Vehicle security system

Details Vehicle security system Vehicle security system

1991-01-09

1992-07-21

Crosland, Donnie L.

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

3404255, 340426, 340539, 34082569, 307 101, 307 102, 307 103, B60R 2510

Patent

active

051326604

ABSTRACT:
A vehicle security system includes a transmitter, a receiver, a timer, a controller and an alarm circuit. The transmitter transmits selectively an encoded signal when activated by the user. The receiver develops a decoded signal in response to reception and recognition of the encoded signal. The decoded signal has a reception time duration commensurate with a transmission time duration of the encoded signal. The timer develops a momentary timer output signal. The timer output signal is developed in response to initial application of the decoded signal to the timer in the absence of ignition voltage and is developed after a selected timer duration in response to continuous application of decoded signal to the timer and the presence of the ignition voltage only if the reception time duration exceeds the selected time duration. The controller develops a binary signal. The binary signal switches states in response to each occurrence of the timer output signal. Accordingly, the binary signal has a first state indicative of the security system being armed and the second state indicative of the security system being disarmed. The alarm circuit sounds an audible alarm in response to a current being developed in a selected circuit of the electrical system of the vehicle when the binary signal is in its first state.

REFERENCES:
patent: 4383242 (1983-05-01), Sassover
patent: 4754255 (1988-06-01), Sanders et al.
patent: 4794368 (1988-12-01), Grossheim et al.
patent: 4887064 (1989-12-01), Drori et al.
patent: 4922224 (1990-05-01), Drori et al.
patent: 4958084 (1990-09-01), Carlo et al.
patent: 5049867 (1991-09-01), Stouffer

Affiliated with

Also associated with

Rating

Vehicle security system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vehicle security system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vehicle security system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-846665