发明名称 |
METHOD AND APPARATUS FOR PROVIDING A CONTENT CONTROL SIGNAL VIA COLOR BURST PHASE MODIFICATIONS |
摘要 |
The "color stripe" process is well known in the video field for preventing copying by analog video tape recorders of video content, and operates by altering the phase of a portion of the video signal color burst. Here, a weakened version of the color stripe process is employed in a video signal whereby the color burst phase alterations are reduced or attenuated so there is no copy prevention effect on a typical video tape recorder. However the weakened color stripe process is still sufficient to be detectable by a suitable detector located in a compliant device, so the detected presence of the color stripe serves as an encoded indication of copy control or other content control for the video signal by the compliant device. |
申请公布号 |
WO2010081027(A2) |
申请公布日期 |
2010.07.15 |
申请号 |
WO2010US20532 |
申请日期 |
2010.01.08 |
申请人 |
ROVI SOLUTIONS CORPORATION;CLOUTMAN, JOHN, F.;QUAN, RONALD |
发明人 |
CLOUTMAN, JOHN, F.;QUAN, RONALD |
分类号 |
H04N9/455 |
主分类号 |
H04N9/455 |
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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