Image projection method and projector

Details Image projection method and projector Image projection method and projector

2011-03-22

2011-03-22

Luu, Thanh X (Department: 2878)

Optics: image projectors

Distortion compensation

C348S747000

Reexamination Certificate

active

07909470

ABSTRACT:
An image projection method and a projector are provided to be able to change aspect ratio or resolution of a projection image, without setting of keystone correction again. The projector sets a displayable region with a shape according to an aspect ratio and a resolution of the projection image. The projector converts coordinates of the displayable region into coordinates in a screen coordinate system, and generates a rectangular area with a desired aspect ratio in a region corresponding to the displayable region in the screen coordinate system and a portion included in a projecting range. The projector converts the coordinates of a rectangular area into coordinates of a range corresponding to the rectangular area in the panel coordinate system, forms an image in a range corresponding to the rectangular area, and projects the projection image on the screen.

REFERENCES:
patent: 7018050 (2006-03-01), Ulichney et al.
patent: 2003-29714 (2003-01-01), None
patent: 2004-363665 (2004-12-01), None
patent: 2005-38388 (2005-02-01), None

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