Patent ID: 6157673
Filing Date: 2000-12-05
Classification: H04N

Abstract:
A decoding system for a plurality of transport streams comprising:a transport decoder for de-multiplexing data for at least one elementary stream corresponding to a program from a currently accessed transport stream of said plurality of transport streams and decoding the de-multiplexed data;a predecoder for extracting program specific information from another transport stream of said plurality of transport streams during said de-multiplexing of the data from the currently accessed transport stream by the transport decoder, said program specific information indicating a correspondence between packet ID numbers and data for programs in said another transport stream;means for coupling a selected one of said plurality of transport streams to said transport decoder and another of said plurality of transport streams to said predecoder; andmeans for providing the transport decoder with the program specific information extracted by the predecoder for use in an event of a channel change necessitating the coupling means coupling said another of said plurality of transport streams to said transport decoder.