Touch screen calibrating method and system

A calibration method and touch screen technology, applied in the input/output process of data processing, instruments, electrical and digital data processing, etc., can solve the problems of inability to recover through calibration, decrease in accuracy, calibration, etc.

Active Publication Date: 2014-05-14
TIANJIN XITONG ELECTRONICS EQUIP CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] (1) The calibration method uses touch and lift as mark points. It is difficult to touch the best position in an instant when manually collecting contacts, and it needs to be moved
Ordinary sampling points do not consider this problem, resulting in a decrease in accuracy
[0005] (2) The existing calibration methods do not have fast and easy-to-use optical sensor conversion parameters, and cannot be calibrated under the condition that the position of the optical sensor changes. After long-distance transportation or falling, the accuracy drop caused by small changes in the structure cannot be recovered through calibration
When the production place and the place of use are far away, the changes in thermal expansion and contraction of the structure caused by different climates will also cause the decrease in accuracy and cannot be recovered.

Method used

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  • Touch screen calibrating method and system
  • Touch screen calibrating method and system

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Embodiment Construction

[0086] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0087] Refer below Figure 1 to Figure 3 The method for calibrating the touch screen according to the embodiment of the present invention will be described. Among them, the touch screen can be an optical touch screen, which can convert the position or displacement of components into a code form through photoelectricity, and is an input device or an input and output combination device for interaction between a user and a computer. The touch screen calibration method of the present invention can be used to calibrate the touch scre...

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Abstract

The invention provides a touch screen calibrating method which comprises the steps of switching the work state of a touch screen from the normal touch mode to the calibration mode, conducting regular calibration or deep calibration on a touch spot according to the touch precision change of the touch screen, and switching the work state of the touch screen from the calibration mode to the normal touch mode after the regular calibration or deep calibration is finished. The invention further discloses a touch screen calibrating system. According to the touch screen calibrating method and system, precision deterioration of the touch screen caused by transportation damage or using environment difference can be effectively amended, adaptive capacity is good, and manual operation errors can be removed effectively to realize higher precision.

Description

technical field [0001] The present invention relates to the field of touch technology, in particular to a calibration method and system for a touch screen. Background technique [0002] Since the touch screen and the display screen are not completely fixed and overlapped, the conversion relationship from the physical coordinates of the touch screen to the pixel coordinates of the display screen is not fixed. It is necessary to obtain the conversion relationship between them in order to make the touch point and the display point coincide accurately. This process is the calibration process of the touch screen. At the same time, the physical coordinates come from the information of the optical sensor, so precise conversion parameters of the optical sensor are required to ensure the accuracy of the physical coordinates of the touch screen. [0003] The existing touch screen calibration method has the following defects: [0004] (1) The calibration method uses touch and lift as...

Claims

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Application Information

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IPC IPC(8): G06F3/042
Inventor 买强王炜张霞施飞李洲强
Owner TIANJIN XITONG ELECTRONICS EQUIP CO LTD
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