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Identification method and device of touch points

A recognition method and a technology of a recognition device, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve problems such as increased calculations, complex calculation systems, and obstacles to the accuracy of touch point recognition, so as to avoid Effects of incorrect positioning, improved response speed, and reduced processing volume

Active Publication Date: 2012-03-07
南通卓效自动化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two major defects in the prior art. One is that as the scanning direction increases, the calculations brought also increase, which makes the calculation system complicated and hinders the response speed of the touch screen; Improper selection of direction will hinder the accuracy of multipl

Method used

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  • Identification method and device of touch points
  • Identification method and device of touch points
  • Identification method and device of touch points

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Experimental program
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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] figure 1 It is a flow chart of the identification method of the touch point of the present invention, including:

[0024] S101: Detect the number of touch points in several preset directions;

[0025] S102: Select the two directions with the largest number of detected touch points as the positioning directions, and according to the ray beams blocked by the touch area in the positioning directions, determine the ray in the middle of the ray beams as the occlusion center line;

[0026] S103: Obtain the intersection points of each occlusion center line, and calculate the number and / or coordinates of touch points according to each intersection point.

[0027] In the prior art, on the basis of scanning in the horizontal and vertical directions, one or several ...

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PUM

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Abstract

The invention discloses an identification method and device of touch points. The method comprises the following steps of: detecting the quantity of the touch points in a plurality of pre-set directions; selecting two directions with the maximum quantity of the detected touch points as positioning directions; according to ray bundles which are shielded by touch regions in the positioning directions, determining a ray in the middle of the ray bundles as a shielding midline; and obtaining intersection points of the shielding midlines and calculating the quantity and/or a coordinate of the touch points according to each intersection point. With the adoption of the identification method of the touch points, the two directions with the maximum quantity of the detected touch points are selected as the positioning directions, therefore, the scanning accuracy is effectively improved and the condition of inaccurate positioning caused by different sizes of touch objects is avoided. Furthermore, the process amount of data is decreased and the response speed of the touch screen is improved.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to a method and device for identifying touch points. Background technique [0002] Screen touch technology is closely related to people's work and life. For example, most ATMs in banks have touch screen functions. Many government affairs halls and libraries have operation terminals with this touch function. There are also many touch screen mobile phones, MP4, LCD digital camera etc. The function development of the touch screen is from simple to complex. From the initial product that only supports single touch, to now it can realize multi-touch control, and its technology has made a qualitative leap. The so-called single-point touch means that a finger touches a point on the screen to achieve manipulation. For example, what we do every day at the POS terminal of a nearby supermarket, or at the check-in terminal at the airport. As amazing and revolutionary as single-touch and...

Claims

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Application Information

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IPC IPC(8): G06F3/041
Inventor 徐响林钟杰婷
Owner 南通卓效自动化有限公司