DIGITAL PEN AND PORTABLE ELECTRONIC DEVICE INCLUDING SAME

    公开(公告)号:US20230359289A1

    公开(公告)日:2023-11-09

    申请号:US18222148

    申请日:2023-07-14

    CPC classification number: G06F3/03545 H05K5/0086

    Abstract: A digital pen includes a housing, a pen tip exposed through an end of the housing, a rod extending from the pen tip into the housing, a resonance circuit and a control bar. The resonant circuit includes a coil to generate an electric current by a first signal, a resonance capacitor for discharging the accumulated electric charge to the coil such that the coil generates a second signal, and a variable capacitor for changing the resonance frequency of the second signal depending on pressure transferred from the pen tip through the rod. The control bar is movable from a first position, in which the control bar does not surround the coil, to a second position, in which the control bar surrounds a part of the coil, and has a metallic part to change the resonance frequency of the second signal.

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