Input-output multiplexer-demultiplexer communications channel

Details Input-output multiplexer-demultiplexer communications channel Input-output multiplexer-demultiplexer communications channel

1983-11-14

1987-05-19

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 90, H04J 317, H04J 316

Patent

active

046673210

ABSTRACT:
The disclosure relates to an input-output multiplexer demultiplexer communication channel which transfers data between a communications controller and a multiplicity of radially attached communications ports. Self-clocking serial bit-synchronous data is transferred on two opposing unidirectional data links between the communications controller and the communications channel. Serial bit-synchronous data is transferred between the communications channel and the communications ports. The communications channel uses one-bit-time response round-robin polling when the communications channel initiates transmissions from the communications ports. Data transmissions from the communications controller are multiplexed on-the-fly in the communications channel to one of the communications ports.

REFERENCES:
patent: 3997727 (1976-12-01), Platts et al.
patent: 4020290 (1977-04-01), Perna et al.
patent: 4071701 (1978-01-01), Leijonhufvjd et al.
patent: 4131763 (1978-12-01), Hersohtal
patent: 4143242 (1979-03-01), Horiki

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