Method and apparatus for recording data on write-once recording medium

• US 8,149,664 B2
• Filed: 03/18/2005
• Issued: 04/03/2012
• Est. Priority Date: 03/19/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Sung Wan
• Primary Examiner(s): Young, Wayne
• Assistant Examiner(s): Pendleton, Dionne
• Application Number:
  US11/083,312
• Publication Number:
  US 20050207305A1
• Time in Patent Office: 2,573 Days
• Field of Search: 369/53.29, 369/53.17, 369/47.14, 369/44.32, 369/44.33, 369/53.12, 369/53.42, 369/280, 369 3007- 3009, 369/30.37, 369/47.22
• US Class Current: 369/53.17
• 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 2020/1826 wherein a defect list or error map is generated
• CPC Class Codes: G11B 2020/1873 Temporary defect structures for write-once discs, e.g. TDDS, TDMA or TDFL
• CPC Class Codes: G11B 2020/1893 using linear replacement to relocate data from a defective block to a non-contiguous spare area, e.g. with a secondary defect list [SDL]
• CPC Class Codes: G11B 2020/1896 using skip or slip replacement to relocate data from a defective block to the next usable block, e.g. with a primary defect list [PDL]
• 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

Abstract

A method and apparatus for recording data on a write-once recording medium are disclosed. In the write-once recording medium, the method includes, when a defect area is detected in the recording medium, deciding a replacement recording method for replacing the defect area, when the detected defect area is replacement recorded in a spare area, recording a position information of the defect area and a position information of the spare area in a temporary management area as a defect management information, and when the detected defect area is skipped and the data is replacement recorded in a next consecutive area, an information indicating that the skipped area is the defect area is recorded in a temporary management area as a defect management information. Thus, the write-once recording medium may be managed with more efficiency and data may be efficiently recorded on the recording medium.

Claims

1. A method for managing a defect area detected while recording data on a write-once recording medium, the recording medium having a data zone and a non-data zone, the data zone having inner and outer spare areas and a user data area, the method comprising:

when data is recorded in non real-time, performing one of a first skip replacement and a linear replacement, the first skip replacement skips the defect area and continuously records data starting from a cluster subsequent to the defect area and the linear replacement replaces the defect area with a replacement area of the spare area, and recording defect management information including position information of the defect area and position information of the replacement area onto temporary management areas allocated to the non-data zone and the inner and outer spare areas, two of the temporary management areas being located on an inner side of the inner spare area and an outer side of the outer spare area, respectively, wherein the defect management information of the linear replacement is recorded as a re-allocatable defect (RAD) type if the defect area is a single cluster, and recorded as a consecutive re-allocatable defect (CRD) type if the defect area is a plurality of consecutive clusters, and the defect management information of the first skip replacement is recorded as a non-reallocatable defect (NRD) type if the defect area is a single cluster, and recorded as a consecutive non-reallocatable defect (CND) type if the defect area is a plurality of consecutive clusters; and

when data is recorded in real-time, performing one of a second skip replacement and a stream recording, the second skip replacement skips multiple consecutive clusters and records data starting from a cluster subsequent to the multiple consecutive clusters, and the stream recording ignores the defect area and records data continuously on the defect area without an allocation of a replacement area, wherein the second skip replacement further includes recording defect management information including position information of the defect area onto the temporary management area, wherein the defect management information of the second skip replacement is recorded as a consecutive non-reallocatable defect (CND) type.

2. The method of claim 1, wherein, in the second skip replacement, the number of clusters to be skipped is set to a relatively large area.

3. The method of claim 1, further comprising:

allocating the temporary management area of a predetermined size to the non-data zone; and

allocating the temporary management areas of a non-predetermined size of between 0 and a predetermined maximum value, to the inner and outer spare areas, respectively.

