Touch panel scanning method, circuit and system
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United States of America Patent
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Jun 13, 2017
Grant Date -
Nov 12, 2015
app pub date -
May 7, 2014
filing date -
May 7, 2014
priority date (Note) -
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Abstract
A touch panel includes a plurality of drive lines, a plurality of orthogonal sense lines, and a plurality of sensors. A method of controlling the touch panel to detect touches includes simultaneously applying a drive signal to each of a group of drive lines of the touch panel. Each of the drive signals is applied to a corresponding drive line in the group during a time slot and all the applied drive signals having the same electrical characteristics over the time slot. The method includes sensing sense signals generated on the sense lines in response to the applied drive signals and processing the sense signals to detect touches of the touch panel.
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