CPC G06F 3/0412 (2013.01) [G06F 3/044 (2013.01); G06F 3/0416 (2013.01); G06F 3/04886 (2013.01)] | 17 Claims |
1. A touch sense control circuit comprises:
an array of drive sense circuits that, when operably coupled to an array of electrodes of a touch screen:
generates drives signals based on reference signals;
provides the drive signals to the array of electrodes;
senses effects of the array of electrodes have on the drive signals; and
generate an array of sensed signals based on the effects;
a reference signal generator that, when enabled, generates the reference signals;
a processing core operably coupled to:
in a first mode of a frame, produce an array of noise canceling signals based on the array of sensed signals; and
in a second mode of the frame, produce touch data based on the array of sensed signals and the array of noise canceling signals.
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