Method for adjusting scanning frequency of touch screen and electronic terminal

A scanning frequency and electronic terminal technology, which is applied to the adjustment method of the scanning frequency of the touch screen and the field of electronic terminals, and can solve the problems of abnormal capacitive touch screen and inability to use normally.

Inactive Publication Date: 2014-03-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a method for adjusting the scanning frequency of a touch screen and an electronic terminal to solve the problem that when an electronic terminal with a capacitive touch screen is charged with a switching charger, the switching frequency of the switching charger is consistent with the scanning frequency of the capacitive touch screen. The capacitive touch screen is abnormal and cannot be used normally

Method used

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  • Method for adjusting scanning frequency of touch screen and electronic terminal
  • Method for adjusting scanning frequency of touch screen and electronic terminal
  • Method for adjusting scanning frequency of touch screen and electronic terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1Shown is a schematic flowchart of a method for adjusting the scanning frequency of a touch screen according to Embodiment 1 of the present invention. The method is applied to an electronic terminal with a capacitive touch screen. The electronic terminal can be a mobile phone, a tablet computer, etc. The method includes the following steps:

[0056] Step 101, detect whether the electronic terminal is currently being charged by a switch charger, if yes, execute step 102, otherwise, end.

[0057] The switching charger is the working mechanism of the switching transformer and the PWM control chip, and generates a switching frequency during operation.

[0058] Step 102, when the electronic terminal is currently being charged by the switching charger, detect whether there is common-mode interference between the scanning frequency of the touch screen of the electronic terminal and the switching frequency of the switching charger, if yes, perform step 102, other...

Embodiment 2

[0066] Such as figure 2 Shown is a schematic flowchart of a method for adjusting the scanning frequency of a touch screen according to Embodiment 2 of the present invention. The method is applied to an electronic terminal with a capacitive touch screen. The electronic terminal can be a mobile phone, a tablet computer, etc. The method includes the following steps:

[0067] Step 201, detect whether the electronic terminal is currently being charged by a switch charger, if yes, execute step 202, otherwise, end.

[0068] Step 202, displaying preset calibration points.

[0069] The number of preset calibration points is at least one, and it is usually better to set more than one for accuracy. For example, one calibration point can be displayed on the four corners and the center of the display screen, or the display screen can be divided into several squares of equal area, and each square serves as a calibration point; and so on.

[0070] In this embodiment, the display screen an...

Embodiment 3

[0079] Such as image 3 Shown is a schematic flow chart of the method for adjusting the scanning frequency of the touch screen according to Embodiment 3 of the present invention. The method is applied to an electronic terminal with a capacitive touch screen. The electronic terminal can be a mobile phone, a tablet computer, etc. The method includes the following steps:

[0080] Step 301, detect whether the electronic terminal is currently being charged by a switch charger, if yes, execute step 302, otherwise, end.

[0081] Step 302, acquiring the switching frequency of the switching charger.

[0082] Step 303, judge whether the switching frequency of the switching charger is consistent with the current scanning frequency of the touch screen of the electronic terminal, if yes, execute step 304, otherwise, end.

[0083] If the switching frequency of the switching charger is consistent with the current scanning frequency of the touch screen of the electronic terminal, it is deter...

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Abstract

The invention provides a method for adjusting the scanning frequency of a touch screen and an electronic terminal. The method includes the steps that when the electronic terminal is charged through a switching charger currently, whether common-mode interference exists between the current scanning frequency of the touch screen of the electronic terminal and the switching frequency of the switching charger or not is detected; when it is detected that the common-mode interference exists between the current scanning frequency of the touch screen and the switching frequency of the switching charger, a first scanning frequency without common-mode interference with the switching frequency of the switching charger is acquired from a plurality of pre-stored scanning frequencies; the current scanning frequency of the touch screen is adjusted to be the first scanning frequency. The scanning frequency of the touch screen of the electronic terminal can automatically adapt to the switching frequencies of various types of switching chargers, and thus the purpose that the touch screen can be used normally even when the electronic terminal is charged is achieved.

Description

technical field [0001] The invention relates to the technical field of electronic terminals, in particular to a method for adjusting the scanning frequency of a touch screen and an electronic terminal. Background technique [0002] Touch screens used in electronic terminals (such as mobile phones, tablet computers, etc.) are mainly divided into resistive touch screens and capacitive touch screens. Capacitive touch screens occupy the mainstream market due to their advantages such as long life and low power consumption. When the capacitive touch screen is working, it will scan the touch screen at a certain scanning frequency to obtain the user's touch position. The scanning frequency is usually set by the manufacturer when leaving the factory. [0003] Electronic terminals with touch screens usually have the disadvantage of high power consumption, so they need to be charged frequently. At present, most electronic terminals use the charger as a switching charger. The switching...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG06F3/04184G06F3/044
Inventor 宁金星李朝晖王建成彭科仁赵战克刘世伟
Owner ZTE CORP
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