| Title: | Recording/reproducing method and apparatus, for video signal having copy control information | ||
| Application Number: | 98124370 | Application Date: | 1998.09.17 |
| Publication Number: | 1221177 | Publication Date: | 1999.06.30 |
| Approval Pub. Date: | 2004.11.10 | Granted Pub. Date: | 2004.11.10 |
| International Classifi-cation: | G11B20/00;H04N5/913 | ||
| Applicant(s) Name: | Hitachi, Ltd. | Address: | |
| Inventor(s) Name: | Hiroyuki Kimura;Takao Arai;Toshifumi Takeuchi | ||
| Attorney & Agent: | wang yue | ||
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Abstract: |
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| 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. | |||
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| Time: | 13 | ||
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