发明公开
EP0405099A2 Method and apparatus for providing error correction to symbol level codes
失效
Verfahren undGerätmit Block-Kode-kodierter Fehlerkorrektur。
- 专利标题： Method and apparatus for providing error correction to symbol level codes
- 专利标题（中）： Verfahren undGerätmit Block-Kode-kodierter Fehlerkorrektur。
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申请号： EP90108765.0申请日： 1990-05-10
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公开(公告)号： EP0405099A2公开(公告)日： 1991-01-02
- 发明人: Bossen, Douglas Craig , Chen, Chin-Long , Hsiao, My-Yue
- 申请人： International Business Machines Corporation
- 申请人地址： Old Orchard Road Armonk, N.Y. 10504 US
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： Old Orchard Road Armonk, N.Y. 10504 US
- 代理机构： Jost, Ottokarl, Dipl.-Ing.
- 优先权： US370935 19890623
- 主分类号： H03M13/00
- IPC分类号： H03M13/00 ; G06K5/00
摘要：
An error correction coding system employs a single check symbol from an arbitrary sequence of information symbols to provide single error correction at the symbol level. The sequence of information symbols may in fact also be arbitrarily long. The coding system of the present invention provides both a method and apparatus for encoding the check symbol and a method and apparatus for error correction based upon the single coded symbol character. The system is particularly applicable for use in conjunction with bar code recognition systems but is in fact applicable to a broad range of coding systems, including optical character recognition and ordinary alphanumeric codes.
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