| 摘要 |
PROBLEM TO BE SOLVED: To effectively function copyright protection function using various methods such as an AGC, a color stripe, or the like in a digital VTR. SOLUTION: A recording medium, in which encoded image data and accompanying information data of the image data disposed adjacently to a synchronous block and an ID block of a header part/and structured including a copyright protection signal and data for cryptography are recorded, is reproduced, a copyright protection signal generation circuit 252 inserts a mixture signal consisting of a color sub carrier whose phase is inverted at a desired line and a pseudo horizontal synchronous pulse into an analog video signal obtained by decoding the image data on the basis of a CGMS of copyright protection information, and the CGMS is also inserted into a vertical blanking period. |
