Patent ID: 8477106
Filing Date: 2013-07-02
Classification: G06F

Abstract:
1. A capacitive touchscreen system, comprising: a substrate comprising a touch sensitive area; electrodes provided on the substrate within the touch sensitive area, the electrodes having substantially triangular shapes, the electrodes being interlaced with one another in a non-overlapping pattern on the substrate, the electrodes each having a longitudinal axis that defines a coordinate axis parallel to the longitudinal axis, the electrodes configured to generate corresponding signals in response to a touch on the substrate; a controller; and electronic channels within the controller, each of the electronic channels being connected to one electrode or to a group of semi-adjacent electrodes, the controller configured to detect the signals from the electronic channels and to identify a signal cluster comprising the signals from a series of at least two adjacent electronic channels, the controller identifying a first electronic channel within the series that has a local maximum signal, the controller applying a first weight with a first numerical value to a first signal from the first electronic channel that has the local maximum signal to generate a first weighted signal and applying a second weight with a second numerical value to a second signal from a second electronic channel within the series to generate a second weighted signal, the first numerical value being different than the second numerical value, the controller determining a location of the touch along the coordinate axis based on the first weighted signal and the second weighted signal.