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.:
Date of Patent:
Sep. 09, 2014
Filed:
Dec. 07, 2010
Applicant:
Olafur Mar Josefsson, Hafnarfjordur, IS;
Inventor:
Olafur Mar Josefsson, Hafnarfjordur, IS;
Assignee:
Invensense, Inc., San Jose, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03G 3/00 (2006.01); H03G 11/00 (2006.01); H04R 3/00 (2006.01); H04R 19/00 (2006.01); H04R 19/04 (2006.01); H04R 19/01 (2006.01);
U.S. Cl.
CPC ...
H04R 3/00 (2013.01); H04R 19/005 (2013.01); H04R 2410/00 (2013.01); H04R 19/04 (2013.01); H04R 19/016 (2013.01);
Abstract
A control circuit monitors a signal produced by a MEMS or other capacitor microphone. When a criterion is met, for example when the amplitude of the monitored signal exceeds a threshold or the monitored signal has been clipped or analysis of the monitored signal indicates clipping is imminent or likely, the control circuit automatically adjusts a bias voltage applied to the capacitor microphone, thereby adjusting sensitivity of the capacitor microphone.