JP3410459B2 - Playback method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing method for a recording medium on which acoustic data and still image data are recorded.

[0002]

2. Description of the Related Art In a compact disk (CD) that has appeared as an optical disk for recording music, each music piece to be recorded is managed in units called tracks.
The audio (acoustic) data of the music is recorded as track data, and sequential track data is recorded in the recording area of the disc. Also, from among the tracks recorded on the disc, you can selectively play the track you want to play,
On the disc, track reproduction information (T, such as start address, end address, reproduction time, etc.) of each track on the disc
C) is recorded. In recent years, originally one compact disc (CD) with a diameter of 12 cm for recording music has 6
Since it is possible to record a large amount of digital data of 00 MB, a CD-ROM in which digital data of a computer program and other digital data are recorded, and a CD in which acoustic information and information other than acoustic information are recorded
-In addition to the widespread use of ROMs, for example, video CDs such as digital video karaoke, music videos, viewing of anime, teaching materials for English conversation, teaching materials for early childhood education, etc. in various fields of use, Recently, a DVD having a large capacity of a video CD has been put into practical use.

For example, the above-mentioned video CD has a file structure conforming to ISO 9660, and the tracks of track numbers 1 to 99 are provided between the lead-in area at the innermost circumference of the disc and the lead-out area at the outermost circumference of the disc. Is provided. In the lead-in area, TOC (content list ... Start address of each track) is recorded, and the track of track number 1 (video CD track) is used for various files for disc management and playback control. Data, still image data, and an application program necessary for a reproducing operation in a CD-I player are recorded. Also, a video / audio bit stream compressed by MPEG1 is recorded on the tracks of track numbers 2 to 99, and information indicating the end of the program is recorded on the lead-out area.

As the use of the optical disc is widened as described above, from the optical disc recorded with acoustic information and image information,
Reproducing devices capable of simultaneously reproducing an audio signal and an image signal are becoming widespread, and there is provided a device capable of switching and displaying a plurality of still images while reproducing high-quality sound (sound). Then, the number of the still images is set to about 10 to 20 per track, and each of the still images is displayed at a designated time in the track, so that many applications as described above can be achieved. It is believed that satisfactory results can be obtained. FIG. 5 is a diagram for explaining an outline of an arrangement aspect of recording data in a conventional optical disc in which acoustic data and still image data are mixedly recorded. In the example of the arrangement aspect of recording data in the optical disc shown in FIG. The track control data TC1 to TC3 are recorded in the TOC area of the innermost circumference of the track control data TC1 to TC3.
3 recording areas, followed by sequential track data 1 to 3
A recording area in which is recorded is provided. Track control data TC1 in the figure is control information such as a start address, an end address, and a reproduction time on the disc of the track on which the track data 1 is recorded. Similarly, the track control data TC2 and TC3 are track data. A few
It is control information such as a start address, an end address, and a reproduction time of the recorded tracks on the disc. The track data 1 to 3 described above are shown in FIG.
As illustrated with respect to the track data 1 therein, still image data and acoustic data are still image / acoustic data blocks in a state where they are sequentially arranged alternately.

[0005]

In the conventional optical disc having the recording data arrangement as shown in FIG.
When one track data is played back from the beginning, it is possible to continuously play back audio (sound) and display one still image after reading all the still image data in the block. As a result, successive still images can be displayed at desired timings. However, when the above-mentioned arrangement of recording data in the conventional optical disc is adopted,
Since the reproduction timing of the still image is determined according to the data arrangement mode, it has been a cause of delaying the disc production process. Further, when the recorded data is arranged as described above, it is complicated when the still image data (still image) is changed (including deleted) after the data arrangement is completed once. Even if you want to display a specific still image in the same track or between multiple tracks, you need to repeat the same data arrangement work, and use the same still image data as the playback timing. Since it is necessary to record (arrange) the data in duplicate, the recording time of the acoustic information may be pressed within the limited storage capacity of the entire disc.

