Method and apparatus for insuring operation of a multiple part s

Details Method and apparatus for insuring operation of a multiple part s Method and apparatus for insuring operation of a multiple part s

1988-10-12

1991-01-01

MacDonald, Allen R.

Excavating

371 163, 371 61, 364200, 364267, 3642674, 3642679, G06F 1130

Patent

active

049824040

ABSTRACT:
In a system controller having multiple parts including a microprocessor, a main program for execution upon the microprocessor, and at least one clock interrupt handler portion, a method and apparatus for insuring proper operation comprised of providing a main counter and a delay counter in the main program providing a hardware watching timer, and providing in the clock interrupt handler means for starting the hardware watchdog timer and decrementing the main counter of the main program. The hardware watchdog timer reinitializes the main program in the event that the main program fails to respond to the clock interrupt handler and the delay counter reinitializes the main program and the clock interrupt handler in the event that the watchdog timer fails to operate. Therefore, each of the multiple parts of the system controller serve to insure the functionality of the other parts.

REFERENCES:
patent: 3723975 (1973-03-01), Kurtz, Sr. et al.
patent: 4363092 (1982-12-01), Abo et al.
patent: 4403302 (1983-09-01), Young et al.
patent: 4410938 (1983-10-01), Higashiyama
patent: 4410991 (1983-10-01), Lenart
patent: 4414623 (1983-11-01), Davis et al.
patent: 4512019 (1985-04-01), Bodig et al.
patent: 4513417 (1985-04-01), Lamb et al.
patent: 4538273 (1985-08-01), Lasser
patent: 4586179 (1986-04-01), Sirazi et al.
patent: 4594685 (1986-06-01), Owens
patent: 4618953 (1986-10-01), Daniels et al.
patent: 4627060 (1986-12-01), Huang et al.
patent: 4654821 (1987-03-01), Lapp
patent: 4696002 (1987-09-01), Schleuper et al.
patent: 4710928 (1987-12-01), Ueda
patent: 4716406 (1987-12-01), Shionoya
patent: 4727549 (1988-02-01), Tulpule et al.
patent: 4752930 (1988-06-01), Kitamura et al.
patent: 4775957 (1988-10-01), Yakuwa et al.
patent: 4803682 (1989-02-01), Hara et al.
patent: 4809280 (1989-02-01), Shonaka
patent: 4811200 (1989-03-01), Wagner et al.
patent: 4879647 (1989-11-01), Yazawa
patent: 4896321 (1990-01-01), Kawahara

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