Positioning method and system for infrared touch screen

A technology of infrared touch screen and positioning method, which is applied in the direction of instruments, electrical digital data processing, and data processing input/output process, etc. time, increase the scanning frequency, and improve the effect of stability and fluency

Active Publication Date: 2014-12-03
SHENZHEN WAVES EDUCATION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the positioning method of the above-mentioned infrared touch screen device generally relies on the recognition algorithm of the geometric figure structure, and its process is complicated and the data is redundant, which also makes the hard

Method used

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  • Positioning method and system for infrared touch screen
  • Positioning method and system for infrared touch screen
  • Positioning method and system for infrared touch screen

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] The invention provides an infrared touch screen positioning method, comprising the following steps: providing an infrared touch screen, a plurality of infrared emission tubes arranged along the horizontal upper frame of the infrared touch screen, and multiple infrared emission tubes arranged along the horizontal lower frame of the infrared touch screen Infrared receiving tubes, each infrared emitting tube corresponds to three asymmetrically distributed infrared receiving tubes, each infrared receiving tube corresponds to three asymmetrically distributed infrared emitting tubes, and the multip...

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Abstract

The invention discloses a positioning method and system for an infrared touch screen. The method comprises the following steps: providing an infrared touch screen, a plurality of infrared transmitting pipes and a plurality of infrared receiving pipes, wherein a plurality of left-leaning first oblique lines and right-leaning second oblique lines are formed between the infrared transmitting pipes and corresponding infrared receiving pipes; diagnosing positions of at least two touch notches on the infrared touch screen; recording a plurality of vertical lines and the first oblique lines passing the touch notches; calculating and obtaining a plurality of intersection points of the vertical lines and the first oblique lines; detecting whether all the intersection points shield the second oblique lines or not; confirming that the intersection points are real touch points if the intersection points shield the second oblique lines; calculating and obtaining the coordinate values of the real touch points. According to the invention, sweep time of the infrared transmitting pipes and the infrared receiving pipes is shortened; sweep frequency, response speed and positioning accuracy of the infrared touch screen are improved; stable fluency of positioning and touching of the infrared touch screen is improved.

Description

technical field [0001] The invention relates to the technical field of infrared touch screens, in particular to an infrared touch screen positioning method and system. Background technique [0002] As a new type of computer input device, touch screen makes human-computer interaction more intuitive and greatly facilitates the work and life of users. Therefore, touch screen has been widely used in public information, office automation equipment, communication equipment and other fields. [0003] At present, the existing infrared touch screen devices usually have infrared emitting tubes and infrared receiving tubes in two straight directions, horizontal and vertical, and the two-way infrared emitting tubes and infrared receiving tubes together form a positioning plane. Whether an infrared signal is blocked between the corresponding infrared emitting tube and the infrared receiving tube changes, and the position coordinates of the touch point are calculated and determined accord...

Claims

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Application Information

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IPC IPC(8): G06F3/042
Inventor 范文英
Owner SHENZHEN WAVES EDUCATION EQUIP
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