Information-recording/reproduction apparatus, information-recording/reproduction methods, program-storing medium and programs

• US 20050105430A1
• Filed: 11/16/2004
• Published: 05/19/2005
• Est. Priority Date: 11/17/2003
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Takashima, Yoshikazu
• Granted Patent: US 8,037,099 B2
• Time in Patent Office: Days
• US Class Current: 369/53.200
• CPC Class Codes: G11B 20/1217 on discs
• CPC Class Codes: G11B 2020/1288 Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
• CPC Class Codes: G11B 2220/213 Read-only discs
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: G11B 27/36 Monitoring, i.e. supervising the progress of recording or reproducing for digital recording G11B20/00 and s.gr.; for monitoring, testing or measuring of TV recorders of the type covered by H04N5/76 and subgroups, see H04N17/06

Abstract

An MIA containing file-system information is updated and a recording/reproduction block 53 records Main MIA containing the updated information in block B″1 in a free area on a recording medium. In addition, Main G1, Res.G1, Main G2, Res.G2 and G3, which form a group of files each serving as an object of group management, are recorded in block B″2. Furthermore, Res.MIA containing a backup of the file-system information is recorded in block B″3. By recording information in this way, the recording area of the recording medium can be used effectively. The present invention can be applied to an information-recording/reproduction apparatus for recording information serving as an object of the group management on the recording medium.

Claims

1. An information-recording/reproduction apparatus comprising:

a recording unit for recording a file onto a recording medium; and

a control unit for controlling said recording unit to group files on the basis of attribute information and record said files in group units onto said recording medium wherein said attribute information includes the use frequency of each file, the size of each file and data indicating whether or not each file is used in a specific application program.

2. An information-recording/reproduction apparatus according to claim 1 wherein said control unit recognizes an allocation class of a file as said attribute information of said file, controls said recording unit to group files on the basis of allocation classes of said files and record said files onto said recording medium in group units.

3. An information-recording/reproduction apparatus according to claim 1 wherein, when a file is added or updated, said control unit controls said recording unit to newly record specific files recorded on said recording medium in group units collectively in another area on said recording medium where said specific files are all files pertaining to a group including said added or updated file.

4. An information-recording/reproduction apparatus according to claim 1 wherein, when a file is added or updated, said control unit controls said recording unit to newly record specific files recorded on said recording medium in group units collectively in another area on said recording medium where said specific files are all files pertaining to a plurality of groups including a group including said added or updated file.

5. An information-recording/reproduction apparatus according to claim 1 wherein, when file-system information of said recording medium is changed, said control unit controls said recording unit to newly record specific files recorded on said recording medium in group units and said file-system information collectively in another area on said recording medium where said specific files are all files pertaining to at least a group.

6. An information-recording/reproduction apparatus according to claim 5 wherein, said information-recording/reproduction apparatus further including a read unit for reading out file-system information recorded on said recording medium in group units from said recording medium wherein, when an operation to read out re-recorded file-system information ends in a failure, said read unit reads out other file-system information corresponding to said unreadable file-system information from an area for storing said other file-system information before being re-recorded as said unreadable file-system information.

7. An information-recording/reproduction apparatus according to claim 1 wherein, when a file is added or updated, after a predetermined command is issued, said control unit controls said recording unit to newly record specific files recorded on said recording medium in group units collectively in another area on said recording medium where said specific files are all files pertaining to a group including said added or updated file.

8. An information-recording/reproduction apparatus according to claim 1 wherein said control unit controls said recording unit to group files on the basis of attribute information and record said files in group units collectively in a contiguous area of said recording medium where said attribute information includes the use frequency of each file, the size of each file and data indicating whether or not each file is used in a specific application program.

9. An information-recording/reproduction method comprising:

a recording step of recording a file onto a recording medium; and

a control step of controlling processing carried out at said recording step to group files on the basis of attribute information and record said files in group units onto said recording medium wherein said attribute information includes the use frequency of each file, the size of each file and data indicating whether or not each file is used in a specific application program.

10. A program-storing medium for recording a program including the step of executing control to group files on the basis of attribute information and record said files in group units onto a recording medium wherein said attribute information includes said use frequency of each file, said size of each file and data indicating whether or not each file is used in a specific application program.

11. A program to be executed by a computer to carry out processing including the step of executing control to group files on the basis of attribute information and record said files in group units onto a recording medium wherein said attribute information includes said use frequency of each file, said size of each file and data indicating whether or not each file is used in a specific application program.