JPH06302155A - Video disc recorder, video disc, and information management method - Google Patents

Abstract

(57) [Summary] [Purpose] Not only currently accessible disks,
Provided is a video disc recorder which is capable of obtaining information about a plurality of discs not currently accessible. [Structure] Give a uniform volume name to a video disc, store the information of the files recorded on the disc belonging to the volume in the video disc and the video disc recorder, and let the user list all the files belonging to the volume. It has a function to display its contents so that it can be searched at all times.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video disc recorder and a video disc for recording and reproducing digitized moving images, and an information management method thereof.

[0002]

2. Description of the Related Art Moving image data is recorded on a video tape or a video disk as an analog signal or digitally recorded on a high speed video tape. As a read-only disc, a method of recording digital moving image data compressed by using a CD-ROM has also been performed.

As a method of managing recorded information of video data, Japanese Patent Laid-Open Nos. 62-8389 and 4-3012 are available.
85 and those disclosed in JP-A-4-337590 are known.

[0004]

When a television program is recorded on a video disc or the like, information about the program is stored in the data management area of the disc such as file name, file attribute, file creation status, physical address information where actual data exists,
Alternatively, it can be recorded as logical address information and managed based on it. However, when handling multiple disks, it is the user who manages what kind of information is recorded on which disk. Be entrusted to. Also,
In order to manage the recorded contents in the video tape recorder, it is necessary to record management information everywhere on the tape or save a memory capable of sufficiently holding them in the video tape recorder. In addition, the CD-ROM only allows access to the contents of the disc itself.

The present invention is intended to solve the above problems, and makes it possible to centrally manage information on a plurality of disks.
Another object of the present invention is to provide a video disc recorder that does not require a large memory in the system.

[0006]

SUMMARY OF THE INVENTION The present invention is a video disk recorder capable of recording and reproducing moving image data and audio data, having a memory for holding management information of data recorded on a plurality of disks, and a plurality of disks. It is characterized by outputting the information of the file existing above.
In addition, management is performed by giving one management volume name to a plurality of video discs, and recording information management data regarding a disc group having the same volume name on each disc together with the volume name. To do.

[0007]

【Example】

(Embodiment 1) FIG. 1 is a block diagram of a video disk recorder of the present invention. 2, 3 and 4 are flow charts showing a recording / reproducing sequence of the video disc recorder according to the present invention. Further, FIG. 5 is an example of a method for managing a recording area of a video disc used in the video disc recorder of the present invention. In this embodiment, digital moving image data and audio data are recorded by magneto-optical recording as a video disc.

The sequence of FIG. 2 will be described. If the video disc loaded in the video disc recorder is an unused one, the video disc recorder of the present invention will ask the user whether to set the volume name. If the user does not set the volume name,
Record that there is no setting in the relevant part of the file management area of the disc. When the user sets a volume name, the volume name is set over multiple disks and the system asks whether to centralize file management.
When the user sets the centralized file management, the volume name provided in the file management area of the disk and data indicating that the volume name is shared by a plurality of disks are recorded. Hereinafter, this volume management is called an integrated volume. Even if the user has already set the integrated volume or the independent volume name of a single disk, if the user does not agree to the integration, the integration process is not performed.

When data is recorded on this disc,
The volume management RAM of the video disk recorder stores information indicating the contents of the file such as the file name, recording time, data source, and file attributes. at the same time,
The contents are recorded in the volume management area on the disc. At this time, if the file information of another disc belonging to the integrated volume has already been stored in the RAM of the video disc, the content thereof is also recorded on the disc.

If the recorded content is a television program, the file information includes the program name, program category, broadcast channel, broadcast date and time, and time.

Next, the sequence of FIG. 3 will be described. When the already recorded disc is loaded in the video disc recorder of the present invention, first, the volume management area is accessed to determine whether or not it belongs to the integrated volume. As shown in FIG. 5, the content of the disk used in the present invention is managed, and the volume management area is set. If the disk belongs to an integrated volume, the contents of the RAM in the recorder and the information in the volume management area of the disk are compared. If the contents of RAM include new content, the data is written to the volume management area of the disk. If the contents of RAM are older than the information on the disc, the contents of RAM are rewritten. At this time, the content to determine whether or not to update the information regarding the recording time is set. The necessity to do this is to cope with the case where the disc is recorded by another video disc recorder or the recorded contents are erased.

Next, the sequence shown in FIG. 4 is started. When the user requests access to the file recorded on the disc, the video disc recorder of the present invention is
The contents of the RAM for volume management are output to the television screen through the character image generation circuit as shown in FIG. The output contents are not limited to currently accessible discs, and the recorded contents of other discs can be searched at once. If the user specifies the contents of a disc other than the currently accessible disc, the user is prompted to replace the disc through the image. Alternatively, it can be performed by voice.

Here, the method of using the television screen to access the file is shown, but it is also possible to provide the video disk recorder with its own character display to display information to the user. Further, the above-described display may be provided in the remote control device of the video disc recorder of the present invention, and information may be sent from the main body to the remote control device.

