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AssigneeNEC Corporation
InventorWATARU DOMON
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In a digital signal multiplexing device of a digital signal multiplexing and demultiplexing system, two multiplexers (21) respectively multiplex first and second programs of first to N-th MPEG2 compression encoded digital video signals into first and second transport signal sequences in accordance with an MPEG2 transport signal scheme, where N represents an integer which is two or greater. In accordance with a time division multiplexing scheme other than the MPEG2 transport stream scheme, a single multiplexer (23) further multiplexes the first and the second sequences into a multiplexed digital signal comprising a succession of payloads in which the first to the N-th digital video signals are time division multiplexed. The system is useful in a wholly digital broadcast service for more than a score of satellite broadcast channels.
A digital signal multiplexing device for multiplexing into a multiplexed digital signal a first plurality of digital video signals compression encoded in accordance with an MPEG2 scheme, comprising;
A multiplexed digital signal demultiplexing device for demultiplexing a multiplexed digital signal produced by compression encoding a first plurality of digital video signals in accordance with an MPEG2 scheme respectively into encoded sequences, converting said encoded sequences respectively to packet sequences, each packet sequence being a sequences of packets and including a packet header indicative of a packet stream identifier for use in distinguishing said each sequence of packets from another sequence of packets, multiplexing said packet sequences into a second plurality of transport stream signals in accordance with an MPEG2 transport stream scheme, and time division multiplexing said transport stream signals into said multiplexed digital signal, comprising:
Dependencies are inferred from the claim text.