[0006]

Therefore, in order to solve the above-mentioned problems, the present invention provides an audio data recording area in which a plurality of tracks for recording audio data are provided, and still image data for recording still image data. A disk-shaped recording medium having a recording area of, and a recording area of track control information for recording track control information for each track described above,
In the recording area of the still image data, one still image or still image data corresponding to two or more still images is set as one group, and the still image data is recorded for each group. The specified track control information specifies information for specifying one of the groups to be reproduced in association with reproduction of the acoustic data of the track corresponding to the track control information, and one piece of still image data in the specified group. A reproduction method for a disk-shaped recording medium recorded as information including information that includes information to be displayed and information that specifies the display timing of one piece of still image data. When the track selected as the target is played back, the audio data of the track in the track control information about the selected track is played back. A step of controlling to store in the memory for still image data a group designated by the information designating one of the groups to be played back in association with each other, and the track control information for the selected track. Allowing the reproduction of an acoustic signal based on the acoustic data in the selected track to be started after the group has been stored in the still image data memory; and the selected track. In the track control information of, the information that specifies one piece of still image data in the specified group and the information that specifies the display timing of the one piece of still image data, A still image based on the specified one still image data is displayed on the basis of the specified display timing. Reproducing method characterized by comprising the steps of so as to display the ring, the. Furthermore, “a recording area for acoustic data in which a plurality of tracks for recording acoustic data are provided, a recording area for still image data for recording still image data, and a track for recording track control information for each track described above. A disk-shaped recording medium having a control information recording area, wherein the still image data recording area includes one still image or two or more still image data corresponding to one group. As the above, the still image data is recorded for each group, and the track control information includes information for designating one group to be reproduced in association with reproduction of acoustic data of a track corresponding to the track control information. , Information specifying one still image data in the specified group and display timing of the one still image data A reproducing method for a disk-shaped recording medium recorded as information including information and a set of information, wherein the selected track is reproduced when reproducing the track selected as a reproduction target. In the track control information of, the group specified by the information specifying one of the groups to be reproduced in association with the reproduction of the acoustic data of the track,
Controlling to store in the still image data memory, and after the group specified by the track control information for the selected track has been stored in the still image data memory, The step of causing the reproduction of an audio signal based on the audio data in the selected track to be started, and a still image in the specified group in the track control information for the selected track. Based on the information that is a combination of the information designating the data and the information designating the display timing of the one still image data, the still image based on the one designated still image data is specified as above. The step of displaying from the timing based on the selected display timing, and the transfer selected as the playback target described above. Even after the end of the playback operation of the click,
The group stored in the memory for still image data is kept stored and reproduced in association with the reproduction of the audio data of the track in the track control information of the track selected next as a reproduction target 1
When it is determined that the group designated by the information designating one group is the same as the group which is continuously stored in the still image data memory, the group of the still image data memory from the recording medium is determined. And a step of controlling so that the storing operation is not performed. Is provided.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Specific contents of a recording medium and a reproducing apparatus for audio data and still image data according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a schematic configuration of a reproducing apparatus for reproducing an acoustic signal and a still image signal from a recording medium of the acoustic data and the still image data of the present invention, and FIG. 2 is an acoustic data and still image of the present invention. It is a figure which shows the example of arrangement | positioning aspect of the recording data in the recording medium of image data. 3 and 4 are diagrams used for explaining a reproducing operation when reproducing an audio signal and a still image signal from a recording medium of the audio data and the still image data according to the present invention.

In the reproducing apparatus shown in FIG. 1, reference numeral 1 is a disk reproducing section, and this disk reproducing section 1 comprises an optical disk drive mechanism, an optical head, a focus control section and a tracking control section, a signal processing section, an operation section and the like. It is configured to include. 2 is a control unit, 3 is a changeover switch, 5 is a still image data memory, 6 is a still image decoding and output unit (still image decoding and output unit), and 7 is an audio decoding and output unit (acoustic decoding and output unit). is there. Here, first, with reference to FIG. 2, an arrangement mode of data in the optical disk to be reproduced by the disk reproducing unit 1 will be described. In FIG. 2, T
C1 to TC3 are track control information (track control information T
C1 to TC3 are recorded areas), and the track control information (TC) is the entire still image (still image group) prepared corresponding to each track so as to be reproduced for each individual track. ), The designation of a specific still image (still image number) within the entire specified still image (still image group), and the designation of the display timing of the specific still image. It is configured to include a set of information and other information, and a specific example thereof is illustrated in FIG.

