Method and apparatus of data error correction and method and apparatus for playing CD

An error correction method and data error technology, applied in the field of optical storage, can solve problems such as inability to find, inability to continue decoding, and unusable data, so as to improve the accuracy of data error correction and avoid hindering the playback of optical discs

Inactive Publication Date: 2008-06-25
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the key data below the macroblock data layer has serious uncorrectable errors, it may make the decoding process unable to continue, resulting in interruption of disc playback
In addition, the number of errors in the data below the macroblock data layer may not be very large, but relatively concentrated in a specific data segment, making the data in this segment unusable, and the result will also cause the disc playback to be interrupted
In a navigation data packet, a key guide address information error may also result in failure to find the corresponding information and unable to continue decoding

Method used

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  • Method and apparatus of data error correction and method and apparatus for playing CD
  • Method and apparatus of data error correction and method and apparatus for playing CD
  • Method and apparatus of data error correction and method and apparatus for playing CD

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Embodiment Construction

[0022] FIG. 1 is a flowchart of a data error correction method according to an embodiment of the present invention. The description of FIG. 1 takes the error correction of data read from a DVD disc as an example. First, error detection information corresponding to an ECC data block read from a DVD disc is acquired (step S120). According to the prior art, the error correction of the data by the front end of the optical disc player is performed in units of ECC data blocks according to the RS error correction method, and the obtained error detection information is used to judge whether the corresponding ECC data is "BAD" or "OK". , to determine whether a data block is reserved or discarded, and then the corresponding error detection information will be discarded. In the present invention, error detection information corresponding to an ECC block determined to be "OK" is retained.

[0023] Then, according to the error detection information, determine the type of data error in a ...

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Abstract

The invention provides a data error-check method and a device, as well as a disk playing method and playing device. The error-check method is used for checking the error of data accessed from a disk, comprising the steps as follow: the error-check information of one data block relative to the accessed data is obtained; the type of data error of the data flow unit from the data block is determined according to the error-check information; and whether the data flow unit is used for playing the disc is judged according to the type of data error and the preset reference type of data error. The error-check method also further comprises the steps as follow: the data which is used in the disc playing referred to the data flow unit is abandoned if the data flow unit is not kept. The invention further checks errors from the data through the error-check information of the abandoned data block in the prior art so as to eliminate the data error which can interrupt the playing of the disc.

Description

technical field [0001] The invention relates to the technical field of optical storage, in particular to a data error correction method and device, and also relates to an optical disc playback method and device. Background technique [0002] In the field of optical storage technology, different optical disc physical formats and logical formats emerge in an endless stream, with different functions. Huge optical disc storage capacity, flexible user interface, strong network link function and smooth and clear playback effect have become the distinctive features of the development of optical storage. [0003] Along with the rapid development of optical storage technology, people's requirements for the refinement of optical storage technology continue to increase, one of which is to correct optical disc data errors to improve the playback effect. In the process of CD playback, data reading errors are almost inevitable, and differences in scientific research and production levels...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B20/18
Inventor 王进张大庆
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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