JP2013115775A - Electronic apparatus and reproduction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic apparatus and a reproduction method which, when reproducing programs recorded simultaneously, starts the reproduction of each program from a reproduction start position determined in consideration of an already reproduced section.SOLUTION: In this embodiment, the electronic apparatus comprises a broadcast receiver, a recorder, and a controller. The broadcast receiver receives broadcast signals of plural channels. The recorder simultaneously records programs of plural channels received by the broadcast receiver. While one of the programs recorded in a recording medium is reproduced, if the channel is switched with a switch signal for switching the channel, the controller detects whether the program to be reproduced as the result of switching is provided or not with an identifier indicating that the program has already been reproduced, and switches the start position of the reproduction of the program.

Description

  Embodiments described herein relate generally to an electronic apparatus and a playback method for simultaneously recording two or more programs and playing back a requested program.

  2. Description of the Related Art As recording capacity of recording devices increases or decreases in price, there are electronic devices that simultaneously receive and record programs of a plurality of channels broadcast simultaneously.

JP 2004-349745 A

  When a program being recorded on another channel is played back while a program of a plurality of channels is being recorded simultaneously from a plurality of broadcast waves, the program is played back from the recording position at the time when the channel switching is instructed.

  For this reason, when a program on another channel different from other channels is temporarily played back, and a program on another channel that has already been partially played back is played again, the program on the other channel is already played back. Plays from a discontinuous position.

  An object of the present invention is to provide an electronic apparatus and a playback method for starting playback of a program from a playback start position in consideration of a section that has already been played back when playing back a recorded program in which a plurality of channels broadcast simultaneously is recorded. Is to provide.

  According to the embodiment, the electronic device includes a broadcast receiving unit, a recording unit, and a control unit. The broadcast receiving unit receives broadcast signals of a plurality of channels. The recording unit simultaneously records programs of a plurality of channels received by the broadcast receiving unit. The control unit detects the presence / absence of an identifier indicating that the program of the channel switched by the switching signal for switching the channel during playback of the program recorded on the recording medium has already been played back. Switch the start position.

Schematic which shows an example of the electronic device (television broadcast receiver) in embodiment. Schematic which shows an example of the controller (remote controller) in embodiment. Schematic which shows an example of the reproducing | regenerating method in embodiment. Schematic which shows an example of the electronic device (television broadcast receiver) in embodiment. Schematic which shows an example of the video recording program information list in embodiment. Schematic which shows an example of the video recording program information list in embodiment. Schematic which shows an example of the display of the past program schedule in embodiment. Schematic which shows an example of the display of the past program schedule in embodiment. Schematic which shows an example of the display of the past program schedule in embodiment. Schematic which shows an example of the display of the past program schedule in embodiment. Schematic which shows an example of the display of the past program schedule in embodiment. Schematic which shows an example of the display setting method of the past program guide in embodiment. Schematic which shows an example of the display setting method of the past program guide in embodiment. Schematic which shows an example of the electronic device (recording / reproducing apparatus) in embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 schematically shows the configuration of an electronic apparatus (television broadcast receiver, hereinafter abbreviated as a television receiver) to which the present invention is applied. In the embodiment, a television receiver is described as an example of the electronic apparatus of the present invention, but the present invention is not limited to this. That is, any device provided with a broadcast receiving device such as a broadcast receiving device, a mobile phone with a broadcast receiving function, a personal computer with a broadcast receiving function, and a video recording device equipped with the broadcast receiving device may be used. The broadcast is not limited to receiving radio waves propagating in the air, but may be broadcast capable of receiving a program distributed from a broadcasting station via a network such as a cable or an IP (Internet Protocol) network. The program is also referred to as content (stream), and includes video and audio or music. In addition, the video includes moving images and still images, or text broadcasting and data broadcasting mainly including text.

  A television receiver 101 shown in FIG. 1 includes at least a broadcast receiving unit 1, a recording medium 2, a recording / playback control unit 3, a recorded program information storage unit (recorded program information table) 4, and a main control unit 5. The broadcast receiver 1 is connected to the antenna ANT, and the recording / playback controller 3 is connected to the speaker 9 and the display 10.

  A plurality of channels of digital broadcast signals (broadcast waves) received via the antenna ANT are separated and demodulated as broadcast signals for each channel in the broadcast receiver 1.

  The program included in the broadcast signal of each channel demodulated by the broadcast receiving unit 1 is recorded in a predetermined format on the recording medium 2 (the recording medium 2 holds the program).

