JP3384416B2 - Playback editing device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium, such as a disk or a tape, in which reproduction data such as music information and image information is recorded in a state of being divided into a plurality of files. The present invention relates to a reproducing / editing apparatus that reproduces and edits, in an arbitrary order, data in units of files with respect to data in which code data indicating each file number and time data are recorded along with the reproduction data. 2. Description of the Related Art Playback data recorded on a recording medium such as a disk or a tape includes music information, image information, text data, and the like. It is divided into files of a certain length depending on the contents, regardless of the contents. For example, music information is filed for each song or section. The reproduction data includes code data in which a number is attached to each file called address data accompanying the original information signal, time data for indicating the reproduction position in detail, and the like. By recording such address data, the reproducing apparatus can easily know the exact reproduction position of the file of the data being reproduced, and can search for an arbitrary file in a short time. Therefore, it is possible to relatively easily select and reproduce only a desired file. Editing from a randomly accessible recording medium such as a compact disk having the above functions to a recording medium such as a cassette tape or digital audio tape which cannot be accessed randomly and can only be continuously recorded. Had various inventions. (For example, JP-A-64-88982, JP-B-2-43)
[0004] The gist of the conventional invention is as follows.
Data such as music is selectively reproduced on a continuous recording medium such as a cassette tape so that the recording is performed with the medium filled with no gaps or the entire recording time indicated on the cassette tape. However, a cassette tape has a surface B opposite to the surface A. Normally, recording is performed on the surface B after recording the surface A completely, but when reproducing this, from the surface A to the surface B and from the surface B A
When the reproduction is performed on the surface, if the recording end of the entire surface A and the recording start end of the entire surface B and the recording end of the entire surface B and the recording start end of the entire surface A do not substantially match each other, when switching between AB is performed. Thus, a long blank area is reproduced for cueing. There is no invention in which the reproduction of the blank area not recorded is considered as little as possible. The present invention has been made in order to solve such a problem, and it has been made possible to randomly access each piece of information called address data along with an original information signal like a recording medium such as a compact disk. From a storage medium with storage position and time data to AB
When reproducing, editing, and recording on a continuous recording medium having two recording tracks, the end point of file recording on any A side (end point of music)
It is another object of the present invention to provide an apparatus for recording the start point (start point of music) of file recording on the B side including the blanking area as small as possible. [0005] As means for solving the above problems, the present invention provides a method for reproducing data of a plurality of files, each file number of the data for reproduction, and a file for each file number. In a reproduction / editing apparatus capable of selectively reproducing reproduction data in file units from a recording medium on which recording time has been recorded, the file numbers are rearranged in ascending order of the file recording time. Separating means for dividing into two even-numbered groups, odd-group reproducing output means for reproducing the odd-group file data by the separating means in ascending order of recording time; Playback start receiving means for receiving the file playback start of the odd group and the even group, If the number of files is different, playback is paused for the time corresponding to the last file data time length of the odd group, and if the number of files in the odd group and the even group is the same, the pause is not performed. An even-group reproduction output means for reproducing the file in ascending order of the data time length, and at the same time, after reproducing one file, suspending the reproduction by the difference between the time length of the data of the odd-numbered group and the file of the same rank in the time length. It is characterized by having. According to the present invention, a reproduction / editing apparatus comprising a recording medium in which reproduction data of a plurality of files, each file number of the reproduction data, and a file recording time for each file number are recorded. AB2 like cassette tape
When reproducing, editing, and recording on a continuous recording medium having a recording track of one side, the file numbers are rearranged in the order of longest recording time by the separating means, separated into two groups, odd-numbered and even-numbered, in that order. By output means,
Recording is performed on the cassette tape A in ascending order of the recording time, and after the recording is completed, the reproduction is stopped by the reproduction start accepting means, so that the cassette tape recording is switched to the surface B of the reverse recording track at that position. When the start is instructed and the number of files is the same in the odd group and the even group by the even group reproduction output means, recording is performed in ascending order of recording time. That is, the files of the even-numbered groups are respectively recorded in the recording area of the track B on the position corresponding to the file recording area of the odd-numbered group recorded on the track A. If the number of files in the odd group is one more than the number in the even group,
