Method for automatically identifying and correcting touch screen

Abstract

The invention relates to a method for automatically identifying and correcting a touch screen. The method comprises the following step of comparing a difference between energy state graph spectrums formed by a front moment and a back moment on the touch screen with a preset threshold value to judge whether the preset threshold value is an interference value. Because the touch screen is automatically corrected by utilizing variation of the energy graph spectrums sensed by each scanning line, the method is simple and the automatic correction is not influenced even if initial environment of electrifying the touch screen changes.

Description

technical field [0001] The invention relates to a method for calibrating a touch screen, in particular to a method for automatically identifying and calibrating a touch screen. Background technique [0002] With the rapid development of science and technology, earth-shaking changes have taken place in electronic products. With the advent of touch-sensitive electronic products recently, more and more touch-control products have been sought after by people. Not only can they save space, they are convenient Portable, and the user can directly operate it with a finger or a stylus, which is comfortable and convenient to use. For example, personal digital processing (PDA), touch mobile phones, portable notebook computers, etc., which are common in the market today, have all increased investment in touch technology, so touch devices will be more widely used in various fields in the future. Applications. [0003] At present, the capacitive touch panel has been sought after by the ...

AI Technical Summary

Problems solved by technology

[0003] At present, the capacitive touch panel has been sought after by the market recently due to its wear resistance, long life, and advantages in light loss and system efficiency, and various capacitive touch screen products have come out. The working principle of the touch panel is generally to sense the capacitance change of the panel through the touch chip to judge the position and movement of the finger. , such as temperature, humidity, electromagnetic effects, etc., the sensing quantity detected by the touch screen will also be in a process of constant change, and if the influence of external interference is too large, the specific position touched by the finger cannot be accurately detected.

[0004] In order to overcome the above shortcomings, although the industry has also proposed some targeted solutions, such as setting the threshold value of the sensing value to eliminate the influence caused by external interference, it is considered that only the sensing value greater than the threshold value is considered effective. Touch operation, but this method still cannot accurately eliminate external interference

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