Parallel distribution and fingerprinting of digital content
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United States of America Patent
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Sep 19, 2006
Issued Date -
N/A
app pub date -
Jan 31, 2003
filing date -
Jul 9, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
Distributing information, including the steps of watermarking the digital content, distributing the digital content using a multi-source system, and partially fingerprinting digital content at each stage of moving information from a point of origin to the viewer. 'Adaptation' of the digital content to the recipient includes maintaining the digital content in encrypted form at each such intermediate device, including decrypting the digital content with a key unique to both the device and the specific movie, selecting a portion of the watermark locations into which to embed information, embedding fingerprinting information into those locations sufficient to identify the recipient, and encrypting the fingerprinted digital content with a new such key.
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