Write-once type optical disc, and method and apparatus for managing defective areas on write-once type optical disc using TDMA information
First Claim
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1. An apparatus for managing a defective area on a recording medium of writable once type, the recording medium including a lead-in area having a defect management area and a data area having a user data area and a spare area, the apparatus comprising:
- a pickup configured to write/reproduce data on/from the recording medium;
a servo configured to control the pickup to maintain a distance between an objective lens of the pickup and the recording medium, and to track a relevant track of the recording medium;
a data processor configured to process and supply input data to the pickup for writing, or process data read from the recoding medium;
a memory configured to store information associated with the recording medium; and
a controller configured to operatively coupled to above components—
the pickup, the servo, the data processor and the memory, and control the components so that the apparatuswrites, onto a temporary management area located in the lead-in area, management information pertaining to the defective area and access information for accessing the management information, where the management information includes location information indicating locations of the defective area and a replacement area corresponding to the defective area and included in the spare area, and the access information includes location information indicating a location of the management information written in the temporary management area;
performs no more defect management operation when the temporary management area is full; and
when finalizing the recording medium, writes onto the defect management area the management and access information written in the temporary management area, wherein when writing the access information onto the defect management area the apparatus modifies the access information to include location information indicating a location of the management information written in the defect management area instead of the location of the management information written in the temporary management area.
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Abstract
A recording medium of writable once type, and a method and apparatus for managing a defective area on the recording medium are provided. The method includes detecting an existence of a defective area within a data area of the recording medium once data are written onto the data area in a data writing operation; writing data written in the defective area onto a spare area of the data area if the defective area is detected; writing temporary management information pertaining to the defective area, onto a temporary management area on the recording medium; and writing access information for accessing the temporary management information, onto a reserved area on the recording medium.
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Citations
28 Claims
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1. An apparatus for managing a defective area on a recording medium of writable once type, the recording medium including a lead-in area having a defect management area and a data area having a user data area and a spare area, the apparatus comprising:
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a pickup configured to write/reproduce data on/from the recording medium; a servo configured to control the pickup to maintain a distance between an objective lens of the pickup and the recording medium, and to track a relevant track of the recording medium; a data processor configured to process and supply input data to the pickup for writing, or process data read from the recoding medium; a memory configured to store information associated with the recording medium; and a controller configured to operatively coupled to above components—
the pickup, the servo, the data processor and the memory, and control the components so that the apparatuswrites, onto a temporary management area located in the lead-in area, management information pertaining to the defective area and access information for accessing the management information, where the management information includes location information indicating locations of the defective area and a replacement area corresponding to the defective area and included in the spare area, and the access information includes location information indicating a location of the management information written in the temporary management area; performs no more defect management operation when the temporary management area is full; and when finalizing the recording medium, writes onto the defect management area the management and access information written in the temporary management area, wherein when writing the access information onto the defect management area the apparatus modifies the access information to include location information indicating a location of the management information written in the defect management area instead of the location of the management information written in the temporary management area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for managing a defective area on a recording medium of writable once type, the recording medium including a lead-in area having a defect management area and a data area having a user data area and a spare area, the apparatus comprising:
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a pickup configured to record data on the recording medium; and a controller operatively coupled to the pickup and configured to control the pickup, where the controller is configured to control the pickup to write, onto a temporary management area located in the recording medium, management information pertaining to the defective area and access information accessing the management information, where the management information includes location information indicating locations of the defective area and a replacement area corresponding to the defective area, the replacement area included in the spare area, and the access information includes location information indicating a location of the management information written in the temporary management area; control the pickup to perform no more defect management operation when the temporary management area is full; and when finalizing the recording medium, control the pickup to write onto the defect management area the management and access information written in the temporary management area, wherein when writing the access information written in the temporary management area onto the defect management area the controller is configured to modify the access information written in the temporary management area to include location information indicating a location of the management information written in the defect management area instead of the location of the management information written in the temporary management area. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A recording medium of writable once type, comprising:
