Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Touch detection device

A technology of touch detection and detection part, which is applied in the direction of instruments, electrical digital data processing, and input/output process of data processing, etc. It can solve the problems of shortening the elapsed time of long-press operation, false detection, etc., and achieve the purpose of suppressing the reduction of detection accuracy Effect

Pending Publication Date: 2021-10-22
KK TOKAI RIKA DENKI SEISAKUSHO
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in this method, the time for updating the reference value can be shortened by shortening the elapsed time after the long-press oper

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Touch detection device
  • Touch detection device
  • Touch detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0029] exist figure 1 The touch detection device 10 of the present embodiment is shown in a schematic configuration diagram.

[0030] Such as figure 1 As shown, the touch detection device 10 includes a touch operation unit 12 as a sensor unit, and a controller 14 . The touch operation unit 12 includes a sensor electrode 16 formed in a sheet shape using a conductive material.

[0031] In the touch operation part 12, when the operator (for example, the operator's fingertip) approaches the sensor electrode 16 (touch operation on the touch operation part 12), electrostatic capacitance is generated between the sensor electrode 16 and the operator, and the sensor electrode 16 The capacitance (capacitance value) Cap in 16 changes. Either a self-capacitance method or a mutual-capacitance method can be applied to such a touch operation unit 12 , and in this embodim...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a touch detection device that suppresses a reduction in detection accuracy of a touch operation. When a touch operation unit is pressed for a long time (Ts) or more, a controller updates a reference capacitance value (Cbase), which is a reference for detecting a threshold value (Cth) of the touch operation, on the basis of an electrostatic capacitance value (Cap). The update of the reference capacitance value sets the electrostatic capacitance value before the decrease as an initial value (C0), and sets the electrostatic capacitance value ([delta] C) according to whether the electrostatic capacitance value is greater than or equal to the predetermined capacitance value (Cref) (steps 120 to 128). Then, the electrostatic capacitance value after the change of the electrostatic capacitance value with respect to the initial value reaches the electrostatic capacitance value ([delta] C) is set as the reference capacitance value (steps 132-140). As a result, it is possible to appropriately update the reference capacitance value with respect to the threshold value, and it is possible to suppress a reduction in detection accuracy of the touch operation.

Description

technical field [0001] The invention relates to a touch detection device. Background technique [0002] In the touch input device of Patent Document 1, in a touch panel in which a plurality of driving electrodes and a plurality of sensor electrodes are overlapped in a grid pattern to form a sensor pattern, the controller detects the electrostatic capacitance at each intersection of the driving electrodes and the sensor electrodes. Changes to detect touch operations. In this touch input device, the reference value is updated by keeping the electrostatic capacitances of the intersection portions within a constant range for a constant time. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2017-111507 [0004] However, in a touch sensor, when the reference value is updated by keeping the capacitance within a constant range for a constant time, not only the update period of the reference value becomes longer but also the timing of updating the reference value is limite...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F3/044G06F3/041
CPCG06F3/044G06F3/0416
Inventor 福原慎吾清水纪博伊藤羊平
Owner KK TOKAI RIKA DENKI SEISAKUSHO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com