  The recording / reproducing control unit 3 analyzes the broadcast signal from the broadcast receiving unit 1 and records it on the recording medium 2 for each program, and the physical address for starting the reproduction of the recorded program is designated from the outside (for example, by the user). Thus, it has a function of starting playback of the corresponding program.

  The recorded program information table 4 holds the broadcast time of the recorded program table, the top physical address of the program recorded on the recording medium 2, and the physical address of the last position when the user reproduces the program. The physical address for starting playback of the recorded program is arbitrarily designated by a user operation (control input) using the channel switching device (for example, remote control device / remote controller) 50.

  The channel switching device 50 will be described with reference to FIG.

  The channel switching device 50 includes, for example, a direct channel instruction key 51 that outputs numerical data or a control signal corresponding to a reception channel, and an up / down switching key 52 that outputs numerical data or a control signal corresponding to a channel in an up / down manner. Including at least.

  FIG. 3 illustrates the embodiment in software.

  When playing back a recorded program that simultaneously records multiple channels of programs that are being broadcast simultaneously, the channel is switched using the direct channel instruction key or channel up / down key of the channel switching device during playback of the program recorded on the recording medium. [20], the playback position at the time when the switching request is received is added to the broadcast start time of the program being played back (that is, the program being viewed when receiving the channel switching instruction). The viewing time (which may be referred to as an identifier / resume point that indicates that playback has already been performed in the past (eg, playback end time, etc.) is calculated [21].

  For the channel for which the switching instruction has been received, a program including the past viewing time is searched from the recorded program information table [22].

  When a program including the past viewing time is found from the recorded program information table for the channel for which the switching instruction has been received [22-YES], the recording as shown in FIG. 5 in the recorded program information table described below with reference to FIG. The program detailed information is searched, and whether or not a resume point (an identifier indicating that the program has been played (in the past), such as a playback end time) is recorded (no record) The case is set to “0”) [23].

  When the resume point is recorded [23-YES], the resume point of the program held in the recording medium 2 is designated, and the reproduction of the program is started [24].

  When the resume point is not recorded (the recorded value is “0”) [23-NO], the head position (recording start time) of the program held by the recording medium 2 is designated, and the program Playback is started [25].

  When a program including the past viewing time is not found from the recorded program information table for the channel for which the switching instruction has been received [22-NO], for example, an error message “No corresponding program” is displayed [26].

  FIG. 4 shows an example of the recorded program information (information stored in association with the time zone of the program recorded in each channel) held in the recorded program information table (recorded program information holding unit) described above with reference to FIG. Show.

  The recorded program information shown in FIG. 4 indicates program information recorded in an arbitrary time zone for each channel (broadcast wave). For example, between 17:00 and 18:00 on August 22, 2011, the channel CH1 It can be seen that the program indicated by [001-0002] is recorded. [001-0002] is a sequence number assigned to the recorded program by the system (recording / playback control unit 3 and main control unit 5) (a serial number that does not overlap).

  Further, the sequence number corresponds to the length (time length) of the program, and may cross a plurality of time zones as [003-0002] in CH3. For example, the same sequence number [003] is used between CH 3 August 23, 2011 17: 00 to 18:00 (time zone) and August 22, 2011 18: 00 to 19:00 (time zone). -0002].

  FIG. 5 shows detailed recording information (for example, [recording start time], [recording end time], [physical address] for any one channel) held in the recorded program information table (recorded program information holding unit) described above with reference to FIG. , [Resume Point] and other (management) items are examples of recorded program information associated with time zones).

  The detailed recording information shown in FIG. 5 includes, for each program divided by the sequence number shown in FIG. 4, a broadcast start and end time of the program, a physical address indicating the head of the program recorded on the recording medium 2, and the like. . Note that a program that has been partially reproduced in the past includes a [resume point] that indicates an arbitrary position (time reference or data size reference in the recording medium) in the physical address.

  From FIG. 5, it can be seen that [001-0002] in CH1 has a broadcast time of 17:10 to 17:55 on August 22, 2011, and the physical address is, for example, [0x000000020]. Note that the [filled] resume point is a record of the physical address of the last position (time length) in the latest playback when the user has played the program. In addition, when the initial value of [FILD] is set to “0” and the [FILED] of the resume point is “0”, the corresponding program has not been played or has been played to the end point, and the next playback is not performed. Indicates that playback starts from the beginning.

  FIG. 6 shows an example of a more specific embodiment of the television receiver (electronic device) shown in FIG.

