Communications: electrical – Land vehicle alarms or indicators – Of burglary or unauthorized use
Patent
1995-10-24
1997-03-11
Crosland, Donnie L.
Communications: electrical
Land vehicle alarms or indicators
Of burglary or unauthorized use
340566, 340689, 340692, 200 6145R, 200 6152, 200 52A, 73DIG1, B60R 2510
Patent
active
056105762
ABSTRACT:
A control device for an alarm system includes a sensor circuit, an amplifier circuit for amplifying a sensor signal from the sensor circuit, a filter circuit for filtering an amplified output of the amplifier circuit, and first and second comparators, each having a reference input and a test input which receives a filtered signal output of the filter circuit. The first reference signal present at the reference input of the first comparator is lower than the second reference signal present at the reference input of the second comparator. The first comparator activates an oscillator circuit to generate an intermittent activating signal when the filtered signal output exceeds the first reference signal. A first alarm signal source presents a first control signal to the alarm system upon reception of the intermittent activating signal from the oscillator circuit. The second comparator generates an activating signal that is received by a second alarm signal source when the filtered signal output exceeds the second reference signal. The second alarm signal source presents a second control signal to the alarm system upon reception of the second activating signal from the second comparator.
REFERENCES:
patent: 4300135 (1981-11-01), Korn et al.
patent: 4358750 (1982-11-01), Webster
patent: 4584569 (1986-04-01), Lopez et al.
patent: 5289159 (1994-02-01), Iwata
patent: 5459447 (1995-10-01), Snyder et al.
patent: 5532670 (1996-07-01), Issa et al.
Crosland Donnie L.
Lite-On Automotive Corporation
LandOfFree
Control device for permitting two-stage operation of an alarm sy does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control device for permitting two-stage operation of an alarm sy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control device for permitting two-stage operation of an alarm sy will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-446542