Computer graphics processing and selective visual display system – Display driving control circuitry – Intensity or color driving control
Reexamination Certificate
2011-03-15
2011-03-15
Lefkowitz, Sumati (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Intensity or color driving control
C345S001100
Reexamination Certificate
active
07907154
ABSTRACT:
The present disclosure provides methods and apparatuses for on-site calibration of a visual display sign. In one exemplary implementation of the invention, an imaging device captures image data from a visual display sign. The imaging device can include a CCD digital camera and optics for long-range imaging. The captured image data is sent to an interface that compiles the data. The interface then calculates correction factors for the image data that may be used to achieve target color and brightness values for the image data. The interface then uploads the adjusted image data back to the visual display sign.
REFERENCES:
patent: 4379292 (1983-04-01), Minato et al.
patent: 4825201 (1989-04-01), Watanabe et al.
patent: 4875032 (1989-10-01), McManus et al.
patent: 5479186 (1995-12-01), McManus et al.
patent: 5563621 (1996-10-01), Silsby
patent: 6020868 (2000-02-01), Greene et al.
patent: 6243059 (2001-06-01), Greene et al.
patent: 6459425 (2002-10-01), Holub et al.
patent: 6491412 (2002-12-01), Bowman et al.
patent: 6552706 (2003-04-01), Ikeda et al.
patent: 6559826 (2003-05-01), Mendelson et al.
patent: 6611241 (2003-08-01), Firester et al.
patent: 6677958 (2004-01-01), Cottone et al.
patent: 6704989 (2004-03-01), Lutz et al.
patent: 6822802 (2004-11-01), Nakano et al.
patent: 7012633 (2006-03-01), Jenkins
patent: 7161558 (2007-01-01), Eidem et al.
patent: 2003/0016198 (2003-01-01), Nagai et al.
patent: 2003/0156073 (2003-08-01), Van Zon
patent: 2004/0066515 (2004-04-01), Ott
patent: 2004/0179208 (2004-09-01), Hsu
patent: 05-064103 (1993-03-01), None
patent: 2001-222259 (2001-08-01), None
patent: 2003-099003 (2003-04-01), None
Jenkins, David R., et al, “Digital imaging colorimeter for fast measurement of chromaticity coordinate and luminance uniformity of displays,”Jan. 23, 2001, 12 pages, Radiant Imaging, Chapel Hill, NC; US.
Ohno, Yoshi, “CIE Fundamentals for Color Measurements,” 2000, pp. 1-6, IS&T NIP16 Conference, National Institute of Standards and Technology, Gaithersberg, MD, US.
Ohno, Yoshihiro, et al, “Four-Color Matrix Method for Correction of Tristimulus Colorimeters,” 1997, pp. 1-5, Proc., IS&T Fifth Color Imaging Conference, 301-305, National Institute of Standards and Technology, Gaithersberg, MD, US.
Albrecht Richard E.
Rykowski Ronald F.
Amadiz Rodney
Lefkowitz Sumati
Perkins Coie LLP
Radiant Imaging Inc.
LandOfFree
Method and apparatus for on-site calibration of visual displays 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 on-site calibration of visual displays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for on-site calibration of visual displays will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2772587