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:
Mar. 06, 2012
Filed:
Jan. 12, 2010
Applicant:
Noriyuki Murashima, Suwa, JP;
Inventor:
Noriyuki Murashima, Suwa, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01P 9/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A detection device includes a driver circuit and a detection circuit. The detection circuit includes an amplifier circuit which amplifies an output signal from a vibrator, a sensitivity adjustment circuit which performs sensitivity adjustment by variably controlling a gain, and a synchronous detection circuit which performs synchronous detection based on a reference signal. The sensitivity adjustment circuit is provided in the preceding stage of the synchronous detection circuit. The sensitivity adjustment circuit operates as a programmable-gain amplifier and a high-pass filter.