| 摘要 |
PROBLEM TO BE SOLVED: To guarantee originality of a document comprising a plurality of pages. SOLUTION: A total page number, a page number of each page, and a feature amount of each page are embedded, in front or behind each page, or in pages in front and after the each page. The embedded page numbers and features are compared, and their matching is detected and falsification of the document is detected. COPYRIGHT: (C)2007,JPO&INPIT
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