Patent ID: 6744788
Filing Date: 2004-06-01
Classification: H04H,H04J,H04L

Abstract:
Data transmission apparatus for multiplexing one or more channel data streams of equal, predetermined, data rate into a transmission data stream, said apparatus comprising:means for generating a control data stream of said same data rate as the channel data rate, in which first periodically repeating portions of said control data stream provide a synchronization signal and second periodically repeating portions of said control data stream provide identification data specifying information about said channel data streams in the same order as a predetermined ordering of said channel data streams, wherein the synchronization signal is multiplexed into the control data stream in one data portion occurring every first number of bits, where the first number of bits is equal to a number of channels in the channel data streams multiplied by a number of data portions used to encode the data; and means for multiplexing said control data stream with said one or more channel data streams in a cyclic pattern of equally-sized data portions so that a data portion from said control data stream is followed by data portions from each of said channel data streams according to said predetermined ordering of said channel data streams, where said identification data specifies a type code for each channel data stream.