CONTROL METHOD AND ELECTRONIC STYLUS FOR TOUCH INPUT TO A CAPACITIVE TOUCHPAD MODULE
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United States of America Patent
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Issued Date -
Feb 6, 2014
app pub date -
Sep 9, 2013
filing date -
Jan 6, 2009
priority date (Note) -
Abandoned
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Abstract
An electronic stylus emits an excitation signal to apply to a trace of a capacitive touchpad module near a touch point when the electronic stylus touches the capacitive touchpad module, so as to change a waveform of a charging/discharging signal in the trace, and depending on the waveform variation, the capacitive touchpad module can identify the touch point.
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