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Multi-touch positioning method and multi-touch screen

A technology of multi-point touch screen and positioning method, which is applied in the direction of instruments, calculations, electrical digital data processing, etc., can solve the problem of not being able to recognize multiple touch points at the same time, and achieve the effect of simple method and high recognition accuracy

Active Publication Date: 2010-06-09
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are several touch screen technologies in the prior art, including resistive, infrared, infrared, acoustic surface, and electromagnetic, etc., but these touch screens, when multiple points on the surface of the touch screen are Finger touch to complete the rotation, zoom and other operations of the picture; use multiple fingers to complete the dragging of the video being played, and complete the window transformation at the same time; use multiple fingers to complete operations such as dragging and deleting multiple folders, touch screen Only one touch point can be recognized, but multiple touch points cannot be recognized at the same time

Method used

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  • Multi-touch positioning method and multi-touch screen

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Embodiment Construction

[0037] figure 1 It is a schematic flowchart of the multi-touch positioning method provided by Embodiment 1 of the present invention, as shown in figure 1 As shown, this embodiment may include the following steps:

[0038] Step 101, a first infrared generator disposed at a first corner of a display panel emits infrared at a first wavelength, and a second infrared generator disposed at a second corner emits infrared at a second wavelength.

[0039] figure 2 It is a schematic diagram of the principle of the multi-touch positioning method provided by Embodiment 1 of the present invention. The first corner and the second corner are adjacent corners, such as figure 2 As shown, the infrared generator 10 and the infrared generator 11 are respectively located at two corners of the display panel, as figure 2 As shown in point A and point B, the emission angles of the infrared generator 10 and the infrared generator 11 are both greater than or equal to 90 degrees, and the wavelengt...

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Abstract

The invention relates to a multi-touch positioning method and a multi-touch screen. The multi-touch positioning method comprises the following steps: a first infrared generator arranged at a first corner of a display panel transmits infrared rays in first wavelength and a second infrared generator arranged at a second corner transmits infrared rays in second wavelength; a first infrared image sensor arranged at the opposite corner of the first corner receives the infrared rays in first wavelength and generates the first infrared image, and a second infrared image sensor arranged at the opposite corner of the second corner receives the infrared rays in second wavelength and generates the second infrared image; and the first infrared image and the second infrared image are processed to determine at least a touch point. The invention adopts the infrared generators arranged at the corners of the display panel and corresponding infrared image sensors to acquire touch signals, thus ensuring the touch screen can simultaneously recognize multiple touch points, and the recognition accuracy of the touch points is high and the method is simple and practicable.

Description

technical field [0001] The invention relates to a touch screen, in particular to a multi-point touch positioning method and a multi-point touch screen. Background technique [0002] A touch screen is a device that allows users to perform operations by simply touching the display screen with a finger or a stylus. It is widely used in many systems, such as: computer desktops, mobile phones, digital cameras, MP3 / MP4, notebooks and ATM machines etc. Currently, a touch screen may generally include a touch panel, a display panel, and a control processing system. The touch panel records the touch event, and sends the touch signal generated by the touch event to the control processing system. The control processing system processes the touch signal and executes corresponding operations. [0003] There are several touch screen technologies in the prior art, including resistive, infrared, infrared, acoustic surface, and electromagnetic, etc., but these touch screens, when multiple ...

Claims

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Application Information

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IPC IPC(8): G06F3/042
CPCG06F3/0428G06F2203/04808G06F3/0421
Inventor 王延峰
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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