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

• US 7,502,288 B2
• Filed: 01/30/2007
• Issued: 03/10/2009
• 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): Klimowicz; William J
• Assistant Examiner(s): GUPTA, PARUL H
• Application Number:
  US11/699,474
• Publication Number:
  US 20070121431A1
• Time in Patent Office: 770 Days
• Field of Search: None
• US Class Current: 369/47.14
• 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 includes receiving a command to record the data on a closed recording range. The closed recording range has no recordable position. An open recording range having a recordable position is selected from 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, the method comprising:

receiving a command to record the data on a closed recording range, the closed recording range having no recordable position;

selecting an open recording range having a recordable position from one or more open recording ranges on the user data area; and

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

wherein each recording range allocated on the user data area is identified by a sequential identification number, and the selecting step further including

checking management information recorded on the management area, the management information including a list of the one or more open recording ranges, the list having the identification number of each open recording range, and

selecting the open recording range based on the list of the management information

wherein an identification number of a recording range that becomes closed in response to the recording is removed from the list of the one or more open recording ranges.

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

3. The method of claim 1, further comprising:

checking the last recorded position of the selected open recording range.

4. The method of claim 3, wherein the recordable position of the selected open recording range indicates the first sub-recording unit of the first recording unit following the last recorded position of the selected open recording range.

5. The method of claim 1, further comprising:

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

6. The method of claim 1, wherein the selected open recording range is an open recording range nearest to the closed recording range.

7. The method of claim 1, wherein the selecting step selects the first open recording range from the one or more open recording ranges.

8. The method of claim 1, wherein the recording step is continued in another open recording range if the selected open recording range does not include an unrecorded area large enough for the data.

9. 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, the apparatus comprising:

an optical pickup configured to record the data on the recording medium; and

a controller, operably coupled to the pickup, configured to receive a command to record the data on a closed recording range, the closed recording range having no recordable position, the controller configured to select an open recording range having a recordable position from one or more open recording ranges on the user data area, and the controller configured to control the pickup to record the data starting from the recordable position of the selected open recording ranges,

wherein each recording range allocated on the user data area is identified by sequential identification number, and the controller further configured to check management information recorded on the management area, the management information including a list of the one or more open recording ranges, the list having the identification number of each open recording range, and the controller further configured to select the open recording range based on the list of the management information;

management information, and the controller further configured to cause an identification number of a recording range that becomes closed in response to recording data to be removed from the list of the one or more open recording ranges.

10. The apparatus of claim 9, wherein the controller controls the pickup to record the data sequentially from the recordable position of the selected open recording range.

11. The apparatus of claim 9, wherein the controller checks the last recorded position of the selected open recording range from management information recorded on the management area, and controls the pickup to record the data from the first sub-recording unit of the first unrecorded recording unit following the last recorded position.

12. The apparatus of claim 9, wherein the controller selects an open recording range nearest to the closed recording range.

13. The apparatus of claim 9, wherein the controller selects the first open recording range from the one or more open recording ranges.

14. 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 an open recording range is selected from one or more open recording ranges on the user data area if a command to record data is made to a closed recording range on the user data area, and the data is recorded starting from the recordable position of the selected open recording ranges, and

wherein each recording range allocated on the user data area is identified by a sequential identification number, and the management information includes a list of the one or more open recording ranges, the list having the identification number of each open recording range, and being updated to remove an identification number of a recording range that becomes closed, and the identification number of each open recording range being used to select the corresponding open recording range to record data.

15. The computer-readable medium of 14, wherein the management information includes the last recorded position of each recording range allocated on the user data area.

16. The computer-readable medium of 14, wherein the recordable position of the selected open recording range indicates the first sub-recording unit of the first unrecorded recording unit following the last recorded position of the selected open recording range.

17. The computer-readable medium of 14, wherein the management area further includes entry information which indicates a start position of an recording area specified by the command and a start position of the recordable position, from which the data is recorded, of the selected recording range.