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:
Jul. 23, 2013
Filed:
Mar. 08, 2010
Takeshi Sasaki, Osaka, JP;
Keisuke Kuroda, Osaka, JP;
Takeshi Sasaki, Osaka, JP;
Keisuke Kuroda, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In an angular velocity sensor, there is generated a first parasitic capacitance generated between a first driving electrode and a sensing electrode, and there is generated a second parasitic capacitance generated between a second driving electrode and the sensing electrode. The ratio of the amplitude of a first drive signal to the amplitude of a second drive signal is set to the reciprocal of the ratio of the first parasitic capacitance to the second parasitic capacitance. This allows the noise contents generated by capacitive coupling to be efficiently offset, thereby improving detection accuracy of an angular velocity sensing signal.