Method for detecting multipoint touch control on touch control screen

A multi-touch and touch screen technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve the problem of inaccurate judgment of the actual position of the finger, achieve high practicability, remove virtual The effect of simple position and method

Active Publication Date: 2010-06-30
SUZHOU PIXCIR MICROELECTRONICS
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  • Abstract
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Problems solved by technology

[0009] The method for detecting the position of the actual touch point during multi-finger operation on the touch screen of the present invention overcomes the traditional problem that the actual position of the finger cannot be accurately judged. Different solutions are proposed, so the practicability is high, and the method is simple and easy, and can effectively remove the influence of the virtual position point, and accurately and quickly determine the actual position point after multi-finger touch

Method used

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  • Method for detecting multipoint touch control on touch control screen
  • Method for detecting multipoint touch control on touch control screen
  • Method for detecting multipoint touch control on touch control screen

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] first for figure 1 In the case where the distance between the intersection points is relatively long, briefly describe how to detect the position of multiple touch points. Take two fingers touching the touch screen as an example. After the fingers touch the touch screen, the There will be a positive induction peak value on the four scanning lines on the touch screen, then there will be 4 intersection points at the intersection of these four scanning lines, which are: A, B, C and D, and their coordinate values ​​are respectively It is (X1, Y1), (X2, Y2), (X1, Y2) and (X2, Y1). Then start to detect the size of the induction peak corresponding to each intersection point at this time. Since two sets of positive induction peaks are detected in the X and Y directions of the coordinate axis at this time, it is only necessary to detect the corresponding...

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Abstract

The invention relates to a method for detecting a practical touch control point position on a touch control screen during multi-finger operation. In the method, the accurate positions of all touch control objects on the touch control screen are detected by utilizing a generated inducing peak value. The method constructively provides different solutions under the condition of generated different virtual position points, therefore, the practicability is higher; and the method is simple and easy and can effectively eliminate the influence of the virtual position points and accurately and rapidly judge the practical position point after multi-finger touch.

Description

technical field [0001] The invention relates to a method for detecting multi-point touch when the multi-finger operation function is realized on the touch screen. 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 market recently ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 刘代强樊永召
Owner SUZHOU PIXCIR MICROELECTRONICS
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