Method and apparatus for increasing effective contrast radio...

Details Method and apparatus for increasing effective contrast radio... Method and apparatus for increasing effective contrast radio...

2007-05-18

2009-08-18

Koval, Melissa J (Department: 2862)

Optics: image projectors

Lamp control

C353S088000, C353S097000, C353S121000, C348S744000, C348S674000

Reexamination Certificate

active

07575330

ABSTRACT:
The present invention is a method and apparatus for increasing the effective contrast ratio and brightness yields for digital light valve image projectors using a variable luminance control mechanism (VLCM), associated with the projector optics, for modifying the light output and provide a correction thereto; and an adaptive luminance control module (ALCM) for receiving signals from the video input board, the adaptive luminance control module producing a signal on a VLCM bus connecting the variable luminance control mechanism and the adaptive luminance control module, the signal causing the variable luminance control mechanism to change the luminance of the light output and provide a corrected video signal for the projector.

REFERENCES:
patent: 5379083 (1995-01-01), Tomita
patent: 5386253 (1995-01-01), Fielding
patent: 5442484 (1995-08-01), Shikawa
patent: 5519518 (1996-05-01), Watanabe et al.
patent: 5550604 (1996-08-01), Gale et al.
patent: 5559551 (1996-09-01), Sakamoto et al.
patent: 5717422 (1998-02-01), Fergason
patent: 5806950 (1998-09-01), Gale et al.
patent: 5923372 (1999-07-01), Han
patent: 6462789 (2002-10-01), Zoso et al.
patent: 6631995 (2003-10-01), Stanton et al.
patent: 6747708 (2004-06-01), Taniai et al.
patent: 6765544 (2004-07-01), Wilson
patent: 6816141 (2004-11-01), Fergason
patent: 7046852 (2006-05-01), Kerofsky
patent: 7079693 (2006-07-01), Kerofsky
patent: 7093941 (2006-08-01), Kawashima et al.
patent: 7190411 (2007-03-01), Cloutier
patent: 2002/0021292 (2002-02-01), Sakashita
patent: 2002/0067413 (2002-06-01), McNamara
patent: 2003/0146919 (2003-08-01), Kawashima et al.
patent: 2004/0001184 (2004-01-01), Gibbons et al.
patent: 2004/0140982 (2004-07-01), Pate
patent: 2005/0052618 (2005-03-01), Ulichney et al.
patent: 2007/0091213 (2007-04-01), Jaspers
patent: 2007/0216876 (2007-09-01), Narikawa
patent: 2008/0186413 (2008-08-01), Someya
patent: 2003-107422 (2003-04-01), None
Machine English Translation of JP, 2003-107422, Japan, Apr. 9, 2003, 30 pages.

Affiliated with

Also associated with

Rating

Method and apparatus for increasing effective contrast radio... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for increasing effective contrast radio..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for increasing effective contrast radio... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4133667