Method for compensating geometric image failure of video...

Details Method for compensating geometric image failure of video... Method for compensating geometric image failure of video...

G - Physics

02

B

G02B 27/18 (2006.01) H04N 5/74 (2006.01) H04N 9/31 (2006.01)

Patent

CA 2267786

A device for displaying video images on a projection area on which the display is slanted contains a source (10) whose intensity can be modulated for emitting an essentially parallel light beam for a sequential illumination of video image pixels. The invention also contains a deflecting device (11, 12) for line and image rasterization of the light beam and a control device (17) which controls the intensity modulation for the light beam and its deflection (11, 12) according to a function which is determined by a calculated equalization of the image in relation to the slanting.

L'invention concerne un dispositif pour la représentation d'images vidéo sur une surface de projection (101), dispositif dans lequel la représentation sur cette surface est réalisée avec une inclinaison. Le dispositif selon l'invention comprend une source à intensité modulable (10) qui émet un faisceau lumineux pratiquement parallèle pour un éclairage séquentiel de points d'image de l'image vidéo, un dispositif de déviation (11, 12) pour le balayage ligne et image du faisceau lumineux, et un dispositif de commande (17) qui commande aussi bien la modulation d'intensité que la déviation (11, 12) du faisceau lumineux, selon une fonction obtenue par une correction calculée de l'image, au moins en ce qui concerne l'inclinaison.

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