发明名称 |
MULTI-STAGE WATERMARKING PROCESS AND SYSTEM |
摘要 |
A multi-stage watermarking system and process that creates a watermark specification which describes how to generate a watermark, generates a template specification which describes how to merge the watermark into a target document, generates the watermark based on the watermark specification, and merges the watermark into the target document based on the template specification to provide a watermarked document.
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申请公布号 |
CA2366326(A1) |
申请公布日期 |
2002.06.29 |
申请号 |
CA20012366326 |
申请日期 |
2001.12.27 |
申请人 |
CONTENTGUARD HOLDINGS, INC. |
发明人 |
WANG, XIN;OKAMOTO, STEVE A.;ISHIGO, NANCY L.;LEAR, RUSSELL R. |
分类号 |
G06K9/00;G06T1/00;H04L9/00;H04N1/32;(IPC1-7):H04L9/32 |
主分类号 |
G06K9/00 |
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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