Fail-safe controller

Details Fail-safe controller Fail-safe controller

2007-03-13

2007-03-13

Barnes, Crystal J. (Department: 2121)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S054000, C714S719000, C714S819000, C708S671000, C700S002000, C700S020000, C700S021000, C700S079000

Reexamination Certificate

active

10891360

ABSTRACT:
A controller that receives an input of a status of an apparatus, executes predetermined arithmetic and logical operations, and outputs a control signal of the apparatus, and is equipped with a plurality of processors for executing the arithmetic and logical operations; a plurality of data storage elements for storing respective results of the arithmetic and logical operations of the plurality of the processors; a comparator for comparing the results of the arithmetic and logical operations of the plurality of the processors stored in the plurality of the data storage elements; and a comparison record storage element for storing a record of the comparison results of the comparator.

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