  6 includes an input terminal 12, a tuner 13, a TS (Transport Stream) processing unit 111, a signal processing unit 112, a graphic processing unit 113, which receives a broadcast wave received by the antenna 11. OSD (On Screen Display) signal generation unit 114, audio processing unit 115, video processing unit 116, HDD (Hard Disk Drive) 117, control unit 118, operation unit 123, reception unit 124, first card I / F (Interface) 125, first card holder 126, second card I / F (interface) 128, second card holder 129, brightness sensor 131, communication I / F (interface) 132, LAN Terminal 133, USB I / F (interface) 134, USB terminal 135, i. LINKI / F (interface) 136, i. A LINK terminal 137, an HDMII / F (interface) 138, an HDMI terminal 139, a video display unit (display) 110, and a speaker (audio reproduction unit) 109 are provided.

  The control unit 118 includes a ROM (Read Only Memory) 119, a RAM (Random Access Memory) 120, a nonvolatile memory 121, and a recording / playback control unit 122 (corresponding to the recording / playback control unit 3 in FIG. 1). ), A channel switching control unit 140, and a CPU (Central Processing Unit, main control device).

  The antenna 11 can receive terrestrial digital broadcast, BS digital broadcast, CS digital broadcast, and the like as broadcast formats. The input terminal 12 inputs broadcast signals received by the antenna 11 to a plurality of tuners 13. The tuner 13 selects a broadcast signal of a desired channel from among three types of terrestrial digital broadcast, BS digital broadcast, and CS digital broadcast by a control signal from the control unit 118, and demodulates the selected broadcast signal. (In the case of terrestrial digital broadcasting, OFDM (Orthogonal Frequency Division Multiplexing) demodulation, and in the case of BS digital broadcasting and CS digital broadcasting, PSK (Phase Shift Keying) demodulation), a TS including a desired program is obtained. The demodulated broadcast signal is input to the TS processing unit 111.

  A plurality of tuners 13 are provided. The tuners 13A, 13B, and 13C are labeled according to the broadcast wave to be received, and these are simply referred to as the tuner 13 when there is no need to distinguish them. In the television receiver 101 described in FIG. 6, the tuner 13A is for viewing, and the tuners 13B and 13C are for recording.

  The TS processing unit 111 receives the TS of the selected channel from the tuner 13, re-multiplexes the plurality of TSs into one TS, and outputs it to the signal processing unit 112.

  Further, when recording, the TS processing unit 111 receives a plurality of TSs selected by the tuners 13B and 13C from the tuner 13, re-multiplexes the plurality of TSs into one TS, and the signal processing unit 112. Output to.

  The signal processing unit 112 performs predetermined digital signal processing on the TS on which a plurality of channels output from the TS processing unit 111 are multiplexed. The TS subjected to the digital signal processing is separated into a data signal, a video signal, and an audio signal. The separated video signal is output to the graphic processing unit 113, the audio signal is output to the audio processing unit 115, and the data signal is output to the OSD signal generation unit 114 or the control unit 118. Also, the TS re-multiplexed by the TS processing unit 111 for recording is output to the control unit 118.

  The above-described data signal includes various information related to the broadcast program. There is time information as information about the program. In Japan's terrestrial digital broadcasting, ARIB STD-B10, the standard of the Radio Industries Association (ARIB), has a time and date table (TDT: Time and Date Table) A time date offset table (TOT: Time Offset Table) including offset time information is defined, and these tables indicate the current time in Japan Standard Time (JST = Coordinated Universal Time (UTC) +9) and Modified Julian Date (MJD). The date and current time are transmitted.

  In the television receiver 101 shown in FIG. 6, a time date offset table (TOT) is used as the current date and the current time. In ARIB TR-B14, which defines the operational rules for digital terrestrial broadcasting in Japan, 5 seconds is defined as the default period for transmitting the time-date offset table (TOT), and TOT is transmitted once every 5 seconds. Is done.

  In addition, information relating to programs included in the data signal includes EPG (Electric Program Guide) information. The EPG information includes channel information, channel number, program name, schedule, and the like. In this embodiment, the EPG information is used to generate a program guide for programs from the present to one week ahead and a past program guide for recorded programs.

  The graphic processing unit 113 decodes the digital video signal output from the signal processing unit 112. The decoded video signal is combined with the OSD signal output from the OSD signal generation unit 114 to be combined and output to the video processing unit 116. The graphic processing unit 113 selectively outputs the decoded video signal or OSD signal to the video processing unit 116.

