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:
Dec. 13, 2011
Filed:
Mar. 10, 2009
Applicants:
Tetsuya Motobayashi, Machida, JP;
Koichi Maezawa, Toyama, JP;
Inventors:
Tetsuya Motobayashi, Machida, JP;
Koichi Maezawa, Toyama, JP;
Assignees:
Kabushiki Kaisha Audio-Technica, Tokyo, JP;
National University Corporation University of Toyama, Toyama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01R 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A digital microphone comprises a ΔΣ modulator. The ΔΣ modulator has a resonator including a membrane which vibrates by receiving a sound wave and a wiring pattern disposed opposite to the membrane, an oscillator, including the resonator, for outputting an FM signal according to the vibration of the membrane, and a one-bit quantizer for outputting a one-bit quantized signal by sampling the FM signal with a high-frequency clock.