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. 27, 2017
Filed:
Jun. 23, 2015
Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Smk Corporation, Tokyo, JP;
Takao Imai, Aichi, JP;
Toru Ueno, Aichi, JP;
Keiji Murase, Aichi, JP;
Yuji Takai, Aichi, JP;
Hiroki Noritake, Aichi, JP;
Hiroshi Shikata, Nisshin, JP;
Naoki Kamiya, Aichi, JP;
Osamu Yoshikawa, Tokyo, JP;
KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO, Aichi, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-Ken, JP;
SMK CORPORATION, Tokyo, JP;
Abstract
A touch-type input device includes a touch panel including drive electrodes and sensor electrodes. Capacitors are formed at intersections of the drive electrodes and sensor electrodes. A controller determines whether a conductive foreign matter exists on the touch panel from raw data values indicating changes in the capacitances of the capacitors from initial reference values. The controller determines touching of the touch panel from control data values indicating changes in the capacitances of the capacitors from control reference values changed when a conductive foreign matter exists. When the raw data values indicate existence of a conductive foreign matter, the controller sets the control reference value of each capacitor to a raw data reference value corresponding to the present raw data value. The controller updates the initial reference value when the touch-type input device is activated and updates the control reference value when the control reference value is erroneous.