发明名称 |
Video signal transmission method, superimposed information extraction method, video signal output device, video signal recording device, and video signal recording medium |
摘要 |
The output device generates the PN code string every second chip interval with reference to the video sync signal, and spectrally spreads the additional information using this PN code string. The spectrally spread additional information is superimposed on the video signal every second chip interval and outputted. Upon receiving the video signal, in the recording device for recording the video signal on a recording medium, the video signal component is canceled each other between the video signal component in the chip interval on which the additional information is superimposed and the video signal component in the chip interval on which the additional information is not superimposed because of the correlation of the video signal in the horizontal direction, and only the additional information is extracted.
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申请公布号 |
US6804454(B2) |
申请公布日期 |
2004.10.12 |
申请号 |
US20010927561 |
申请日期 |
2001.08.10 |
申请人 |
SONY CORPORATION |
发明人 |
OGINO AKIRA;IKEDA NOZOMU |
分类号 |
H04N5/92;H04N5/913;H04N7/025;H04N7/03;H04N7/035;H04N7/08;H04N7/081;H04N7/167;H04N7/171;(IPC1-7):H04N5/91 |
主分类号 |
H04N5/92 |
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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