E-mail: sales@carav.cn

Home > Exhibition > Content
Control device for determining 4-wire or 5-wire resistive touch screen

Control device for determining 4-wire or 5-wire resistive touch screen


TM1901A.jpg

The present invention provides a control device for determining 4-wire or 5-wire resistive touch screen, comprising: detecting means for respectively sending 4-wire control instruction and 5-wire control instruction in the period before sending control instructions of fetching X-axis and Y-axis coordinate position, so as to detect whether a 4-wire resistive touch screen or 5-wire resistive touch screen are being attached; control means, in accordance with the detected result of the detecting means, the control device is switched to 4-wire or 5-wire resistive touch screen so as to fetch the coordinate position.

 

A control device for determining 4-wire or 5-wire resistive touch screen, comprising:detecting means for respectively sending 4-wire control instruction and 5-wire control instruction in the period before sending control instructions of fetching X-axis and Y-axis coordinate position, so as to detect whether a 4-wire resistive touch screen or 5-wire resistive touch screen are being attached;control means, in accordance with the detected result of the detecting means, the control device is switched to 4-wire or 5-wire resistive touch screen so as to fetch the coordinate position. 

A touch screen is widely used in digital device systems such as a pos system, that require selecting the desired items or inputting words by means of screen. The working theory is as follows. The analog signal generated from voltage drop is transformed to digital signal. The digital signal is thus received to determine the coordinate position that a user touches the screen. The touch screens are mainly classified as a resistive touch screen, a capacitor touch screen, an optical touch screen, and an acoustic wave touch screen, where in the resistive touch screen is the most popular one among them based on the reason of its stability.