Electronic vehicle horn
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Apr 24, 2018
Issued Date -
N/A
app pub date -
Jul 27, 2016
filing date -
Jul 28, 2015
priority date (Note) -
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Abstract
An electronic vehicle horn outputs a warning sound by exciting a diaphragm using a piezoelectric device that is driven with a composite signal generated, in part, by modulating a first fundamental square wave with a first modulating square wave and setting a frequency deviation at the time of the modulation in a predetermined range, modulating a second fundamental square wave with a second modulating square wave and setting a frequency deviation at the time of the modulation in a predetermined range, and generating the composite signal by mixing the modulated first fundamental square wave and the modulated second fundamental square wave.
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