Benchmarks for digital watermarking
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United States of America Patent
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Nov 1, 2011
Grant Date -
Feb 18, 2010
app pub date -
Oct 20, 2009
filing date -
Apr 20, 2001
priority date (Note) -
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Abstract
The presently claimed invention relates generally to digital watermarking of data, e.g., representing video or audio. One claim recites a method including: obtaining data representing video or audio; using a multi-purpose electronic processor programmed for: transforming the data into a transform domain, analyzing the transformed data to identify a plurality of transform coefficients according to predetermined criteria, and altering the identified plurality of transform coefficients to carry a digital watermark; and analyzing the data to determine a baseline state for the digital watermark. Of course, other combinations and claims are provided too.
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