Patent ID: 9075465
Filing Date: 2015-07-07
Classification: G06F

Abstract:
1. A method of identifying a touch event on a touch panel, the touch panel comprising a plurality of sensing blocks, the sensing blocks having a plurality of corresponding sensing values generated in response to the touch event, the method comprising: selecting a processing region on the touch panel, wherein the processing region comprises at least a portion of sensing blocks each having a sensing value greater than a threshold; deriving a first value and a second value from sensing values of sensing blocks included in the processing region, wherein at least one of sensing values used for deriving the first value is greater than the threshold, and at least one of sensing values used for deriving the second value is greater than the threshold; calculating a ratio of the first value to the second value; and identifying the touch event according to at least the ratio; wherein the step of identifying the touch event according to at least the ratio comprises: comparing the ratio with a predetermined value to identify the touch event, wherein when the ratio is greater than the predetermined value, it is determined that the touch event is a multi-touch event.