Optimization methods for the insertion, protection, and detection of digital watermarks in digital data

CAFC
  • US 7,913,087 B2
  • Filed: 11/10/2009
  • Issued: 03/22/2011
  • Est. Priority Date: 07/02/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A system for detecting at least one digital watermark using at least one digital filter and at least one key comprising:

  • a processor for identifying an area of the digital signal that has been affected by the at least one digital filter and a key for detecting the at least one digital watermark; and

    a detector for detecting the at least one digital watermark in the digital signal according to the at least one key and the identified area of the digital signal.

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