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Touch sensitive system, apparatus and method for measuring signals of touch sensitive screen

A signal measurement and touch screen technology, applied in the field of touch screen, to achieve the effect of detection and noise reduction

Inactive Publication Date: 2017-03-15
EGALAX EMPIA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to propose a signal measuring device and method for a touch control system and a touch screen. The technical problem to be solved is to reduce noise and facilitate detection, thereby being more suitable for practical use.

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  • Touch sensitive system, apparatus and method for measuring signals of touch sensitive screen
  • Touch sensitive system, apparatus and method for measuring signals of touch sensitive screen
  • Touch sensitive system, apparatus and method for measuring signals of touch sensitive screen

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Embodiment Construction

[0076] The present invention will be described in detail in some embodiments as follows. However, the invention can be broadly implemented in other embodiments besides the disclosed ones. The scope of the present invention is not limited by the embodiments, but is subject to the scope of protection claimed by the patent. In order to provide a clearer description and enable those skilled in the art to understand the content of the invention, the various parts in the illustrations are not drawn according to their relative sizes, and the ratio of certain sizes to other related dimensions will be highlighted and It appears exaggerated, and irrelevant details are not fully drawn in order to simplify the illustration.

[0077] Capacitive touchscreens are susceptible to noise, especially from human bodies touching the touchscreen. The present invention adopts an adaptive driving and / or detecting method to achieve the purpose of reducing noise interference.

[0078] In a capacitive...

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Abstract

The present invention provides an apparatus for measuring signals of touch sensitive screen, which comprises multiple conductive strips including multiple parallel driving strips and multiple parallel sensing strips. Multiple intersecting areas are located at the intersections of these multiple driving and sensing strips. The apparatus comprises a driving circuit and a sensing circuit. The driving circuit sequentially provides a first driving signal and a second driving signal to a first set of the driving strips and a second set of the driving strips, respectively. The sensing circuit sequentially senses a first signal and a second signal of at least one sensing strips corresponding to the first driving signal and the second driving signal, respectively. The time duration of the first driving signal is different from the time duration of the second driving signal.

Description

technical field [0001] The present invention relates to touch screens, in particular to the technology of controlling parameters of front-end modules to level touch screens. Background technique [0002] Touch panels or touch screens are already one of the main input and output devices of modern electronic devices. In this application, the word touch screen is used uniformly to refer to a touch panel that does not display or a touch screen that does display. The capacitive touch screen uses capacitive coupling with the human body to cause a change in the detection signal, thereby judging the position touched by the human body on the capacitive touch screen. When the human body touches, the noise of the environment where the human body is located will also be injected with the capacitive coupling between the human body and the capacitive touch screen, which will also change the detection signal. And because the noise is constantly changing, it is not easy to predict. When th...

Claims

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Application Information

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IPC IPC(8): G06F3/044
CPCG06F3/044G06F2203/04111
Inventor 张钦富叶尚泰
Owner EGALAX EMPIA TECH INC
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