Write-once optical disc and method for managing spare area thereof

• US 7,499,383 B2
• Filed: 02/20/2004
• Issued: 03/03/2009
• Est. Priority Date: 02/21/2003
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Sung Dae, Park, Yong Cheol
• Primary Examiner(s): Young; Wayne R
• Assistant Examiner(s): CHOW, VAN NGUYEN
• Application Number:
  US10/781,828
• Publication Number:
  US 20040165495A1
• Time in Patent Office: 1,838 Days
• Field of Search: None
• US Class Current: 369/47.14
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• CPC Class Codes: G11B 2007/0013 for carriers having multiple discrete layers
• CPC Class Codes: G11B 2020/1288 Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
• 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 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 2220/2579 HD-DVDs [high definition DVDs]; AODs [advanced optical discs]
• 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
• CPC Class Codes: G11B 7/24038 Multiple laminated recording layers

Abstract

Disclosed is a write-once optical disc and method for managing a spare area thereof, the write-once optical disc possibly having a temporary defect management area within one or more spare areas. The method includes the steps of: allocating one or more spare areas including the temporary defect management area at an initial status of the optical disc; and during use of the optical disc, expanding the spare area allocated including the temporary defect management area to set a new spare area. By employing the above optical disc and method, it becomes possible to establish unified regulations on the structures of the spare area and temporary defect management area applicable to the write-once optical disc, so that usage efficiency of the optical disc can be improved.

Claims

1. A method for managing a recording medium having a data area, the data area including a spare area and a user data area, sizes of the spare area and the user data area being determined at an initial status of the recording medium, the method comprising:

determining whether an initial size of spare area is reduced, and whether an initial size of the user data area is expanded in correspondence with a reduction in the size of the spare area, during use of the recording medium; and

recording position information on the recording medium, the position information indicating a changed position of the user data area corresponding to a determined expansion of the size of the user data area.

2. The method of claim 1, wherein the spare area includes a replacement area and a temporary defect management area, the replacement area storing data written defective area of the user data area and the temporary defect management area storing temporary defect management information.

3. The method of claim 1, wherein the position information is last LSN (logical sector number) information.

4. The method of claim 1, wherein the spare area has a maximum size at the initial status.

5. A recording medium, comprising:

a data area including a spare area and a user data area, sizes of the spare area and the user data area being determined at an initial status of the recording medium, wherein during use of the recording medium, a size of the spare area is reduced, and a size of the user data area is expanded in correspondence with a reduction in size of the spare area; and

a management area storing position information indicating a changed position of the user data area corresponding to a determined expansion of the size of the user data area.

6. The recording medium of claim 5, wherein the spare area includes a replacement area and a temporary defect management area, the replacement area configured to manage defective area of the user data area and the temporary defect management area configured to store temporary defect management information.

7. The recording medium of claim 5, further comprising:

a lead-in area configured to store position information, the position information indicating a changed position of the user data area corresponding to an expansion of the size of the user data area.

8. The recording medium of claim 5, wherein the position information is last LSN (logical sector number) information.

9. An apparatus configured to manage a recording medium having a data area, comprising:

a controller configured to

determine sizes of a spare area and a user data area, the spare area and the user data area allocated within the data area at an initial status of recording medium,

determine whether the initial size of spare area is reduced, and whether the initial size of the user data area is expanded, during use of the recording medium, and

generate a control command to record position information on the recording medium, the position information indicating a changed position of the user data area corresponding to a determined expansion of the size of the user data area.

10. The apparatus of claim 9, wherein the spare area includes a replacement area and a temporary defect management area, and the controller is configured to manage the defective area of the user data using the replacement area, and record temporary defect management information in the temporary defect management area.

11. The apparatus of claim 9, further comprising:

a pickup, operably coupled to the controller, configured to record the position information to the recording medium.

12. The apparatus of claim 11, wherein the position information is last LSN (logical sector number) information.