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.

Date of Patent:
Sep. 27, 2016

Filed:

Mar. 20, 2015
Applicant:

Seiko Instruments Inc., Chiba-shi, Chiba, JP;

Inventors:

Tomoki Hikichi, Chiba, JP;

Minoru Ariyama, Chiba, JP;

Kentaro Fukai, Chiba, JP;

Takemasa Miura, Chiba, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 33/00 (2006.01); G01R 33/02 (2006.01); G01R 33/06 (2006.01); G01R 33/07 (2006.01); G01R 1/30 (2006.01);
U.S. Cl.
CPC ...
G01R 33/0023 (2013.01); G01R 33/07 (2013.01);
Abstract

The sensor device includes: a physical quantity voltage conversion element; a differential amplifier; a first capacitor that includes one terminal connected to a first output terminal of the differential amplifier; a comparator; a low pass filter circuit arranged at the first output terminal of the differential amplifier; a control circuit configured to on/off control the physical quantity voltage conversion element, the differential amplifier, the comparator, and the low pass filter circuit; and a logic circuit configured to output a result of operation processing performed on an output signal of the comparator. The logic circuit is configured to: successively verify, in a case where there is a change between a previous logic output and a first logic output, the logic outputs a plurality of times; and output a control signal to the control circuit so that the low pass filter circuit is turned on in a second signal processing period and thereafter.


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