Recording medium, and method and apparatus for recording defect management information on the recording medium

• US 7,742,372 B2
• Filed: 11/13/2006
• Issued: 06/22/2010
• Est. Priority Date: 11/25/2005
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kwon, Hyug Jin, Kim, Jung Sup
• Primary Examiner(s): Tran; Thang V
• Application Number:
  US11/598,041
• Publication Number:
  US 20070121460A1
• Time in Patent Office: 1,317 Days
• Field of Search: 369/47.14, 369 5315- 5317
• US Class Current: 369/53.17
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• CPC Class Codes: G11B 2020/1823 wherein a flag is set when errors are detected or qualified
• CPC Class Codes: G11B 2020/1826 wherein a defect list or error map is generated
• CPC Class Codes: G11B 2020/1893 using linear replacement to relocate data from a defective block to a non-contiguous spare area, e.g. with a secondary defect list [SDL]
• CPC Class Codes: G11B 2220/20 Disc-shaped record carriers
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 7/0079 Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas

Abstract

A recording medium, and a method and apparatus for recording defect management information on the recording medium are disclosed. The method for recording defect management information of a recording medium includes recording a defect entry on the recording medium, wherein the defect entry includes a first field that can identify a defect entry type, a second field recording position information of a defect area within a user data area, and a third field recording position information of a replacement area within a spare area, and recording position information corresponding to the second field and/or the third field in accordance with the defect entry type decided by the first field, wherein, in case of a defect entry type having no corresponding position information, the corresponding field is set to zero (0).

Claims

1. A method for recording information for managing a defective area in a recording medium, comprising:

generating defect management information including at least one defect entry for managing one or more defective areas within a user data area of the recording medium, the defect entry including status information for identifying a type of the corresponding defect entry, a first field for indicating a position of a defective area within the user data area and a second field for indicating a position of a replacement area within a spare area for replacing the defective area, wherein if the status information indicates that the corresponding defect entry is unusable, the first field is set to zero and the second field indicates an address of a defective cluster within the spare area; and

recording, by a recording apparatus, the defect management information in at least one of inner and outer zones of the recording medium.

2. The method of claim 1, wherein the status information further indicates whether or not the defective area is replaced with the replacement area.

3. The method of claim 1, wherein the second field further indicates a length of an unusable portion within the spare area.

4. The method of claim 1, wherein the defect entry further includes second status information for indicating a status of data recorded in the replacement area.

5. The method of claim 4, wherein the second status information indicates a predetermined value, if the status information indicates that the defective area is not replaced with the replacement area.

6. The method of claim 1, further comprising:

sorting the defect entries by at least one of values of the status information, the first field and the second field.

7. The method of claim 6, wherein the defect entries are sorted by type of the defect entry and by value of the first field within a same type of the defect entry.

8. An apparatus for recording information for managing a defective area in a recording medium, comprising:

a pickup configured to record/reproduce data on/from the recording medium; and

a controller, operatively coupled to the pickup, configured to control the pickup to record defect management information in at least one of inner and outer zones of the recording medium, the defect management information including at least one defect entry for managing one or more defective areas within a user data area of the recording medium, the defect entry including status information for identifying a type of the corresponding defect entry, a first field for indicating a position of a defective area within a user data area and a second field for indicating a position of a replacement area within the spare area for replacing the defective area, wherein if the status information indicates that the corresponding defect entry is unusable, the first field is set to zero and the second field indicates an address of a defective cluster within the spare area.

9. The apparatus of claim 8, wherein the status information further indicates whether or not the defective area is replaced with the replacement area.

10. The apparatus of claim 8, wherein the second field further indicates a length of an unusable portion within the spare area.

11. The apparatus of claim 8, wherein the controller is configured to control the pickup to further record second status information for indicating a status of data recorded in the replacement area.

12. The apparatus of claim 8, wherein the controller is configured to control the pickup to record the second status information with a predetermined value, if the status information indicates that the defective area is not replaced with the replacement area.

13. The apparatus of claim 8, wherein the controller is configured to sort the defect entries by at least one of values of the status information, the first field and the second field.

14. The apparatus of claim 13, wherein the controller is configured to sort the defect entries by type of the defect entry and by value of the first field within a same type of the defect entry.

15. A recording medium having a data structure for managing one of recording and reproducing by an apparatus, comprising:

a data area for storing a user data area and a spare area; and

a control data area for storing defect management information for managing one of recording and reproducing by the apparatus, the defect management information including at least one defect entry for managing one or more defetive areas within a user data area of the recording medium, the defect entry including status information for identifying a type of the corresponding defect entry, a first field for indicating a position of a defective area within the user data area and a second field for indicating a position of a replacement area within a spare area for replacing the defective area, wherein if the status information indicates that the corresponding defect entry is unusable, the first field is set to zero and the second field indicates an address of a defective cluster within the spare area, and wherein the control data area is included in at least one of inner and outer zones of the recording medium.

16. The recording medium of claim 15, wherein the status information further indicates whether or not the defective area is replaced with the replacement area.

17. The recording medium of claim 15, wherein the second field further indicates a length of an unusable portion within the spare area.

18. The recording medium of claim 15, wherein the defect entry further includes second status information for indicating a status of data recorded in the replacement area.

19. The recording medium of claim 18, wherein the second status information indicates a predetermined value, if the status information indicates that the defective area is not replaced with the replacement area.

20. The recording medium of claim 15, wherein the defect entries are sorted by at least one of values of the status information, the first field and the second field.

21. The recording medium of claim 20, wherein the defect entries are sorted by type of the defect entry and by value of the first field within a same type of the defect entry.