发明名称 |
ERROR CORRECTION IN MACRO BAR CODE SYMBOLS |
摘要 |
A data encoding/decoding scheme includes a plurality of bar code symbols each carrying a portion of the data in which improved error correction capabilities are incorporated. According to one aspect, once data codewords have been derived to form the symbols, a first set of data correction elements are derived from a first field, then a second set of error correction elements are derived from the data elements and the first set of error correction elements using a second, wider field.
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申请公布号 |
US2002088865(A1) |
申请公布日期 |
2002.07.11 |
申请号 |
US19990468185 |
申请日期 |
1999.12.21 |
申请人 |
HE DUANFENG;HUNTER KEVIN;SHELLHAMMER STEPHEN J.;KUMAR SUNDEEP |
发明人 |
HE DUANFENG;HUNTER KEVIN;SHELLHAMMER STEPHEN J.;KUMAR SUNDEEP |
分类号 |
G06K7/14;(IPC1-7):G06K19/06 |
主分类号 |
G06K7/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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