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:
Dec. 22, 2015
Filed:
Dec. 20, 2013
Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi, JP;
Smk Corporation, Tokyo, JP;
Syogo Yamaguchi, Aichi, JP;
Osamu Yoshikawa, Tokyo, JP;
KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO, Aichi, JP;
SMK CORPORATION, Tokyo, JP;
Abstract
A touch input device includes a touch panel, a controller, and a cancellation electrode. The touch panel includes a sensor pattern and an operation surface arranged above the sensor pattern. The sensor pattern includes first electrodes and second electrodes insulated from one another and arranged in a grid. The controller applies a drive pulse signal to the sensor pattern and detects a touch location where the operation surface of the touch panel is touched based on changes in capacitance of the sensor pattern. A cancellation pulse signal is applied to the cancellation electrode during application of the drive pulse signal. The cancellation pulse signal has a phase inverted from that of the drive pulse signal.