Write-once optical disc, and method and apparatus for recording/reproducing management information on/from optical disc

• US 7,898,918 B2
• Filed: 07/20/2009
• Issued: 03/01/2011
• Est. Priority Date: 08/05/2003
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Yong Cheol
• Primary Examiner(s): Hindi; Nabil Z
• Application Number:
  US12/506,196
• Publication Number:
  US 20100020655A1
• Time in Patent Office: 589 Days
• Field of Search: 369/59.25, 369/53.12, 369/53.13, 369/53.14, 369/275.3, 369/53.1, 369/53.15, 369/53.17, 369/47.27
• US Class Current: 369/53.15
• CPC Class Codes: G11B 20/1217 on discs
• 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

Abstract

A write-once optical disc and a method and apparatus for recording management information on the optical disc are provided. The optical disc includes at least one recording layer and a plurality of temporary defect management areas (TDMAs) on the at least one recording layer. At least one of the TDMAs includes an indicator indicating which one of the TDMAs has an in-use status.

Claims

1. An apparatus of recording management information on a recording medium including at least one temporary management area, the apparatus comprising:

a record/playback unit configured to

record temporary management information in the at least one temporary management area before the recording medium is finalized, the at least one temporary management area being used in a designated order, and

create an access indicator corresponding to the temporary management area in one of the at least one temporary management area in order to indicate which temporary management area is currently in use, the one of the at least one temporary management area sequentially including one or more access indicators in the direction of descending address.

2. The apparatus of claim 1, wherein the record/playback unit is configured to record the temporary management information in a first temporary management area allocated to a lead-in area of the recording medium and in a second temporary management area allocated to a data area of the recording medium.

3. The apparatus of claim 2, wherein the record/playback unit is configured to create the access indicator in an access indicator area allocated to the front of the first temporary management area.

4. The apparatus of claim 3, wherein the record/playback unit is configured to firstly create the access indicator in a cluster of highest address number of the access indicator area.

5. The apparatus of claim 3, wherein a recording direction of the first temporary management area is different from a recording direction of the access indicator area.

6. An apparatus for reproducing management information from a recording medium including at least one temporary management area, the apparatus comprising:

a control unit configured to

identify a temporary management area which is currently in use based on an access indicator, the access indicator corresponding to the temporary management area, one of the at least one temporary management area sequentially including one or more access indicators in the direction of descending address;

control to read temporary management information from the temporary management area; and

control to reproduce data from the recording medium based on the read temporary management area.

7. The apparatus of claim 6, wherein the control unit is configured to identify based on the access indicators whether a first temporary management area allocated to a lead-in area of the recording medium and a second temporary management area allocated to a data area of the recording medium are currently in use.

8. The apparatus of claim 7, wherein the control unit is configured to read the access indicator from an access indicator area allocated to the front of the first temporary management area.

9. The apparatus of claim 8, wherein the control unit is configured to read the firstly-created access indicator from a cluster of highest address number of the access indicator area.

10. The apparatus of claim 7, wherein a recording direction of the first temporary.management area is different from a recording direction of the access indicator area.

11. The apparatus of claim 7, wherein the temporary management area identified currently in use corresponds to an access indicator lastly created in the access indicator area.