JP2002207628A5

JP2002207628A5 -

Info

Publication number: JP2002207628A5
Application number: JP2001002256A
Authority: JP
Filing date: 2001-01-10
Publication date: 2004-11-18

Claims

An AV data recording device comprising: a recording unit that records AV data as a data file on a disc; and a system control unit that controls an operation of the recording unit.
The system control unit reserves a continuous area on the disk as a reserved area, reserves a continuous area in the reserved area as a directory block, controls the recording unit, and stores a directory in the directory block. An AV data recording apparatus for recording a file entry and a file identification descriptor of a directory.

2. The AV data recording apparatus according to claim 1, wherein the system control unit secures an area having an arbitrary integral multiple of the size of the directory block as a directory block group, and the size of the directory block group is a unit of error correction. .

The system control unit secures the directory block group and, at the same time, stores an area for recording a file entry of a file described in the file identification descriptor of the directory and a part or all of the file in the reserved area. 3. The AV data recording apparatus according to claim 2, wherein the apparatus is secured.

3. The AV data recording apparatus according to claim 2, wherein the directory block group is secured according to a type and a specification of a data file to be recorded.

5. The AV data recording apparatus according to claim 4, wherein the system control unit secures an area having a size of an arbitrary integral multiple of the directory block group as a directory area.

The system control unit secures the directory area and, at the same time, secures, in the reserved area, an area for recording a file entry of a file described in a file identification descriptor of the directory and part or all of the file. 6. The AV data recording apparatus according to claim 5, wherein:

4. The AV data recording apparatus according to claim 3, wherein the system control unit simultaneously secures an area corresponding to the directory block group in advance.

4. The AV data recording apparatus according to claim 3, wherein the system control unit generates a new directory block group at the end of the secured directory block group when generating a new file.

In the secured directory block group, the system control unit may include an area for recording a file identification descriptor of the directory, or a file entry of the secured file and a part of or the entire file for recording the file. When any of the areas is insufficient and a new file is to be created, a new directory block group is created at the end of the reserved directory block group, and at the same time, 4. The AV data recording apparatus according to claim 3, wherein an area for recording a file entry of the file described in the file identification descriptor and a part or the whole of the file is collectively secured in the reserved area.

8. The AV data recording according to claim 7, wherein the system control unit generates a new directory block group in the area corresponding to the directory block group reserved in advance when generating a new file. apparatus.

In the secured directory block group, the system control unit may include an area for recording a file identification descriptor of the directory, or a file entry of the secured file and a part of or the entire file for recording the file. When any of the areas is insufficient and a new file is to be generated, a new directory block group is generated in the area corresponding to the directory block group reserved in advance, 8. The AV data recording device according to claim 7, wherein an area for recording a file entry of a file described in a file identification descriptor of the directory and a part or the whole of the file is collectively secured in the reserved area. .

8. The AV data recording apparatus according to claim 7, wherein the system control unit generates a new directory block group in the reserved area when generating a new file.

In the secured directory block group, the system control unit may include an area for recording a file identification descriptor of the directory, or a file entry of the secured file and a part of or the entire file for recording the file. If one of the areas is insufficient and the area corresponding to the directory block group reserved in advance is also insufficient, and a new file is to be generated, the , A new directory block group is generated, and at the same time, an area for recording the file entry of the file described in the file identification descriptor of the directory and part or all of the file is collectively secured in the reserved area. The AV data recording apparatus according to claim 7, wherein

The system control unit, when attempting to generate a new file, reserves a new reserved area in a free area of the disk, and generates a new directory block group in the reserved new reserved area. Item 7. The AV data recording device according to Item 7.

In the secured directory block group, the system control unit lacks an area for recording a file identification descriptor of the directory, and also lacks the area corresponding to the directory block group secured in advance. When there is a shortage of areas that can be secured even in the reserved area initially secured, and when a new file is to be generated, a new reserved area is secured in a free area of the disk. An area for generating a new directory block group in the reserved new reserved area, and at the same time, recording a file entry and a part or all of the file described in the file identification descriptor of the directory 8. The AV device according to claim 7, wherein the information is collectively secured in the secured new reserved area. Data recording device.

2. The AV data recording apparatus according to claim 1, wherein the system control unit controls the recording unit to record information for managing the reserved area in the reserved area.

