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Annotation validity using partial checksums

  • US 20040111668A1
  • Filed: 12/04/2002
  • Published: 06/10/2004
  • Est. Priority Date: 12/04/2002
  • Status: Active Grant
First Claim
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1. A method comprising:

  • creating an annotation for one or more portions of a data object;

    calculating at least a first change detection value on data extracted from the one or more portions; and

    creating an annotation record containing the first change detection value and the annotation.

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