Static eliminating method for touch screen

A static elimination and touch screen technology, applied in the direction of electrical digital data processing, data processing input/output process, instruments, etc., can solve the problems of non-response to finger touch, no function of touch screen, chaotic I2C communication timing of touch screen, etc., to avoid Effects of use disorders

Active Publication Date: 2015-05-06
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In the abnormal environment of electrostatic shock, where the anti-static shock ability of the touch screen hardware design is weak, some problems are more likely to occur, such as unlimited reporting of touch information to the application layer, as if there is always a Press the finger on this area, resulting in no response to normal finger touch. This is the phenomenon that the touch screen has no function. Another is that due to static electricity, the I2C communication timing of the touch screen has been confused, and I2C communication failure will also cause the touch screen to fail. no function

Method used

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  • Static eliminating method for touch screen

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Embodiment Construction

[0029] At first, explain the present invention idea and key steps:

[0030] (1) Detect whether the light sensor value changes from a value close to zero to a relatively large value, that is, detect whether the touch screen is away from the surface of an object.

[0031] (2) Make statistics on the number of I2C communication failures of the touch screen, and judge whether the number of failures is lower than the communication failure setting value. If it is higher than the communication failure setting value, it means that the touch screen I2C communication has failed many times, then power off and then power on again reset.

[0032] (3) Within the set time, detect whether the number of touch events in certain areas exceeds the false alarm setting value. If it exceeds the false alarm setting value, it means that infinite touch events have occurred in this area of ​​the touch screen, then the touch screen Perform a software reset of the registers.

[0033] Second, describe in ...

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PUM

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Abstract

The invention relates to a static eliminating method for a touch screen, which utilizes an optical sensor, and includes the steps: utilizing the optical sensor to detect leaving of objects on the touch screen, and making statistics on failure times of communication between the touch screen and a control chip; performing reset operation by repowering the touch screen after powering off of the touch screen when the failure times exceed a communication failure set value; or when the failure times are lower than a communication failure set value, and touch event times in the same area of the touch screen exceed a misinformation set value, performing register software reset operation / reset operation of repowering on after powering off for the touch screen (performing register software reset operation for the touch screen in a preferred embodiment). By the aid of the static eliminating method, when the touch screen is affected by static, the touch screen can be quickly and effectively reset so that normal use is resumed.

Description

technical field [0001] The invention relates to a touch screen, in particular to a static elimination method for a touch screen. Background technique [0002] As the capacitive touch screen itself adapts to environmental changes, the reference value of the touch screen will change accordingly to adapt to the current touch environment. In the abnormal environment of electrostatic shock, where the anti-static shock ability of the touch screen hardware design is weak, some problems are more likely to occur, such as unlimited reporting of touch information to the application layer, as if there is always a Press the finger on this area, resulting in no response to normal finger touch. This is the phenomenon that the touch screen has no function. Another is that due to static electricity, the I2C communication timing of the touch screen has been confused, and I2C communication failure will also cause the touch screen to fail. No function. Contents of the invention [0003] The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044G06F11/00
Inventor 曾元清
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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