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. 31, 2026
Filed:
Mar. 21, 2023
Alps Alpine Co., Ltd., Tokyo, JP;
Atsushi Matsuda, Miyagi-ken, JP;
Alps Alpine Co., Ltd., Tokyo, JP;
Abstract
A capacitance detection device for detecting a capacitance between a detection electrode and an object in proximity to the detection electrode includes the detection electrode configured to detect a capacitance between the detection electrode and the object, an active shield electrode disposed in proximity to the detection electrode, a voltage output circuit for outputting an alternating voltage to be supplied to the active shield electrode, a first adjustment circuit for adjusting an amplitude of an alternating voltage output from the voltage output circuit, and a first operational amplifier for amplifying and outputting a voltage difference between an inverting input terminal thereof connected to one end of the detection electrode and a non-inverting input terminal thereof to which an alternating voltage adjusted by the first adjustment circuit is applied. The detection electrode has, between one end and the other end thereof, a resistance value from 5 kΩ to 270 kΩ.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile