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Method for detecting multi-point touch and touch screen

A multi-touch, touch screen technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc. Problems such as the actual position of the object, to achieve the effect of simple structure, high practicability, and removal of the influence of virtual position points

Inactive Publication Date: 2010-08-11
SUZHOU PIXCIR MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to the existence of ghost points, the actual position of the touch object cannot be accurately judged on the touch screen
[0004] From the above discussion, it can be known that the generation of ghost points will make the touch screen unable to correctly detect the actual position of each finger touch point after multi-finger touch, so how to effectively remove the interference of ghost points has been researched by the industry. focus

Method used

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  • Method for detecting multi-point touch and touch screen
  • Method for detecting multi-point touch and touch screen
  • Method for detecting multi-point touch and touch screen

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] In order to obtain the real multi-point coordinates more accurately, the Z-axis is introduced on the basis of the X-axis and Y-axis, so that the two-dimensional space is transformed into a three-dimensional space, so that it is relatively easy to eliminate the existence of ghost points and find out the actual touch point.

[0018] Let's take two-point touch as an example. When there is a touch object such as a finger touching the touch, the place where the finger touches will generate a corresponding sensor. If the initial value of the original signal in each space is set to zero, then the sensing value on the coordinate axis of the place touched by the finger will change, and the position information of the corresponding coordinates at this time will be recorded, so as to infer the position of the touch point. actual location. Taking the three...

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Abstract

The invention relates to a method for detecting multi-point touch, which is characterized in that an axle Z is added on the basis of utilizing axle X and axle Y to detect the position coordinate of multi-point touch so as to detect the coordinate position of the multi-point touch in the three-dimensional space. The method overcomes the problem that the real position of the finger cannot be correctly judged, and utilizes the method for detecting the real position of the touch point in the three-dimensional space, not only is simple and feasible, but also ensures the simple structure of the corresponding touch control panel; therefore, the practicability is very high, the influence of the virtual position points can be effectively eliminated, and the real position point after being touched by multiple fingers can be correctly and rapidly judged.

Description

technical field [0001] The invention relates to a method for detecting multi-point touches and a corresponding touch screen when realizing a multi-finger operation function. Background technique [0002] With the rapid development of science and technology, earth-shaking changes have taken place in electronic products. With the advent of touch-sensitive electronic products recently, more and more touch-control products have been sought after by people. Not only can they save space, they are convenient Portable, and the user can directly operate it with a finger or a stylus, which is comfortable and convenient to use. For example, personal digital processing (PDA), touch mobile phones, portable notebook computers, etc., which are common in the market today, have all increased investment in touch technology, so touch devices will be more widely used in various fields in the future. Applications. [0003] At present, capacitive touch panels have been sought after by the marke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
Inventor 刘杰杜小雷
Owner SUZHOU PIXCIR MICROELECTRONICS
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