Shifting carrier frequency to avoid interference
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United States of America Patent
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Mar 20, 2018
Grant Date -
Sep 1, 2011
app pub date -
Feb 24, 2011
filing date -
Feb 26, 2010
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Abstract
In a method of avoiding interference in an integrated capacitive sensor device and display device, a first transmitter signal having a first frequency is transmitted with a combination electrode of the integrated capacitive sensor device and display device. The combination electrode is configured for both capacitive sensing and display updating. A shift is made from transmitting the first transmitter signal with the combination electrode to transmitting a second transmitter signal with the combination electrode. The shift is made by changing a duration of at least one non-display update time period of the display device. The second transmitter signal has a second frequency, and the shifting occurs based at least in part upon an amount of interference.
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