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Multi-stage watermarking process and system

  • US 7,907,749 B2
  • Filed: 09/15/2009
  • Issued: 03/15/2011
  • Est. Priority Date: 12/29/2000
  • Status: Expired due to Fees
First Claim
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1. A method for creating a watermark in a target document at different stages of the target document life cycle, the method comprising:

  • scanning the target document containing a target watermark;

    recovering the target watermark from the target document, the recovered target watermark indicating a template specification for describing how the watermark was merged into the target document;

    generating an additional watermark according to a watermark specification;

    updating the template specification by adding the watermark specification and associating the additional watermark with the watermark specification in the template specification; and

    merging the generated watermark with the scanned target document.

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