Touch Sensing Apparatus and Method
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United States of America Patent
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Issued Date -
Sep 12, 2013
app pub date -
Dec 6, 2012
filing date -
Mar 6, 2012
priority date (Note) -
Abandoned
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Abstract
A touch sensing apparatus includes a touch sensing trace and a signal processing circuit. The touch sensing trace is configured to generate a sensing signal including a noise signal. A first input terminal of the signal processing circuit is configured to receive the sensing signal, and a second input terminal of the signal processing circuit is configured to receive a reference voltage signal and selectively coupled to at least one of first electrodes and second electrodes of the touch sensing trace, such that the second input terminal synchronously receives the reference voltage signal and the noise signal associated with the touch sensing trace.
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