Mitsubishi Electric Corporation

Sohei Osawa

Akihito Yamamoto

Kentaro Mori

Yuichi Sasaki

A touch panel device includes processing circuitry to generate coordinate information indicating a position of a touch operation; to generate a pressing value corresponding to pressing force applied to an operation surface of a touch panel; to classify the positions of touch operations included in operation logs each being data including the coordinate information and information indicating the pressing value into groups and to determine group regions respectively corresponding to the groups; to determine a threshold value of the pressing value in each of the group regions based on the operation logs; and to judge that the touch operation is a depressing operation with pressing force if the pressing value is greater than or equal to the threshold value and to judge that the touch operation is a normal touch operation other than the depressing operation if the pressing value is less than the threshold value.

Touch panel device, operation identification method, and storage medium storing operation identification program

A touch panel device includes processing circuitry to generate coordinate information based on a signal outputted from the touch panel and to output a detection value based on depressing force. The processing circuitry previously stores a plurality of pieces of predictive detection value information, selects a piece of predictive detection value information based on a gradient of the detection value, obtains a final predictive detection value that the predictive detection value finally reaches by using the selected predictive detection value information, obtains a present predictive detection value by using the selected predictive detection value information, and executes a correction process of reducing influence of a memory effect by bringing a present detection value close to the final predictive detection value when an absolute value of a difference between the present predictive detection value and the present detection value is less than or equal to a predetermined threshold value.

Touch panel device, memory effect correction method, and storage medium storing memory effect correction program

A touch panel device includes: a touch panel; an elastic member that supports the touch panel; a plurality of depressing force sensors arranged at installation positions where depression or upward warps of the touch panel occur due to the application of depressing force; and processing circuitry to obtain touch coordinates; to obtain a plurality of detection values corresponding to the sensor signals; and to load a plurality of predetermined depressing force calculation modes from a storage storing a plurality of regions on the operation surface and the plurality of predetermined depressing force calculation modes corresponding to the plurality of regions, to select a depressing force calculation mode for a region corresponding to the touch coordinates from the plurality of depressing force calculation modes, and to calculate the depressing force by using the selected depressing force calculation mode and the plurality of detection values.

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Tokyo, Japan

Sohei Osawa