A digital vertical synchronization system for use in a television receiver is disclosed. A vertical synchronization separator circuit receives a composite synchronizing signal and separates a vertical synchronizing signal from the composite signal. A clock counter receives a clock input signal having...http://www.google.fr/patents/US4227214?utm_source=gb-gplus-shareBrevet US4227214 - Digital processing vertical synchronization system for a television receiver set
Digital processing vertical synchronization system for a television receiver set
