Hiding codes in input data
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United States of America Patent
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Aug 12, 2008
Grant Date -
Apr 19, 2007
app pub date -
Sep 27, 2006
filing date -
Jul 31, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to hiding codes in input data. In one embodiment, a method is provided including: obtaining input data associated with image or visual information; selecting portions of the input data to hide a plural-bit code based at least in part on predetermined data; and modifying selected portions of the input data to hide the plural-bit code at least in part on changing one or more values of the input data at or around the selected portions. Other embodiments are described and claimed as well.
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