Patent ID: 8847899
Filing Date: 2014-09-30
Classification: G06F

Abstract:
1. A processing system for an input device, the processing system comprising: a sensor module comprising sensor circuitry, the sensor module configured to transmit a first transmitter signal with a transmitter electrode and receive a resulting signal with a receiver electrode, wherein the first transmitter signal comprises a first transmitter frequency, and the resulting signal comprises effects corresponding to the first transmitter signal; and a demodulation module configured to acquire the resulting signal on an input, demodulate the resulting signal to produce a pair of output signals including an upper sideband signal and a lower sideband signal, selectably determine a first measurement of a change in capacitive coupling between the transmitter electrode and the receiver electrode based on at least one of the upper sideband signal and the lower sideband signal, and determine positional information for an input object based on the first measurement.