Method and apparatus for overwriting data on recording-medium and the recording medium

• US 7,936,648 B2
• Filed: 02/27/2007
• Issued: 05/03/2011
• Est. Priority Date: 06/23/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Sung Wan, Park, Yong Cheol
• Primary Examiner(s): Feild; Joseph H
• Assistant Examiner(s): GUPTA, PARUL H
• Application Number:
  US11/711,019
• Publication Number:
  US 20070159949A1
• Time in Patent Office: 1,526 Days
• Field of Search: None
• US Class Current: 369/47.13
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective areas
• CPC Class Codes: G11B 2020/10907 using pseudo-overwriting, i.e. virtually or logically overwriting data on WORM media by remapping recorded blocks to alternate areas
• 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 27/036 Insert-editing
• CPC Class Codes: G11B 7/0045 Recording G11B7/006, G11B7/0065 take precedence
• 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

In one embodiment, the recording medium includes a user data area on which one or more recording ranges are allocated and a management area. The method of recording on the recording medium includes receiving an overwriting command to record data on a recorded area of a recording range. Each recording range is one of an open recording range having a recordable position and a closed recording range not having a recordable position. An open recording range is selected fro recording the data from the one or more open recording ranges on the user data area, and the data is recorded starting from the recordable position of the selected open recording range.

Claims

1. A method of recording data on a recording medium including a user data area, on which one or more recording ranges are allocated, and a management area including management information, the method comprising:

receiving an overwriting command to record the data on a recorded area of a recording range, each recording range is one of an open recording range having a recordable position and a closed recording range having no recordable position;

selecting an open recording range based on a list of the open recording ranges included in the management information, for recording the data, wherein the management information further includes information indicating a number of open recording ranges within the recording medium, and the list includes one or more identification numbers, each identification number corresponding to each open recording range, and the one or more identification numbers are aligned by descending order in the list; and

recording the data starting from the recordable position of the selected open recording range,

wherein the recordable position is determined by checking management information including a last recorded address (LRA) of the selected open recording range from the management area and determining the recordable position as a position of first sub-recording unit of an unrecorded recording unit following the LRA.

2. The method of claim 1, wherein the data is recorded sequentially within the selected open recording range.

3. The method of claim 1, further comprising:

recording entry information in the management area, the entry information indicates a start address of the recorded area to which the overwriting command is made and a start address of the recordable position, from which the data is recorded, of the selected open recording range.

4. The method of claim 1, wherein the selecting step selects the recording range including the recorded area as the open recording range for recording the data if the recording range including the recorded area is an open recording range.

5. The method of claim 3, wherein the selecting step selects another open recording range for recording the data if the recording range including the recorded area has no unrecorded recording unit.

6. The method of claim 5, wherein the another open recording range is an open recording range nearest to the recording range including the recorded area.

7. The method of claim 3, wherein the selecting step selects another open recording range for recording the data if the recording range including the recorded area does not include an unrecorded area large enough for the data.

8. The method of claim 1, wherein the selecting step selects a first open recording range from the open recording ranges.

9. The method of claim 1, further comprising:

determining a command as the overwriting command if a recording position indicated by the command is located before the recordable position of the recording range including the recorded area.

10. An apparatus for recording data on a recording medium including a user data area, on which one or more recording ranges are allocated, and a management area including management information, the apparatus comprising:

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

a controller, operably coupled to the pickup, configured to receive an overwriting command to record the data on a recorded area of a recording range, each recording range is one of an open recording range having a recordable position and a closed recording range having no recordable position, the controller further configured to select an open recording range based on a list of the open recording ranges included in the management information, for recording the data, and the controller further configured to control the pickup to record the data starting from the recordable position of the selected open recording range,

wherein the management information further includes information indicating a number of open recording ranges within the recording medium, and the list includes one or more identification numbers, each identification number corresponding to each open recording range, and the one or more identification numbers are aligned by descending order in the list, and

wherein the controller determines the recordable position by checking management information including a last recorded address (LRA) of the selected open recording range from the management area and determining the recordable position as a position of first sub-recording unit of an unrecorded recording unit following the LRA.

11. The apparatus of claim 10, wherein the controller controls the pickup to record the data sequentially within the selected open recording range.

12. The apparatus of claim 10, wherein the controller selects the recording range including the recorded area as the open recording range for recording the data if the recording range including the recorded area is an open recording range.

13. The apparatus of claim 10, wherein the controller selects another open recording range for recording the data if the recording range including the recorded area has no unrecorded recording unit.

14. The apparatus of claim 10, wherein the controls determines a command as the overwriting command if a recording position indicated by the command is located before the recordable position of the recording range including the recorded area.

15. A computer-readable medium comprising:

a user data area on which one or more recording ranges are allocated, each recording range is one of an open recording range having a recordable position and a closed recording range having no recordable position; and

a management area on which management information for the recording ranges is recorded, wherein the management information includes a list of the open recording ranges allocated on the user data area and an open recording range for recording data is selected based on the list of the open recording ranges included in the management information if an overwriting command to record the data is made to a recorded area of a recording range on the user data area, and the data is recorded starting from the recordable position of the selected open recording range,

wherein the management information further includes information indicating a number of open recording ranges within the recording medium, and the list includes one or more identification numbers, each identification number corresponding to each open recording range, and the one or more identification numbers are aligned by descending order in the list, and

wherein the management information further includes a last recorded address (LRA) of the each open recording range and the recordable position is determined as a position of first sub-recording unit of an unrecorded recording unit following the LRA.

16. The computer-readable medium of claim 15, wherein the recording range to which the command is made is selected as the open recording range for recording the data if the recording range to which the command is made is an open recording range.

17. The computer-readable medium of claim 16, wherein another open recording range is selected if the recording range to which the command is made has no unrecorded recording unit.

18. The computer-readable medium of claim 16, wherein the management area further includes entry information which indicates a start address of the recorded area to which the command is made and a start address of the recordable position, from which the data is recorded, of the selected open recording range.