JP4803250B2 - Recording medium, recording method, and reproducing method - Google Patents

Description

  The present invention relates to a recording medium and a technique for recording / reproducing information on / from the recording medium. In particular, the present invention relates to a recording medium for storing image information and a technique for recording / reproducing the image information on the recording medium.

  As a device for reproducing image / audio information, there are a VTR (Video Tape Recorder), a DVD player, and the like.

Conventionally, as shown in FIG. 4, a plurality of pieces of image information (A, B, C,...) Are recorded as a stream (hereinafter referred to as STL) on a video tape or DVD. Play list information (hereinafter referred to as “PL.data”) for managing the reproduction order and reproduction time of the image information is recorded.

And image information (A, B, C,...) Recorded on a video tape or DVD
When playing back, PL. Image information (A, B, C,...) is reproduced based on the data. Thereby, for example, PL. When the data has the contents shown in FIG. 4, the image A, the image C, and the image B can be reproduced in the order of reproduction, the image A can be reproduced for 5 seconds, the image C can be reproduced for 10 seconds, and the image B can be reproduced for 3 seconds.

However, in the prior art, PL. Since the reproduction order and reproduction time of the image information could not be set without using the data, for example, when the reproduction time and the reproduction order are fixed for the images A and B, PL. It was necessary to record the data on a recording medium such as a video tape or a DVD. However, in this case, PL. There has been a problem of reducing the amount of data information and effectively using the recording area of the recording medium. In addition, there is a problem of increasing the degree of freedom in setting the reproduction time and reproduction order of image information.

  An object of the present invention is to solve the above-described problems of the prior art.

The above object is solved by the invention described in the claims.

  Further, in the technique for recording image information on a recording medium, a plurality of pieces of image information each having a predetermined reproduction time information added thereto are arranged in the order of reproduction, and recorded as one plural image file on the recording medium, One image information to which arbitrary reproduction time information is added is recorded on the recording medium as one single image file, and the playlist file includes information indicating the reproduction order of the plurality of image files and the single image file. Is recorded on the recording medium.

  As described above, the present invention can effectively use the recording area of the recording medium. In addition, the degree of freedom in setting the reproduction order and reproduction time of image information can be increased.

Hereinafter, the first embodiment will be described. The present invention can be applied to any recording medium such as a video tape, an optical disk, a memory stick, and a hard disk, and an apparatus for recording and reproducing information on the recording medium. In this embodiment, the recording medium is an optical disk. It will be explained as being.

  FIG. 1 is a diagram showing a recording / reproducing apparatus according to the first embodiment. First, a process for recording image information on an optical disc will be described.

  The instruction input circuit 101 is a circuit that outputs the inputted instruction information to the control circuit 102. The control circuit 102 controls each circuit of the recording / reproducing apparatus. When the instruction information for recording the image information is input from the instruction input circuit 101, the control circuit 102 compresses the image information input from the image information input terminal 103 by the image compression / decompression circuit 104 and temporarily stores it in the buffer memory 105. The information is recorded on the optical disc 107 by the recording / reproducing circuit 106.

In this embodiment, for example, when the playback time and playback order of the images A, B, and C are fixed, as shown by 201 in FIG. 2, the images A, B, and C and their playback times (
The first image A is recorded on the optical disc as an image information file (referred to as StillG1.STL) having a structure in which the reproduction time base point is 0 seconds) arranged in the reproduction order.

  Thereby, PL. For setting the reproduction time and reproduction order of the images A, B, and C is set. data becomes unnecessary, and PL. The amount of data information can be reduced, and the recording area of the optical disk can be used effectively.

Further, in this embodiment, when the reproduction time and the reproduction order are not fixed as in the images D and E, the images D and E are images composed of one piece of image information as shown in 202 and 203. Files (hereinafter each file is StillD.STL
StillE. (Referred to as STL). In this case, the reproduction order and reproduction time of the images D and E are PL. Since it is set by data, an arbitrary value (X) is written in the reproduction start time information of the images D and E. This value may be, for example, no time setting or a relatively long period of 60 seconds.

  In this embodiment, PL. As shown in 204 and 205, data is recorded on the optical disc as a playback sequence information file (hereinafter, each file name is referred to as PL1.dat and PL2.dat) with the playback order and playback time of the image as one set. Is done.

  Next, processing for reproducing image information recorded on the optical disc will be described. First, when instruction information for reproduction is output from the instruction input circuit 101, the control circuit 102 causes the recording / reproduction circuit 106 to record the PL. Play data. And PL. Image information is reproduced based on data. The image information reproduced by the recording / reproducing circuit 106 is temporarily stored in the buffer memory 105, converted to analog by the analog converting circuit 108, and displayed on the LCD. That is, for example, PL1. When playing back with a data sequence, PL1. According to the reproduction sequence information of data, first, image information StillD. The STL is played for 5 seconds, and then the image information StillE. STL is played for 10 seconds, and then StillG1. The reproduction operation is performed according to the arrangement of the STL image information and the reproduction time. Also, PL2. For data, PL2. According to the reproduction sequence information of data, first, image information StillD. When the STL is reproduced from the medium, but the reproduction time is a predetermined value Y seconds, for example, when there is an instruction from the instruction input circuit 101 to reproduce the next image, the StillG1. The reproduction operation is performed according to the arrangement of the STL image information and the reproduction time, and then the image information StillE. The STL is played for 5 seconds.

