INPUT/OUTPUT (I/O) OPERATED TOUCH SENSOR DEVICE (TSD)

A touch sensor device (TSD) includes a TSD electrode associated with a surface of the TSD. In addition, a cover comprising a marker electrode is also associated with at least a portion of the surface of the TSD. The TSD also includes a drive sense circuit (DSC) operably coupled to the plurality of TSD electrodes. The DSC is configured to provide a TSD electrode signal to a TSD electrode and simultaneously sense a change in the TSD electrode signal based on a change in impedance of the TSD electrode caused by a capacitive coupling between the TSD electrode and the marker electrode of the cover. A processing module is configured to process a digital signal generated by the DSC to determine a characteristic of the covering associated with the at least a portion of the surface of the TSD. 一种触摸传感器装置(TSD)包含与所述TSD的表面相关联的TSD电极。此外，包含标记电极的覆盖物也与所述TSD的所述表面的至少一部分相关联。所述TSD还包含可操作地耦接到多个TSD电极的驱动感测电路(DSC)。DSC被配置成将TSD电极信号提供到TSD电极，并且同时基于由所述TSD电极与所述覆盖物的所述标记电极之间的电容耦接引起的所述TSD电极的阻抗变化来感测所述TSD电极信号的变化。处理模块被配置成处理由所述DSC生成的数字信号以确定与所述TSD的所