A TOUCH PEN, ELECTRONIC DEVICE FOR RECOGNIZING THE TOUCH PEN, AND METHOD OF OPERATING THE ELECTRONIC DEVICE

摘要

An electromagnetic inductive touch pen comprising a hollow housing, a coil body, a magnetic body and a button unit. The coil body is disposed in an interior of the hollow housing and comprising an electrical coil having plurality of coil windings. The magnetic body is separated from the coil body within the hollow housing and arranged to induce the coil body to generate a resonance frequency. The button unit is coupled to the hollow housing and arranged to move relative to the coil windings and to contact the coil windings to adjust the electrical length of the electrical coil so as to adjust the resonance frequency.