Recording medium, and a method and apparatus for overwriting data in the same

• US 7,613,874 B2
• Filed: 10/14/2005
• Issued: 11/03/2009
• Est. Priority Date: 10/14/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Yong Cheol
• Primary Examiner(s): Bragdon; Reginald G
• Assistant Examiner(s): Faal; Baboucarr
• Application Number:
  US11/249,710
• Publication Number:
  US 20060083130A1
• Time in Patent Office: 1,481 Days
• Field of Search: None
• US Class Current: 711/111
• CPC Class Codes: G11B 20/1883 Methods for assignment of alternate areas for defective 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 27/02 Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/327 Table of contents
• CPC Class Codes: G11B 7/006 Overwriting G11B7/0065 takes 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

A method for overwriting data in a recording medium includes the steps of assigning a plurality of record areas to the recording medium, and recording the same category data in individual record areas; and performing a replacement record operation at a specific position indicative of a closest writable area, upon receiving an overwrite command, and maintaining the same category data in the record area after performing the replacement record operation. The method for overwriting data in a recording medium includes the steps of assigning at least one Sequential Recording Range (SRR) to the recording medium, and recording data in the assigned SRR; b) upon receiving an overwrite command associated with a pre-recorded area contained in the SRR, performing a replacement record operation in a writable area contained in the SRR; and c) if the writable area is not present in the SRR, performing a replacement record operation in a writable area contained in an adjacent SRR.

Claims

1. A method for overwriting data in a recording medium having a data zone, a lead-in zone, and a lead-out zone, the data zone including a user data area and a spare area, the method comprising:

dividing the user data area into a plurality of sequential recording ranges, each sequential recording range for successively storing data therein;

recording data into at least one of the sequential recording ranges; and

performing a replacement record operation at a next writable area of an open one of the sequential recording ranges by referring to a list of open sequential recording ranges recorded in a temporary disc management area of the recording medium upon receiving an overwrite command to a closed one of the sequential recording ranges, the open sequential recording range having available writable area, and the closed sequential recording range having no available writable area.

2. The method according to claim 1, wherein if non-replaced data remains after the replacement record operation performed in the open sequential recording range, the remaining non-replaced data is recorded from a Next Writable Address (NWA) of another open one of the sequential recording ranges.

3. The method according to claim 2, further comprising:

if data recorded in the another open one of the sequential recording ranges belongs to a different category from the remaining non-replaced data closing the another open sequential recording range, and assigning a new open sequential recording range in the user data area such that the remaining non-replaced data is recorded in the new open sequential recording range.

4. The method according to claim 1, further comprising:

recording position information of an area indicated by the overwrite command and position information of a replacement record area replacing the area as a single entry in the temporary disc management area.

5. The method according to claim 1, further comprising:

recording information associated with the sequential recording ranges in the recording medium as sequential recording range information into the temporary disc management area.

6. The method according to claim 5, wherein the sequential recording range information includes the list of open sequential recording ranges.

7. The method according to claim 1, wherein data recorded in each sequential recording range is classified into one of file system data, user data, and file system mirror data.

8. The method according to claim 1, wherein each of the sequential recording ranges stores therein same category data.

9. An apparatus for recording/reproducing data in/from a recording medium having a data zone, a lead-in zone, and a lead-out zone, the data zone including a user data area and a spare area, the apparatus comprising:

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

a data processor configured to receive a signal from the pickup and restore the received signal, or modulate a signal to be recorded into a signal to be recorded in the recording medium; and

a servo configured to control the pickup to read a signal from the recording medium;

a memory configured to temporarily store information and data; and

a microprocessor configured to control the pickup, the data processor, the servo, and the memory, the microprocessor being further configured to divide the user data area into a plurality of sequential recording ranges, each sequential recording range for successively storing data therein, wherein

the microprocessor is further configured to control the pickup, data processor, the servo, and the memory so as to record data into at least one of the sequential recording ranges, and the microprocessor is further configured to control the pickup, data processor, the servo, and the memory so as to perform a replacement record operation at a next writable area of an open one of the sequential recording ranges by referring to a list of open sequential recording ranges recorded in a temporary disc management area of the recording medium upon receiving an overwrite command to a closed one of the sequential recording ranges, the open sequential recording range having available writable area, and the closed sequential recording range having no available writable area.

10. The apparatus according to claim 9, wherein if non-replaced data remains after the replacement record operation performed in the open one of the sequential recording ranges, the microprocessor is further configured to control the pickup, the data processor, the servo, and the memory so as to record the remaining non-replaced data starting from a Next Writable Address (NWA) of another open one of the sequential recording ranges.

11. The apparatus according to claim 10, wherein if data recorded in the another open one of the sequential recording ranges belongs to a different category from the remaining non-replaced data, the microprocessor is further configured to control the pickup, the data processor, the servo, and the memory so as to close the another open one of the sequential recording ranges and assign a new open one of the sequential recording ranges to the user data area such that the remaining non-replaced data is recorded in the new open one of the sequential recording ranges.

12. The apparatus according to claim 9, wherein the microprocessor is configured to control the pickup, the data processor, the servo, and the memory so as to record information associated with the sequential recording ranges in the recording medium as sequential recording range information into the temporary disc management area.

13. The apparatus according to claim 12, wherein the sequential recording range information includes the list of open sequential recording range.

14. The apparatus according to claim 9, wherein data recorded in each sequential recording range is classified into one of file system data, user data, and file system mirror data.

15. The method according to claim 9, wherein each of the sequential recording ranges stores therein same category data.

16. A recording medium comprising:

a lead-in zone and a lead-out zone; and

a data zone including a user data area and a spare area, the user data area divided into a plurality of sequential recording ranges, each sequential recording range for successively storing data therein; and

a temporary disc management area storing a list of open sequential recording ranges,

wherein the data zone includes an open one of the sequential recording ranges having a next writable area at which a replacement record operation is performed by referring to the list of open sequential recording ranges upon receiving an overwrite command to a closed one of the sequential recording ranges, the open sequential recording range having available writable area, and the closed sequential recording range having no writable area.

17. The recording medium according to claim 16, wherein if non-replaced data remains after the replacement record operation performed in the one of the open sequential recording ranges, the remaining non-replaced data is recorded from a Next Writable Address (NWA) of another open one of the sequential recording ranges.

18. The recording medium according to claim 17, wherein if data recorded in the another open one of the sequential recording ranges belongs to a different type from the remaining non-replaced data, the another open one of the sequential recording ranges is closed and a new open one of the sequential recording ranges is assigned to the user data area such that the remaining non-replaced data is recorded in the new open one of the sequential recording ranges.

19. The recording medium according to claim 16, wherein data recorded in each sequential recording range is classified into one of file system data, user data, and file system mirror data.

20. The recording medium according to claim 16, wherein each of the sequential recording ranges stores therein same category of data.