  The OSD signal generation unit 114 generates an OSD signal for displaying a UI (user interface) screen and the like under the control of the control unit 118. Note that the data signal separated from the digital broadcast signal in the signal processing unit 112 described above is converted into an OSD signal of a predetermined format by the OSD signal generation unit 114 and output to the graphic processing unit 113.

  The audio processing unit 115 converts the audio signal input from the signal processing unit 112 into an analog audio signal in a format that can be reproduced by the speaker 109. The audio signal converted into analog is output to the speaker 109 and reproduced.

  The video processing unit 116 converts the signal output from the graphic processing unit 113 into a video signal in a format that can be displayed by the video display unit 110, and supplies the video signal to the video display unit 110.

  The HDD 117 stores a TS for each channel based on control by the recording / playback control unit 122.

  The control unit 118 receives the operation signal input from the operation unit 123 and the operation signal transmitted from the remote controller 150 and received through the reception unit 124 and recorded in advance in the ROM 119 and various processing programs. Start up.

  The control unit 18 also controls the operation of each unit of the apparatus using the RAM (SDRAM) 120 as a work memory according to the started program.

  The ROM 119 stores a system control program and various processing programs executed by the CPU. The RAM 120 is a working memory for the CPU to develop various programs. The nonvolatile memory 121 stores various setting information, control information, and the like necessary for operation control of each unit. In the present embodiment, it is assumed that the channel information of a broadcast that was viewed immediately before playing a recorded program is stored.

  The recording / playback control unit 122 controls the function of recording a program of any (plurality) of channels in the television receiver 101 and playing back the recorded program (recorded in the HDD). In other words, the recording / playback control unit 122 returns the TS multiplexed with the broadcast progress of the plurality of channels output from the TS processing unit 111 to the TS for each channel, and records it in a predetermined format according to the physical address of the HDD 117.

  The recording / playback control unit 122 executes control for playing back the recorded data, reads out and plays the TS for each channel stored in the HDD 117, displays the TS on the video display unit 110, and / or plays audio from the speaker 109. (And audio) output. Also, through the LAN terminal 133 as a LAN-compatible HDD dedicated port, the program information is recorded on the HDD 117 with high-definition image quality in accordance with predetermined protection information without being affected by other network environments or network usage conditions.

  7 and 8 described with reference to FIGS. 1 to 6 “Recording a program of a plurality of channels and holding it for a certain period of time, so that a program that has already been broadcast can be designated in the same way as a normal program. An example of displaying the degree of reproduction of a recorded program that has already been reproduced in a past program table that displays a list of recorded programs in a television receiver that can be reproduced by (selection) is shown.

  For example, as described with reference to FIG. 3, when a channel switching instruction is received while viewing a program, a program in another channel (channel designated by the channel switching instruction) recorded at the same time as the program being viewed Playback of the program of the channel is started from the resume point. As shown in FIG. 7, for a program that has been replayed in the past until the resume point, that is, halfway (resume point), for example, the background color is changed to indicate that the program has been replayed in the past. Also, as shown in FIG. 8, programs that have been played back halfway (resume point) may be displayed by changing the color of the title.

  9 and 10 show another display example of the resume point described with reference to FIGS.

  The example shown in FIG. 9 shows that a program that has been played in the past up to the resume point (halfway) has been played in the past by displaying, for example, an icon or a symbol at an arbitrary position in the display column. Display that there is. Note that the time (elapsed time) that has already been reproduced may be displayed by, for example, an enclosed number ([numerical string]). For example, if the program has already been played for 45 minutes from the beginning (start time) of the program, the display [45] can be displayed.

  In the example shown in FIG. 10, for a program that has been played in the past up to the resume point (halfway), a program that has been played halfway using, for example, an arrow or a bar graph-like display at an arbitrary position in the display column. Is displayed. It should be noted that the length of the arrow or bar graph may be approximately proportional to the length of the program that has already been played, and the length of time that has already been played may be displayed visually. In addition, the final viewing time (viewing end time within the program time length), that is, resume, at a predetermined position on the tip of the arrow or bar graph (when the start time is referred to as the start (end), the end (end) side). It is also possible to display points in time.

  As shown in FIG. 9 and FIG. 10, the resume point is displayed as the time when playback has ended in the past, so that the user can be notified of the approximate remaining time of the program.

  FIG. 11 is a display example of the resume point described with reference to FIGS. 7 to 10, in which at least one of the channel and the time zone is displayed in a continuous bar shape for a program that has already been reproduced.

  Note that, by using the display method shown in FIG. 11, it is possible to easily determine how much of the already recorded program is viewed (how many programs are to be viewed).

