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:
Jan. 09, 2018
Filed:
Mar. 26, 2014
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Takehiko Shindo, Ina, JP;
Masahiro Oshio, Shiojiri, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01P 15/00 (2006.01); G01P 3/14 (2006.01); G01P 15/08 (2006.01); G01P 15/097 (2006.01); G01C 19/5776 (2012.01);
U.S. Cl.
CPC ...
G01P 3/14 (2013.01); G01C 19/5776 (2013.01); G01P 15/08 (2013.01); G01P 15/097 (2013.01);
Abstract
A physical quantity sensor includes: a sensor element which detects predetermined physical quantity; a driving circuit which generates a driving signal of the sensor element; and an AGC circuit which controls the driving signal at a constant level according to a reference voltage, based on an output signal of the sensor element, in which the reference voltage is variable.