The reproduction is temporarily stopped for the last file data time length of the odd group, and thereafter the even group is recorded by the even group reproduction output means. An embodiment of the reproducing / editing apparatus of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of a compact disc editing / playback apparatus. In FIG. 1, information recorded on a CD 2 driven to rotate by a spindle motor 3 is read by an optical pickup 4. The pickup 4 contains a laser diode, an objective lens, a focus actuator, a tracking actuator, a photodetector, and the like. The output of the pickup 4 is input to a focus servo circuit 5, a tracking servo circuit 6, and a phase comparison circuit 9 including an RF amplifier. In the focus servo circuit 5, a focus error is generated. It is sent to the actuator and pickup feed servo circuit 7. The pickup 4 is fed in the radial direction of the CD 2 by the output of the pickup feed servo circuit 7. The phase difference between the reproduction clock signal obtained by the phase comparison circuit 9 and the reference clock signal from the clock generation circuit 13 is detected by the spindle servo circuit 8, and the spindle clock signal is supplied to the CD2 so that the track linear velocity becomes constant. The motor 3 is driven. The output of the phase comparison circuit 9 is supplied to an EFM demodulation circuit 10 including a frame synchronization circuit, and this demodulation circuit is processed by a data processing circuit 11 that performs error detection and correction of the demodulated data signal. Thereafter, the data is temporarily stored in the data memory 12, read out by a clock signal having a constant cycle from the clock generation circuit 13, and converted into an analog signal by the D / A converter 14. The output 14 of the D / A converter is supplied to an output terminal as left and right audio signals via an output LPF (low-pass filter) / amplifier circuit 15. On the other hand, a control signal or the like in the data from the demodulation circuit 10 is supplied to a system controller 17, and a TOC (Tab) which is address data of the CD2 is provided.
leof Contents) information is read and RAM
16 is stored. The system controller 17 is composed of a microcomputer, and has a key input of an operation unit 19 (reproduction start receiving means) and instruction codes recorded in a program area of a ROM 18 (even number group reproduction output means, even number group reproduction output means, separation means). Thus, a reproducing operation, selection of reproduced data, data supply to the display 20 and the like are executed. In the microcomputer constituting the system controller 17 having the above configuration, RO
The processor operating according to the program stored in advance in M18 performs the following processing. This will be described with reference to the flowchart of FIG. First, the system controller 17 reads the TOC information of CD2 and stores it in the RAM 16 (step S1). The file numbers of the TOC information are rearranged in the order of the time length of the data of each file, and a list is generated in the RAM 16 (step S2). At this time, if the recording state of the file number of CD2 is as shown in FIG. 3, the order of the generated file number list is as shown in FIG. Next, the generated list is divided into two groups: an even-numbered group and an odd-numbered group (step S3). FIG.
Are grouped into two groups as shown in FIG. Here, for convenience of explanation, an odd-numbered group is referred to as an A group, and an even-numbered group is referred to as a B group. In the description of FIG. 2, the file numbers of the group A are assigned in order of their time length as A (1), A
(2). . . A (n). B group also B (1),
B (2). . . B (m) (where m = n or m = n−
1). Since the preparation for reproduction of the CD device has been completed, the operation section 19 is operated as soon as the preparation for recording on the cassette tape recorder is completed, and the reproduction of the CD 2 is started (step S4). The file data of group A is referred to the list of group A.
From (1) to A (n), the data is continuously reproduced without leaving any gap, recorded on the tape, and the reproduction of all data is completed (step S5). In this state, recording of all the scheduled data has been completed on the side A of the cassette tape. At the completed position, the operation of the cassette tape is stopped, the tape is turned over, and an instruction is issued to the display unit 20 so as to continue recording (step S6). At this time, in the cassette tape recorder of the auto reverse system, the tape is shifted to the side B without turning over the tape. The recording on the B side is started by the operation unit 1
9 to start reproduction of CD2 (step S7). Here, whether the number of files in group A is equal to the number of files in group B (ie, when m = n) or different (the number of files in group A is one more than that in group B, ie, m = n−1) The determination is divided depending on the case (step S8). When the number of files in the A group and the B group is equal, the file data of the B group are reproduced sequentially in the order of shorter time length. Since the recording time of the data of the group A is always longer or at least equal, after reproducing the data of the group B, the reproduction of the CD2 is temporarily stopped by the time difference between the same ranks, and the cassette is reproduced for the time corresponding to that. The tape is advanced to record (step S11). Of course, when the recording times are equal, it is not necessary to pause. After setting the initial value of n in step S10, steps S11, S12, and S13 are repeated, and when the reproduction of the longest file data B (1) of the B group is completed, the flow branches in step S12 and the flowchart ends. Next, in step S8, when the number of files in the A group is different from the number of files in the B group, that is, when the number of files in the A group is one greater than the B group, the time of the last data in the A group is changed. Just the CD
Is temporarily stopped (step S9). That is, since there is no file in group B to be combined with the file in group A on the cassette tape, the cassette tape is advanced for a time corresponding thereto and the reproduction of CD2 is temporarily stopped in order to blank the tape. Here, since the number of files in the A group and the B group becomes the same as n−1, an initial value of n−1 is set and step S1 is performed.
