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Digital watermarks used in automation equipment

  • US 20020169962A1
  • Filed: 05/10/2001
  • Published: 11/14/2002
  • Est. Priority Date: 05/10/2001
  • Status: Abandoned Application
First Claim
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1. ) A method for controlling placement of a first part on a second part comprising, placing a printed image containing a digital watermark on at least one of said parts, capturing a digital image of said printed image, reading a grid signal contained in said digital watermark, and determining the angular rotation of said part from said watermark grid signal.

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