Automobile alarm system with noise reduction function

Details Automobile alarm system with noise reduction function Automobile alarm system with noise reduction function

1991-06-07

1992-11-24

Crosland, Donnie L.

Communications: electrical

Land vehicle alarms or indicators

340428, 340429, 307 101, 361 93, B60Q 100

Patent

active

051666618

ABSTRACT:
An automobile alarm system with noise reduction function utilizes a built-in function in a single-chip computer, which is adapted to control the alarm system, to prevent the system being damaged by the noise, while the noise is presented in the form of high voltages, occurring during the operation of the engine. The alarm system has a current detector circuit to sense the presence of noise, and a one-shot circuit to selectively activate/inactivate the single-chip computer temporarily.

REFERENCES:
patent: 4143368 (1979-03-01), Route et al.
patent: 4698748 (1987-10-01), Juzswik et al.
patent: 4771356 (1988-09-01), Hastings
patent: 4839530 (1989-06-01), Greenwood
patent: 5081586 (1992-01-01), Barthel et al.

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