ANNOTATION VALIDITY USING PARTIAL CHECKSUMS
First Claim
1. A computer-implemented 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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Accused Products
Abstract
Embodiments of the present invention generally provide a system, method and article of manufacture for validating annotations describing one or more portions of a data object. In general, prior to displaying a requested annotation, a current change detection value may be calculated from current data extracted from portions of the data object described by the annotation. The current change detection value may be compared to a previously saved change detection value calculated from data extracted from the portions of the data object at the time the annotation was generated. A mismatch in the current change detection value and the previously saved change detection value indicates a change in the annotated portions of the data object, which may render the annotation invalid. The annotated portions of the data object may be continuous or discontinuous.
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Citations
10 Claims
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1. A computer-implemented method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification