Methods and apparatus for embedding watermarks
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United States of America Patent
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Dec 27, 2011
Grant Date -
Feb 25, 2010
app pub date -
Nov 5, 2009
filing date -
Jun 13, 2003
priority date (Note) -
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Abstract
Methods and apparatus for embedding a watermark are disclosed. An example method for embedding a watermark disclosed herein comprises identifying a transform coefficient associated with a compressed digital data stream, obtaining a mantissa code, and modifying the transform coefficient based on the mantissa code to embed the watermark.
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