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:
Mar. 28, 2017
Filed:
Mar. 30, 2012
Applicant:
Troels Andersen, Smorum, DK;
Inventor:
Troels Andersen, Smorum, DK;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 3/04 (2006.01); H04R 19/04 (2006.01); H04R 3/00 (2006.01);
U.S. Cl.
CPC ...
H04R 3/04 (2013.01); H04R 19/04 (2013.01); H04R 3/007 (2013.01);
Abstract
A microphone comprising an automatic bias control providing a better signal quality is proposed. The microphone comprises a bias control circuit that can provide two or more voltages to the microphone's capacitor. The bias control circuit increases the voltage if the collapse frequency is low and decreases the voltage if the collapse frequency is high.