Record and related method for storing encoded information using overt code characteristics to identify covert code characteristics
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United States of America Patent
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Jan 31, 2006
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N/A
app pub date -
Dec 20, 1999
filing date -
Dec 20, 1999
priority date (Note) -
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Abstract
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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