Touch sensor device and electronic device
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Dec 22, 2014
filing date -
Dec 24, 2013
priority date (Note) -
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Abstract
A touch sensor device includes: an impedance surface where plural sets of reference coordinates are set at plural locations; plural detection electrodes arranged on the impedance surface; a detection circuit configured to detect electric currents passing the detection electrodes; a storage section storing reference standardized values and reference normalized values; a position coordinate calculation section configured to obtain standardized values calculated by standardizing the electric currents detected in each detection period and to map the standardized values onto position coordinates; a first normalized value calculation section configured to map the position coordinates onto first normalized values; a second normalized value calculation section configured to calculate second normalized values by normalizing the electric currents in each detection period; and a touch gesture detection section configured to detect a motion of pointers on the basis of a time variation of the first normalized values and the second normalized values.
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