COORDINATE CALIBRATION METHOD OF DIGITIZER, APPARATUS THEREOF, AND ELECTRONIC PEN THEREOF

摘要

The present invention relates to a method and an apparatus for calibrating coordinates in a digitizer and an electronic pen used in the same method and the same apparatus. An embodiment of the present invention relates to the method for calibrating a coordinate of the electronic pen in the digitizer comprising: a step of sensing one or more magnetic fields including different center shafts formed with the electronic pen; a step of determining the slope of the electronic pen based on the number of the sensed magnetic fields; and a step of determining the application of a calibration value for calibrating the coordinate of the electronic pen based on the determined result. According to the present invention, the method has a good point for accurately recognizing the coordinates by considering the slope direction of the electronic pen and of the slope of the electronic pen. [Reference numerals] (501) Sensing magnetic fields formed by an electronic pen; (503) Is the number of the sensed magnetic fields less than 2?; (505) Recognizing a coordinate, in which a magnetic field is detected, as a coordinate inputted by a user; (515) Determining the slope direction of the electronic pen; (517) Applying a calibration value by considering the sloped direction; (519) Recognizing the coordinate with the applied calibration value as a coordinate inputted by a user; (521) Executing a function according to the recognized coordinate; (AA) Start; (BB) No; (CC) Yes