发明名称 |
Method and apparatus for decoding two-dimensional bar code using CCD/CMD camera |
摘要 |
A method and apparatus for decoding a two-dimensional bar code symbol using a charge-coupled device (CCD) camera or a charge-modulation device (CMD) camera. The CCD/CMD camera takes pictures of the symbol and the picture is converted into digital data. The location and orientation of the two-dimensional bar code symbol is determined and verified. Defects and damages on the symbol are detected and corrected. The symbol is scanned to read the codewords of the two-dimensional bar code symbol.
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申请公布号 |
US5319181(A) |
申请公布日期 |
1994.06.07 |
申请号 |
US19920851493 |
申请日期 |
1992.03.16 |
申请人 |
SYMBOL TECHNOLOGIES, INC. |
发明人 |
SHELLHAMMER, STEPHEN J.;CHEN, MING-HUA;NIKZAD, ARMAN |
分类号 |
G06K7/016;G06K7/10;G06K19/06;(IPC1-7):G06K7/10;G06K9/00 |
主分类号 |
G06K7/016 |
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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