Active stylus with passive mutual measurements
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United States of America Patent
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Nov 17, 2020
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N/A
app pub date -
Nov 20, 2018
filing date -
Aug 15, 2012
priority date (Note) -
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Abstract
An apparatus includes a sense unit operable to sense a plurality of first signals transmitted on one or more vertical lines and one or more horizontal lines of a touch sensor, the one or more vertical lines and the one or more horizontal lines operable to drive the plurality of first signals. The apparatus also includes a drive unit operable to transmit, in response to the sense unit sensing at least one of the plurality of first signals, a second signal to the one or more vertical lines and the one or more horizontal lines, the second signal changing an effective charge of the one or more vertical lines and the one or more horizontal lines.
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