Patent Number: 6,434,322

Title: Reproducing method and apparatus, for a video signal having copy control information

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.

Inventors: Kimura; Hiroyuki (Hiratsuka, JP), Arai; Takao (Yokohama, JP), Takeuchi; Toshifumi (Ota-ku, JP)

Assignee: Hitachi, Ltd.

International Classification: H04N 5/913 (20060101); G06T 1/00 (20060101); G11B 20/00 (20060101); H04N 005/91 (); H04N 007/167 (); G11B 015/04 (); G11B 019/04 ()

Expiration Date: 08/13/2019