Digital correction module for video projector

Details Digital correction module for video projector Digital correction module for video projector

2006-02-14

2006-02-14

Lee, Michael H. (Department: 2614)

Television

Video display

Projection device

C348S383000

Reexamination Certificate

active

06999133

ABSTRACT:
Digital correction module for video projector where a correction module is provided to give a non-linear re-imaging of an image so that it is displayed correct on a non-ideal screen (curved screen) where a correction module is provided in each of a plurality of video projectors after a common image source in order to create a large, of several composite sub image, projected image of said image source. The correction module comprises a sequencer (1), a pixel write control (2), a parameter storage (7), a read address generator (13), a coefficient generator (5), a scaling generator (6), an adder (8), a pixel storage (3), a vertical mixer (9), a horizontal mixer (10) and a look up function means (12) for correction of differences in the border area of the image of the respective projectors such as geometry correction, soft transition tuning, vignette correction and gamma correction.

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Patent Abstract of Japan, 9-247498 A, Sep. 19, 1997, Hughes JVC Technol. Corp.

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