Communications: electrical – External condition vehicle-mounted indicator or alarm – Transmitter in another vehicle
Patent
1999-06-09
2000-07-11
Wu, Daniel J.
Communications: electrical
External condition vehicle-mounted indicator or alarm
Transmitter in another vehicle
340906, 340937, 340907, 340916, 340903, 340905, G08G 100
Patent
active
060879602
ABSTRACT:
An accident sound detection circuit includes an accident sound detection block that detects an accident sound from a sound signal inputted from an environmental sound detection unit and outputs an accident sound detection signal a power spectrum calculator for obtaining a power spectrum in regard to a sound signal when acquiring the accident sound detection signal outputted from the accident sound detection block as a trigger signal, a spectrum pattern calculator for forming a pattern of the power spectrum, and a pattern comparator circuit for comparing the formed spectrum pattern and a set pattern set in a pattern generating circuit beforehand and generating a final accident sound detection signal if the patterns coincide with each other.
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Koura Makoto
Kyouno Noboru
Seri Toshimitsu
Mitsubishi Electric Engineering Company Limited
Nguyen Tai T.
Wu Daniel J.
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