DIGITIZER

摘要

The present invention relates to a digitizer. The digitizer includes an input unit including a magnetic field shielding part, an operating coil inducing a magnetic line by making a current flow, a sensing coil inducing a voltage by the magnetic line, and a control part supplying the current to the operating coil and measuring a voltage induced in the sensing coil. The control part calculates coordinates of the input unit by sensing the variation of the voltage induced in the sensing coil when the voltage is changed by the magnetic field shielding part.