The present invention is an optical electronic input device for identifying the coordinates of an object in a given area. The device may capture two-dimensional or three-dimensional input information, using a minimal number of optical units (one for two dimensional coordinates and two for three dimensional...http://www.google.fr/patents/US20080062149?utm_source=gb-gplus-shareBrevet US20080062149 - Optical coordinate input device comprising few elements
Optical coordinate input device comprising few elements
Numéro de demande: 10/556,026 Numéro de publication: US 2008/0062149 A1 Date de dépôt: 3 déc. 2003 Brevet délivré: US7557935 ( Date de délivrance 7 juil. 2009)
