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Data management method for processing decoding error of CD readback data and CD driver therefor

A technology for data management and decoding errors, applied in the field of decoding errors, can solve the problems of instability, complicated judgment mechanism, and increased complexity of optical drives, and achieves the effect of reducing complexity and improving efficiency

Inactive Publication Date: 2008-08-13
MEDIATEK HEFEI
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  • Application Information

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Problems solved by technology

[0010] To sum up, since the decoding pointer DP does not fixedly point to the start or end address of a data block, but can point to any data segment in the data block, once a decoding error occurs At this time, the existing data management method for dealing with decoding errors needs to properly adjust the buffer pointer BP and the decoding pointer DP according to different situations. Due to the complicated judgment mechanism, the complexity of the overall optical drive 100 will eventually increase, and the optical drive 100 The performance of dealing with decoding errors will also be affected to a certain extent without significant

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  • Data management method for processing decoding error of CD readback data and CD driver therefor
  • Data management method for processing decoding error of CD readback data and CD driver therefor
  • Data management method for processing decoding error of CD readback data and CD driver therefor

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Embodiment Construction

[0036] see Figure 6 , Figure 6 It is a schematic diagram of an embodiment of the optical drive 600 of the present invention. The function and operation of CD-ROM 600 are similar to figure 1 The optical drive 100 shown can also handle decoding errors that occur when reading back data from an optical disc (eg, DVD) 602 . In this embodiment, the optical drive 600 includes a storage device 610 (eg DRAM), a control circuit 620 and a decoding circuit 630 . In this embodiment, the storage device 610 is used as a ring buffer to store the read-back data read by the optical disc 602. However, please note that the ring buffer is only one embodiment of the storage device 610. For the present invention, the storage device 610 is not limited to the ring buffer structure. Such as Figure 6 As shown, the storage space of the storage device 610 can be regarded as divided into multiple data blocks BK 1 ~BK n , where each data block contains multiple data segments SC 1 ~ SC m. For Di...

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Abstract

The invention relates to a data manage method for processing the decode error when reading data and a relative CD-ROM driver, wherein said method comprises: providing a buffer pointer and a decode pointer; using the buffer pointer to instruct one address written by the non-decoded read data; said address is one absolute address or one divided block of the storage device; using the decode pointer to instruct the initial address of one data block in the read data decode; and when one special data section of said decoded data block has decode error, refreshing the buffer pointer to instruct the address written by the non-decode read data relative to the decode pointer, to read the non-decode read back again.

Description

technical field [0001] The present invention relates to a method and device for dealing with decoding errors, in particular to a data management method and an optical drive for dealing with decoding errors in read-back data of an optical disc. Background technique [0002] The reading of a traditional optical disc is based on a data sector (sector) as the decoding unit, so when a decoding error occurs and the undecoded data on the optical disc must be re-read, it is only necessary to re-read the data sector where the error occurred. And it only needs to re-decode the data segment, which is quite simple no matter whether it is implemented by hardware or software. But in digital versatile disc (digital versatile disc, DVD) or next-generation Blu-ray disc (Blu-ray disc, BD) or high-definition disc (High-definition DVD, HD-DVD), the data is not in a data area A segment is the decoding unit, but a data block (block) composed of several data segments is used as the decoding unit....

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/10G06F12/00
Inventor 吴元丁陈世新陈炳盛
Owner MEDIATEK HEFEI
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