INFORMATION INPUT DEVICE AND A METHOD THEREOF CAPABLE OF AUTOMATICALLY CONVERTING AN INFORMATION INPUT METHOD USING A TOUCH PAD INTO AN INFORMATION INPUT METHOD USING AN ULTRA SONIC SIGNAL

摘要

PURPOSE: An information input device and a method thereof are provided to input information using an electronic pen which emits an ultrasonic signal by including a receiver which receives an ultrasonic signal and a reference signal.;CONSTITUTION: An ultrasonic receiver(120) receives an ultrasonic signal which is generated from an electronic pen. A reference signal receiver(110) receives a reference signal which is generated from the electronic pen. A location measurer(130) measures the location of the electronic pen through difference between reference signal receiving time and ultrasonic receiving time. A touch panel senses the contact of a user.;COPYRIGHT KIPO 2012