Calibration method of touch display screen

A touch screen, calibration method technology, applied in the input/output process of data processing, instruments, electrical digital data processing and other directions, can solve problems such as being unsuitable for mass production, expensive calibration fixtures, and unfavorable for customers to seize the market. , to improve the calibration efficiency and calibration accuracy, the calculation speed is fast, and the touch effect is good.

Active Publication Date: 2013-12-25
GENERAL TOUCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the existing technology represented by the above-mentioned patent documents still has the following defects in the actual use process: 1. When calibrating, it is necessary to calibrate the controller to control the mechanical arm to drive the touch pen to click the preset point. Using this high-precision calibration Fixtures have the disadvantages of being expensive, not suitable for large-scale production and difficult to maintain; 2. During calibration, the touch pen needs to accurately cli

Method used

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  • Calibration method of touch display screen

Examples

Experimental program
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Embodiment 1

[0035] A method for calibrating a touch screen, comprising the steps of:

[0036] a. Set four calibration areas on the display screen through the calibration controller, and set at least three preset points with known coordinates in each calibration area, such as image 3 The three preset points of G, P, and Q are shown, and the coordinates of the preset points in each calibration area on the display are stored in the calibration controller, where four calibration areas can form a quadrilateral, and four The calibration area is located on the four corners of the quadrilateral;

[0037] b. Use the touch body with camera function to click the calibration area on the display screen one by one, and set the touch body to click on the O point in the calibration area (such as image 3 As shown), after the touch body clicks the four calibration areas in turn, a total of four sets of coordinates of the touch body on the touch screen are obtained. When the touch body clicks the calibra...

Embodiment 2

[0051] A method for calibrating a touch screen, comprising the steps of:

[0052] a. Set two calibration areas on the display screen through the calibration controller, the two calibration areas are set diagonally on the display screen, and at least three preset points are set in each calibration area, such as image 3 The three preset points of G, P, and Q are shown, and the coordinates of the preset points in each calibration area on the display are stored in the calibration controller;

[0053] b. Use the touch body with camera function to click two calibration areas in turn, each calibration area is clicked at least once, set the touch body to click on the O point of the calibration area (such as image 3 As shown), after the touch body clicks the two calibration areas in turn, a total of four sets of coordinates of the touch body on the touch screen are obtained. When the touch body clicks the calibration area, it uses the center of the touch body to click the calibration...

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Abstract

The invention discloses a calibration method of a touch display screen. The method comprises the following steps of a. setting at least two calibration areas on the display screen, and setting at least three preset points in each calibration area; b. using a touch body with a camera shooting function to click the calibration areas on the display screen one by one to obtain the coordinate of the touch body on a touch screen; c. imaging the preset points covered by the touch body and the click positions of the touch body, returning the imaging result back into a calibration controller, and calculating by the calibration controller to obtain the coordinate of the touch body on the display screen; d. using the calibration controller to obtain the calibration parameters according to the coordinate of the touch body on the display screen and the coordinate of the touch body on the touch screen; e. storing the obtained calibration parameters in the controller, and establishing a one-one mapping relationship between the coordinate of the touch body on the touch screen and the coordinate of the touch body on the display screen according to the calibration parameters to complete calibration. The calibration method can rapidly and accurately complete the calibration process, thus simplifying the calibration working procedures and improving the calibration efficiency and the calibration accuracy.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to a calibration method for a touch screen. Background technique [0002] The touch display screen includes a touch screen and a display screen. Among them, the touch screen includes a touch detection part, which is used to detect the user's touch position, and is installed in front of the display screen. The display screen is only used to display information, and the information is provided to the customer under the control of the controller. information to operate the touch screen. [0003] Due to the installation error and equipment quality error in the process of installing the touch screen in front of the display screen, this makes the touch screen and the display screen cannot be completely overlapped in the horizontal and vertical directions, that is, the touch screen and the display screen are in different plane coordinate systems. , and the coordinate system of the ...

Claims

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Application Information

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IPC IPC(8): G06F3/041
Inventor 尹华成何智星
Owner GENERAL TOUCH CO LTD
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