ACTIVE CAPACITIVE TOUCH PEN FOR PROVIDING AN ADJUSTABLE ELECTROMAGNETIC FIELD
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United States of America Patent
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Issued Date -
Jul 30, 2015
app pub date -
Apr 3, 2014
filing date -
Jan 29, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An active capacitive touch pen includes a casing unit, a circuit unit, a power supply unit, a pen core unit and an electromagnetic unit. The casing unit includes a pen-shaped casing structure. The circuit unit includes a circuit substrate disposed inside the pen-shaped casing structure and electrically connected to the power supply unit. The pen core unit includes a pen core structure movably disposed inside the pen-shaped casing structure and electrically connected to the circuit substrate, and one part of the pen core structure is exposed outside the pen-shaped casing structure. The electromagnetic unit includes a fixed magnetic structure fixed inside the pen-shaped casing structure and disposed around the pen core structure and a movable magnetic structure fixedly disposed around the pen core structure and electrically connected to the circuit substrate. The movable magnetic structure is separated from the fixed magnetic structure by a predetermined adjustable distance.
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