Uninterruptable fault tolerant data processor

Details Uninterruptable fault tolerant data processor Uninterruptable fault tolerant data processor

1991-06-03

1993-12-14

Canney, Vincent P.

Excavating

371 91, 371 36, 371 681, G06F 1108

Patent

active

052710238

ABSTRACT:
An apparatus for fault tolerant data processing has a plurality of data processors. The fault tolerant apparatus includes at least three data processors operating in tandem. The apparatus further has a plurality of fault tolerant comparators. Each fault tolerant comparator is connected to a corresponding one of the data processors for receiving data from the corresponding data processor. Each fault tolerant comparator is further connected to each of the other fault tolerant comparators, with each fault tolerant comparator comparing output signals from the other fault tolerant comparators in a pairwise fashion to eliminate data output signals from any faulty data processors. The apparatus finds application in uninterruptible multiprocessor synchronization as well as data encryption in secure telephony.

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patent: 3681578 (1972-08-01), Stevens
patent: 4375683 (1983-03-01), Wensley
patent: 4593396 (1986-06-01), Anderson, Jr.
patent: 4710935 (1987-12-01), Kim et al.
patent: 4873685 (1989-10-01), Millis, Jr.
patent: 5128944 (1992-07-01), Flaherty et al.

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