WIRELESS TABLET DEVICE AND METHOD FOR LOCATING ELECTRONIC PEN OF THE SAME

摘要

PURPOSE: A wireless tablet apparatus and an electronic pen location recognizing method thereof are provided to rapidly detect a location of an electronic pen even though small energy is supplied to an electronic pen. CONSTITUTION: A second coil selecting unit(150) activates a selected receiving coil within a range of a signal applying time. A sample hold signal generating unit(170) outputs a sample hold signal from a starting point of each signal applying time. A receiving circuit(180) detects a location of an electronic pen based on the size of a voltage detected from a receiving coil. [Reference numerals] (110) Female signal creation unit; (122) First switch controller; (140) Timing controller; (152) Second switch controller; (170) Sample hold signal generating unit; (180) Receiving circuit; (AA) Electronic pen