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Watermark embedding functions in rendering description files

  • US 7,142,691 B2
  • Filed: 03/16/2001
  • Issued: 11/28/2006
  • Est. Priority Date: 03/18/2000
  • Status: Expired due to Term
First Claim
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1. A method for controlling embedding of a digital watermark in a media object, comprising:

  • receiving a watermark embedding function specifying watermark embedding parameters, including watermark intensity and message payload for the media object;

    inserting the watermark embedding function into a rendering description file for the media object, the rendering description file including commands specifying how the media object is to be rendered, the media object representing a media signal; and

    at rendering time, reading and executing the watermark embedding function to steganographically embed the watermark message payload into the media object by varying the media signal according to the watermark intensity.

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