发明授权
- 专利标题: Code error correction method
- 专利标题(中): 代码纠错方法
-
申请号: US695067申请日: 1985-01-25
-
公开(公告)号: US4627058A公开(公告)日: 1986-12-02
- 发明人: Yoshiaki Moriyama
- 申请人: Yoshiaki Moriyama
- 申请人地址: JPX Tokyo
- 专利权人: Pioneer Electronic Corporation
- 当前专利权人: Pioneer Electronic Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX59-014039 19840127; JPX59-014040 19840127
- 主分类号: H03M13/29
- IPC分类号: H03M13/29 ; G06F11/10
摘要:
An improved method of code error correction is disclosed, for detection and correction of errors in data words or check words of a block of data after transmission-reception or recording-reproduction of the data. The method is of the type in which the data block is divided into three sets of sub-blocks, divided along three different array directions, with check words being assigned to each sub-block before transmission or recording based on specific computations (e.g. in accordance with Reed-Solomon code), and is characterized in that a stage of error detection processing applied to one specific set of sub-blocks invariably succeeds each stage of error correction processing applied to the other two sets of sub-blocks and in that three possible states of each error flag can result from correction processing, to respectively indicate a high probability, a low probability, or an intermediate degree of probability of errors being present in the corresponding word.