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Data treating method adopting error-correcting code and data processing equipment

A technology of data processing and error correction codes, which is applied in the direction of electrical digital data processing, error correction/detection using block codes, error correction/detection using linear codes, etc., and can solve problems such as unrecoverable original data

Inactive Publication Date: 2005-04-27
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Therefore, it is not possible to correctly restore the original data when a storage error has occurred

Method used

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  • Data treating method adopting error-correcting code and data processing equipment
  • Data treating method adopting error-correcting code and data processing equipment
  • Data treating method adopting error-correcting code and data processing equipment

Examples

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Embodiment Construction

[0045] Various embodiments of the present invention are described below with reference to the drawings.

[0046] Now using DVD (Digital Versatile Disc) by reference Figure 1 to Figure 8 The configuration of the error correction code adding circuit and the error correction circuit in the data recording and reproducing section will be described.

[0047] First refer to Figure 1 to Figure 6 The structure of data recorded on DVD will be described.

[0048] figure 1 Shows the sequence of data processing to obtain physical segments in a DVD. Each segment is called a "data segment", a "record segment" or a "physical segment" according to a stage of signal processing. Such as figure 2 As shown in , a data segment includes 2048 bytes of main data, 4 bytes of identification data (ID), 2 bytes of ID error detection code (IED), (code for detecting errors in ID). 6 bytes of copyright management information (CPR-MAI) and 4 bytes of error detection signal (EDC), (a signal for detect...

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PUM

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Abstract

When an error-correcting code is created for the data stored in a memory and added to the data, even if an error occurs in the data on the memory, the adverse effect of the error will be eliminated. In the present invention, when the data is stored in the memory, an error-correcting code PI is created beforehand using another memory, such as an S-RAM. The error-correcting code PI, together with the data, is written into the memory. After 16 sectors of data and PI have been stored, an error-correcting code PO is created for the data and PI and added to them. When the data is read from the memory, a PI correcting process is carried out each time a PI series is read out. This makes it possible to restore the original data, even if the data is destroyed (or an error occurs) on the memory.

Description

technical field [0001] The present invention relates to an efficient error correction code generation method for recording video data, audio data or computer data on a medium such as an optical disk or magnetic disk or reproducing data recorded on the medium. [0002] The present invention also relates to an efficient error correction code generation method when sending or receiving video data or the like. [0003] The present invention also relates to a recording device, a reproducing device and a receiving device using the error correction code generation method. [0004] The invention is particularly characterized by an error correction method using a buffer memory in implementing the error correction. Background technique [0005] When video data, audio data, computer data, etc. are recorded on an optical disc or magnetic disk, error correction codes are added to data blocks. In this error correction code addition process, a data block is tempor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/18H03M13/03H03M13/15H03M13/29
CPCH03M13/2909G11B20/18H03M13/2903H03M13/29G11B2020/1062H03M13/03G06F11/1076H03M13/1515G06F11/1012H03M13/15
Inventor 小竹晃一石泽良之小岛正
Owner KK TOSHIBA
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