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:
Aug. 05, 2003
Filed:
Sep. 26, 2001
Applicant:
Inventors:
Teruaki Nagahara, Tokyo, JP;
Yoshikazu Kaido, Tokyo, JP;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
G01P 1/5125 ;
U.S. Cl.
CPC ...
G01P 1/5125 ;
Abstract
An acceleration sensor which can improve precision during self-diagnosis operation. The acceleration sensor includes an amplifier circuit which amplifies a detection signal obtained by converting changes in capacitance between a movable electrode and a self-diagnosis electrode into an electric signal to output the amplified signal as a self-diagnosis signal. The amplifier factor of the amplifier circuit during self-diagnosis operation is controlled to be greater than the factor during non-self-diagnosis operation.