发明名称 |
Method to deter document and intellectual property piracy through individualization |
摘要 |
A system for identifying the authorized receiver of any particular copy of a document. More specifically, each particular copy of a document is fingerprinted by applying a set of variations to a document, where each variation is a change in data contents, but does not change the meaning or perusal experience of the document. A database associating a set of variants to a receiver is maintained. Thus any variant or copy of that variant can be traced to an authorized receiver.
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申请公布号 |
US5699427(A) |
申请公布日期 |
1997.12.16 |
申请号 |
US19950494615 |
申请日期 |
1995.06.23 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CHOW, CHEE-SENG;KUTTEN, SHAY;YUNG, MARCELL MORDECHAY |
分类号 |
G11B20/00;G11B23/28;H04N1/32;(IPC1-7):G11B23/28 |
主分类号 |
G11B20/00 |
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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