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Inferring object status based on detected watermark data

  • US 7,054,462 B2
  • Filed: 03/28/2002
  • Issued: 05/30/2006
  • Est. Priority Date: 05/08/1995
  • Status: Expired due to Fees
First Claim
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1. A method to analyze an object, wherein an original or authentic object includes both a first watermark and a second different watermark, said method comprising:

  • attempting to detect first and second watermarks from an object;

    if the first and second watermarks are both detected, reaching a first conclusion concerning the object; and

    if the first watermark is detected but not the second, reaching a second, different, conclusion concerning the object.

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