An AV data recording method for recording AV data as a data file on a disc, comprising:
Securing a continuous area on the disk as a reserved area;
Securing a continuous area in the reserved area as a directory block;
Recording the file entry of the directory and the file identification descriptor of the directory in the directory block.

The method according to claim 17, wherein the AV data recording method includes a step of securing an area having an arbitrary integral multiple of the size of the directory block as a directory block group, wherein the size of the directory block group is a unit of error correction. AV data recording method.

In the AV data recording method, at the same time as securing the directory block group, an area for recording a file entry of a file described in a file identification descriptor of the directory and a part or the whole of the file is stored in the reserved area. 19. The AV data recording method according to claim 18, further comprising the step of:

19. The AV data recording method according to claim 18, wherein the directory block group is secured according to the type and specification of a data file to be recorded.

21. The AV data recording method according to claim 20, wherein the AV data recording method includes a step of securing, as a directory area, an area having an arbitrary integral multiple of the size of the directory block group.

In the AV data recording method, at the same time as securing the directory area, an area for recording a file entry of a file described in a file identification descriptor of the directory and a part or the whole of the file is stored in the reserved area. 22. The AV data recording method according to claim 21, comprising a step of securing.

20. The AV data recording method according to claim 19, wherein the AV data recording method includes a step of simultaneously securing an area corresponding to the directory block group in advance.

20. The AV data recording method according to claim 19, wherein, when an attempt is made to generate a new file, the AV data recording method includes a step of generating a new directory block group at the end of the reserved directory block group. .

In the AV data recording method, an area for recording a file identification descriptor of the directory or a file entry of the secured file and a part or all of the file in the secured directory block group may be used. When any of the areas is insufficient and a new file is to be generated, a new directory block group is generated at the end of the reserved directory block group, and the directory 20. The AV data recording method according to claim 19, further comprising a step of collectively securing, in the reserved area, an area for recording a file entry of the file described in the file identification descriptor and part or all of the file.

24. The AV data recording method includes a step of generating a new directory block group in the area corresponding to the directory block group reserved in advance when generating a new file. AV data recording method.

In the AV data recording method, an area for recording a file identification descriptor of the directory or a file entry of the secured file and a part or all of the file in the secured directory block group may be used. When any one of the areas is insufficient and a new file is to be generated, a new directory block group is generated in the area corresponding to the directory block group reserved in advance. 24. The method according to claim 23, further comprising the step of collectively securing, in the reserved area, an area for recording a file entry of a file described in a file identification descriptor of the directory and part or all of the file. AV data recording method.

24. The AV data recording method according to claim 23, wherein the AV data recording method includes a step of generating a new directory block group in the reserved area when a new file is to be generated.

In the AV data recording method, an area for recording a file identification descriptor of the directory or a file entry of the secured file and a part or all of the file in the secured directory block group may be used. If any of the areas is insufficient and the area corresponding to the directory block group reserved in advance is also insufficient, and when a new file is to be generated, In addition, a new directory block group is generated, and at the same time, an area for recording the file entry of the file described in the file identification descriptor of the directory and a part or the whole of the file is put together in the reserved area. 24. The AV data according to claim 23, comprising a step of securing. Recording method.

In the AV data recording method, when a new file is to be generated, a new reserved area is secured in a free area of the disk, and a new directory block group is generated in the secured new reserved area. 24. The AV data recording method according to claim 23, comprising a step.

In the AV data recording method, the area for recording the file identification descriptor of the directory is insufficient in the secured directory block group, and the area corresponding to the directory block group secured in advance is also insufficient. However, when there is a shortage of areas that can be secured in the reserved area initially secured, and when an attempt is made to generate a new file, a new reserved area is set in the free area of the disk. For generating a new directory block group in the new reserved area that has been allocated, and at the same time, recording a file entry and part or all of the file described in the file identification descriptor of the directory. And a step of collectively securing an area within the newly reserved area. AV data recording method of claim 23, wherein.

18. The AV data recording method according to claim 17, wherein the AV data recording method includes a step of recording information for managing the reserved area in the reserved area.

A disc on which AV data is recorded by the AV data recording device according to claim 1.

A disc on which AV data is recorded by the AV data recording method according to claim 17.