Position and function input system for a large area display

G - Physics – 06 – F

Patent

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G06F 3/033 (2006.01)

Patent

CA 2051204

An input device for simultaneously entering position and function information into an electronic system having a viewing surface upon which is displayed information generated by the electronic system. A light pen is provided for projecting a light spot onto the viewing surface for indicating the position of a location marker thereon and for indicating a function to be performed. The optical output of the light pen is modified to represent the selected function. A sensor receives the light spot and, in conjunction with discrimination electronics, determines the location of the centroid of the light spot relative to the viewing surface, and determines the function to be performed.

L'invention porte sur un dispositif d'entrée simultanée de données de position et de fonction dans un système électronique pourvu d'une surface de visualisation sur laquelle est affichée de l'information produite par un système électronique. Un photostyle sert à projeter un point lumineux sur la surface de visualisation afin d'y indiquer la position d'un marqueur de localisation et d'indiquer une fonction à effectuer. La sortie optique du photostyle est modifiée de façon à représenter la fonction choisie. Un capteur reçoit le point lumineux et, conjointement avec des dispositifs électroniques discriminateurs, détermine la position du centroïde du point lumineux par rapport à la surface de visualisation, et détermine la fonction à exécuter.

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