PARAMETER ADJUSTMENT USING VEHICLE TOUCH SCREEN

Methods and systems are provided for adjusting parameters using a vehicle touch screen. In one embodiment, a method includes determining an initial touch position of an external touch operation when the external touch operation is detected. A movement trajectory and final disengagement position of the external touch operation may then be detected. The movement trajectory need not be limited to an area covered by a parameter adjustment control. The parameter adjustment control may then be adjusted to a final parameter value according to the initial touch position, the final disengagement position, and the movement trajectory.