An optical touch system and positioning method thereof

一种触控系统、光学式的技术，应用在仪器、电数字数据处理、数据处理的输入/输出过程等方向

Inactive Publication Date: 2016-04-13
TRENDON TOUCH TECHNOLOGY CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Traditional optical touch screens have a common shortcoming, that is, the number of sensors must be increased or decreased according to the size of the touch screen in order to be applicable to different sensing ranges
Moreover, the existing touch screens are basically customized products, which is a big burden for manufacturers

Method used

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  • An optical touch system and positioning method thereof
  • An optical touch system and positioning method thereof
  • An optical touch system and positioning method thereof

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Embodiment Construction

[0029] In order to further clarify the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings.

[0030] The optical touch system in the present invention is based on the theory of stereo vision: the reason why people produce stereo vision is due to the difference in the angle of view of the left and right eyes, the left eye sees the object slightly to the left, and the right eye sees the object slightly to the right , transmitted to the brain via the optic nerve, and then the brain integrates the two images into a single stereoscopic image. The invention combines the principle of photography and the theory of stereo vision, and the two image sensors adopted are equivalent to the left and right eyes of a person, so as to realize the precise positioning of the touch points.

[0031] Photography is to record three-dimensional data on a two-dimensional medium. For traditional cameras, this me...

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Abstract

The present invention proposes an optical touch system and its positioning method, which uses at least two adjustable linear image sensors to obtain image information, so that the position of the image sensors can be adjusted to adapt to touch screens with different screen sizes. The sensing area covers the entire screen without increasing the number of sensors; in addition, the positioning method of the optical touch system proposed by the present invention makes the spectrum emitted by the stylus corresponding to the image sensor, which can eliminate the complicated image processing process, Thereby improving the speed and accuracy of touch response.

Description

technical field [0001] The present invention relates to an optical touch system, in particular to an optical touch system and a positioning method thereof which adopt an adjustable positioning method to determine a touched position. Background technique [0002] Common types of touch screens include resistive, capacitive, acoustic, and optical. The resistive touch screen uses a spacer to separate two layers of indium tin oxide (Indium Tin Oxide, ITO) conductive layers. When in use, it uses pressure to make the upper and lower electrodes conductive, and detects the voltage change on the screen after the electrodes are conductive, so that Calculate the location of the touch. The capacitive touch screen uses the capacitance change generated by the electrostatic combination between the arranged transparent electrodes and the human body to calculate the position coordinates of the contact point. The acoustic wave touch screen converts electrical signals into ultrasonic waves in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/042
CPCG06F3/042G06F3/0418G06F3/0425
Inventor 吴西恩苏圣镔
Owner TRENDON TOUCH TECHNOLOGY CORPORATION
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