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Capacitive touch screen and self-adaptation correction method and system of capacitive touch screen

A technology of capacitive touch screen and calibration method, which is applied in the direction of electrical digital data processing, instrumentation, input/output process of data processing, etc., can solve problems such as poor user experience and poor reliability of touch detection, so as to improve experience and reliability Sexuality, avoiding misjudgment of the trigger or the effect of trigger failure

Inactive Publication Date: 2014-01-01
SHENZHEN TCL IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide an adaptive correction method for a capacitive touch screen, which aims to solve the problem of poor touch detection reliability and poor user experience in the existing capacitive touch screen due to the fixed reference value

Method used

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Embodiment 1

[0038] Embodiment 1 of the present invention proposes an adaptive correction method for a capacitive touch screen, such as figure 1 shown, including:

[0039]Step S1: Collect the first group of sample detection data corresponding to a touch button on the touch panel in real time, and calculate the average value of the first group of sample detection data. Wherein, the first group of sample detection data includes at least two values ​​and is stored in an array form.

[0040] Step S2: Calculate the standard deviation of the first group of sample detection data, and judge whether the current data collection environment is stable by comparing the standard deviation of the first group of sample detection data with the pre-stored standard deviation threshold.

[0041] In Embodiment 1 of the present invention, the unstable environment means that the user's finger is approaching or leaving the touch key, the temperature and humidity changes around the touch screen, electromagnetic i...

Embodiment 2

[0055] Embodiment 2 of the present invention proposes an adaptive correction method for a capacitive touch screen, such as figure 2 shown. Different from Embodiment 1, in Embodiment 2, before calculating the standard deviation of the sample detection data, in order to filter out the pulse interference, the sample detection data is first digitally filtered by using the anti-pulse interference average filtering method, specifically, the Adaptive correction methods for capacitive touch screens include:

[0056] Step S4: Collect the first set of sample detection data corresponding to a touch button on the touch panel in real time, and use the anti-pulse interference average filtering method to digitally filter the first set of sample detection data to obtain the second set of sample detection data, and calculate The average value of the test data for the second set of samples. Wherein, the first set of sample detection data includes at least two values ​​and is stored in an arr...

Embodiment 3

[0107] Embodiment 3 of the present invention proposes an adaptive correction system for a capacitive touch screen, such as Figure 9 As shown, for the convenience of description, only the part related to the third embodiment of the present invention is shown.

[0108] In detail, the self-adaptive correction system for capacitive touch screen provided by Embodiment 3 of the present invention includes: a first collection module 1, which is used to collect in real time the first set of sample detection data corresponding to a touch button on the touch panel, and calculate the first The average value of the group sample detection data, wherein the first group of sample detection data includes at least two values, and is stored in the form of an array; the first environmental stability evaluation module 2 is used to calculate the standard deviation of the first group of sample detection data, By comparing the standard deviation of the first group of sample detection data with the p...

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Abstract

The invention belongs to the technical field of touch screen correction, and provides a capacitive touch screen and a self-adaptation correction method and system of the capacitive touch screen. The method and system comprise the steps of collecting a set of sample test data corresponding to a touch key, then calculating the standard deviation of the sample test data, judging whether the current data collection environment is stable or not by comparing the standard deviation with a standard deviation threshold value, and correcting a reference value in a self-adaptation mode when the environment is stable and the touch key is not in the trigger state. Therefore, the self-adaptation adjustment of the reference value along with the environmental changes is achieved, the problems that a touch point is triggered due to misjudgment or triggering fails are solved, the reliability of the touch test is improved, and user experience is improved.

Description

technical field [0001] The invention belongs to the technical field of touch screen correction, and in particular relates to a capacitive touch screen and an adaptive correction method and system thereof. Background technique [0002] As known, a typical capacitive touch screen includes a touch panel, vertical driving electrodes TX and horizontal detecting electrodes RX fabricated on a transparent conductive film of the touch panel, and a processing circuit connecting the driving electrodes TX and detecting electrodes RX. A coupling capacitor is formed where the drive electrode TX and the detection electrode RX intersect. When detecting the touch position, the finger’s touch action on the touch button on the touch panel will affect the coupling between the drive electrode TX and the detection electrode RX near the touch point, thereby changing the capacitance of the coupling capacitor. According to the change in capacitance, that is The coordinates of the touch point can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 张耿旭钟文涛张惠兴刘晓阳
Owner SHENZHEN TCL IND RES INST
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