Local area network with star topology and ring protocol

Details Local area network with star topology and ring protocol Local area network with star topology and ring protocol

1990-09-10

1992-06-30

Lee, John D.

Optical waveguides

With optical coupler

Plural

359118, 359120, 359127, 359173, 385 46, G02B 628

Patent

active

051270676

ABSTRACT:
In a local area network all communication nodes are connected only to a centrally located star network coupler, but data is transmitted from one communication node to the next active communication node in a sequence defined by a ring protocol. The star network coupler may be implemented by switches capable of connecting a receiver for one communication node to a transmitter for the next communication node or to a bypass line for the next communication node. However, preferably the star network coupler comprises a selective multiplexer for each of the nodes. Each selective multiplexer has inputs connected to all of the communication nodes to receive therefrom transmission data and a line status signal indicating communication activity with each node so that inactive nodes can be bypassed.

REFERENCES:
patent: 4708424 (1987-11-01), Marhic
patent: 4781427 (1988-11-01), Husbands et al.
patent: 4815803 (1989-03-01), Faulkner et al.
patent: 4834483 (1989-05-01), Arthurs et al.
patent: 4946244 (1990-08-01), Schembri

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