发明名称 |
Instance specific digital watermarks |
摘要 |
A method and apparatus for dynamically applying digital watermarks. Requested content is sent to a security module of a user device. A digital watermark is dynamically determined based at least on instance information about a rendering engine of the user device. The digital watermark is then rendered with the content using the rendering engine of the user device.
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申请公布号 |
US7269735(B2) |
申请公布日期 |
2007.09.11 |
申请号 |
US20030425828 |
申请日期 |
2003.04.30 |
申请人 |
CONTENTGAURD HOLDINGS, INC. |
发明人 |
RALEY MICHAEL;CHEN DANIEL;WU HSI-CHENG;TA THANH |
分类号 |
H04L9/00;G06F21/00;H04L29/06;H04L29/08 |
主分类号 |
H04L9/00 |
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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