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Data replacement processing method

A processing method and data replacement technology, applied in data recording, recording signal processing, data buffer arrangement, etc., can solve problems such as low efficiency of optical drives, and achieve the effect of improving performance

Inactive Publication Date: 2008-12-31
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention provides a data replacement processing method to solve the technical problem that may lead to low efficiency of the optical drive in the prior art

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Embodiment Construction

[0017] The present invention will be described in detail below with reference to the drawings.

[0018] figure 1 is a flowchart showing the method provided by the present invention. The method starts at step S10. During the process of the optical drive reading or verifying the written data from the optical disc, the data obtained from the optical disc is cached and stored in the main cache memory (not shown), as shown in step S11. The buffered data is then decoded (step S12). In the present invention, as shown in step S13, the decoding operation will be monitored. For example, data blocks to be decoded are monitored. In fact, no matter what, during the whole process of the method, the decoding monitoring process will continue to be executed. If a data block such as a defect is found, that is, a so-called "defect hit" (step S14), the cache operation and decoding operation will not be interrupted. Cache operations and decode operations continue without interruption. There...

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Abstract

The invention relates to a data replacement processing method. In the present invention, buffering and decoding are not interrupted when a data block to be replaced is found. The data block to be replaced can be a defect or a remapped block. The data block to be replaced is not processed until it is requested to be transferred. When the data block to be replaced is to be transferred, transferring is stopped and the data block to be replaced is processed. Therefore, efficiency of the optical disc drive can be promoted since interruption number of the buffering and decoding is decreased. In addition, the optical disc will not execute redundant processing for data blocks to be replaced which are not requested to be transferred.

Description

【Technical field】 [0001] The present invention relates to data processing of optical discs, in particular to the processing of data replacement for optical discs with defects or remapped blocks. 【Background technique】 [0002] In the process of processing the data of the optical disc, it is sometimes necessary to replace the data at the original address with data at other addresses. For example, a replacement process is necessary for remapped ECC blocks in skip recording mode for dual-layer-R discs. In addition, in order to replace the defect, replacement content is usually recorded in the spare area of ​​the optical disc. [0003] In the process of reading or verifying the data written in the optical disc, the data obtained from the optical disc is buffered and stored in the main buffer memory of the optical drive, and then the data in the buffer area is decoded. Finally, the decoded data is transferred to the host when requested by the host. A common approach is to stop...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B20/10G11B20/18
CPCG11B20/10527G11B20/1883G11B2020/1062G11B2020/10759G11B2220/20G11B2220/2537
Inventor 汪佐霖江俊颖李国章
Owner MEDIATEK INC