Patent ID: 8334849
Filing Date: 2012-12-18
Classification: G06F

Abstract:
1. A method of reporting touch points in a mutual capacitance sensing device, comprising: (a) tracking individual touch points of a user on a touch panel or touchpad of the sensing device; (b) reporting a plurality of individual touch points to registers of a processor; (c) determining, in the processor, whether a particular touch point from among the reported plurality of individual touch points is a new touch point or an existing touch point; (d) if the touch point is determined to be a new touch point, determining in the processor whether a touch force value associated with the new touch point is greater than a first threshold and then identifying the new touch point in the processor as a touch, and if the touch force value is less than the first threshold then identifying the touch point in the processor as a hover; (e) if the touch point was previously detected as a hover, determining in the processor whether the touch force value associated with the touch point is greater than the first threshold and then identifying the touch point in the processor as a touch, and if the touch force value is less than the first threshold then identifying the touch point in the processor as a hover; (f) if the touch point was previously detected as a touch, determining in the processor whether the touch force value associated with the touch point is greater than a second threshold and then identifying the touch point in the processor as a touch, and if the touch force value is less than the second threshold then identifying the touch point in the processor as a hover; and (g) repeating steps (a) through (f) in the registers and processor until all the reported individual touch points have been identified as touches or hovers.