Method and apparatus to synthesize and defeat video copy protection signals

摘要: A method and apparatus for defeating copy protection signals in a video signal, also providing is disclosed. The defeat technique generally utilizes particular pulse position shifting, modulation, etc., of AGC, normal sync and/or pseudo pulses to increase the separation between pulses. Various embodiments are disclosed including selective shifting relative positions either sync/pseudo or AGC pulses, trimming portions narrowing all provide includes various dynamically varying by applying modulation above techniques over selected time periods cycle from condition condition, back condition.