Dual computer system

Details Dual computer system Dual computer system

1975-07-18

1977-09-20

Atkinson, Charles E.

Registers

Transfer mechanism

Traveling pawl

235153AE, G06F 1100

Patent

active

040499570

ABSTRACT:
A dual computer system comprising a pair of computer systems and a dual system controller for monitoring the results of the operations by the computer systems. When the results of the operations coincide with each other, such results are applied to an external output register for process control, while when there is non-coincidence between the results of the operations the operation of the computer systems is interrupted and both the computer systems are checked with a diagnose routine for detection as to whether the operation is normal or abnormal. In the system, a status register is provided so that the computer systems can read the content of the register before being placed in independent operation. The main and subsidiary computer systems read the content of the register with different timing so that they may not arbitrarily deliver their outputs to the external output register due to malfunctions of the dual system controller.

REFERENCES:
patent: 3252149 (1966-05-01), Weida et al.
patent: 3303474 (1967-02-01), Moore et al.
patent: 3517174 (1970-06-01), Ossfeldt
patent: 3557315 (1971-01-01), Kobus et al.
patent: 3692989 (1972-09-01), Kandiew
patent: 3806887 (1974-04-01), Schulte et al.
patent: 3838261 (1974-09-01), Rice et al.
patent: 3898621 (1975-08-01), Zelinski et al.

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