Invention Grant
US09406291B2 Transmission circuit, semiconductor device, ultrasonic sensor and vehicle
有权
传输电路，半导体器件，超声波传感器和车辆
- Patent Title: Transmission circuit, semiconductor device, ultrasonic sensor and vehicle
- Patent Title (中): 传输电路，半导体器件，超声波传感器和车辆
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Application No.: US13962472Application Date: 2013-08-08
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Publication No.: US09406291B2Publication Date: 2016-08-02
- Inventor: Isao Niwa
- Applicant: Rohm Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Fish & Richardson P.C.
- Priority: JP2012-177932 20120810
- Main IPC: B06B1/06
- IPC: B06B1/06 ; G10K11/18 ; B06B1/02 ; G01S15/93 ; G01S7/524 ; G01S15/87
Abstract:
A transmission circuit transmits an ultrasonic signal from an ultrasonic vibrator by driving a terminal voltage of the ultrasonic vibrator using a first pulse signal and then further driving the terminal voltage using a second pulse signal having an opposite phase to the first pulse signal. At least one of a pulse number of the second pulse signal and a pulse level of the terminal voltage is arbitrarily set.
Public/Granted literature
- US20140043940A1 TRANSMISSION CIRCUIT, SEMICONDUCTOR DEVICE, ULTRASONIC SENSOR AND VEHICLE Public/Granted day:2014-02-13
Information query
IPC分类:
