ACTIVE CAPACITIVE STYLUS AND SENSING METHOD THEREOF
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United States of America Patent
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Issued Date -
Dec 31, 2015
app pub date -
Jun 25, 2015
filing date -
Jun 25, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An active capacitive stylus and a sensing method thereof are provided. The active capacitive stylus includes a pen tip, a frequency adjuster, a frequency generating module, and a control module. The pen tip includes a contact component for moving in response to a pressing force. The frequency adjuster simultaneously moves with the contact component. The frequency generating module generates an induction frequency according to an induction distance between the frequency adjuster and the frequency generating module. The control module is electrically connected to the frequency generating module and calculates a pressure value according to the induction frequency.
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