Data transmission system

Details Data transmission system Data transmission system

1975-12-03

1977-09-13

Stewart, David L.

179 15BF, 179 18EA, H04J 314

Patent

active

040484467

ABSTRACT:
A plurality of subscriber stations and a plurality of switching points are connected in series in a loop circuit transmitting signals in one direction, parallel line sections disposed in parallel with the loop circuit are each connected with two switching points and each switching point contains a switch controlled by a failure detector and adapted for switching between a loop circuit section and a parallel line section. The transmission direction of the parallel line sections corresponds to the direction of the loop circuit; an incoming parallel line section which by-passes one or two immediately preceding switching points and an out-going parallel line section which by-passes one or two immediately succeeding switching points are connected to each switching point.

REFERENCES:
patent: 3458661 (1969-07-01), Forde
patent: 3560663 (1971-02-01), Lee
patent: 3569635 (1971-03-01), Bloch
patent: 3578917 (1971-05-01), Grandjean
patent: 3731002 (1973-05-01), Pierce

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