H - Electricity – 04 – K
Patent
H - Electricity
04
K
H04K 1/02 (2006.01) G11B 20/00 (2006.01) H04B 1/69 (2006.01) H04N 5/913 (2006.01)
Patent
CA 2227380
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 is judged to be an illegally duplicated video signal, and the output control signal generation section controls the output control section so as not to output the playback video signal S4.
L'invention est un système de protection contre les duplications dans lequel si l'un ou l'autre de deux signaux, un signal de contrôle S5 et un signal de protection S6, qui sont produits en corrélation et sont ajoutés au signal vidéo lu sur un disque, est détecté, ou si le signal de contrôle particulier n'est pas détecté, le signal vidéo enregistré sur le disque est considéré comme un signal vidéo dupliqué illégalement et l'unité de contrôle interdit la sortie du signal vidéo lu S4.
Gowling Lafleur Henderson Llp
Sony Corporation
LandOfFree
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