Signal processing method for resistor type touch control plate

Abstract

The invention provides a signal processing method for a resistance-typed touch control plate, which is characterized in that whether error signals exist or not is found out by comparing the signal change rate of an article on the touch control plate with a general standard rate; if the error signal is generated, the error signal is removed and whether intermission exists or not is further judged; if the intermission exists, whether the intermission is a normal signal intermission caused by no-action of the user or a non-normal signal intermission caused by false actions resulted from physical factors under the situation that the user has actions; if the intermission is the non-normal signal intermission, the signal is re-processed; when the moving of the article on the touch control plate tends to be static or shaking, effective or ineffective moving is judged by the method of signal integer output and remainder accumulation, so as to lead the signal output which has moving tendency to be more precise.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 200410001637.9 filed on January 7, 2004, entitled "Signal Processing Method for Resistive Touch Panel". 【Technical field】 [0002] The invention relates to a signal processing method, in particular to a signal processing method applied to information products and used as a resistive touch panel for signal input. 【Background technique】 [0003] Touch pads (Touch pad) can be divided into resistive type and capacitive type according to the physical principle of touch point detection. They are often used in consumer electronic products such as notebook computers and personal digital assistants. The way to use it is to use a stylus or move your finger on the touchpad to perform handwriting or simulate a mouse click function, so it is divided into a writing mode and a mouse mode. The handwriting mode is based on absolute coordinates, that is, the position of the stylus or finger on the touchpad h...

AI Technical Summary

Problems solved by technology

[0006] Generally speaking, the sources of errors that affect the coordinates of the X and Y axes are mainly classified into electrical noise signals and mechanical errors. It will affect the subsequent interpretation, and the mechanical error is caused by poor calibration

In addition, there are also problems such as that the output of the analog-to-digital converter 95 is not the user's intention due to the misoperation of the user's touch, such as insufficient time or too small a touch force.

[0007] For the user’s false action of pressing, as far as the finger input method is concerned, the false action can be divided into uneven force application and finger shaking. The effect of uneven force application will make the touch signal Vt It appears intermittent. As for the effect of finger shaking, when clicking on a small area, the controller 96 cannot correctly interpret the clicked position and misjudgment occurs. Based on the above two situations In other words, it is not conducive to the accuracy of the touch panel 9 when it is judged, and it will cause invalid or wrong touch selection when using it. and click on the wrong area, etc.

Images