Apparatus and method for detecting theft of electronic equipment

Details Apparatus and method for detecting theft of electronic equipment Apparatus and method for detecting theft of electronic equipment

1991-06-07

1993-07-27

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

Specific condition

340529, 340664, 340687, G08B 1314

Patent

active

052313751

ABSTRACT:
A system is disclosed for deterring theft of portable electronic equipment that operates in accordance with an industry standard known as EIA-232-D. A theft deterrent unit monitors signal current transmitted between interconnected electronic units. When one or more of the interconnected electronic units is disconnected, the theft deterrent unit detects the cessation of signal current and activates an alarm. The alarm may be used to generate a local alarm such as, for example, an audible alarm, and the alarm signal may be transmitted to a central alarm system for further processing.

REFERENCES:
patent: 4736195 (1988-04-01), McMurtry et al.
patent: 4760382 (1988-07-01), Faulkner
patent: 4896140 (1990-01-01), Biever et al.
patent: 4952912 (1990-08-01), Tanaka
patent: 4973945 (1990-11-01), St. John

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