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. 07, 2023
Filed:
Aug. 27, 2021
Applicant:
Alps Alpine Co., Ltd., Tokyo, JP;
Inventor:
Tatsumi Fujiyoshi, Miyagi-ken, JP;
Assignee:
Alps Alpine Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/041 (2006.01); G06F 3/044 (2006.01); B62D 1/04 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0418 (2013.01); B62D 1/04 (2013.01); G06F 3/044 (2013.01); G06F 2203/04107 (2013.01);
Abstract
This detection device includes a sensor electrode, a shield electrode, which has a parasitic capacitance between the sensor electrode and the shield electrode and is driven by an AC voltage, a detection circuit, which is electrically connected to the sensor electrode and the shield electrode and detects the electrostatic capacitance of the sensor electrode, a capacitor, which is connected in series between the sensor electrode and the detection circuit, and a bias unit, which biases the potential of the sensor electrode via a resistor.