A method for identifying the type of capacitive touch

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...

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