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 US7907749(B2) 申请公布日期 2011.03.15
申请号 US20090559879 申请日期 2009.09.15
申请人 CONTENTGUARD HOLDINGS, INC. 发明人 WANG XIN;OKAMOTO STEVE ATSUSHI;LEAR RUSSELL ROBERT;ISHIGO NANCY LYNN
分类号 G06K9/00;G06F21/00;G06K15/00;G06T1/00;H04L9/00;H04N1/32 主分类号 G06K9/00
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