  Subsequently, the “multi-channel program is recorded and held for a certain period of time as described with reference to FIGS. 1 to 6, so that a program that has already been broadcast can be designated (selected) in the same way as a normal program. For example, when a channel switching instruction is input while watching the program described with reference to FIG. 3 in the TV receiver that can be played back, the playback method of the program that has been played in the past, that is, the setting (selection) ).

The playback method has already been described with reference to FIGS.
A) The channel is changed while maintaining the current time when the program is being viewed (reproduction is started from the resume point (identifier) of the program of another designated channel recorded at the same time as the program being viewed).
B) A program whose start time is closest to the current time when the program is being viewed is reproduced from the resume point (identifier) (the program whose start time is closest to the program being viewed). Play from resume point (identifier)
C) Playback starts from the resume point (last watched position (time)) held for each channel
Etc.

  Hereinafter, a screen display example of a setting screen that allows the user to set the reproduction method will be described with reference to FIGS. 12 and 13.

  12 displays a menu screen 1211 on the display screen 1201 by a user operation (control input) by the channel switching device 50 shown in FIG. 2, and a setting menu (for example, “time shift setting” by an operation input by the switching device 50. ") By selecting 1212 and determining the input, any of the playback methods shown in A) to C) can be selected when the above-mentioned" channel switching instruction is input while watching the program " The “resume playback” setting menu 1222 is displayed.

  Hereinafter, the user selects a menu corresponding to any one of the above-described A) to C), and determines an input (inputs a control signal for confirming an operation input by the switching device 50). Is set.

  FIG. 13 shows another example of the setting method described with reference to FIG. 1212. The quick menu screen 1311 is displayed on the display screen 1301 by a user operation (control input) by the channel switching device 50, and the operation input by the switching device 50 is performed. By selecting the “resume playback” display 1312 and determining the control input, a “resume playback” setting menu 1322 is displayed in which one of the playback methods shown in A) to C) can be selected.

  Hereinafter, the user selects the resume playback menu corresponding to any of the above-described A) to C), and determines the input to set the selected menu.

  FIG. 14 shows an example of an embodiment of a recording / playback apparatus (recorder apparatus) that functions substantially the same as the television receiver shown in FIG.

  The recorder device (recording / reproducing device) 201 is a recorder device incorporating a recording medium of a predetermined capacity. For example, a distribution company (cable television business entity) that distributes a program by terrestrial digital broadcasting, satellite digital broadcasting, and a wired system. Etc. (hereinafter referred to as CAS (Conditional Access System)) and receiving playback contents and outputting playback signals, and for the contents (streams) desired by the user, the image quality desired by the user And recording by sound quality.

  In the recorder device 201, the reception processing module 211 and the reception processing module 211 receive signals input from an arbitrary number of inputs 211a, 211b,..., 211n-1, 211n (n is a positive integer). A CAS control module 212 that selects a CAS card (an identification mechanism in which an ID (identification code) for user identification) is recorded based on identification information prepared by a content supplier, and received content Control the signal selection module 213, the decoding module 214, and the A / V (Audio / Video) output module 215 for outputting signals as signals that can be displayed by the display device, and managing the transfer of signals between the modules. A main control module 216 is included. The recorder device 201 further includes a recording / playback control module 217 for recording the received content in accordance with a user request. As in the television receiver 101 described with reference to FIG. 1, the element referred to as “module” below may be realized by hardware, or may be realized by software using a CPU (microcomputer) or the like. It may be realized.

  The reception processing module 211 is selected by a tuner module and a tuner module that select (tune) a predetermined channel from an input signal for each of 211a, 211b,..., 211n-1, 211n (n is a positive integer). The TS separation module and the TS separation module for separating the transport information (TS) including the content and the management information including the information of the content supplier, that is, the CAS business entity and the contract information prepared by the CAS, from the broadcast signal are separated. Using the identification information (CAS card) provided by CAS by the CAS control module described below, the encryption key (key) applied on the CAS side is released (descrambled) from the management information, and the video signal of the content And descrambler module for obtaining audio signals (PES (Packetized Elementary Stream)) Including

  The CAS control module 212 reads the ID from the identification card (CAS card) 127 (130) holding the identification code (ID) based on the content supplier, that is, the contract information prepared by the CAS, and receives (views) the content by the user. Allow. A plurality of types of CAS cards 130 (127) are prepared based on the business form of the supplier or the distributor. Note that the CAS control module 212 can accommodate, for example, two CAS cards 127 (130).

