Combined watermarking and fingerprinting
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United States of America Patent
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Oct 30, 2012
Grant Date -
Dec 23, 2010
app pub date -
May 21, 2010
filing date -
May 21, 2009
priority date (Note) -
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Abstract
Content fingerprints and watermarks are combined in various ways for content identification applications. Fingerprints are used to identify content generally while watermarks provide more detailed localization of parts within the content, and vice versa. Fingerprint techniques are further used for signal synchronization and other pre-processing steps to assist in digital watermark decoding. A variety of fingerprint/watermark techniques identify characteristics of the channel of content from content samples.
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