Title:
STRUCTURE FOR USE IN DETECTING VIBRATION DISPLACEMENT OF SPEAKER AND DUAL-EFFECT DEVICE FOR AUDIO-ELECTRIC CONVERSION
Document Type and Number:
WIPO Patent Application WO/2016/155340
Kind Code:
A1
Abstract:
Disclosed is a structure for use in detecting vibration displacement of a speaker, comprising: a vibration system provided with a movable electrode plate; a magnetic circuit system; and a fixed electrode plate arranged below the vibration system and opposite the movable electrode plate, where the movable electrode plate and the fixed electrode plate compose a capacitance. Also disclosed is a dual-effect device for audio-electric conversion, also comprising an impedance transformer connected to the capacitance, where the impedance transformer comprises a field-effect transistor and a diode. The present invention arranges the movable electrode plate of the capacitance on the vibration system, arranges the fixed electrode plate below the vibration system at a fixed position, allows the actual displacement of the vibration system to be calculated by detecting a change in the capacitance when the vibration system vibrates, thus allowing the power of a speaker device to be lowered when the actual displacement of the vibration system exceeds a safety threshold. For an electronic device employing this speaker structure, real-time detection of the displacement of a vibration system of a speaker product can be implemented at an electronic device system end.
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Inventors:
SHAO MINGHUI (CN)
YANG JIANBIN (CN)
YANG JIANBIN (CN)
Application Number:
PCT/CN2015/095680
Publication Date:
October 06, 2016
Filing Date:
November 26, 2015
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R9/02; H04R9/06; H04R29/00
Foreign References:
| CN104780489A | 2015-07-15 | |||
| CN204518064U | 2015-07-29 | |||
| CN102128641A | 2011-07-20 | |||
| CN1198759A | 1998-11-11 | |||
| CN2519575Y | 2002-10-30 |
Attorney, Agent or Firm:
BEYOND TALENT PATENT AGENT FIRM (CN)
北京博雅睿泉专利代理事务所（特殊普通合伙） (CN)
北京博雅睿泉专利代理事务所（特殊普通合伙） (CN)
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