A video signal input-output circuit and a recording-reproduction apparatus in which a digitally compressed video signal input in packet form can be recorded and reproduced efficiently and in stable fashion. In this apparatus, a clock reference is detected from a packet signal containing the clock reference...http://www.google.com.au/patents/US7319808?utm_source=gb-gplus-sharePatent US7319808 - Input-output circuit, recording apparatus and reproduction apparatus for digital video signal
