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DUAL-MODE CAPACITANCE SENSING IN A TOUCH PANEL SENSOR

  • US 20140145997A1
  • Filed: 11/26/2012
  • Published: 05/29/2014
  • Est. Priority Date: 11/26/2012
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a sensor configured to detect a change in capacitance associated with a touch event upon a touch panel;

    a measuring component coupled to the sensor, the measuring component configured to detect mutual-capacitance associated with the sensor during a first mode of operation and to detect self-capacitance associated with the sensor during a second mode of operation;

    a selection component coupled to the sensor and to the measuring component, the selection component configured to receive a selection signal to cause selection of at least the first mode of operation or the second mode of operation; and

    a driver component coupled to the selection component, the driver component configured to generate a drive signal, the drive signal furnished to the sensor during the first mode of operation and to the measuring module during the second mode of operation,wherein the drive signal includes a first amplitude characteristic during the first mode of operation and includes a second amplitude characteristic during the second mode of operation, the second amplitude characteristic different from the first amplitude characteristic.

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