| 发明名称 |
Methods and apparatus for embedding watermarks |
| 摘要 |
<p>Methods and apparatus for embedding a watermark are disclosed. In an example method, one or more frames associated with a compressed digital data stream (240) is identified. Each of the one or more frames to identify a plurality of transform coefficient sets (320) is unpacked. The plurality of transform coefficient sets (320) is modified to embed the watermark (230).</p> |
| 申请公布号 |
AU2004258470(A1) |
申请公布日期 |
2005.01.27 |
| 申请号 |
AU20040258470 |
申请日期 |
2004.06.14 |
| 申请人 |
NIELSEN MEDIA RESEARCH, INC. |
发明人 |
VENUGOPAL SRINIVASAN |
| 分类号 |
G10L19/00;H04K1/02;G06F17/14;G06K9/00;G06T;G10L19/018;G10L19/02;H04H20/31;H04H60/31;H04N;H04N7/24 |
主分类号 |
G10L19/00 |
| 代理机构 |
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