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:
Apr. 09, 2013
Filed:
Mar. 06, 2008
Takeshi Uemura, Osaka, JP;
Toshiyuki Nozoe, Kyoto, JP;
Takeshi Uemura, Osaka, JP;
Toshiyuki Nozoe, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An acceleration sensor includes first and second opposed electrode units. The first opposed electrode unit includes a first electrode and a second electrode spaced away from and facing the first electrode, and provides a first capacitance. The second opposed electrode unit includes a third electrode and a fourth electrode spaced away from and facing the third electrode, and provides a second capacitance. The first and third electrodes are arranged along a first direction. A component of acceleration along the first direction applied to the object is detected based on the first and second capacitances. A control voltage is applied to the first and second opposed electrode units. The control voltage is changed when both of the first capacitance and the second capacitance simultaneously increase or decrease. This acceleration sensor detects the acceleration accurately.