The track control information TC is provided individually corresponding to each track to be recorded (arranged) on the optical disk. FIG. 2 exemplifying the case of an optical disk in which three tracks are arranged has three track control information TC1 to TC corresponding to each track.
3 is shown. Each track control information TC1 to TC3
The recording area in which is recorded is illustrated as being provided on the inner circumference of the optical disc in the example shown in FIG. 2, but the recording area for the control information is provided outside the optical disc. Good.

Track data 1, track data 2, and track data 3 in FIG. 2 are acoustic data (audio data) for each track that are sequentially recorded (arranged) on the optical disc, and are recorded on the optical disc. All the sound data to be reproduced, that is, all the track data 1 to 3 illustrated in FIG. 2 are recorded in a predetermined arrangement mode in the recording area of the sound data. Further, in the still image data recording area in FIG. 2, all the still image data corresponding to the still images to be reproduced during the respective sound reproduction periods reproduced based on the sound data of the above-mentioned tracks are collectively collected. FIG. 2 shows an example of an arrangement mode of a plurality of still images in the still image data recording area, which is a recording area to be recorded.

In the example shown in FIG. 2, the still picture to be reproduced during the reproduction of the sound based on the track data 1 of the track number 1 is still picture data # 1.
It is three still images corresponding to # 3 (three still images indicated by still image numbers # 1 to # 3 belonging to a specific still image group corresponding to the track of track number 1), and the track number The still images to be reproduced during the reproduction of the sound based on the track data 2 of the two tracks are three still images corresponding to the still image data # 1 to # 3 (specific still images corresponding to the track of track number 2). The still images belonging to the image group are three still images represented by the still image numbers # 1 to # 3), and the still images to be reproduced during the reproduction period of the sound based on the track data 2 of the track of the track number 3 are Five still images corresponding to still image data # 1 to # 5 (five still images indicated by still image numbers # 1 to # 5 belonging to a specific still image group corresponding to the track of track number 3) Is said to be .

The term "still picture group" is used as a term corresponding to "group to which still picture data belongs" described in FIG. In addition,
Even when the above-mentioned still image group is constituted by only one still image, it is treated as one still image group. Further, as the “group number to which the still image data belongs” described in FIG. 3, for example, from one end side in the still image data area to the sequentially arranged still image groups, To 1,
Numbering such as 2 is performed so that each still image group can be distinguished. In the example shown in FIG. 2, the recording areas are arranged in the order of the recording area of the track control information TC, the still image data recording area, and the track data recording area. In implementing the present invention, it goes without saying that the arrangement mode of each recording area may be set as follows: track control information recording area → track data recording area → still image data recording area.

Next, a specific example of the track control information will be described with reference to FIG. In FIG. 3, each information such as the track start position, the track end position, and the track reproduction time is the same information as the information recorded in the TOC (content list) area of the conventional optical disc.
First, “the recording position of the start end of still image data corresponding to a still image reproduced during the reproduction of sound based on track data” is the start position of a specific still image group corresponding to a specific track, and , "The recording position at the end of the still image data corresponding to the still image reproduced during the reproduction of the sound based on the track data" is the end position of the specific still image group corresponding to the specific track, and As each position, for example, the sector number of the optical disk can be used. The playback device can determine the range of a specific still image group to be read prior to the playback of each track based on the above information.

Next, the "group number to which the still picture data belongs" is used as information for the reproducing apparatus to specify the still picture group to which the still picture data stored in the still picture data memory 5 belongs. However, depending on the control mode of the reproducing apparatus, the still image group to which the still image data stored in the still image data memory 5 belongs can be specified by the information of the start position and the end position of the specific still image group. . As shown in FIG. 3, a specific example of the “still image display information” is the display start time, the recording position of the starting end of the still image data, and the recording position of the starting end of the still image data on the table. , Still image number, etc. are arranged.

