Invention Grant
- Patent Title: Acoustic device, acoustic system, moving body device, and malfunction diagnosis method for acoustic system
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Application No.: US14916346Application Date: 2014-09-11
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Publication No.: US09860638B2Publication Date: 2018-01-02
- Inventor: Ichiro Ohno , Fumiyasu Konno , Shinnosuke Nagasawa , Shigeharu Sumi
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2013-194914 20130920
- International Application: PCT/JP2014/004688 WO 20140911
- International Announcement: WO2015/040836 WO 20150326
- Main IPC: H04R3/00
- IPC: H04R3/00 ; H04R29/00 ; B60Q5/00 ; B60Q11/00 ; B60L3/00 ; G01R3/00 ; G01R31/00 ; G01R31/02 ; G01R31/28
Abstract:
An inspection signal generator of an acoustic device outputs a first inspection signal. An amplifier receives a first reference signal, and outputs a second inspection signal according to the first inspection signal. A first detector is electrically connected to an output side of the amplifier, and outputs a first detection signal based on the second inspection signal. The first detector is electrically connected to the output side of the amplifier, and outputs the first detection signal based on the second inspection signal. A determiner compares a first detection signal output from the first detector with a preset determination reference signal so as to detect electrical abnormality between a ground terminal and an output terminal electrically connected to the output side of the amplifier.
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