  As is well known, the CAS card conforms to “ARIB TR-B15” managed by the “Radio Industry Association (ARIB)” and can stream two streams with one card (cancellation of encryption key). It is. Accordingly, since the CAS control module 212 can insert two CAS cards, it can receive a maximum of four streams (channels). The CAS card is also called a B-CAS card, and is divided into a first standard card called a blue card and a second standard card called a red card.

  The first standard card (blue card) has an ID (identification code) that can be descrambled only for digital terrestrial broadcast streams for which all content is currently free (no charge for viewing, ie no charge) Card.

  The card of the second standard (red card) is a card that holds an ID (identification code) that can be descrambled even for paid (requesting (charging) consideration for viewing) broadcasting, and is a stream of digital terrestrial broadcasting In addition, for example, a CS digital broadcast or a stream (content) supplied by a distribution company via an optical fiber network can be received. Note that the second standard card (red card) can receive streams (contents) provided by all current business entities (the red card is not restricted by the business entities to be received).

  The signal selection module 213 is not described in detail because its main configuration and functions are widely known, but each signal supplied from the reception processing module 211 or the recording / reproduction control module 217 is defined for each signal. In accordance with the processing method, the subsequent decoding module 214 performs processing so that it can be decoded.

  When the signal output from the receiving module 211 is a satellite broadcasting, that is, a satellite digital broadcasting signal provided by a BS (Broadcasting Satellite) or a CS (Communication Satellite), the channel selected by the tuner module The content is demodulated by the PSK demodulation module, and after the transport stream (TS) is extracted, the content is decoded (depacketed) by the TS decoding module. Thereby, a digital video signal and audio (audio) signal (PES) of the selected content are obtained.

  When the signal output from the reception module 211 is a terrestrial digital broadcast signal, the content of the channel selected by the tuner module is demodulated by the OFDM demodulation module, and the transport stream (TS) is extracted. It is processed in the same way as a broadcast signal.

  When the signal output from the reception module 211 is a terrestrial analog broadcast signal, the content of the selected channel is demodulated into an analog video signal and audio signal (audio) by the analog demodulation module.

  The signal output from the recording / playback control module 217, which will be described later, is usually compressed based on the MPEG-2 or -4 (H.264-AVC) standard (audio / audio is MPEG-2). This signal is output to the subsequent decoding module 214 as it is.

  The decoding module 214 is well known for its main configuration and its functions, and will not be described in detail. However, the decoding module 214 decodes the PES output from the signal selection module 213, and selects the video signal and audio (audio) of the selected content. ) Output the signal. Although not shown, the video signal and the audio (sound) signal are converted into an analog signal by a D / A converter and supplied to the A / V output module 215 at the subsequent stage. Note that section information, various data (service information), electronic program guide (EPG) information, program attribute information (program genre, etc.), subtitle information, and the like included in the TS are also extracted from the decoded signal. Also, when an analog video signal and audio (audio) signal are supplied from the signal selection module 213, the decode module 214 outputs the analog video signal and audio (audio) signal to the A / V output module 215 at the subsequent stage as they are. The decode module 214 decodes the compressed signal from the recording / playback control module 217 by a decoder (corresponding to the compression method), converts it to an analog signal by a D / A converter (not shown), Output to the / V output module 215.

  The A / V output module 215 generates a video output that can be displayed (reproduced) by a monitor device (display) connected to the outside although the detailed description is omitted because the main configuration and its functions are widely known. And an audio (audio) reproducing device connected to the outside, that is, an audio processing module for outputting audio output (including audio) that can be reproduced by a speaker or headphones. The video output is generated when the digital video signal supplied from the decoding module 214 and the OSD signal generated by the OSD signal generation module, such as an operation guide or an error message, and data broadcasting, are used. The image (text) data and the EPG data or subtitle signal acquired from the TS are combined and output to the video output 218. As for audio output, guidance (voice guide) prepared in advance is superimposed as appropriate and output to the audio output 219 as necessary. Needless to say, when a display device and a speaker such as a television receiver are provided integrally, the outputs of the video processing module and the audio processing module are supplied as they are.

  Since the main control module 216 is widely known in main configuration and functions, detailed description thereof is omitted except for a part thereof. However, the program database processing module 216A, the viewing control module 216B, the memory module 216C, and the display control module are omitted. 216D and MPU (microprocessor or core processor) 216E are included at least.

  The program database processing module 216A is used for functions such as displaying an EPG and accepting a recording reservation in accordance with content information acquired by the EPG.

