Transmit-secure non-blocking circuit-switched local area network

Details Transmit-secure non-blocking circuit-switched local area network Transmit-secure non-blocking circuit-switched local area network

1985-12-30

1987-12-01

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

370 58, 370 67, 3408257, H04Q 1104

Patent

active

047107693

ABSTRACT:
A switching system or local area network is non-blocking, transmit-secure and employs a star type topology. A back plane uses n(n-1) bus lines to interconnect n ports. Each port can transmit on any one of n-1 bus lines depending on the identity of the destination port. Likewise, each port can receive from any of n-1 bus lines, depending on the identity of the transmitting port. Signalling as well as data flow on the same bus lines. Each of the ports includes a dedicated microprocessor along with an arbitrator to resolve contention. The ports further have transmit and receive multiplexers coupled between the back plane and an associated work station or information source/sink.

REFERENCES:
patent: 4417244 (1983-11-01), Melas
patent: 4470140 (1984-11-01), Coffey
patent: 4494193 (1984-01-01), Brahm et al.
patent: 4589106 (1986-05-01), Prather et al.
patent: 4601029 (1986-07-01), Hargrave et al.
patent: 4633245 (1986-12-01), Blount et al.
patent: 4639910 (1987-01-01), Toegel et al.
patent: 4674083 (1987-06-01), Rackin

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