System and method for registering motion picture film

G - Physics – 03 – B

Patent

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G03B 1/42 (2006.01) G03B 1/44 (2006.01)

Patent

CA 2396816

A system and method for registering the frames of film with respect to an aperture (32) in a motion picture projector. A registration reference mark is applied to each frame corresponding to the location of the frame on the film. When the film is intermittently stopped in the projector's film gate (22), the registration reference mark is read to determine the location of that frame relative to the immediately preceding frame. If the frame in the gate (22) is misregistered, the gate is moved to correctly register the frame prior to projection. By properly registering the frames, the "jitter" and "weave" associated with conventional projectors is eliminated and resolution of the projected film image is enhanced.

L'invention concerne un système et un procédé d'enregistrement des trames d'un film par rapport à une ouverture (32) dans un projecteur de cinéma. Une marque de référence d'enregistrement est appliquée à chaque trame en fonction de l'emplacement de celle-ci sur le film. Lorsque le film est arrêté de manière intermittente dans le couloir de film du projecteur (2), la marque de référence d'enregistrement est lue de manière à déterminer l'emplacement de cette trame par rapport à la trame la précédant immédiatement. Si la trame est mal enregistrée dans le couloir (22), le couloir est déplacé afin d'enregistrer la trame de manière correcte avant la projection. En enregistrant de manière correcte les trames, la <= gigue >= et l'<= effet d'ondulation >= associés à des projecteursclassiques sont éliminés et la résolution de l'image du film projeté est améliorée.

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