Fault tolerant digital data processor with improved input/output

Details Fault tolerant digital data processor with improved input/output Fault tolerant digital data processor with improved input/output

1989-06-16

1990-11-27

Chan, Eddie P.

Boots, shoes, and leggings

3642402, 364268, 3642683, 3642686, 3642687, 364271, G06F 1116, G06F 1300

Patent

active

049741500

ABSTRACT:
A fault-tolerant digital data processing system comprises at least a first input/output controller communicating with at least one peripheral device over a peripheral device bus. The peripheral bus includes first and second input/output buses, each having means for carrying data, address, control, and timing signals. The input/output controller includes an element for applying duplicate information signals synchronously and simultaneously to the first and second input/output buses for transfer to the peripheral device. The input/output controller further includes a bus interface element for receiving, in the absence of fault, duplicative information signals synchronously and simultaneously from the first and second input/output buses.

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