Method and apparatus for detecting the uncontrollable operation

Details Method and apparatus for detecting the uncontrollable operation Method and apparatus for detecting the uncontrollable operation

1985-11-14

1987-12-01

Fleming, Michael R.

Excavating

371 29, 371 62, G06F 1132

Patent

active

047109289

ABSTRACT:
A system arrangement for detecting the uncontrollable operation of a control system includes an interrupt signal generating circuit which issues the interrupt signal to the central processing unit (CPU) on a hardware basis so that the CPU is interrupted at a constant interval even during the uncontrollable operation of the control system. The CPU responds to the interrupt signal to initiate the interrupt processing routine, which then detects the state of uncontrollable operation basing on the trace of the computational processes carried out by the CPU.

REFERENCES:
patent: 4570261 (1986-02-01), Maher
patent: 4586179 (1986-04-01), Sizazi
patent: 4592053 (1986-05-01), Matsuura
patent: 4594685 (1986-06-01), Owens
patent: 4598355 (1986-07-01), Shepler
patent: 4611281 (1986-09-01), Suko
patent: 4618953 (1986-10-01), Daniels

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