| 发明名称 |
FILTER BY-PASS FOR TRANSMITTING AN ADDITIONAL SIGNAL WITH A VIDEO SIGNAL |
| 摘要 |
A controlled element (27) for spectrum attenuation or a controlled filter is disclosed that is used to aid in the insertion of a secondary signal into a video signal without distorting the blanking intervals or close captioned data contained in the blanking interval of the video signal.
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| 申请公布号 |
CA2164830(A1) |
申请公布日期 |
1994.12.22 |
| 申请号 |
CA19942164830 |
申请日期 |
1994.06.10 |
| 申请人 |
WAVEPHORE, INC. |
发明人 |
MONTGOMERY, GERALD D. |
| 分类号 |
H04N9/00;H04N5/445;H04N7/025;H04N7/03;H04N7/035;H04N7/081;(IPC1-7):H04N7/08 |
主分类号 |
H04N9/00 |
| 代理机构 |
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