Method and apparatus for compressed-domain watermarking
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United States of America Patent
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Aug 26, 2008
Grant Date -
Feb 3, 2005
app pub date -
Jun 21, 2004
filing date -
Jun 19, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus for inserting a low frequency watermark into a compressed data stream carrying compressed content is disclosed. A portion of the compressed data stream is decoded to generate decoded content. The decoded content is analyzed to generate watermark insertion information. The compressed content is embedded with a low frequency watermark using the watermark insertion information.
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