logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9143870 B1

PDFFull Text
Date of Patent:
Sep. 22, 2015

Filed:

Nov. 09, 2012

Microphone system with mechanically-coupled diaphragms

Applicant:

Invensense, Inc., San Jose, CA (US);

Inventors:

Fang Liu, Wobum, MA (US);

Kuang L. Yang, Newton, MA (US);

Assignee:

INVENSENSE, INC., San Jose, CA (US);

Attorneys:

Maryam Imam

IPxLaw Group LLP

Primary Examiner:

Davetta W Goins

Assistant Examiner:

Oyesola C Ojo

Int. Cl.
CPC ...
H04R 1/04 (2006.01); H04R 19/04 (2006.01); H04R 7/20 (2006.01); H04R 3/00 (2006.01); H04R 31/00 (2006.01); B81B 3/00 (2006.01); H04R 19/00 (2006.01); H04R 1/28 (2006.01); H04R 7/06 (2006.01);
U.S. Cl.
CPC ...
H04R 19/04 (2013.01); B81B 3/0056 (2013.01); H04R 3/005 (2013.01); H04R 7/20 (2013.01); H04R 31/006 (2013.01); B81B 2201/0221 (2013.01); B81B 2201/0257 (2013.01); H04R 1/2807 (2013.01); H04R 7/06 (2013.01); H04R 19/005 (2013.01);
Abstract

A microphone system has two diaphragms and are mechanically interconnected such that they respond in antiphase to an acoustic signal impinging on one of the diaphragms. The two diaphragms produce two variable capacitances that vary proportionately but inversely to one another. Voltage signals produced by the two variable capacitances are summed to provide an output signal proportional to the acoustic signal, but with greater sensitivity than a single-diaphragm microphone.

Find Patent Forward Citations

Liu, Fang. (2015). Microphone system with mechanically-coupled diaphragms (U.S. Patent No. 9143870). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9143870

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…