发明名称 |
Method and apparatus for modifying a video signal |
摘要 |
A standard video signal is processed by including an interval of an insertion signal whose potential varies continuously between the video sync tip level and a level substantially above blanking level during at least part of the active interval of at least one blank line in the vertical blanking interval.
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申请公布号 |
US5402488(A) |
申请公布日期 |
1995.03.28 |
申请号 |
US19910752841 |
申请日期 |
1991.08.30 |
申请人 |
KARLOCK, JAMES A. |
发明人 |
KARLOCK, JAMES A. |
分类号 |
G11B20/00;H04N5/913;H04N7/08;H04N7/084;H04N7/087;H04N7/171;(IPC1-7):G11B15/04;H04N5/76 |
主分类号 |
G11B20/00 |
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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