Presentation board digitizers

Details Presentation board digitizers Presentation board digitizers

G - Physics

08

C

G08C 21/00 (2006.01) G06F 3/033 (2006.01) G09G 5/00 (2006.01)

Patent

CA 2371960

A handheld device (200) includes a housing (202) having a cylindrical bore (204) therein and which terminates at a distal end (206) of the housing with a central orifice communicating therewith. The housing serves for receiving a portion of a body of a drawing implement with its drawing tip extending from the central orifice. The device (200) further includes an ultrasonic receiver or transmitter (220) mounted within the housing, remote from the drawing tip, yet in close proximity with the bore. This device serves for receiving or transmitting an intermittent ultrasound signal through the bore and the plurality of openings, thereby enabling triangulation of the drawing tip.

Ce dispositif à main (200) comprend un logement (202) dans lequel a été ménagé un alésage cylindrique (204) et dont l'extrémité distale se termine par un orifice central communiquant avec l'alésage. Dans ce logement prend place une partie du corps d'un instrument à dessin dont la pointe à dessiner sort de l'orifice susmentionné. Le logement de ce dispositif (200) renferme également un récepteur ou un émetteur ultrasonore (220), éloigné de la pointe à dessiner mais très proche de l'alésage. Ce dispositif permet la réception ou l'émission d'un signal ultrasonore par l'alésage et la pluralité d'ouvertures, ce qui autorise la triangulation de la pointe à dessiner.

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