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first and second recording areas, each of the first and second recording areas including a lead-in area having a defect management area and a data area having a user data area and a spare area; a temporary management area including first and second temporary management areas storing therein management information pertaining to a defective area and access information for accessing the management information until finalizing the recording medium, where the management information includes location information indicating locations of the defective area and a replacement area corresponding to the defective area, the replacement area included in the spare area, and the access information includes location information indicating a location of the management information stored in the temporary management area, wherein when the temporary management area is full, no more defect management operation is performed; and the defect management area for storing management and access information written thereto from the temporary management area when finalizing the recording medium, where the access information stored in the defect management area includes location information indicating a location of the management information stored in the defect management area other than the temporary management area. - View Dependent Claims (18, 19, 20, 21, 22)
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23. An apparatus for reproducing data from a recording medium of writable once type, the recording medium including a lead-in area having defect management area and a data area having a user data area and a spare area, the apparatus comprising:
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a pickup configured to reproduce data from the recording medium; a servo configured to control the pickup to maintain a distance between an objective lens of the pickup and the recording medium, and to track a relevant track of the recording medium; a data processor configured to process and supply input data to the pickup for writing, or process data read from the recoding medium; a memory configured to store information associated with the recording medium; and a controller configured to operatively coupled to above components—
the pickup, the servo, the data processor and the memory, and control the components so that before the recording medium is finalized, the apparatus reproduces access information from a temporary management area located in the lead-in area of the recoding medium for accessing management information written in the temporary management area, the access information including location information indicating a location of the management information written in the temporary management area;
reproduces the management information from the temporary management area based on the access information; and
reproduces, instead of data written in a defective area, data written in a replacement area included in the spare area based on the management information reproduced from the temporary management area; andthe controller configured to control the components so that after the recording medium has been finalized, the apparatus reproduces modified access information written in the defect management area, the modified access information modified from the access information written in the temporary management area and written into the defect management area when finalizing the recording medium, the modified access information including location information indicating a location of management information written into the defect management area from the temporary management area when finalizing the recording medium;
reproduces the management information written in the defect management area based on the modified access information; and
reproduces, instead of the data written in the defective area, the data written in the replacement area based on the management information reproduced from the defect management area. - View Dependent Claims (24, 25)
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26. An apparatus for reproducing data from a recording medium of writable once type, the recording medium including a lead-in area having a defect management area and a data area having a user data area and a spare area, the apparatus comprising:
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a pickup configured to reproduce data from the recording medium; and a controller operatively coupled to the pickup and configured to control the pickup, where the controller is configured to before the recording medium is finalized, control the pickup to reproduce access information from a temporary management area located in the lead-in area of the recoding medium for accessing management information written in the temporary management area, the access information including location information indicating a location of the management information written in the temporary management area;
control the pickup to reproduce the management information from the temporary management area based on the access information; and
control the pickup to reproduce, instead of data written in a defective area, data written in a replacement area included in the spare area based on the management information reproduced from the temporary management area; and
after the recording medium has been finalized, control the pickup to reproduce modified access information written in the defect management area, the modified access information modified from the access information written in the temporary management area and written into the defect management area when finalizing the recording medium, the modified access information including location information indicating a location of management information written into the defect management area from the temporary management area when finalizing the recording medium;
control the pickup to reproduce the management information written in the defect management area; and
control the pickup to reproduce, instead of the data written in the defective area, the data written in the replacement area based on the management information reproduced from the defect management area. - View Dependent Claims (27, 28)
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Specification
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Current AssigneeLG Electronics, Inc. (LG Corporation)
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Original AssigneeLG Electronics, Inc. (LG Corporation)
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InventorsKim, Sung Dae, Park, Yong Cheol
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Primary Examiner(s)SIMPSON, LIXI CHOW
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Application NumberUS12/346,549Publication NumberTime in Patent Office1,029 DaysField of SearchNoneUS Class Current369/47.14CPC Class CodesG11B 20/10009 Improvement or modification...G11B 20/1883 Methods for assignment of a...G11B 20/22 for reducing distortionsG11B 2020/1288 Formatting by padding empty...G11B 2020/1873 Temporary defect structures...G11B 2220/20 Disc-shaped record carriersG11B 2220/2541 Blu-ray discs; Blue laser D...
