A system and method for adding auxiliary data DA to an output data stream from a statistical multiplexer is disclosed. An auxiliary multiplexer accepts a statistically multiplexed data stream, and substitutes auxiliary data packets for null data packets. The auxiliary multiplexer controls the number...http://www.google.fr/patents/US7376159?utm_source=gb-gplus-shareBrevet US7376159 - Exploitation of null packets in packetized digital television systems
Exploitation of null packets in packetized digital television systems