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.
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
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