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:
Jun. 04, 2019
Filed:
Mar. 30, 2017
Tokyo Parts Industrial Co., Ltd., Gunma-ken, JP;
Mamoru Kubo, Gunma-ken, JP;
Abstract
The resonance frequency of an LCR resonance circuit is fand the determination voltage signal is V, when an object is not in the proximity of a sensor electrode. The resonance frequency of the LCR resonance circuit is fand the determination voltage signal is V, when a human body is in proximity of the sensor electrode. The resonance frequency of the LCR resonance circuit is fand the determination voltage signal is V, when water is in the proximity of the sensor electrode. The LCR resonance circuit has the relationship f>f>f. A control unit controls a high-frequency signal Sso as to satisfy the relationship V>V>V, and a human body or water being in the proximity of the sensor electrode is distinguished.