发明名称 |
Annotation validity using partial checksums |
摘要 |
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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申请公布号 |
US2004111668(A1) |
申请公布日期 |
2004.06.10 |
申请号 |
US20020310192 |
申请日期 |
2002.12.04 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CRAGUN BRIAN J.;RAPP WILLIAM C. |
分类号 |
G06F17/24;(IPC1-7):G06F15/00 |
主分类号 |
G06F17/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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