(Embodiment 2) In the next embodiment, the compatibility of the disc is further improved as compared with the above-mentioned embodiment. First, the basic sequence is similar to that of FIGS. 2 to 4, but unlike the first embodiment in which volume management is provided on the disk, a dedicated volume management area is not provided, and normal image or audio information is recorded. A file for volume management is provided in the area to be controlled, and the same management as that in the above-described embodiment is performed there. Needless to say, information indicating the volume management file is recorded in the file management area. FIG. 6 shows a method of managing the recording area of this video disc. According to this method, it is possible to deal with the case where a video disk is shared by a video disk recorder that does not perform volume management as in the present invention.

(Embodiment 3) Next, a method of handling a plurality of integrated volumes by one video disk recorder will be described.
In this case, the video disc recorder does volume management
The contents are managed for each integrated volume name stored in RAM. Further, the disc of the system of the first embodiment is used to record only the contents regarding the volume to which the disc belongs in the volume management area. This makes it very easy for each user to manage a plurality of discs when one video disc recorder is shared by a plurality of users.

The same processing can be performed when a volume management file is provided in the normal information area using the method of the second embodiment. In this case, it is also possible to record information about the integrated volume to which the accessed disk does not belong in another volume management file. In this way, even if the contents of the RAM of the video disk recorder is lost for some reason, it will be possible to recover by using one disk.

(Embodiment 4) The video disk recorder of the present invention shown in FIG. 1 can record and reproduce a magneto-optical recording signal, but can also reproduce phase pit information previously formed on the disk. Is. This is the content realized in any current magneto-optical recording device.

The video disc recorder of the present invention does not record the content in the volume management RAM when the video disc for reproduction is reproduced. When the read-only disc has an integrated volume, the contents cannot be updated, and the management information contents of the integrated volume are common to all the discs. Therefore, the access processing method is the same as in the first embodiment.

However, even a read-only disc that is published later may have a file that has the same integrated volume name and is not recorded in the previously published disc. In this case, it is possible to record the content indicating additional information in the volume management area of the read-only disc so that only the information relating to the additional information can be held in the RAM of the video disc recorder.

[0020]

When the digital recording as shown in the embodiment is performed on the disc, the contents of the disc can be easily displayed and accessed. However, the video disc recorder of the present invention has a plurality of functions. It is possible to retrieve the file contents of the disc at any time. Further, since the disc always holds the information regarding the file contents of a plurality of discs, even if the contents stored in the recorder disappear for some reason, the data can be restored. Further, since a plurality of users can manage a plurality of discs at the same time, it is possible for a family to enjoy having their own disc. In addition, by forming a uniform volume on each of the video discs that form a series of playback-only series, the contents of all the discs can be understood regardless of which disc is inserted, and the user's search can be performed. It is possible to facilitate. Furthermore, even if a playback-only disc is newly added, it can be dealt with only by holding a part of the information in the video disc recorder.

[Brief description of drawings]

FIG. 1 is a block diagram of a video disc recorder according to the present invention.

FIG. 2 is a flowchart showing an information management method of a video disc recorder according to the present invention.

FIG. 3 is a flow chart showing a method of managing information of a video disc recorder according to the present invention, following FIG. 2;

4 is a flow chart showing a method of managing information of a video disc recorder according to the present invention, following FIG.

FIG. 5 is a diagram showing an information management area of a video disc used in the present invention.

FIG. 6 is a diagram showing an information management area of a video disc used in the present invention.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroshi Hirayama 3-3-5 Yamato, Suwa City, Nagano Seiko Epson Corporation (72) Inventor Shojiro Kitamura 3-3-5 Yamato, Suwa City, Nagano Prefecture Seiko Epson Within the corporation

Claims (8)

[Claims] 1. A video disc recorder capable of recording and reproducing moving image data and audio data, having a memory for holding management information of data recorded on a plurality of discs, and storing information of files existing on the plurality of discs. A video disc recorder characterized by outputting. 2. The video disc recorder according to claim 1, wherein the contents of the memory are compared with management information existing on the disc, and the contents to be updated in the memory are updated and stored again. And a video disc recorder. 3. The video disc recorder according to claim 2, wherein the management area for managing the recorded contents of the disc manages the address of the recorded data in the disc which is currently mounted and accessible. For internal use of other discs that are not currently accessible, at least data capable of identifying the contents of the recorded data file is recorded in a predetermined disc area. And a video disc recorder. 4. The video disk recorder according to claim 3, wherein an area for holding the recorded contents relating to a plurality of disks is provided in a normal data recording area of each disk, in addition to the management area of the recorded data. Video disc recorder. 5. Management is performed by assigning one management volume name to a plurality of video discs and recording information management data relating to disc groups having the same volume name on each disc together with the volume name. Information management method characterized by. 6. The information management method according to claim 5, wherein information on a plurality of volumes is recorded on all disks existing in the plurality of volumes to manage information on the plurality of volumes. . 7. The information management method according to claim 5, wherein information about the volumes of a plurality of read-only video discs is recorded on all of the discs, and a new read-only video disc is added to the read-only video disc group. In the case of adding information, information indicating that it is additional information is recorded in the information about the volume of the video disk to be added, and only the additional information is stored in the video disk recorder for information management. Management method. 8. A video disc used in the video disc recorder according to claim 1, wherein an information area of the disc holds at least physical information of the disc, and an area for managing recorded files.
A video disc characterized by having an area for holding the recorded contents of other discs.