US Patent 7903003 Electronic module with track identification function and keypad identification function

An electronic module with a track identification function and a keypad identification function is provided. The electronic module includes a touch-control element and a driver. The driver has a track identification mode and a keypad identification mode. When the driver receives a switch signal, the driver mode is switched between the track identification mode and the keypad identification mode. In the keypad identification mode, the touch-control element has at least a key position. When a user presses the key position, the driver provides a key command. In the track identification mode, the driver provides a cursor position signal.