TOUCH DEVICE AND MEASURING VOLTAGE DYNAMIC ADJUSTMENT METHOD THEREOF
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United States of America Patent
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Issued Date -
Nov 27, 2014
app pub date -
Mar 14, 2014
filing date -
May 21, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A touch device and a measuring voltage dynamic adjustment method thereof are provided. The touch device comprises a touch panel, a touch sensing circuit and a processing unit. The touch sensing circuit electrically connected to the touch panel is configured to provide a first measuring voltage to the touch panel and sense capacitance variation of the touch panel to generate a plurality of sensing signals. The processing unit electrically connected to the touch sensing circuit is configured to receive the sensing signals, determine whether a touch is caused by a stylus according to the sensing signals and if yes, enable the touch sensing circuit to provide a second measuring voltage to the touch panel. The second measuring voltage is larger than the first measuring voltage.
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