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Foreign matter detection method of touch screen and touch screen

A foreign object detection and touch screen technology, applied in the field of foreign object detection, can solve problems such as affecting the user experience and difficult to distinguish foreign objects on the touch screen, and achieve the effect of avoiding affecting the user experience.

Active Publication Date: 2016-05-04
HUAQIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defect that some foreign matter on the touch screen is difficult to distinguish in the prior art and affect the user experience, and to provide a foreign matter detection method of the touch screen and a touch screen

Method used

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  • Foreign matter detection method of touch screen and touch screen
  • Foreign matter detection method of touch screen and touch screen
  • Foreign matter detection method of touch screen and touch screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment provides a method for detecting foreign objects on a touch screen, such as figure 1 shown, including the following steps:

[0034] Step 100: Detect the current flowing from the electrodes of the touch screen, and convert the current into coordinate values ​​on the touch screen. The number of coordinate values ​​will vary depending on the size of the foreign matter and the distribution of the foreign matter on the touch screen;

[0035] Step 101, judge whether the coordinate value is within the effective range of the touch screen, and use the coordinate value within the effective range of the touch screen as the effective coordinate value;

[0036] Step 102, detecting the pressure at the effective coordinate value of the touch screen;

[0037] Step 103, judging whether the pressure measured in step 102 is less than a preset threshold value, and taking the effective coordinate value whose pressure is lower than the threshold value as the foreign object co...

Embodiment 2

[0041] This embodiment provides a method for detecting foreign objects on a touch screen, such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that step 103 and step 104 include:

[0042] Step 1031, dividing all foreign object coordinate values ​​into at least one coordinate value group, wherein the foreign object coordinate values ​​in the same coordinate value group are adjacent, and the foreign object coordinate values ​​in different coordinate value groups are not adjacent;

[0043] Step 104 is: outputting a second image, in which a second mark is drawn at the position corresponding to each coordinate value group.

[0044] For example, when a contact with static charge remains on the surface of the touch screen, the electrodes of the touch screen will have a corresponding current flow out. For contacts of different shapes and sizes, according to the principle of the capacitive touch screen, the current is calculated. Multiple coordinate v...

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PUM

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Abstract

The invention discloses a foreign matter detection method for a touch screen and the touch screen. The foreign matter detection method for the touch screen comprises the steps as follows: currents flowing out of an electrode of the touch screen are detected and converted into coordinate values on the touch screen; whether the coordinate values are within an effective range of the touch screen or not is judged, and the coordinate values within the effective range of the touch screen are used as effective coordinate values; pressures in positions of the effective coordinate values of the touch screen are detected; whether the pressures measured in the last step are smaller than a preset threshold value or not is judged, and the effective coordinate values with the pressures smaller than the threshold value are used as foreign matter coordinate values; and warning signals are output and used for indicating that foreign matters exist in positions of the foreign matter coordinate values. According to the foreign matter detection method for the touch screen and the touch screen, whether the foreign matters exist on the touch screen can be detected, when the foreign matters exist, positions of the foreign matters can be detected, and a user can be informed, so that timely cleaning can be performed.

Description

technical field [0001] The invention relates to a foreign matter detection method, in particular to a foreign matter detection method of a touch screen and the touch screen. Background technique [0002] When people use electronic equipment with a touch screen, it is easy to leave foreign matter with static charge on the touch screen, such as grease, etc. After a long period of accumulation, the foreign matter will affect the touch screen to receive input signals from contacts, etc. failure, thereby affecting the user experience. However, some foreign matter is difficult to identify with the naked eye, so it needs to be detected and cleaned. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defect in the prior art that some foreign matter on the touch screen is difficult to distinguish and affect the user experience, and provide a foreign matter detection method of the touch screen and a touch screen. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
Inventor 付萌陈磊钱捷
Owner HUAQIN TECH CO LTD