Method to provide the generation of an incorrect or unreliable vertical/frame rate signal

摘要

Techniques for modifying the characteristic signals of the Vertical Blanking Interval (VBI) are disclosed for the generation of an incorrect or unreliable vertical or frame rate signal, via particular characteristics and/or peculiarities of the signals in the VBI. The incorrect or unreliable vertical rate or frame signal is utilized to modify an anti-copy protection signal or a normal video signal.