Multi-carrier watermarks using carrier signals modulated with auxiliary messages
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United States of America Patent
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Jul 5, 2005
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N/A
app pub date -
Jul 14, 2003
filing date -
Jul 19, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A watermark embedder encodes auxiliary information, such as a binary message, into a host media signal by modulating message signals with two or more corresponding carrier signals to form a watermark signal and embeds this signal into the host. A compatible watermark decoder uses the carrier signals to demodulate the message signals from the watermarked signal.
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