  The viewing control module 216B receives content (selection of channel or CAS entity) by an arbitrary tuner according to an ID (identification code) held by the CAS card, obtains management information (CAS entity information) included in the content, etc. Used for

  The memory module 216C includes a ROM, a RAM, and a nonvolatile memory that stores and holds various setting information and control information. The RAM also holds the acquired EPG data. The non-volatile memory (NVM) holds reservation information for realizing a recording reservation, channel (CAS) information that has been viewed or recorded immediately before, and the like.

  The display control module 216D controls generation of an OSD signal to be output to the A / V output module 215 and image display (icon display or various displays to be displayed on the GUI) displayed as an operation guide.

  The main control module 216 controls each of the reception processing module 1, the CAS control module 212, the signal selection module 213, the decoding module 214, and the A / V output module 215, and manages the signal transfer between the modules.

  Further, the main control module 216 has operation contents corresponding to remote control input received by a remote control receiving module (not shown), which is operation information input from an operating module (not shown) or operation information sent from a remote control (remote terminal) (not shown). As reflected, each module described above is controlled, and the activation program is executed in accordance with the program held in the ROM included in the memory module 216C, and a standby state for the next input or recording reservation is set.

  The main control module 216 will be described later on the basis of a control program stored in the ROM. The recording medium included in the recording / playback control module 217 detects a defect location, detects an unrecorded area, and records recording information. Setting, UDF recording, A / V address setting, etc. are executed. Although not described in detail, the main control module 216 includes a directory detection unit, a VMG (video management information) creation unit, a copy related information detection unit, a copy and scrambling information processing unit (RDI processing unit), a packet header processing unit, As a sequence header processing unit, an aspect ratio information processing unit, an editing time management information control unit for processing management information at the time of editing, a recording time management information control unit for processing management information at the time of recording, etc. Various signal processing blocks for realizing a predetermined operation or process are included.

  The main control module 6 also holds information such as [start date / time], [end date / time], [channel] and [rate] regarding the set “reserved recording” to realize the set reserved recording.

  The main control module 216 also controls changes in the contents to be recorded in the arbitrary number, for example, four sets of HDDs 217A to 217D, and the recording method (use for each recording module) included in the recording control module 217.

  The main control module 216 also obtains section information, various data (service information), electronic program guide (EPG) information, program attribute information (program genre, etc.) and subtitle information included in the TS from the decoded signal. To do.

  The recording / playback control module 217 includes an HDD (recording module) capable of recording content for about a hundred hours, depending on the recording mode (rate), and includes received content or input information (video and audio or still images). Image). Note that two or more sets of recording modules (HDD) may be prepared, and in the example shown in FIG. 14, there are four sets (7A to 7D). Further, when a plurality of recording modules are prepared, each may be the same or may be different. Needless to say, the recording module may be, for example, a semiconductor memory (memory card) or a combination of both.

  Note that the recording modules 217A to 217D indicate that the user can record the program recording date, program start time, program end time, presence / absence of repetition every week / daily, and the channel on which the program is broadcast (CAS entity). ), Recording conditions that specify the recording conditions such as the rate and recording destination for each program to be recorded, and a group used for PVR (Personal Video Recording, the first recording method) and a program specific Priority is given to the operation mode set by the user compared to the broadcast time (start time, end time and recording date), etc., and the group used for loop recording (second recording method) in which recording is repeated under certain conditions. (Normally, the recording capacity ratio is approximately 1: 1). Thus, for example, recording modules 217A and 217B are allocated for PVR and recording modules 7C and 7D are allocated for loop recording. Note that the PVR is suitable for recording video and the like for the purpose of permanent storage.

  More specifically, the first recording method is a program of an arbitrary channel or input by a recording start instruction by a user, for example, a recording start button (not shown) or a recording start signal input from the switching device 50 (see FIG. 2). And recording a program of an arbitrary channel or input according to a specified start time and end time. When recording is started by a recording start button or a recording start signal from the switching device 50, the recording continues until, for example, a recording stop (end) button or a recording stop (end) signal from the switching device 50 is input. Is done. It is also possible to use a control that automatically stops recording when a certain time, for example, 6 hours elapses.

