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A method for identifying the type of capacitive touch

A type of capacitive touch technology, applied in the field of data processing, can solve the problem of fine screen resolution

Active Publication Date: 2016-12-28
ZHUHAI ZHONGHUI MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the resolution of the screen is very fine, and it is impossible for the touch object to only touch a certain sensing point

Method used

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  • A method for identifying the type of capacitive touch
  • A method for identifying the type of capacitive touch
  • A method for identifying the type of capacitive touch

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0027] Such as figure 1 As shown in , assuming that the touch panel is evenly distributed with 54 sensing points, the corresponding coefficient threshold k finger_th =3.5,k palm_th =4.5; The method for identifying the capacitive touch type on the touch panel includes the following steps:

[0028] G1) Make a touch, and determine that the sensing point with the largest electrical change in the touch range in this touch is the B4_6 sensing point. Since its data value 240 is greater than the preset threshold value 160, set it as the center point; of course, the preset threshold value The size can be set according to the actual application;

[0029] G2) Intercept the data values ​​of each sensing point in the 3×3 matrix around the center point B4_6, and the size of the matrix can be selected according to the actual screen parameters;

[0030] G3) Circulate the data values ​​of each sensing point in the 3×3 matrix in turn except the center point, specifically as figure 2 , find...

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Abstract

The invention relates to a method for recognizing the touch type of a capacitor. The method comprises the following steps of firstly, setting coefficient thresholds kfinger_th and kpalm_th; secondly, finding out a sensing point with maximum electrical change within a touch range and setting the sensing point as a center point when a data value of the sensing point is greater than a preset threshold; thirdly, intercepting a data value of each sensing point in an n*n matrix around the center point; fourthly, sequentially circulating the data value of each sensing point except the center point within the n*n matrix and finding out a minimum value Amin and a maximum value Amax, wherein sensing points which respectively correspond to the Amin and the Amax are a small sensing point and a great sensing point; fifthly, accumulating data values of various sensing points except the center point, the small sensing point and the great sensing point in the n*n matrix to obtain Asum; sixthly, calculating a coefficient k of the center point with a data value A of the center point as a cardinal number; seventhly, comparing and judging the coefficient k with the kfinger_th and the kpalm_th to determine the touch type of the capacitor. According to the method disclosed by the invention, the touch type of the capacitor can be recognized accurately and quickly.

Description

【Technical field】 [0001] The present invention relates to a data processing method, in particular to a method for identifying capacitive touch types, wherein the capacitive touch types include the following three types: normal touch, fat finger touch, and large-area touch. 【Background technique】 [0002] In handheld devices such as smart phones and tablet computers, the application of touch technology is becoming more and more extensive, and the requirements for touch control are also getting higher and higher. During normal use, the following three types of touch may occur: [0003] Normal touch (Finger): The click range of a normal touch object. According to the size of the screen, the sensing range that can be most affected by a normal touch can be determined; [0004] Fat finger touch (Fat): The area of ​​the touch object is relatively large, such as the touch finger is fat, at this time the touch range may involve a sensing range greater than or equal to two normal poi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
Inventor 谭岳德朱定飞向铭
Owner ZHUHAI ZHONGHUI MICROELECTRONICS
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