| 摘要 |
If only any one of a pair of an SS anti-duplication control signal S5 and copy guard signal S6 generated correlatively each other added on the video signal played back from the disk is detected, or if the specific anti-duplication control signal is not detected, the video signal recorded in the disk (100) is judged to be an illegally duplicated video signal, and the output control signal generation section (17) controls the output control section (14) so as not to output the playback video signal S4. |
