Method of diagnosing circuit board, circuit board, and CPU unit

Details Method of diagnosing circuit board, circuit board, and CPU unit Method of diagnosing circuit board, circuit board, and CPU unit

2011-01-11

2011-01-11

Baderman, Scott T (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S022000

Reexamination Certificate

active

07870428

ABSTRACT:
In a circuit board on which a plurality of CPUs are mounted, the CPUs comprises: monitor units for outputting task statuses of the respective CPUs; and a diagnosis circuit connected to the plurality of CPUs, comparing and judging combinations of the task statuses of the plurality of CPUs based on information on task statuses outputted from the monitor units, and detecting false operations and failures of the circuit board.

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