The recording position of the start point of the above-mentioned still image data,
Information such as the recording position at the start of still image data and the still image number is used to identify the still image to be displayed. Further, the display start time defines the time (timing) at which a still image is displayed, starting from the reproduction start time of the track to be reproduced. A sector number may be used as the information such as the recording position of the start edge of the still image data and the recording position of the start edge of the still image data. In FIG. 3, the sector number may be used as the information. An example is shown in which a sector number starting from is used. Further, in the example shown in FIG. 3, among the three still images represented by the still image numbers # 1 to # 3 belonging to the specific still image group corresponding to the specific track to be reproduced, the still image is selected. The two still images of numbers # 1 and # 3 are illustrated as being displayed twice each during the reproduction period of the specific track targeted for reproduction.

Next, the specific structure and operation of the reproducing apparatus illustrated in FIG. 1 will be described with reference to FIG. The user reproduces the optical disk selected as the reproduction target by the disk reproduction unit 1
When the optical head of the optical disc reproducing unit 1 is mounted on the disc driving unit of the optical disc and the information of the track number desired to be reproduced is input from the operating unit, the optical head in the optical disc reproducing unit 1 performs the track control from the track control information area of the optical disc according to the control information from the control unit 2. The information is read and given to the control unit 2, and the track control information is stored in the memory in the control unit 2 (step S1 in FIG. 4). The control unit 2 inspects the stored contents of the still image data memory 5 to determine whether the still image data memory 5 stores valid data, that is, whether the still image data of the optical disk to be reproduced is stored. Is determined (step S2 in FIG. 4). If the still image data is stored in the still image data memory 5, the process proceeds to step S3, and if not, the process proceeds to step S4. It should be noted that when track reproduction is performed for the first time from the optical disk that is the object of reproduction, there is no valid still image data in the still image data memory 5.

In step S3, the still image data stored in the still image data memory 5 is read as still image data of the still image group to be reproduced during the reproduction period of the track to be reproduced. It is determined whether or not it is the same as the still image data of the still image data group instructed to be performed. The above determination may be performed by comparing the still image group numbers, or may be performed by comparing the recording position range information of the still image groups. If it is determined in step S3 that they are the same still image group, the process proceeds to step S8 and step S8.
If it is determined in 3 that the still image group is different, the process proceeds to step S4, and the changeover switch 3 supplies the data output from the disc reproducing unit 1 to the still image data memory 5 by the changeover signal from the control unit 2. Switching operation is performed.

The control unit 2 also records still image data of a still image group designated to be reproduced by the optical head of the disc reproducing unit 1 during the reproduction period of the track to be reproduced. After moving to the head position of the recording area (step S5 in FIG. 4), the optical head reads the still image data of the specified still image group, and the still image data is read via the changeover switch 3 for still image data. The still image data of the specified still image group is supplied to the memory 5 and stored in the still image data memory 5 (step S6 in FIG. 4). After the still image data of the specified still image group is stored in the still image data memory 5, the control unit 2 gives a changeover control signal to the changeover switch 3 to output the data output from the disc reproducing unit 1. Is supplied to the audio decoding output unit 7 (step S7) and the process proceeds to step S8.

In step S8, the control section 2 moves the optical head of the disk reproducing section 1 to the head position of the recording area in which the designated track data to be reproduced is recorded, and then the optical head is moved. To read out the specified track data and change it to the changeover switch 3
Is supplied to the acoustic decoding output unit 7 via the, and the acoustic decoding output unit 7 performs the decoding operation of the acoustic data in step S9,
An acoustic signal (voice signal) is sent to the output terminal 9. During the reproduction period of the above-mentioned acoustic signal, the control unit 2 performs step S1.
At 0, according to the still image display information in the track control information,
Predetermined still image data is read from the still image data memory 5 at a designated time (timing) and is supplied to the still image decoding output unit 6. The still image decoding output unit 7 decodes the still image data, and the still image signal is sent to the output terminal 8. The operation in step S10 described above is repeated by the number of pieces of designation information designated in the still image display information.

