Write once optical disc, and method and apparatus for recovering disc management information from the write once optical disc

• US 7,684,293 B2
• Filed: 05/10/2004
• Issued: 03/23/2010
• Est. Priority Date: 05/09/2003
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Yong Cheol
• Primary Examiner(s): Klimowicz; William J
• Assistant Examiner(s): DANIELSEN, NATHAN ANDREW
• Application Number:
  US10/841,516
• Publication Number:
  US 20050025003A1
• Time in Patent Office: 2,143 Days
• Field of Search: 369/47.1, 369/47.14, 369 5313- 5317
• US Class Current: 369/47.14
• CPC Class Codes: G11B 20/10009 Improvement or modification of read or write signals
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• CPC Class Codes: G11B 2220/218 Write-once discs

Abstract

A write once optical recording medium and a method and apparatus for storing and recovering defect management information to and from the write once optical recording medium are provided. The recording medium includes at least one recording layer, and a data area on the recording layer. The data area includes at least one spare area and a user data area. The spare area contains at least one replacement cluster, each of the replacement clusters storing therein address information of a corresponding defective cluster.

Claims

1. A method for recovering management information from a recording medium, the recording medium including a temporary defect management area for recording therein temporary disc definition structure (TDDS) information and temporary defect list (TDFL) information, the method comprising:

reproducing TDDS information recorded in the recording medium;

determining if a certain area following an area indicated by the reproduced TDDS information has recorded data;

determining position information associated with the certain area if the certain area has recorded data; and

reconstructing lost TDDS information based on the determined position information.

2. The method of claim 1, wherein the step of determining the position information is performed using an RF signal from the certain area.

3. The method of claim 2, wherein in the reconstructing step, the lost TDDS information includes at least one of the following:

a recording mode flag,

first address information of latest TDFL information,

last address information of used optimum power calibration information,

first address information of a usable spare cluster, and first address information of the lost TDDS information.

4. The method of claim 3, wherein in the reconstructing step, the lost TDDS information further includes disc use state information.

5. The method of claim 1, wherein in the reproducing step, the recording medium is a write once optical disc.

6. The method of claim 5, wherein in the reproducing step, the write once optical disc is a Blu-ray write once disc.

7. A method for recovering management information from a recording medium, the recording medium including a lead-in area and a data area having a spare area and a user data area, the spare area including one or more replacement clusters, and at least one of the lead-in area and the spare area including a temporary defect management area for storing therein temporary disc definition structure (TDDS) information and temporary defect list (TDFL) information, the method comprising:

reproducing TDFL information in the temporary defect management area;

reproducing, from a replacement cluster the address information of a defective cluster replaced by the replacement cluster and the address information of the replacement cluster; and

reconstructing lost TDFL information based on the reproduced address information.

8. The method of claim 7, wherein in the step of reproducing the address information, the address information of the defective cluster is reproduced from a user control data area of the replacement cluster.

9. The method of claim 7, wherein in the step of reproducing the address information, the address information of the replacement cluster is reproduced from an address area of the certain replacement cluster.

10. The method of claim 7, wherein in the step of reproducing the address information, the address information of the defective cluster is reproduced from an address area of the replacement cluster.

11. The method of claim 7, wherein the address information of the defective cluster is a first physical sector number of the defective cluster.

12. The method of claim 7, wherein the recording medium is a write once optical disc.

13. The method of claim 12, wherein the write once optical disc is a Blu-ray write once disc.

14. The method of claim 7, wherein the step of reconstructing the lost TDFL information comprising:

comparing the reproduced address information with related entry information contained in the reproduced TDFL information.

15. The method of claim 14, wherein the step of reconstructing the lost TDFL information comprising:

if the reproduced address information is discrepant with the related entry information, adding entry information having the reproduced address information to the reproduced TDFL information.

16. The method of claim 7, wherein the step of reproducing the address information comprises reproducing address information of each defective cluster and address information of each replacement cluster from all the replacement clusters and the step of reconstructing the lost TDFL information comprises comparing the reproduced address information of the each defective cluster and the replacement cluster with related entry information contained in the reproduced TDFL information.

17. The method of claim 7, further comprising:

reconstructing the lost TDFL information to include information on all defective areas existing on the data area.

18. An apparatus for recovering management information from a recording medium, the recording medium including a lead-in area and a data area having a spare area and a user data area, the spare area including one or more replacement clusters, and at least one of the lead-in area and the spare area including a temporary defect management area for storing therein temporary disc definition structure (TDDS) information and temporary defect list (TDFL) information the apparatus comprising:

an optical pick-up configured to record/reproduce data onto/from the recording medium; and

a microcomputer operatively coupled to the optical pick-up and configured to

control the optical pick-up to reproduce TDFL information recorded in the temporary defect management area,

control the optical pick-up to reproduce, from a replacement cluster, address information of a defective cluster and address information of the replacement cluster, and

reconstruct lost TDFL information based on the reproduced address information.

19. The apparatus of claim 18, wherein the microcomputer is configured to reconstruct the lost TDFL information by comparing the reproduced address information with related entry information contained in the reproduced TDFL information.

20. The apparatus of claim 19, wherein the microcomputer is configured to reconstruct the lost TDFL information by adding entry information having the reproduced address information to the reproduced TDFL information if the reproduced address information is discrepant with the related entry information.

21. The apparatus of claim 18, wherein the address information of the defective cluster is reproduced from an address area of the replacement cluster.

22. The apparatus of claim 18, wherein the address information of the defective cluster is a physical sector number of the defective cluster.

23. The apparatus of claim 18, wherein the microcomputer is configured to control the optical pick-up to reproduce address information of each defective cluster and address information of each replacement cluster from all the replacement clusters and compare the reproduced address information of the each defective cluster and the replacement cluster with related entry information contained in the reproduced TDFL information.

24. The apparatus of claim 18, wherein the microcomputer is configured to reconstruct the lost TDFL information to include information on all defective areas existing on the data area.

25. A computer readable recording medium, comprising:

a lead-in area; and

a data area having a spare area and a user data area, wherein;

the spare area includes one or more replacement clusters, and at least one of the lead-in area and the spare area including a temporary defect management area, and

the temporary defect management area stores therein temporary disc definition structure (TDDS) information and temporary defect list (TDFL) information,

wherein the temporary defect management area includes;

TDFL information recorded therein, and

TDFL information reconstructed based on the recorded TDFL information and address information of a replacement cluster and a defective cluster replaced by the replacement cluster, the address information contained in the replacement cluster.

26. The computer readable recording medium of claim 25, wherein the reconstructed TDFL information is reconstructed by comparing the address information with related entry information contained in the recorded TDFL information.

27. The computer readable recording medium of claim 26, wherein the reconstructed TDFL information is reconstructed by adding entry information having the address information to the recorded TDFL information if the address information is discrepant with the related entry information contained in the recorded TDFL information.

28. The computer readable recording medium of claim 25, wherein the address information of the defective cluster is located in an address area of the replacement cluster.

29. The computer readable recording medium of claim 25, wherein the address information of the defective cluster is a physical sector number of the defective cluster.

30. The computer readable recording medium of claim 25, wherein the reconstructed TDFL is reconstructed by comparing all the replacement clusters address information of each defective cluster and address information of each replacement cluster contained in all the replacement clusters with related entry information contained in the reproduced TDFL information.

31. The computer readable recording medium of claim 25, wherein the reconstructed TDFL information includes information on all defective areas existing on the data area.