Kabushiki Kaisha Tokai Rika Denki Seisakusho

Toyota Jidosha Kabushiki Kaisha

Smk Corporation

Keiji Murase

Osamu Yoshikawa

Takao Imai

Katsuhide Kumagai

Masahiko Miyata

Kenji Iwasaki

Naoki Kamiya

Hiroshi Shikata

Yuji Takai

Toru Ueno

Seiya Murase

Kazuki Yamaguchi

Hiroki Noritake

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.

Touch-type input device

A touch sensor switch for easily taking out an output of a touch sensor with high reliability. Push-type switching elementsA,B, andC are mounted on a printed circuit board, a rubber domeis provided with expanded portionsA,B, andC for housing the switching elementsA,B, andC, the switching elementsA,B, andC are provided with conductive filmsA,B, andC on an outer surface and a lower face, conductive partsA,B, andC are provided at a conductive part such as an upper surface of the expanded portionsA,B, andC of the rubber dome, or a wiring pattern of the printed circuit board, and the conductive filmsA,B, andC contact with the conductive partsA,B, andC constantly by a biasing force of the switching elementsA,B, andC regardless the operation of switch knobsA,B, andC.

Touch sensor switch

Growing community of inventors

Aichi, Japan

Keiji Murase