| 摘要 |
A control circuit is applied for a four-wire resistive touch panel including an upper conducting layer having a first signal terminal and a second signal terminal, and a lower conducting layer having a third signal terminal and a fourth signal terminal. The control circuit includes a control unit, a switching unit and a converter. By the switching unit, the first, second, third and fourth signal terminals are switched to connect with an input voltage terminal, a ground terminal and the converter according to a control signal of the control unit. When users press the touch panel, there is a touching point between the upper conducting layer and the lower conducting layer, and the input voltage terminal transmits to the converter through the touching point so plural coordinate values are generated. The gestures such as scrolling, zooming and rotating are distinguished by the touch panel according to the coordinate values. |
