Integrating digital watermarks in multimedia content
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United States of America Patent
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Aug 26, 2003
Grant Date -
N/A
app pub date -
Mar 15, 2000
filing date -
Nov 18, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for decoding auxiliary data from media signals in multimedia content decodes watermarks from different media signals and uses the watermarks to control processing of the multimedia content. A copy control method decodes a watermark from one of the media signals in multimedia content, and uses the watermark to control processing of the multimedia content. Another method uses a watermark decoded from a first media signal to decode a second media signal. Yet another method uses a watermark decoded from a media signal to decode metadata associated with the media signal. Finally, another method forms a key for decoding data from at least first and second watermarks extracted from first and second media signals.
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