VISIBLE POINTER TRACKING SYSTEM AND METHOD USING SEPARATELY DETECTABLE POINTER TRACKING SIGNAL

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for easily tracking the position of a pointer on a display picture of presentation. SOLUTION: Pointer tracking uses a signal possessing an optical characteristic that is separately detectable from a projected display. An area of the projected display is sensed. Sensing is conductive with filtering for the separately detected optical characteristic. COPYRIGHT: (C)2004,JPO&NCIPI