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Defect management method and device for optical recording medium

A defect management, optical recording technology, applied in optical recording/reproducing/erasing methods, digital recording/reproducing, etc., can solve problems such as insufficient BDWO standards

Inactive Publication Date: 2008-04-23
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In any case, the management of defective areas is key during data recording, especially for high-density DVDs such as Bluray discs, but the current BD WO standard is not sufficient

Method used

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  • Defect management method and device for optical recording medium
  • Defect management method and device for optical recording medium
  • Defect management method and device for optical recording medium

Examples

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Embodiment Construction

[0028] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. In these figures, similar elements are indicated with the same or similar reference numerals.

[0029] 1 shows a recording area of ​​a write-once optical disc such as a Blu-ray disc to illustrate a defect management method for an optical recording medium according to the present invention, wherein defect management information is recorded in a Temporary Defect Management Area (TDMA). For each layer of the optical disc recording medium, the optical disc is provided with a plurality of such TDMAs, wherein each TDMA occupies at least one cluster.

[0030] Each TDMA includes Temporary Disc Definition Structure (TDDS) information and a Temporary Defect List, or TDFL, which are usually recorded in series, but a detailed description and discussion of the TDFL is omitted for the sake of the present invention. In addition to continu...

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Abstract

A method for defect management for an optical recording medium uses a plurality of temporary defect management areas (TDMAs), so that defect management information can be recorded in prescribed areas of an optical recording medium, such as a write-once Blu-ray disc, to include information specifying the location of a last defect management area among the temporary defect management areas, to represent the most recently recorded area and therefore contain the most current information. Defect management information is recorded (updated) in one of two temporary defect management areas, with disc-in-use defect management information being recorded in one TDMA and disc-eject defect management information being recorded in another TDMA, thus recording the last defect management information of an in-use disc when the disc is ejected.

Description

technical field [0001] The present invention relates to an optical recording medium, and more particularly to a defect management method for an optical recording medium and an optical recording medium using the method, wherein a plurality of temporary defect management areas are used for defect management. Background technique [0002] Optical discs are widely used as recording media for long-term storage of large amounts of data. Such recording media can be classified into two categories including rewritable discs and write-once type discs. Where data is recorded using write-once type discs, only one write operation can be performed to any given area, rewritable discs offer much greater flexibility, especially in the management of defective areas. A defective area is caused by a manufacturing defect in the optical recording medium or subsequent damage to the surface of the optical recording medium, which makes it impossible to record data on one or more clusters. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/004G11B20/10
Inventor 朴容彻金成大
Owner LG ELECTRONICS INC