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Transmarking of multimedia signals

  • US 20010044899A1
  • Filed: 03/16/2001
  • Published: 11/22/2001
  • Est. Priority Date: 09/25/1998
  • Status: Active Grant
First Claim
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1. A method of transmarking a media signal previously embedded with a first digital watermark using a first digital watermark embedding method, comprising:

  • detecting the first digital watermark in the media signal;

    embedding message information from the first digital watermark into a second digital watermark in the media signal before the media signal undergoes a transformation process such that the second digital watermark is adapted to survive the transformation process.

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