Patent ID: 8487912

Claim:
A system comprising: a radial slider coupled to capacitive touch sense circuitry that is configured to output an indication of a position of an input object relative to a surface of the radial slider; and control circuitry comprising a first position register, a second position register and a scrolling hysteresis module, the scrolling hysteresis module to: receive a first signal from the capacitive touch sense circuitry, the first signal indicating a previous radial position of the input object on the surface of the radial slider; mask the previous radial position from an output of the control circuitry; store the previous radial position in the first position register; receive a second signal from the capacitive touch sense circuitry, the second signal indicating a current radial position of the input object on the surface of the radial slider; store the current radial position in the second position register; determine a difference between the current radial position stored in the second position register and the previous radial position stored in the first position register; compare the determined difference to a hysteresis value, wherein the hysteresis value is a threshold representing a specified amount of angle for outputting or masking the current radial position; mask the current radial position from the output of the control circuitry when the determined difference is less than the hysteresis value; and output the current radial position from the output of the control circuitry when the determined difference is not less than the hysteresis value.