File management apparatus and method, program therefore, and recording medium

• US 20060195486A1
• Filed: 02/23/2006
• Published: 08/31/2006
• Est. Priority Date: 02/25/2005
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Date, Osamu, Yoshida, Haruo, Hirabayashi, Mitsuhiro, Ohno, Masayoshi, Kashiwagi, Shigeru
• Granted Patent: US 7,882,161 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/322 used signal is digitally coded
• 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

The present invention provides a file management apparatus for managing files, recorded on a recording medium, on the basis of an index file including management information about the files, the apparatus including: a management status information holding unit for holding management status information indicative of a management status of the files in the index file; a recording status detecting unit for detecting a recording status of the files recorded on the recording medium; and an inconsistency detecting unit for detecting an inconsistency between the management status of the files in the index file and the recording status of the files recorded on the recording medium on the basis of the management status information and the recording status detected by the recording status detecting unit.

Claims

1. A file management apparatus for managing files, recorded on a recording medium, on the basis of an index file including management information about the respective files, the apparatus comprising:

management status information holding means for holding management status information indicative of a management status of the files in the index file;

recording status detecting means for detecting a recording status of the files recorded on the recording medium; and

inconsistency detecting means for detecting an inconsistency between the management status of the files in the index file and the recording status of the files recorded on the recording medium on the basis of the management status information and the recording status detected by the recording status detecting means.

2. The apparatus according to claim 1, wherein the management status information holding means holds the management status information about the files every directory, the files being recorded in a directory structure on the recording medium.

3. The apparatus according to claim 2, wherein the management status information includes information regarding the number of files included in each directory.

4. The apparatus according to claim 2, wherein the management status information includes information regarding the modification times of the files included in each directory.

5. The apparatus according to claim 4, wherein the information regarding the modification times of the files is a checksum for each directory, the checksum being generated on the basis of the modification times of the files included in each directory.

6. The apparatus according to claim 2, wherein the management status information includes information regarding the names of the files included in each directory.

7. The apparatus according to claim 6, wherein the information regarding the file names is a checksum for each directory, the checksum being generated on the basis of the names of the files included in each directory.

8. The apparatus according to claim 2, wherein the management status information includes information regarding the creation time of the most recently created file in each directory.

9. The apparatus according to claim 2, wherein the management status information includes information regarding the modification time of the last modified file in each directory.

10. The apparatus according to claim 1, further comprising:

management status information generating means for generating the management status information from the management information.

11. The apparatus according to claim 10, wherein the management status information generating means generates management status information about the files every directory, the files being recorded in a directory structure on the recording medium.

12. The apparatus according to claim 10, wherein the management information is generated from the files recorded on the recording medium.

13. The apparatus according to claim 12, wherein the management status information is generated from the management information.

14. The apparatus according to claim 12, wherein the management status information is generated from the management information included in the index file.

17. The apparatus according to claim 12, wherein the management status information includes at least two of information regarding the number of files managed in the index file, information regarding the names of the files, and information regarding the modification times of the respective files.

15. A file management apparatus for managing files, recorded on a recording medium, on the basis of an index file including management information about the files, the apparatus comprising:

management status information holding means for holding at least two kinds of management status information units indicative of a management status of the files in the index file;

recording status detecting means for detecting at least two kinds of recording statuses of the files recorded on the recording medium so that the recording statuses correspond to the at least two kinds of management status information units, respectively; and

inconsistency detecting means for detecting an inconsistency between the management information included in the index file and the recording status of the files recorded on the recording medium on the basis of each management status information unit and the corresponding recording status detected by the recording status detecting means.

16. The apparatus according to claim 15, wherein the management status information holding means holds the management status information about the files every directory, the files being recorded in a directory structure on the recording medium.

18. A file management method for managing files, recorded on a recording medium, on the basis of an index file including management information about the files, the method comprising the steps of;

previously holding management status information indicative of a management status of the files in the index file;

detecting a recording status of the files recorded on the recording medium; and

detecting an inconsistency between the management status of the files in the index file and the recording status of the files recorded on the recording medium on the basis of the management status information and the detected recording status.

19. A program for managing files, recorded on a recording medium, on the basis of an index file including management information about the files, the program allowing a computer to execute a process comprising the steps of:

previously holding management status information indicative of a management status of the files in the index file;

detecting a recording status of the files recorded on the recording medium; and

detecting an inconsistency between the management status of the files in the index file and the recording status of the files recorded on the recording medium on the basis of the management status information and the detected recording status.

20. A recording medium storing an index file including management information about files recorded thereon, wherein management status information about the files is recorded on the recording medium, the management status information being used to determine whether a management status of the files in the index file is inconsistent with a recording status of the files recorded on the recording medium.

21. A file management apparatus for managing files, recorded on a recording medium, on the basis of an index file including management information about the files, the apparatus comprising:

a management status information holding unit for holding management status information indicative of a management status of the files in the index file;

a recording status detecting unit for detecting a recording status of the files recorded on the recording medium; and

an inconsistency detecting unit for detecting an inconsistency between the management status of the files in the index file and the recording status of the files recorded on the recording medium on the basis of the management status information and the recording status detected by the recording status detecting unit.

22. A file management apparatus for managing files, recorded on a recording medium, on the basis of an index file including management information about the files, the apparatus comprising:

a management status information holding unit for holding at least two kinds of management status information units indicative of a management status of the files in the index file;

a recording status detecting unit for detecting at least two kinds of recording statuses of the files recorded on the recording medium so that the recording statuses correspond to the at least two kinds of management status information units, respectively; and

an inconsistency detecting unit for detecting an inconsistency between the management information included in the index file and the recording status of the files recorded on the recording medium on the basis of each management status information unit and the corresponding recording status detected by the recording status detecting unit.