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:
Aug. 31, 2021
Filed:
Dec. 14, 2020
Kostal Automobil Elektrik Gmbh & Co. KG, Luedenscheid, DE;
Matthias Seifert, Bochum, DE;
Christian Brueggemann, Bochum, DE;
KOSTAL Automobil Elektrik GmbH & Co. KG, Luedenscheid, DE;
Abstract
A capacitive sensor system for touch detection includes a sensor surface, a first sensor electrode, a second sensor electrode, and an evaluation device. The sensor electrodes are both situated on and border the sensor surface. The first sensor electrode has a first closed conductor loop and the second sensor electrode has a second closed conductor loop. The first closed conductor loop surrounds the second closed conductor loop without the closed conductor loops touching each other. Each sensor electrode generates a sensor signal that depends on a position of a touch of an object on the sensor surface relative to the closed conductor loop of the sensor electrode. The evaluation device detects the touch based on a comparison of a ratio value to a threshold value, wherein the ratio value is a ratio of (i) a difference and (ii) a sum of the sensor signals.