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
Abstract:
    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.
Time: 13