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:
Jun. 16, 2009
Filed:
May. 20, 2005
Lars Jørn Stenberg, Roskilde, DK;
Jens Kristian Poulsen, Hedehusene, DK;
Aart Zeger Van Halteren, Hobrede, NL;
Lars Jørn Stenberg, Roskilde, DK;
Jens Kristian Poulsen, Hedehusene, DK;
Aart Zeger Van Halteren, Hobrede, NL;
Sonion A/S, Roskilde, DK;
Abstract
A condenser microphone is provided having a transducer element. A diaphragm has an electrically conductive portion. A back-plate has an electrically conductive portion. A DC bias voltage element is operatively coupled to the diaphragm and the back-plate. A collapse detection element is adapted to determine a physical parameter value related to a separation between the diaphragm and the back-plate. A collapse control element is adapted to control the DC bias voltage element based on the determined physical parameter value.