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A touch contact positioning method, system and video display terminal

A positioning method and positioning system technology, applied in the direction of instruments, calculations, electrical digital data processing, etc., can solve the problem of "ghost point complexity" and achieve the effect of accurate positioning and low time complexity

Active Publication Date: 2011-04-20
深圳市合力泰光电有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] The purpose of the embodiments of the present invention is to provide a capacitive screen algorithm with high efficiency, aiming to solve the problem of "ghost point" phenomenon and high complexity when locating multiple touch points in the prior art

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  • A touch contact positioning method, system and video display terminal
  • A touch contact positioning method, system and video display terminal
  • A touch contact positioning method, system and video display terminal

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Embodiment Construction

[0025] 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 and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] In the embodiment of the present invention, by performing self-capacitance detection on the sensor in the capacitive touch screen, the coarse positioning result is obtained, the mutual capacitance detection is performed according to the coarse positioning result, the fine positioning result is obtained, and the position of the touch point is determined according to the fine positioning result to realize Accurate and fast positioning of multiple touch points.

[0027] image 3 It is a flow chart of touch point positioning processing provided by the embodiment of the present invention.

[00...

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Abstract

The present invention is applicable to the field of touch screens, providing a touch contact positioning method, system and video display terminal. The method includes the following steps of: acquiring the coarse positioning results by conducting a self-capacitance detection to an inductor in a capacitive touch screen, acquiring the accurate positioning results by conducting a mutual capacitance detection according to the coarse positioning results, and then determining the position of the touch contact according to the accurate positioning results. The embodiment of the present invention, byacquiring the coarse positioning results by conducting a self-capacitance detection to the inductor in the capacitive touch screen, acquiring the accurate positioning results by conducting a mutual capacitance detection according to the coarse positioning results, and determining the position of the touch contact according to the accurate positioning results, realizes the precise positioning of aplurality of touch contacts and solves the problem of 'ghost points' effectively with less time and complexity.

Description

technical field [0001] The invention belongs to the field of touch screens, and in particular relates to a touch point positioning method, system and display terminal. Background technique [0002] Projected capacitive touch screens have become more and more popular due to their high light transmittance, simple assembly, long life, and stable performance in harsh environments. In addition, it is worth mentioning that the projected capacitive screen is capable of multi-touch. Multi-touch can bring users a brand-new touch experience. For example, users can freely play music with ten fingers on a realistic piano touch interface, and even enjoy the fun of games in which multiple users simultaneously perform large-screen touch operations. [0003] A typical example of a projected capacitive screen is US2008 / 0007534A1, its structure is as follows figure 1 as shown, figure 1 The structure shown has 8 rows and 8 columns with a total of 128 touch sensing points (sensor pads), main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 陈杰
Owner 深圳市合力泰光电有限公司
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