发明名称 |
Recording/reproducing method and apparatus, processing apparatus, and reco rding medium for video signal having copy control information |
摘要 |
Electronic watermark information obtained by changing a luminance value of a luminance signal in a video signal and a copy generation management signal (CGMS signal) inserted into an area out of a scan region of the video signal are recorded into a recording medium. A reproducing apparatus comprises an electronic watermark information detecting circuit, a CGMS signal detecting circuit, a control circuit to which detected electronic watermark information and CGMS signal are supplied, and a video signal processing circuit controlled by an output of the control circuit. When the electronic watermark information and the CGMS signal have a rational relation, the video signal processing circuit is controlled to output the video signal. <IMAGE> <IMAGE> |
申请公布号 |
AU8420298(A) |
申请公布日期 |
1999.04.01 |
申请号 |
AU19980084202 |
申请日期 |
1998.09.11 |
申请人 |
HITACHI, LTD. |
发明人 |
HIROYUKI KIMURA;TOSHIFUMI TAKEUCHI;TAKAO ARAI |
分类号 |
G06T1/00;G11B20/00;H04N5/913 |
主分类号 |
G06T1/00 |
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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