Patent ID: 9715319
Date: 2017-07-25
CPC Classifications: G06F

Claim:
1. A projected capacitive touch sensor, comprising: a sensor grid including one or more electrically conductive rows and two or more electrically conductive columns; an adaptive circuit that receives a signal associated with a first portion of the two or more columns and includes a direct route and an attenuator route, the attenuator route including an attenuator circuit for applying an amplitude decrease, an amplitude increase, or a phase shift to the sensor grid's signal, wherein the adaptive circuit is configured to switch between the direct route and the attenuator route; and a differential circuit that is configured to generate a differential signal based on an output signal from the adaptive circuit and a signal associated with a second portion of the two or more columns, wherein a resistance or a capacitance of the adaptive circuit is sized to render a non-zero differential signal.