[0020]

As is clear from the above description, according to the present invention, information specifying one piece of still image data in a specified group (still image group) and one piece of still image data. The information designating the display timing of the image data can be reliably obtained as one set, and the accuracy of the display timing of the still image data can be improved. Furthermore, even after the playback operation for the track selected for playback is completed, the still image data of the still image group stored in the memory for still image data is kept stored and selected next as the target for playback. By the information that specifies the still image group prepared corresponding to the track in the track control information for the selected track, the still image group to be displayed corresponding to the newly selected track is stored in the memory for still image data. When it is determined that the still image group is the same as the still image group that has been stored, the playback operation that prevents the storage operation of the still image group from the recording medium to the still image data memory is enabled. In case of operation, unnecessary storage operation to the memory for still image data is omitted, so the sound reproduction between tracks becomes discontinuous. During and as it can greatly reduce, according to the present invention the conventional problems described above, all can be satisfactorily solved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a reproducing apparatus for reproducing an acoustic signal and a still image signal from a recording medium of acoustic data and still image data according to the present invention.

FIG. 2 is a diagram showing an example of an arrangement aspect of recording data in a recording medium of acoustic data and still image data according to the present invention.

FIG. 3 is a diagram used for explaining a reproduction operation when reproducing an audio signal and a still image signal from a recording medium of the audio data and the still image data according to the present invention.

FIG. 4 is a diagram used for explaining a reproduction operation when reproducing an audio signal and a still image signal from a recording medium of the audio data and the still image data according to the present invention.

FIG. 5 is a diagram showing an example of arrangement of recording data in a recording medium of conventional acoustic data and still image data.

[Explanation of symbols]

1 Disc playback unit 2 control unit 3 Changeover switch 5 Memory for still image data 6 Still image decoding output unit 7 Acoustic decoding output section

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Claims (2)

(57) [Claims] 1. A sound data recording area provided with a plurality of tracks for recording sound data, a still picture data recording area for recording still picture data, and a track for recording track control information for each track described above. A disk-shaped recording medium having a control information recording area, wherein one group of still image data corresponding to one still image or two or more still images is stored in the still image data recording region. As the above, the still image data is recorded for each group, and the track control information includes information for specifying one group to be reproduced in association with reproduction of acoustic data of a track corresponding to the track control information. , Information specifying one piece of still image data in the specified group and display timing of the one piece of still image data A reproducing method for a disc-shaped recording medium recorded as information including information and a set of information, wherein the selected track is selected when reproducing the track selected as a reproduction target. In the track control information, the group designated by the information designating one of the groups to be reproduced in association with the reproduction of the acoustic data of the track is controlled to be stored in the still image data memory, the group of which is designated by the track control information on the selected track, after the end stored in the memory still picture data, reproduction of the audio signal based on the acoustic data in said selected track is started In the track control information for said selected track. Based on the information that is a combination of the information designating one still image data in the designated group and the information designating the display timing of the one still image data, the designated one image And a step of displaying a still image based on the still image data from the timing based on the designated display timing. 2. An audio data recording area provided with a plurality of tracks for recording audio data, a still image data recording area for recording still image data, and a track for recording track control information for each track. A disk-shaped recording medium having a control information recording area, wherein one group of still image data corresponding to one still image or two or more still images is stored in the still image data recording region. As the above, the still image data is recorded for each group, and the track control information includes information for specifying one group to be reproduced in association with reproduction of acoustic data of a track corresponding to the track control information. , Information specifying one piece of still image data in the specified group and display timing of the one piece of still image data A reproducing method for a disc-shaped recording medium recorded as information including information and a set of information, wherein the selected track is selected when reproducing the track selected as a reproduction target. In the track control information, the group designated by the information designating one of the groups to be reproduced in association with the reproduction of the acoustic data of the track is controlled to be stored in the still image data memory, the group of which is designated by the track control information on the selected track, after the end stored in the memory still picture data, reproduction of the audio signal based on the acoustic data in said selected track is started In the track control information for said selected track. Based on the information that is a combination of the information designating one still image data in the designated group and the information designating the display timing of the one still image data, the designated one image The step of displaying a still image based on the still image data from the timing based on the specified display timing; and, even after the reproduction operation for the track selected as the reproduction target is completed, One group to be stored in the still image data memory and stored in association with the reproduction of the acoustic data of the track in the track control information of the next selected track to be reproduced. The group specified by the information that specifies is a group that is continuously stored in the memory for still image data If it is determined that the same, reproducing method characterized by comprising the steps of: controlling to store operation of the group is not performed for the still image data memory from said recording medium.