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A touch terminal and its anti-interference method and system

A touch and terminal technology, which is applied in the input/output process of instruments, electrical digital data processing, and data processing. It can solve problems such as misoperation, reduce the response sensitivity and interference of capacitive display screens, and improve the response threshold. value, solving charger interference, and the effect of accurate and effective interference positioning

Inactive Publication Date: 2017-02-08
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the above-mentioned defects of the prior art, the present invention provides a touch terminal and its anti-interference method and system. When the touch terminal is connected to a USB peripheral, the response sensitivity of the capacitive display screen of the touch terminal is reduced, thereby solving the problem of Solved the touch misoperation problem caused by the interference of the capacitive touch screen during the charging process of the touch terminal by the USB peripheral

Method used

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  • A touch terminal and its anti-interference method and system
  • A touch terminal and its anti-interference method and system
  • A touch terminal and its anti-interference method and system

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Embodiment Construction

[0028] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments.

[0029] The working principle of the capacitive touch screen of the touch terminal is: a register inside the controller of the capacitive touch screen stores a response threshold (also called the report threshold), when the finger touches the capacitive touch screen When on the metal layer, due to the electric field of the human body, the finger and the surface of the touch screen form a coupling capacitance. When the capacitance value reaches or exceeds the response threshold value, it will respond to the touch action (that is, report the point), that is, perform the corresponding touch. control operation.

[0030] figure 1 It is a flow chart of the first embodiment of the anti-interference method for the capacitive touch screen of the touch terminal of the present invention, as figure 1 Shown, in this implementation, method of the present invention c...

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Abstract

The invention discloses a touch control terminal and an anti-interference method and system thereof. The touch control terminal comprises the anti-interference system, wherein the anti-interference system comprises a capacitance value acquisition module and a first adjusting module. The method comprises the following steps: S1, if the touch control terminal is connected to a USB (Universal Serial Bus) peripheral device, adjusting the response threshold value of a capacitive touch screen of the touch control terminal to lower the response sensitivity of the capacitive touch screen; and S2, if the touch control terminal is separated from the USB peripheral device, adjusting the response threshold value into a default value to recover the response sensitivity of the capacitive touch screen. According to the method and the system, after the insertion of the touch control terminal into the USB peripheral device is detected, the response threshold value of the capacitive touch screen is increased, the sensitivity of the capacitive touch screen is lowered, and the problem of interference is solved.

Description

technical field [0001] The present invention relates to touch sensing technology, and more specifically, to a touch terminal and an anti-interference method and system thereof. Background technique [0002] When an existing touch terminal including a capacitive touch screen is connected to a USB device, the USB device will charge the touch terminal. The switching frequency of the device charged by the control terminal is relatively close to the scanning frequency of the capacitive touch screen. During the charging process, the interference to the capacitive touch screen is relatively large, which will lead to the problem of touch misoperation. The traditional method to solve the interference problem is to change the scanning frequency of the capacitive touch screen to skip the interference frequency. However, there are many types of USB devices on the market. For example, there are many brands of chargers, and the switching frequency of each brand’s chargers is different. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
Inventor 靳勇张冀
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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