Alarmcard

Details Alarmcard Alarmcard

1988-08-01

1990-03-13

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

34082531, G08B 1314, G06F 704

Patent

active

049086081

ABSTRACT:
A security device for use with equipment having a microprocessor that produces a warning from a warning device such as an alarm if the equipment is changed from a predetermined condition. The change from the predetermined condition can be caused by loss of power to the equipment, physical movement of the equipment, or both. The security device includes an interface means to allow information such as passwords, battery checks, alarm tests, and alarm arming sequences to be passed between the equipment (via its microprocessor) and the security device. The warning device includes a latching mechanism for continuously producing the warning signal until some reset action is undertaken. A password can be used to arm the warning device. If the equipment is powered by a standard AC power outlet common in walls, the security device can include a reset that involves reconnecting the AC power supply. If the equipment is portable and is powered by a DC power supply as is common in most batteries, the security device can include a reset that involves entrance of a password.

REFERENCES:
patent: 4284983 (1981-08-01), Lent
patent: 4327360 (1982-04-01), Brown
patent: 4581606 (1986-04-01), Mallory
patent: 4638293 (1987-01-01), Min
patent: 4654640 (1987-03-01), Carll et al.
patent: 4673914 (1987-06-01), Lee
patent: 4680574 (1987-07-01), Ruffner
patent: 4683462 (1987-07-01), Takeda et al.
patent: 4805233 (1989-02-01), Robitschko et al.
patent: 4806926 (1989-02-01), Nakamura
patent: 4808981 (1989-02-01), Seibold

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