Proceed to 1. Thereafter, the operation is performed as described above. After the above procedure is completed, the arrangement of the file data of the edited and recorded cassette tape is as shown in FIG. However, the case where the numbers of files of the A group and the B group are different is shown. In the figure, there is shown a case where there is no file to be combined with the file 7 of the group A in the group B. If the order of reproduction and pause is reversed in step S11, the arrangement of the file data of the edited and recorded cassette tape is as shown in FIG. However, the case where the numbers of files of the A group and the B group are different is shown. According to the present invention, the following effects can be obtained. As is apparent from the above description, when a cassette tape recorder is connected to the reproducing / editing apparatus of the present invention, and a compact disc is recorded on a cassette tape while being reproduced, the end point (the end point of the music) of each recording file on the A side is as small as possible. The start point (start point of music) of each recording file on the B side including a small blanking area can be recorded together. Thus, even if the tape is turned over at the end of an arbitrary file on the side A of the cassette tape, the start point of the file on the side B almost coincides, so that it is not necessary to locate each file. Further, if the tape is turned over at the end of an arbitrary file on the side B of the cassette tape, it is not necessary to locate the beginning of the file each time since the starting point of the file on the side A almost coincides.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an editing / playback apparatus showing one embodiment of the present invention. FIG. 2 is a flowchart showing the operation of one embodiment of the present invention. FIG. 3 is a recording example of file data on a CD medium. FIG. 4 is an example of a list in which files are sorted in chronological order. FIG. 5 is an example of a list in which files are sorted in chronological order and then divided into two groups. FIG. 6 is an example of an arrangement diagram of file data recorded on a cassette tape by the editing and reproducing apparatus of the present invention. FIG. 7 is an example of an arrangement diagram of file data recorded on a cassette tape by the editing and reproducing apparatus of the present invention. [Description of Signs] 2 CD (Compact Disc) 3 Spindle Motor 4 Pickup 5 Focus Servo Circuit 6 Tracking Servo Circuit 7 Pickup Servo Circuit 8 Spindle Servo Circuit 9 Phase Comparison Circuit 10 EFM Demodulation Circuit 11 Data Processing Circuit 12 Data Memory 13 Clock Generator 14 D / A converter 15 LPF (low-pass filter) / amplifier circuit 16 RAM 17 system controller 18 ROM (odd and even group reproduction output means,
Separation unit) 19 Operation unit (reproduction start receiving unit) 20 Display unit

Claims (1)

(57) [Claims 1] A file from a recording medium in which reproduction data of a plurality of files, each file number of the reproduction data, and a file recording time for each file number are recorded. In a reproduction / editing apparatus capable of selectively reproducing data for reproduction in a unit, a separating means for rearranging the file numbers in descending order of the file recording time and dividing the file numbers into two groups of odd-numbered and even-numbered; Odd group reproduction output means for reproducing the odd group file data by the separating means in order of recording time, and reproduction start reception means for suspending reproduction after the reproduction output means is completed and receiving start of even group file reproduction If the odd group and even group have different numbers of files at the start of even group playback, the last file in the odd group After pause playback only time corresponding to the over data time length,
If the number of files in the odd group and the even group is the same, the files are played back in ascending order of the data time length of the files in the even group without pause, and at the same time, after the playback of one file, the odd group of the same rank as the file in the time length is played. A playback / editing device comprising: an even-numbered group playback output unit for temporarily suspending playback by a difference from a time length of file data.