发明名称 |
Record and related method for storing encoded information using overt code characteristics to identify covert code characteristics |
摘要 |
A record and related method is provided for storing encoded information comprising a storage media, first marks on the storage media having a covert code characteristic, with the first marks conveying a covertly marked code and second marks preferably having an overt code characteristic which convey a second overtly marked code useful in decoding the covertly marked code.
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申请公布号 |
US6993655(B1) |
申请公布日期 |
2006.01.31 |
申请号 |
US19990467509 |
申请日期 |
1999.12.20 |
申请人 |
XEROX CORPORATION |
发明人 |
HECHT DAVID L.;LENNON JOHN;MERKLE RALPH |
分类号 |
H04L9/00;G06K7/10;G06K9/00;G06K19/06 |
主分类号 |
H04L9/00 |
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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