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:
Oct. 04, 2016
Filed:
Dec. 17, 2014
Applicant:
Alps Electric Co., Ltd., Tokyo, JP;
Inventor:
Kiyoshi Sasai, Miyagi-ken, JP;
Assignee:
ALPS ELECTRIC CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G 7/18 (2006.01); H03K 5/1252 (2006.01); H03H 11/12 (2006.01); G06G 7/186 (2006.01); G06G 7/184 (2006.01);
U.S. Cl.
CPC ...
H03K 5/1252 (2013.01); G06G 7/184 (2013.01); G06G 7/186 (2013.01); H03H 11/126 (2013.01);
Abstract
In an integration mode, since a switch becomes OFF, a positive feedback path from an output terminal of an operational amplifier to a positive input terminal is blocked. Therefore, oscillation can be prevented even when a voltage of a signal line connected to a reference voltage supply point varies due to an impedance of the reference voltage supply point not being 0. In the integration mode, a resistor and a capacitor function as a noise filter. Further, in a reset mode, a switch becomes ON, and charge is accumulated in the capacitor depending on a reference voltage of the reference voltage supply point.