4. An apparatus for managing a defect area detected while recording data on a write-once recording medium, the recording medium having a data zone and a non-data zone, the data zone having inner and outer spare areas and a user data area, the apparatus comprising:

a pick-up configured to directly record data on the recording medium;

a servo configured to control operation of the pick-up so as to record a signal on the recording medium;

a data processor configured to modulate a signal to be recorded to the recording medium; and

a microcomputer configured to control the pick-up, the servo and the data processor such that when data is recorded in non real-time, one of a first skip replacement and a linear replacement is performed so that the first skip replacement skips the defect area and continuously records data starting from a cluster subsequent to the defect area and the linear replacement replaces the defect area with a replacement area of the spare area, and records defect management information having position information of the defect area and position information of the replacement area recorded onto temporary management areas allocated to the non-data zone and the inner and outer spare areas, two of the temporary management areas being located on an inner side of the inner spare area and an outer side of the outer spare area, respectively, wherein the defect management information of the linear replacement is recorded as a re-allocatable defect (RAD) type if the defect area is a single cluster, and recorded as a consecutive re-allocatable defect (CRD) type if the defect area is a plurality of consecutive clusters, and the defect management information of the first skip replacement is recorded as a non-reallocatable defect (NRD) type if the defect area is a single cluster, and recorded as a consecutive non-reallocatable defect (CND) type if the defect area is a plurality of consecutive clusters; and

when data is recorded in real-time, one of a second skip replacement and a stream recording is performed, the second skip replacement skips multiple consecutive clusters and records data starting from a cluster subsequent to the multiple consecutive clusters, and the stream recording ignores the defect area and records data continuously on the defect area without an allocation of a replacement area, wherein the second skip replacement further includes recording defect management information having position information of the defect area onto the temporary management area, wherein the defect management information of the second skip replacement is recorded as a consecutive non-reallocatable defect (CND) type.

5. The apparatus of claim 4, wherein in the second skip replacement, the number of clusters to be skipped is set to a relatively large area.

6. A method for managing a defective area in a recording medium, the recording medium having a data zone and a non-data zone, the data zone having inner and outer spare areas and a user data area, the method comprising:

writing data according to whether the data is real-time data or non real-time data, wherein the data is written in a replacement area of the spare area in place of the defective area if the data is the non real-time data, and wherein the defective area is skipped and the data is written starting from a next available area of the user data area if the data is the real-time data; and

recording defect management information in one of defect management areas within the inner and outer spare areas in response to the writing, the defect management areas being located on an inner side of the inner spare area and an outer side of the outer spare area, respectively, wherein the defect management information includes first position information for specifying a position of the defective area, second position information for specifying a position of the replacement area and status information for indicating whether the defective area is a single cluster or multiple consecutive clusters and whether the defective area is replaced with the replacement area or not,

wherein the defect management areas are used one by one in a designated order to record the defect management information, and

wherein other defect management area is not used until one of the defect management areas is full.

7. The method of claim 6, wherein if the data is the real-time data, the first position information specifies the position of the defective area, the second position information specifies no position of replacement area and the status information indicates that the defective area is not replaced with the replacement area.

8. The method of claim 6, wherein if the data is the non real-time data, the first position information specifies the position of the defective area, the second position information specifies the position of the corresponding replacement area and the status information indicates that the defective area is replaced with the replacement area.

9. The method of claim 6, further comprising:

allocating the defect management area of a predetermined size to the inner side of the inner spare area; and

allocating the defect management area of a non-predetermined size of between 0 and a predetermined maximum value to the outer side of the outer spare area.

10. An apparatus for managing a defective area in a recording medium, the recording medium having a data zone and a non-data zone, the data zone having inner and outer spare areas and a user data area, the apparatus comprising:

a pickup configured to read/write data from/on the recording medium; and

a controller operably connected to the pickup and configured to control the pickup to write data according to whether the data is real-time data or non real-time data, wherein the controller is configured to control the pickup to write the data in a replacement area of the spare area in place of the defective area if the data is the non real-time data, and wherein the controller is configured to control the pickup to skip the defective area and to write the data starting from a next available area of the user data area if the data is the real-time data, and the controller configured to control the pickup to record defect management information in one of defect management areas within the inner and outer spare areas in response to the writing of the data, the defect management areas being located on an inner side of the inner spare area and an outer side of the outer spare area, respectively, wherein the defect management information includes first position information for specifying a position of the defective area, second position information for specifying a position of the replacement area and status information for indicating whether the defective area is a single cluster or multiple consecutive clusters and whether the defective area is replaced with the replacement area or not,

wherein the defect management areas are used one by one in a designated order to record the defect management information, and

wherein other defect management area is not used until one of the defect management areas is full.

11. The apparatus of claim 10, wherein the controller is configured to control the pickup to allocate the defect management area of a predetermined size to the inner side of the inner spare area and allocate the defect management area of a non-predetermined size of between 0 and a predetermined maximum value to the outer side of the outer spare area.