Method and apparatus for automobile security system

Details Method and apparatus for automobile security system Method and apparatus for automobile security system

1992-09-08

1994-04-19

Gaffin, Jeffrey A.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307 102, B60R 2504

Patent

active

053048490

ABSTRACT:
A security system for an automobile starter system is an electrical installation on the automobile whereby the starter system of the automobile can be actuated only when a correct ignition key to the automobile is used. Also, the starter system is safeguarded from being mistakenly actuated as the automobile motor is running. Two types of electrical circuit configuration are proposed to perform the automobile starter system security functions. The first electrical circuit configuration utilizes the analog circuitries applied with voltage window detection concept. The other electrical circuit configuration utilizes the sequential digital circuitries applied with the signal code detection concept.

REFERENCES:
patent: 3646515 (1972-02-01), Vodehnal
patent: 4413261 (1983-11-01), Greenberg
patent: 4438752 (1984-03-01), Cheung
patent: 4636651 (1987-01-01), Kilgore
patent: 4682062 (1987-07-01), Weinberger
patent: 4736113 (1988-04-01), Leu
patent: 4749873 (1988-06-01), Mutoh et al.
patent: 4804856 (1989-02-01), Hanisko et al.
patent: 4809199 (1989-02-01), Burgess et al.

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