  As described above, in the first embodiment, the playback order and playback time of the images to be played back can be freely set individually, and the playback sequence can be determined for each playback sequence information file that determines each playback sequence. If there is no need to set the playback time for each sequence information file, and it is not necessary to set the playback order and playback time in a fixed sequence, the sequence is transferred to the image information file shown in 101. Since the contents described in the reproduction sequence information file can be saved, it is advantageous as a recording format for a medium having a limited capacity.

  Also, if an image whose playback time is not specified in advance or an image with an infinite playback period is recorded in a single information file, the continuity of the time information in the information file may be lost or inconsistent. However, the consistency of the information file can be maintained by making such a file a separate file.

Next, a second embodiment will be described with reference to FIG. In FIG. 3, reference numeral 301 denotes image information having a structure in which information of a plurality of images and their reproduction times (the first image 1 is 0 seconds from the reproduction time base) are arranged in the order of reproduction. Reference numerals 302 and 303 denote image information for one sheet. Here, 301, 302, and 303 are recorded as one file (hereinafter, this file name is referred to as Still.STL). Here, 301 is recorded in a continuous STC (System Time Clock) sequence. Specifically, it is recorded in the MPEG transport stream format, and the same STC sequence information has the same PID (packet ID). On the other hand, 302 and 303 are recorded in different STC sequences, and are recorded in information packets having different PIDs.

As described above, in the second embodiment, by dividing the STC sequence, even if it is recorded on a single file, it can be handled as a substantially different information file. As a result, similar to the first embodiment, a different PL
. Even in the case of reference from data, the playback order and playback time can be set individually and freely.

  Further, when recording is performed by dividing the STC as shown in FIG. Information indicating which STC sequence corresponds to an image to be reproduced is recorded in data. As a result, even if image information having an infinite reproduction time exists, the STC sequence of the image is separated from the STC sequence of other consecutive images, so that there is no inconsistency in the time information in the information. .

In this embodiment, only one image information file 301 is provided. However, there may be a plurality of files, and files such as 302 and 303 that have different playback times and playback times for each playback sequence information file. Any number is acceptable.
In the present embodiment, the reproduction time of the image handled in the image information file is shown as being recorded as the reproduction time. However, this reproduction time may be recorded as the reproduction time of one image. Good.

The block diagram of the recording / reproducing apparatus of 1st embodiment. The image figure which shows the image information and play list information on a recording medium in 1st embodiment. The image figure which shows the image information and play list information on a recording medium in 2nd embodiment. The image figure which shows the image information and play list information on a recording medium in a prior art.

Explanation of symbols

201... Image information file having a structure in which information of a plurality of images and their reproduction times (the first image 1 is 0 seconds from the reproduction time base) are arranged in the order of reproduction. An image file composed of image information, 203... An image file composed of one piece of image information, 204... A reproduction sequence information file with one set of image reproduction order and reproduction time, 205. And playback sequence information file with playback time as one set

Claims (4)

A reproduction method for reproducing a plurality of still image information recorded on a recording medium,
The plurality of still image information is recorded on the recording medium as one file corresponding to different STC (System Time Clock) sequences,
The recording medium stores a plurality of playlists indicating the playback order of the plurality of still image information, and the plurality of still image information to be played back corresponds to which STC sequence in the plurality of playlists. Information indicating whether or not
The plurality of still image information recorded in the recording medium as one file can be referred to from the plurality of playlists,
Control the playback order of the still image information based on the playlist recorded on the recording medium,
A mode for controlling the reproduction time of the image information based on predetermined reproduction time information added to the still image information;
A mode for controlling the reproduction of the still image information in response to a predetermined instruction input based on the reproduction time information included in the playlist, independent of the time information added to the still image information;
How to play with. A playback device for playing back a plurality of still image information recorded on a recording medium,
The plurality of still image information is recorded on the recording medium as one file corresponding to different STC (System Time Clock) sequences,
The recording medium stores a plurality of playlists indicating the playback order of the plurality of still image information, and the plurality of still image information to be played back corresponds to which STC sequence in the plurality of playlists. Information indicating whether or not
The plurality of still image information recorded in the recording medium as one file can be referred to from the plurality of playlists,
A playback unit and a control unit for controlling the playback unit;
The controller is
Control the playback order of the still image information based on the playlist recorded on the recording medium,
Controlling the playback time of the still image information based on predetermined playback time information added to the still image information, or
Controls the playback unit to play back the still image information in response to a predetermined instruction input based on the playback time information included in the playlist, independent of the time information added to the still image information. A reproducing apparatus. A recording method for recording information on a recording medium,
A step of recording a plurality of still image information corresponding to different STC (System Time Clock) sequences as a single file on the recording medium with predetermined reproduction time information added thereto;
Playing back the playback time information of the still image information according to the playback order independent of the playback time information added to the still image information in the playlist that defines the playback order of the still image information Including information indicating which STC sequence corresponds to a plurality of still image information;
Recording the plurality of playlists on the recording medium such that the plurality of still image information recorded on the recording medium as one file can be referred to from the plurality of playlists;
A recording method characterized by comprising: A recording device for recording information on a recording medium,
A recording unit and a control unit for controlling the recording unit;
The controller is
Predetermined playback time information is added, and a plurality of still image information corresponding to different STC (System Time Clock) sequences are recorded as one file on the recording medium,
Playing back the playback time information of the still image information according to the playback order independent of the playback time information added to the still image information in the playlist that defines the playback order of the still image information Including information indicating which STC sequence corresponds to multiple still image information,
The plurality of playlists are recorded on the recording medium such that the plurality of still image information recorded on the recording medium as one file can be referred to from the plurality of playlists. A recording apparatus for controlling a recording unit.

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