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Method and system for high-precision calculation of infrared touch screen

An infrared touch screen, high-precision technology, applied in the input/output process of calculation, data processing, instruments, etc., can solve the problems of inaccurate logical analysis coordinates, loss of optical path details, complex circuit design, etc., to improve touch accuracy, The effect of reducing circuit cost and reducing requirements

Active Publication Date: 2017-08-15
BEIJING IRTOUCH SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the binary optical path processing method of occlusion or non-occlusion, which is non-0 or 1, leads to the loss of detailed information of the optical path, resulting in inaccurate coordinates of subsequent logical analysis
[0004] In order to achieve more accurate coordinates, most of the current technologies increase the density of the infrared light path to complete the approach to the boundary of the touch object, resulting in more complex circuit design and denser arrangement of lamp tubes, resulting in a substantial increase in cost

Method used

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  • Method and system for high-precision calculation of infrared touch screen
  • Method and system for high-precision calculation of infrared touch screen
  • Method and system for high-precision calculation of infrared touch screen

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Embodiment 1

[0048] Such as Figure 4 As shown, this embodiment provides a method for high-precision calculation of an infrared touch screen, the method comprising:

[0049] S101. Acquire blocked information on the infrared touch screen, where the blocked information includes blocked position information and blocked light path energy information;

[0050] Specifically, according to the on-off of the light path, record the information of the corresponding blocked light path; the infrared light path is transmitted and received through the transmitting light and the receiving light.

[0051] Further, before acquiring the blocked information on the infrared touch screen includes:

[0052] The signal energy obtained by the receiving lamp on the infrared touch screen is collected, and the blocked state of the current optical path is judged.

[0053] Further, the determination of the current blocked state of the optical path includes:

[0054] Set the noise experience threshold;

[0055] Comp...

Embodiment 2

[0078] Such as Figure 8 As shown, the present embodiment provides a system for high-precision calculation of an infrared touch screen, and the system includes:

[0079] The blocked information acquisition module 210 is configured to obtain blocked information on the infrared touch screen, the blocked information includes blocked position information and blocked light path energy information;

[0080] An energy change obtaining module 220, configured to obtain the energy change of the blocked light path according to the energy information of the blocked light path and a corresponding energy reference value, where the energy reference value is the energy information before the light path is not blocked;

[0081] An optical path weight obtaining module 230, configured to obtain the weight of the blocked optical path according to the energy variation of the blocked optical path and the corresponding energy reference value;

[0082] The coordinate weight obtaining module 240 is c...

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Abstract

The invention discloses a method and a system for high-precision calculation of an infrared touch screen. The method comprises the steps that sheltered information on the infrared touch screen is acquired, wherein the sheltered information comprises sheltered position information and energy information of a sheltered light path; an energy variation of the sheltered light path is obtained according to the energy information of the sheltered light path and a corresponding energy reference value, wherein the energy reference value is energy information of a light path not sheltered; a weight of the sheltered light path is obtained according to the energy variation of the sheltered light path and the corresponding energy reference value; and a coordinate weight of the infrared touch screen is obtained according to the weight of the sheltered light path. Through the method and the system, touch precision is improved, and the requirement for a touch object diameter is lowered; user experience is improved in the field of infrared touch screens; meanwhile, high-density layout of lamp tubes is reduced, and circuit cost of the infrared touch screen is further lowered.

Description

technical field [0001] The invention relates to the field of infrared touch screens, in particular to a method and system for high-precision calculation of infrared touch screens. Background technique [0002] At present, the size of the touch object supported by the infrared touch screen and the touch accuracy have become an important index parameter to measure the user's touch experience; among them, the smallest touch object is used to describe the touch screen that can support touch and output the touch point diameter of the touch object; touch Accuracy is to touch the specified physical position of a given touch object on the touch screen, and it is used to describe the deviation value between the actual physical position of the touch screen and the output of the touch screen; the smaller the touch object, the better it can meet the needs of more users, and the higher the touch accuracy, the better it can be. Improve product performance, so the size of the touch objec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/042
CPCG06F3/0421
Inventor 满庆奎
Owner BEIJING IRTOUCH SYST CO LTD
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