| 摘要 |
An embodiment of the invention provides a method and apparatus for determining what type of interaction is made with a capacitive touch screen. A capacitance sensor with the largest sensed capacitance in a group of capacitance sensors is determined. Next, a parametric surface is determined from the value of the largest sensed capacitance and the values of the sensed capacitances in the group of capacitance sensors. From the parametric surface, an interpolated peak capacitance, a curvature K at the interpolated peak and an orientation theta at the interpolated peak are determined. Based on the interpolated peak capacitance, the curvature K and the orientation theta, the type of interaction made with the capacitive-touch screen is identified. |
