Exploitation of null packets in packetized digital television systems

A system and method for adding auxiliary data D A 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 numbe...

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Bibliographische Detailangaben
Hauptverfasser: BASSE, HANNO, PLUMMER, ROBERT H, MICHENER, JAMES A, NEWMAN, RICHARD K, STANGER, LEON J
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A system and method for adding auxiliary data D A 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 of null packets in the statistically multiplexed data stream by controlling the target bandwidth B T of the statistical multiplexer, or by modifying the statistical multiplexer equation to make the auxiliary data stream a participant in the negotiation process of allocating throughput among the data sources.