Apparatus for locking/unlocking a number of units connected to a

Details Apparatus for locking/unlocking a number of units connected to a Apparatus for locking/unlocking a number of units connected to a

1995-07-24

1997-01-14

Harvey, Jack B.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

3408255, 395726, G06F 132

Patent

active

055949070

ABSTRACT:
A power controlling apparatus turns off a power to an apparatus whose connection to a central apparatus has been cut by a connection change, thus selectively turning off a power to an apparatus not required by the central apparatus. A locking/unlocking apparatus determines a value of the locking timer in the interrupt timer routine and, when the value has exceeded a predetermined level, takes a slave apparatus out of the locked state, thereby simplifying programming.

REFERENCES:
patent: 4099255 (1978-07-01), Stanley et al.
patent: 4218739 (1990-08-01), Negi et al.
patent: 4866667 (1989-09-01), Shimada
patent: 5054022 (1991-10-01), von Steenbrugge
patent: 5125093 (1992-06-01), McFarland
patent: 5163144 (1992-11-01), Ikeno
patent: 5276841 (1994-01-01), Koha
patent: 5287521 (1994-02-01), Nitta et al.

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