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

• US 20040223440A1
• Filed: 05/07/2004
• Published: 11/11/2004
• 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
• Granted Patent: US 7,663,997 B2
• Time in Patent Office: Days
• US Class Current: 369/59.25
• 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 2020/1873 Temporary defect structures for write-once discs, e.g. TDDS, TDMA or TDFL
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/218 Write-once discs
• CPC Class Codes: G11B 2220/235 Multilayer discs, i.e. multiple recording layers accessed from the same side
• CPC Class Codes: G11B 2220/237 having exactly two recording layers
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 27/22 Means responsive to presence or absence of recorded information signals
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: G11B 7/00375 arrangements for detection of physical defects, e.g. of recording layer
• CPC Class Codes: G11B 7/00736 Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information sector headers or adresses in prepits G11B7/00745; address data in track wobble G11B7/24082

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 recording medium comprising:

at least one recording layer; and

a data area on the at least one recording layer, the data area including at least one spare area and a user data area, the at least one spare area containing at least one replacement cluster, each of the at least one replacement cluster containing address information of a corresponding defective cluster.

2. The recording medium of claim 1, wherein the address information is stored in a certain area of the each replacement cluster.

3. The recording medium of claim 2, wherein the certain area is a user control data area of the each replacement cluster.

4. The recording medium of claim 2, wherein the certain area is an address area of the each replacement cluster.

5. The recording medium of claim 1, wherein the address information is a first physical sector number of the defective cluster.

6. The recording medium of claim 1, wherein the defective cluster is located within at least one of the at least one spare area and the user data area.

7. The recording medium of claim 6, further comprising:

a temporary defect management area for storing therein defect management information pertaining to the defective cluster and the replacement cluster, wherein the address information of the defective cluster is used to reconstruct lost defect management information.

8. The recording medium of claim 1, wherein the recording medium is a write once optical disc.

9. The recording medium of claim 8, wherein the write once optical disc is a Blu-ray write once disc.

10. A recording medium comprising:

at least one recording layer; and

a data area on the at least one recording layer, the data area including at least one spare area and a user data area, the at least one spare area storing replacement data, the replacement data replacing defective data;

wherein the replacement data further contain address information of corresponding defective data, and the replacement data and the defective data are stored by a predetermined unit.

11. A method of managing disc management information on a recording medium including a data area, the data area including at least one spare area and a user data area, the at least one spare area containing at least one replacement cluster, the method comprising:

(a) storing, in each of the at least one replacement cluster, address information of a corresponding defective cluster.

12. The method of claim 11, wherein in the storing step (a), the address information is stored in a certain area of the each replacement cluster.

13. The method of claim 12, wherein in the storing step (a), the certain area is a user control data area of the each replacement cluster.

14. The method of claim 12, wherein in the storing step (a), the certain area is an address area of the each replacement cluster.

15. The method of claim 11, wherein in the storing step (a), the address information is a first physical sector number of the defective cluster.

16. The method of claim 11, wherein in the storing step (a), the defective cluster is located within at least one of the at least one spare area and the user data area.

17. The method of claim 16, further comprising:

(c) storing defect management information pertaining to the defective cluster and the replacement cluster, in a temporary defect management area of the recording medium.

18. The method of claim 11, further comprising:

(d) recovering lost defect management information by using the address information of the defective cluster stored in the storing step (a).

19. The method of claim 11, wherein in the storing step (a), the recording medium is a write once optical disc.

20. The method of claim 19, wherein in the storing step (a), the write once optical disc is a Blu-ray write once disc.

21. 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 an (n−

1)th TDDS information from the recording medium;

determining if a certain area following an area indicated by the (n−

1)th TDDS information has recording;

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

reconstructing an (n)th TDDS information based on the determined position information.

22. The method of claim 21, wherein the step of determining the position information is performed using an RF signal from the certain area.

23. The method of claim 22, wherein in the reconstructing step, the (n)th 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 (n)th TDDS information.

24. The method of claim 23, wherein in the reconstructing step, the (n)th TDDS information further includes disc use state information.

25. The method of claim 21, wherein in the reproducing step, the recording medium is a write once optical disc.

26. The method of claim 25, wherein in the reproducing step, the write once optical disc is a Blu-ray write once disc.

27. 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 recording medium further including at least one spare area having at least one replacement cluster, each of the at least one replacement cluster having stored therein address information of a corresponding defective cluster and address information of the replacement cluster, the method comprising:

reproducing an (n−

1)th TDFL information from the recording medium;

reproducing the address information of the defective cluster and the address information of the replacement cluster from a certain replacement cluster; and

reconstructing an (n)th TDFL information based on the reproduced address information.

28. The method of claim 27, wherein in the step of reproducing the address information, the address information of the defective cluster is reproduced from a certain area of the certain replacement cluster.

29. The method of claim 28, wherein in the step of reproducing the address information, the certain area of the certain replacement cluster is a user control data area of the certain replacement cluster.

30. The method of claim 29, 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.

31. The method of claim 28, wherein in the step of reproducing the address information, the certain area of the certain replacement cluster is an address area of the certain replacement cluster.

32. The method of claim 31, wherein in the step of reproducing the address information, the address information of the replacement cluster is reproduced from the address area of the certain replacement cluster.

33. The method of claim 27, wherein the address information of the defective cluster is a first physical sector number of the defective cluster.

34. The method of claim 27, wherein in the step of reproducing the address information, the recording medium is a write once optical disc.

35. The method of claim 34, wherein in the step of reproducing the address information, the write once optical disc is a Blu-ray write once disc.

36. An apparatus for managing disc management information on a recording medium including a data area, the data area including at least one spare area and a user data area, the at least one spare area including at least one replacement cluster, the apparatus comprising:

a recording/reproducing unit for recording and reproducing data to and from the recording medium; and

a control unit for controlling the recording/reproducing unit to store, in each of the at least one replacement cluster, address information of a corresponding defective cluster.

37. An apparatus 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 apparatus comprising:

means for reproducing an (n−

1)th TDDS information from the recording medium;

means for determining if a certain area following an area indicated by the (n−

1)th TDDS information has recording;

means for determining position information associated with the certain area if the certain area has recording; and

means for reconstructing an (n)th TDDS information based on the determined position information.

38. An apparatus 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 recording medium further including at least one spare area having at least one replacement cluster, each of the at least one replacement cluster having stored therein address information of a corresponding defective cluster and address information of the replacement cluster, the apparatus comprising:

means for reproducing an (n−

1)th TDFL information from the recording medium;

means for reproducing the address information of the defective cluster and the address information of the replacement cluster from a certain replacement cluster; and

means for reconstructing an (n)th TDFL information based on the reproduced address information.