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Systems and methods for determining user input using simultaneous transmission from multiple electrodes

  • US 8,766,949 B2
  • Filed: 12/22/2011
  • Issued: 07/01/2014
  • Est. Priority Date: 12/22/2011
  • Status: Active Grant
First Claim
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1. A processing system for an input device comprising:

  • a sensor module comprising sensor circuitry, the sensor module configured to;

    simultaneously transmit a first transmitter signal with a first transmitter electrode and a second transmitter signal with a second transmitter electrode, wherein the first transmitter signal corresponds to an upper sideband and the second transmitter signal corresponds to a lower sideband; and

    receive a resulting signal with a receiver electrode, wherein the resulting signal comprises effects corresponding to both the first transmitter signal and the second transmitter signal; and

    a determination module configured to;

    demodulate the resulting signal to produce a first output signal and a second output signal;

    determine positional information for an input object based on at least one of the first output signal and the second output signal.

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