Patent ID: 8378973

Claim:
A method for scroll bar control on a touchpad, comprising the steps of: detecting if a number of fingers touching on the touchpad is equal to or larger than a first threshold, for starting up a scroll bar control function; selectively redefining the touchpad in operational configuration between alternative cursor control and scroll bar control functions responsive to the detection independent of a sliding movement of said number of fingers; in the scroll bar control function, detecting the sliding movement of said number of fingers on the touchpad for scrolling on a window in accordance with the finger movement, selectively setting a scroll direction based on comparative vertical and horizontal distances of the finger movement; and continuing said scroll bar control function to scroll in further distance-based response to at least one finger remaining continuously on said touchpad when said number of fingers remaining continuously on said touchpad is greater than a second threshold; wherein said first threshold is larger than one and said second threshold.