CAPACITIVE SENSING WITHOUT A BASELINE

摘要

A processing system for a capacitive sensing device, including: a sensor module coupled to multiple sensor electrodes and configured to receive multiple resulting signals from the multiple sensor electrodes, where the multiple electrodes includes a first sensor electrode, a second sensor electrode adjacent to the first second electrode, a third sensor electrode adjacent to the first sensor electrode and the second sensor electrode, and a fourth sensor electrode adjacent to the third sensor electrode; and a determination module configured to: determine, based on the multiple resulting signals, first differential capacitive sensing data between the first sensor electrode and the second sensor electrode; determine, based on the multiple resulting signals, second differential capacitive sensing data between the third sensor electrode and the fourth sensor electrode; and determine user contact information based on at least one of the first differential capacitive sensing data and the second differential capacitive sensing data.

主权项

1. A processing system for a capacitive sensing device, comprising:
a sensor module coupled to a plurality of sensor electrodes and configured to receive a first plurality of resulting signals from the plurality sensor electrodes, wherein the plurality of sensor electrodes comprises a first sensor electrode, a second sensor electrode adjacent to the first second electrode, a third sensor electrode adjacent to the first sensor electrode and the second sensor electrode, and a fourth sensor electrode adjacent to the third sensor electrode; and a determination module configured to:
determine, based on the first plurality of resulting signals, first differential capacitive sensing data between the first sensor electrode and the second sensor electrode;determine, based on the first plurality of resulting signals, second differential capacitive sensing data between the third sensor electrode and the fourth sensor electrode; anddetermine user contact information based on at least one of the first differential capacitive sensing data and the second differential capacitive sensing data.