Integrating digital watermarks in multimedia content
First Claim
1. A method for decoding auxiliary data in audio visual content with an audio and video track, comprising:
- decoding digital watermarks in the audio and video tracks;
combining watermark messages from the audio and video tracks; and
using the combined messages to control processing of the audio visual content.
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Accused Products
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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Citations
16 Claims
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1. A method for decoding auxiliary data in audio visual content with an audio and video track, comprising:
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decoding digital watermarks in the audio and video tracks;
combining watermark messages from the audio and video tracks; and
using the combined messages to control processing of the audio visual content. - View Dependent Claims (2, 3)
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4. A method for digital watermark decoding for audio visual content including an audio and video track, the method comprising:
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decoding a first watermark from a first track of the audio visual content, the first track being the audio or video track;
and decoding a second media signal from a second track using the digital watermark from the first track, the second track being the audio or video track not including the first watermark. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A method of digital watermark decoding from audio visual content having an audio and video track, the method comprising:
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decoding at least a first watermark from a first media signal in the audio visual content;
decoding at least a second watermark from a second media signal in the audio visual content; and
forming a key for decoding data from at least the first and second watermarks. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification