Sensitivity region of interest processing (ROIP) for input/output (I/O) operative touch sensor device (TSD)

A touch sensor device (TSD) comprising:

• a plurality of TSD electrodes associated with a surface of the TSD, wherein an overlay that includes one or more marker electrodes also being associated with a region of the surface of the TSD, wherein the plurality of TSD electrodes includes a first subset of the plurality of TSD electrodes aligned in a first direction and a second subset of the plurality of TSD electrodes that are separated from the first subset of the plurality of TSD electrodes by a dielectric material and are aligned in a second direction;
• a plurality of drive-sense circuits (DSCs) operably coupled to the plurality of TSD electrodes, wherein a DSC of the plurality of DSCs is operably coupled to receive a reference signal and to generate a TSD electrode signal based on the reference signal, wherein, when enabled, the DSC operably coupled and configured to:
• provide the TSD electrode signal to a TSD electrode of the plurality of TSD electrodes and simultaneously to sense a change of the TSD electrode signal based on a change of impedance of the TSD electrode caused by capacitive coupling between the TSD electrode and the one or more marker electrodes based on the overlay being associated with the at least a portion of the surface of the TSD;
• and
• generate a digital signal that is representative of the change of impedance of the TSD electrode;
• memory that stores operational instructions;
• and
• one or more processing modules operably coupled to the plurality of DSCs and the memory, wherein, when enabled, the one or more processing modules is configured to execute the operational instructions to:
• generate the reference signal;
• process the digital signal generated by the DSC of the plurality of DSCs and a plurality of other digital signals generated by other DSCs of the plurality of DSCs to determine the region of the surface of the TSD that is associated with the overlay to determine one or more characteristics of the overlay that is associated with the region of the surface of the TSD;
• and
• adapt sensitivity of the TSD within the region of the surface of the TSD that is associated with the overlay including to change a number of operational electrodes of the plurality of TSD electrodes that are implemented to service the region of the surface of the TSD that is associated with the overlay in accordance with detecting user interaction with the overlay.