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Multi-stage stylus detection

  • US 9,459,749 B1
  • Filed: 04/14/2015
  • Issued: 10/04/2016
  • Est. Priority Date: 01/14/2012
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a sense array comprising a plurality of electrodes;

    an analog-to-digital converter (ADC) coupled to the sense array and configured to receive signals from the sense array in a first mode and in a second mode; and

    a processing device coupled to the sense array and to the ADC, the processing device configured at least to;

    set the ADC to a first sampling frequency in the first mode;

    and set the ADC to a second sampling frequency in the second mode.

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