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Touch system and multi-point positioning method

A technology of touch positioning and touching objects, which is applied in the direction of instruments, electrical digital data processing, and data processing input/output process, etc., and can solve the problems of multi-point positioning difficulty and so on.

Inactive Publication Date: 2013-06-19
BEIJING UNITOP NEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But now most touch screens can only solve single-point positioning on the touch screen, and it is difficult to achieve multi-point positioning

Method used

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  • Touch system and multi-point positioning method

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] The "main touch positioning system" described in the embodiments of the present invention refers to a touch system capable of positioning touch objects, which is used to locate touch objects to obtain preliminary position information of touch objects, such as electronic whiteboards, resistive touch screens , infrared touch screen, projected capacitive touch screen, optical touch screen, surface acoustic wave touch screen, bending wave touch screen, etc., but the main touch positioning system does not include surface acoustic wave touch screen.

[0022] figure 1 It is a schematic structural diagram of a touch system implementing the present invention, the touch system includes a main touch positioning system, a transmitting transducer 112a, a receiving transducer 112b, a pair of reflective arrays 105, 106 and a processing unit 107 . The...

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Abstract

The invention discloses a touch system and a multi-point positioning method. The touch system comprises a main touch positioning system, a transmitting transducer, a receiving transducer, a pair of reflective arrays and a processing unit, wherein the main touch positioning system is used for positioning a touch object to obtain initial positional information of the touch object; the transmitting transducer is used for emitting a sound wave; the receiving transducer is used for receiving the sound wave emitted from the transmitting transducer; the reflective arrays are used for propagating thesound wave; and the processing unit is connected with the main touch positioning system and the receiving transducer and is used for determining one-dimensional positional information of the touch object according to the sound wave information received by the receiving transducer, determining the positional information of the touch object through combining the one-dimensional positional information with the initial positional information of the touch object, and then sending the positional information to a master controller. In the invention, the touch system and the multi-point positioning method are adopted to quickly eliminate ghost points and realize the multi-point positioning.

Description

technical field [0001] The invention relates to the technical field of photoelectric detection, in particular to a touch system and a multi-point positioning method. Background technique [0002] As the latest computer input device, the touch screen is no longer a dispensable thing for computers in various application fields, but an indispensable device. It greatly simplifies the use of computers, even people who know nothing about computers can still use them at their fingertips, making computers more attractive. It solves problems that cannot be solved by computers in the public information market. [0003] For a long time, the touch screen market has been in a colorful situation, and touch screens using different technologies are suitable for different application environments. But now most touch screens can only solve single-point positioning on the touch screen, and it is difficult to achieve multi-point positioning. . Contents of the invention [0004] The object...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/043G06F3/042
Inventor 叶新林刘建军刘新斌唐海波
Owner BEIJING UNITOP NEW TECH CO LTD
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