Coordinate Measurement in Wired Tablet Using a Electromagnetic Induction System

전자기유도기술을 이용한 유선 태블릿 좌표 측정

In this paper, we would like to introduce a simple and low cost wired pointing device by using a electromagnetic induction. A number of patents of Wacom describe electronic drawing devices or styluses. The movement of the stylus over a tablet is traced electronically and used applied to a resonant circuit in the stylus. Electromagnetic radiation emitted by the resonant circuit is detected by a sensing mechanism and location processing is used to locate the stylus. In this research, difference coil principle is used to detect the emitted radiation of the resonant circuit in the pen. This detection device shows good performance to detect the location of the pen on the tablet.