Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hiroyuki Kani0
Masakazu Takeichi0
Yoshihisa Sato0
Date of Patent
October 9, 2007
0Patent Application Number
111695800
Date Filed
June 30, 2005
0Patent Primary Examiner
Patent abstract
A plurality of ultrasonic sensors is provided in both front and rear bumpers of a vehicle to detect obstacles around the vehicle. Each sensor sets up a transmission frequency of an ultrasonic pulse signal that should be set up in a frequency adjustment circuit and a center frequency in filter processing in a filter circuit in response to a frequency setting frame transmitted from an EMU. The EMU stores a combination of the transmission frequency and the center frequency for each ultrasonic sensor.
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