| 摘要 |
An electronic device includes a sensor for determining the position of an input member, such as a user's finger or stylus, for example, relative to a user interface of the device. Before the input member contacts the user interface, the sensor detects the horizontal and vertical positions of the input member and generates positional signals indicative of those positions. A controller at the device determines the horizontal and vertical positions of the input member based on the positional signals, and generates first and second feedback signals as a function of the detected horizontal and vertical positions to indicate the input member position relative to the user interface. |
