Method for filtering touch noise and touch device
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United States of America Patent
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Jun 25, 2019
Grant Date -
Oct 26, 2017
app pub date -
Nov 23, 2016
filing date -
Apr 21, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
The present disclosure relates to a method for filtering touch noise and a touch device. The method includes: when normal signals for at least one row of the touch electrodes are input to the touch panel, obtaining a standard capacitance value of each of the touch electrodes, and obtaining a connection capacitance value of each of the touch electrodes; for each of the touch electrodes: subtracting a connection capacitance value of another touch electrode, which is in the same row with and adjacent to the touch electrode in a first direction, from the connection capacitance value of the touch electrode to obtain a capacitance difference value; from the last touch electrode, calculating the capacitance value of the restoration signal for each touch electrode along a second direction opposite to the first direction. Coordinates are calculated according to the capacitance values of the restoration signals for individual touch electrodes.
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