发明名称 |
Device for detecting a watermark |
摘要 |
<p>Method of and system for detecting a watermark in MPEG-2 encoded video data during high-speed copying of the video data. A bus spy ( 120 ) selects independently coded frames, such as I-frames, from the video data and feeds the selected frames to a watermark detector ( 130 ) for detecting a watermark therein. By only supplying some of the frames to the watermark detector ( 130 ), the average input data rate for the watermark detector ( 130 ) is much lower than the data rate during the high-speed copying. Various embodiments present various ways to efficiently supply the contents of the selected frames to the watermark detector ( 130 ).</p> |
申请公布号 |
EP1399884(B1) |
申请公布日期 |
2006.03.22 |
申请号 |
EP20020740973 |
申请日期 |
2002.06.03 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
BEEKMANS, JAN, J., P., M.;STEENHOF, FRITS, A. |
分类号 |
G06T1/00;H04N1/387;H04N5/91;H04N7/08;H04N7/081;H04N7/26;H04N7/30 |
主分类号 |
G06T1/00 |
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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