Television – Video display – Projection device
Reexamination Certificate
2005-10-25
2005-10-25
Yenke, Brian P. (Department: 2614)
Television
Video display
Projection device
C348S187000, C348S189000, C348S191000, C348S246000, C348S615000, C348S657000, C348S658000, C348S813000
Reexamination Certificate
active
06958785
ABSTRACT:
The need is met according to the present invention by providing a method of correcting pixel by pixel variations in a display, the method including the steps of creating a defect map of pixel intensity offsets for the display; correcting an input signal according to the defect map; and displaying the corrected input signal on the display, wherein the offset defect map is created by modulating a pixel in the display at a predetermined rate at a predetermined intensity; sensing the display with a photosensor to generate a sensed signal; demodulating the signal with a synchronous demodulator at the predetermined rate to produce a demodulated signal representing a sensed intensity; and employing the sensed intensity and the predetermined intensity to generate a correction offset.
REFERENCES:
patent: 5319459 (1994-06-01), Mochizuki et al.
patent: 5465121 (1995-11-01), Blalock et al.
patent: 5475447 (1995-12-01), Funado
patent: 5504504 (1996-04-01), Markandey et al.
patent: 5510851 (1996-04-01), Foley et al.
patent: 5680588 (1997-10-01), Gortych et al.
patent: 5793441 (1998-08-01), Hagerman
patent: 5838396 (1998-11-01), Shiota et al.
patent: 5918192 (1999-06-01), Tomaszewski
patent: 6061102 (2000-05-01), Sheppard et al.
patent: 6188427 (2001-02-01), Anderson et al.
patent: 6219099 (2001-04-01), Johnson et al.
patent: 6246446 (2001-06-01), Heimbuch et al.
patent: 6359662 (2002-03-01), Walker
patent: 6400400 (2002-06-01), Isnardi et al.
patent: 6456339 (2002-09-01), Surati et al.
patent: 6483537 (2002-11-01), Mayer et al.
patent: 6526366 (2003-02-01), Dunton
patent: 6593961 (2003-07-01), Perino
patent: 6618115 (2003-09-01), Hiroki
patent: 6628329 (2003-09-01), Kelly et al.
patent: 6642971 (2003-11-01), Takeuchi
patent: 6717625 (2004-04-01), Thielemans
patent: 6768509 (2004-07-01), Bradski et al.
patent: 6816155 (2004-11-01), Ogawa
patent: 2002/0105579 (2002-08-01), Levine et al.
patent: 2002/0158977 (2002-10-01), Hamilton
Markis William R.
Orfitelli William A.
Eastman Kodak Company
Shaw Stephen H.
Yenke Brian P.
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