Redundancy system for data communication

Details Redundancy system for data communication Redundancy system for data communication

1975-07-10

1977-04-12

Atkinson, Charles E.

Communications: electrical

Digital comparator systems

3401461C, G08C 2500, G06F 1100

Patent

active

040178285

ABSTRACT:
A redundancy system for data communications upon two duplicate communication channels, each having transmission and reception circuits, characterized by a switching circuit for selecting one of said two communication channels, a single error detection circuit for detecting an error in the signal transmitted, and a control circuit for the switching circuit arranged to cause said two communication channels to alternately transmit signals when both the channels are in normal operation, and to cause one of said two channels to be selected when the other fails. The two channels share the error detection circuit and the control circuit and can therefore be built at a reduced cost and operated efficiently. Since the two channels are regularly checked for errors, they are operated with increased reliability.

REFERENCES:
patent: 2932005 (1960-04-01), Brightman
patent: 3161732 (1964-12-01), Martin et al.
patent: 3253259 (1966-05-01), Jacoby
patent: 3370270 (1968-02-01), Cesaro
patent: 3409875 (1968-11-01), Jager et al.
patent: 3445811 (1969-05-01), Hashimoto et al.
patent: 3763470 (1973-10-01), Beng et al.
patent: 3890493 (1975-06-01), Burtness et al.

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