Patent ID: 11875005
Assignee: SIGMASENSE, LLC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 12:
13. A method for use in a touch screen display comprises:
providing a display configured to render frames of data into visible images;
providing a plurality of electrodes integrated into the display to facilitate touch sense functionality based on electrode signals having a drive signal component and a receive signal component, wherein the plurality of electrodes includes a plurality of row electrodes and a plurality of column electrodes, wherein the plurality of row electrodes is separated from the plurality of column electrodes by a dielectric material and wherein the plurality of row electrodes and the plurality of row electrodes form a plurality of cross points;
generating, via a plurality of drive-sense circuits coupled to at least some of the plurality of electrodes, a plurality of sensed signals, wherein each the plurality of drive-sense circuits includes a first conversion circuit and a second conversion circuit, and wherein, when a drive-sense circuit of the plurality of drive-sense circuits is enabled to monitor a corresponding electrode of the plurality of electrodes, the first conversion circuit is configured to convert the receive signal component into a sensed signal of the plurality of sensed signals and the second conversion circuit is configured to generate the drive signal component from the sensed signal of the plurality of sensed signals;
receiving, at a processing module that includes at least one memory and at least one processing circuit, the plurality of sensed signals, wherein the sensed signals indicate variations in mutual capacitance associated with the plurality of cross points;
generating, via the processing module and based on the plurality of sensed signals, capacitance image data associated with the plurality of cross points that includes capacitance variation data corresponding to variations of the capacitance image data from a nominal value; and
processing, via the processing module, the capacitance image data to determine a touchless indication proximal to the touch screen display based on a touchless indication threshold.