An energy-dispersal signal rejection circuit adapted for use in a direct-broadcast-from-satellite system rejects an energy-dispersal signal from an input signal which includes a video signal composed with the energy-dispersal signal by generating a cancellation signal synchronized with, and having a...http://www.google.se/patents/US4953179?utm_source=gb-gplus-sharePatent US4953179 - Energy-dispersal signal rejection circuit and method
