim 9, comprising: selection item position information indicating a position. 12. In the data area, main video data and audio data or sub-video data reproducible in the same time zone as the main video data or sub-data and control data are recorded in a plurality of program chains. A program chain is composed of a plurality of programs, one program is composed of a plurality of cells, and one cell is recorded in a hierarchical structure composed of a plurality of packs. Each pack is composed of a main video data pack, an audio data pack, and a sub video data pack. , A control data pack, and in the management area,
Management information for managing a program chain, a program, a cell, and a pack in the data area is recorded, and the menu information is a title menu corresponding to each program chain, a program menu corresponding to each program, and an audio data menu corresponding to audio data. 10. The recording medium according to claim 9, wherein the recording medium is a sub-picture data menu corresponding to sub-picture data.