A clock recovery system and method for maintaining the frequency of a decoder clock at approximately the same frequency as an encoder clock based on program clock reference (PCR) values contained in a digital data stream. A voltage controlled oscillator (78) produces a decoder clock that is divided...http://www.google.de/patents/US5699392?utm_source=gb-gplus-sharePatent US5699392 - Method and system for the recovery of an encoder clock from an MPEG-2 transport stream 