  More specifically, the second recording method is a recording method in which a program corresponding to one or more channel signals is recorded in a loop in a set recording time zone. For example, the recording modules 217C and 217D described above may have arbitrary channels. In this recording method, when the remaining recording capacity of the recording area is exhausted and the remaining recording capacity of the recording area runs out, the oldest program among the recorded programs is deleted in order (successively) and overwritten. That is, the second recording method is based on a predetermined condition such as channels (CAS entities) A to D for a program having a predetermined period and a predetermined number of channels according to the set operation conditions, for example, from 10 am to noon every day. When the above channels are designated, the programs of the respective channels are recorded simultaneously (in parallel), and when the number of designated channels is 1, the remaining recording capacity of the programs of the channels is lost. In this case, recording is repeated while overwriting sequentially. In each recording module, the recording area may be virtually divided (divided) in advance according to the number of channels to be recorded. At this time, the recording area may be divided into 1/4 or 1/2 based on the recording capacity.

  Further, for example, a recording module in a program and loop recording (recording method for recording digital broadcast signals of a plurality of channels for each channel and holding the data for a predetermined time) recorded in the recording modules 217A and 217B allocated to the PVR If the programs recorded in 217C and 217D overlap, the program desired by the user can be surely stored in the PVR even if the program recorded in the loop recording is deleted by updating by executing both simultaneously. Remains. In the case of duplication, PVR recording can be stopped and the program recorded in the loop recording can be converted to PVR.

  Thus, by applying the embodiment, when playing a recorded program in which a program of a plurality of channels being broadcast at the same time is recorded, the program is played back from the playback start position in consideration of the already played back section. Can start. In addition, a playback start method that takes into account the already played back section can be selected and set by the user, which improves user convenience.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Broadcast receiving part, 2 ... Recording medium, 3 ... Recording / reproducing control part, 4 ... Recorded program information storage part (recorded program information table), 5 ... Main control part, 9 ... Speaker, 10 ... Display, 11 ... Antenna, DESCRIPTION OF SYMBOLS 12 ... Input terminal, 13 ... Tuner, 101 ... Television broadcast receiver, 109 ... Speaker, 110 ... Video display part, 111 ... TS processing part, 112 ... Signal processing part, 113 ... Graphic processing part, 114 ... OSD signal generation 115: Audio processing unit, 116 ... Video processing unit, 117 ... HDD, 118 ... Control unit, 119 ... ROM, 120 ... RAM, 121 ... Non-volatile memory, 122 ... Recording / playback control unit, 123 ... Operation unit, 124 ... Receiving unit, 125 ... first card I / F, 126 ... first card holder, 127 ... first card, 128 ... second card I / F, 129 ... second card Dohoruda, 130 ... second card, 131 ... brightness sensor, 132 ... communication I / F, 133 ... LAN terminal, 134 ... USB ... I / F, 135 ... USB terminal, 136 ... i. LINK ... I / F, 137 ... i. LINK terminal, 138... HDMI, I / F, 139, HDMI terminal, 140, channel switching control unit, 150, remote controller, 201, recording / playback device, 211, reception processing module, 212, CAS control module, 213, signal selection Module 214, Decode module, 215 ... A (Audio) / V (Video) output module, 216 ... Main control module, 217 ... Recording / playback control module, 217A-217D ... Recording module (HDD), 218 ... Video output, 219 ... Audio (voice) output.

Claims (6)

A broadcast receiver for receiving broadcast signals of a plurality of channels;
A recording unit for simultaneously recording programs of a plurality of channels received by the broadcast receiving unit;
The program playback start position is switched by detecting the presence / absence of an identifier indicating that the program has been played back in the channel switched by the switching signal for switching the channel during playback of the program recorded on the recording medium. A control unit;
An electronic device comprising:   When the identifier is included in the program recorded on the recording medium, the control unit reproduces the program from a position defined by the identifier of the program, and when there is no identifier, reproduces from the head of the program. The electronic device according to claim 1.   The electronic device according to claim 1, further comprising a display unit that displays a reproduced program. During playback of a program that has already been recorded on multiple channels, it accepts instructions to switch channels,
If there is an identifier in the program for the indicated channel indicating that it has already been played,
A reproduction method for switching a reproduction start position of an instructed program according to an identifier.   The program is reproduced from a position defined by the identifier of the program when the program of the channel designated by the switching signal includes the identifier, and is reproduced from the head of the program when there is no identifier. How to play. A broadcast receiver for receiving broadcast signals of a plurality of channels;
A recording unit for simultaneously recording programs of a plurality of channels received by the broadcast receiving unit;
The program playback start position is switched by detecting the presence / absence of an identifier indicating that the program has been played back in the channel switched by the switching signal for switching the channel during playback of the program recorded on the recording medium. A control unit;
A display unit for displaying a program to be reproduced by the control unit;
A display device comprising:

Images