Automobile alarm system with noise reduction function
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United States of America Patent
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Nov 24, 1992
Grant Date -
N/A
app pub date -
Jun 7, 1991
filing date -
Jun 7, 1991
priority date (Note) -
Expired
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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.
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