×

Capacitive sensing during non-display update times

  • US 9,007,336 B2
  • Filed: 09/07/2012
  • Issued: 04/14/2015
  • Est. Priority Date: 09/07/2011
  • Status: Active Grant
First Claim
Patent Images

1. A processing system for a display device comprising an integrated capacitive sensing device, the processing system comprising:

  • a driver module comprising driver circuitry, the driver module coupled to a plurality of common electrodes configured to be driven for updating a plurality of display lines in a display screen of the display device and performing capacitive sensing,wherein the driver module is configured to drive a first one of the common electrodes for updating a first one of the display lines during a first time period of a first display frame and drive a second one of the common electrodes for updating a second one of the display lines during a second time period of the first display frame, andwherein the driver module is further configured to drive a first transmitter electrode for capacitive sensing during a third time period of the first display frame, the third time period being at least as long as the first time period and occurring after the first time period and before the second time period, wherein the first transmitter electrode comprises at least two electrodes of the plurality of common electrodes;

    a receiver module coupled to a plurality of receiver electrodes and configured to receive resulting signals while driving the first transmitter electrode during the third time period; and

    a determination module configured to determine positional information for an input object based on the resulting signals.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×