A method for automatic error correction and correction of resistive touch screen

Abstract

The invention discloses an automatic error correction method for a resistive touch screen. The automatic error correction method for the resistive touch screen comprises the steps of reading parameter data of the product model, judging whether a reference file corresponding to the product model exists or not; if the reference file does not exist, automatically generating the reference file which provides reference for follow-up correction; if the reference file exists, obtaining an upper left coordinate clicked by a user, and calculating a difference between the upper left coordinate and an upper left coordinate in the reference file; judging whether the absolute value of the difference exceeds a preset range or not, if not, accomplishing correction of the upper left coordinate, and accomplishing correction of an upper right coordinate, a lower right coordinate, a lower left coordinate and a central point coordinate in sequence in the same mode. According to the automatic error correction method for the resistive touch screen, correction misoperation can be avoided, the phenomenon that suspended halt of the resistive touch screen is caused due to misoperation of a user can be effectively avoided, and efficiency of the correction program is improved; meanwhile, after the user clicks the resistive touch screen, sampling interval delay is triggered, and misoperation such as continuous clicks can be effectively prevented.

Description

technical field [0001] The invention relates to a touch screen correction method, in particular to an automatic error correction correction method for a resistive touch screen. Background technique [0002] In a mobile terminal using a touch screen, debugging of the performance of the touch screen is one of the important issues. Due to electromagnetic noise, the touch screen is prone to problems such as inaccurate clicks and jitters. Tslib is an open source program that can provide functions such as filtering, debounce, and calibration for the sampling data obtained by the touch screen driver. It is usually used as the adaptation layer of the touch screen driver and provides a unified interface for upper-layer applications. [0003] In the prior art, for resistive screens, direct sampling needs to be performed through the original calibration program, and the directly sampled data is used as the calibration standard. The problem with this method is that when the user clicks ...

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Problems solved by technology

[0003] In the prior art, for resistive screens, direct sampling needs to be performed through the original calibration program, and the directly sampled data is used as the calibration standard. The problem with this method is that when the user clicks the wrong place or the click sampling interval is too small After misoperations such as double-clicking, the system directly uses the sampled coordinates as the calibration standard, resulting in a large deviation between the coordinate system of the LCD display and the touch-sensitive screen. After the user enters the application, the screen appears in a state of suspended animation. The one-time calibration used during initialization, after the user misuses, the finished machine cannot be re-calibrated, and the calibration procedure must be opened for software debugging before the user can re-execute it, causing inconvenience to the user

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