Handwriting Correction Method and System for Touch Screen

Abstract

The present invention relates to a handwriting correcting method and system of a touch screen. The method comprises the following steps: acquiring a first coordinate point of handwriting at a first moment, acquiring a second coordinate point of the handwriting at a second moment, and acquiring a third coordinate point of the handwriting at a third moment; by taking an extended line of the first coordinate point and the second coordinate point as an axis, extending one included angle from each of two sides of the axis, so that the two included angles form an effective included angle range; and according to the effective included angle range, correcting the third coordinate point of the handwriting. According to the handwriting correcting method and system of the touch screen provided by the present invention, a direction included angle range is calculated by use of the first two handwriting points, so that a tracking direction variable of a handwriting track can be determined; according to the tracking direction variable, a track range of the next handwriting point can be predicted, and new coordinates of the handwriting can be corrected; and by adopting the method, influences of shaking can be reduced, a phenomenon that the handwriting are burr-like can be eliminated, and a better handwriting effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to a handwriting correction method and system for a touch screen. Background technique [0002] The touch screen is an indispensable part of the human-computer interaction system. It acts as a dialogue window between the machine and the user. The user's operation can be transmitted to the MCU through the touch screen to perform various controls. To accurately convey coordinates, pressing, lifting, and sliding information, the user's touch gestures need to be processed accordingly. [0003] Because the car touch screen is in a jittering environment, when the touch screen slides, it presents a continuous beating state, which will cause great interference to handwriting. Generally speaking, the jitter of sliding handwriting will cause more burrs in the formed font or pattern. [0004] At present, the screen driver algorithms of vehicle touch screens are more commonly used are t...

AI Technical Summary

Problems solved by technology

[0006] Based on this, it is necessary to provide a handwriting correction method and system for a touch screen for the problem that there are defects in the de-jittering property and the handwriting is greatly affected by the jitter.

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