发明名称 |
METHOD AND DEVICE FOR ADDING INFORMATION TO VIDEO SIGNAL, METHOD AND DEVICE FOR DETECTION INFORMATION FROM VIDEO SIGNAL, AND RECORDING MEDIUM |
摘要 |
An additional information is spectrally spread and superimposed on a video signal over a plurality of fields, and the superimposed additional information is detected easily. A time code information is spectrally spread using the first spectrally spreading code string synchronous to the video signal, and the spectral spread signal of the time code information is superimposed on the video signal. An additional information is spectrally spread using the second spectrally spreading code string generated synchronously to the sync signal of the video signal and having a different period or different content corresponding to the time code information, and the spectral spread signal of the additional information is superimposed on the video signal. |
申请公布号 |
CA2238732(A1) |
申请公布日期 |
1998.12.05 |
申请号 |
CA19982238732 |
申请日期 |
1998.05.27 |
申请人 |
SONY CORPORATION |
发明人 |
SUGITA, TAKEHIRO;OGINO, AKIRA;IKEDA, NOZOMU |
分类号 |
H04N5/91;H04B1/707;H04J13/00;H04N5/913 |
主分类号 |
H04N5/91 |
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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