Method for calibrating computer monitors used in the printing an

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345904, 348180, 348181, 348189, 348191, 358518, 358519, 356416, G01K 1900

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055746640

ABSTRACT:
An apparatus for calibrating color settings of a computer monitor to cause a proofed image, i.e., a prepress image, to essentially match a printed image on a particular medium, allowing the aesthetic quality of the image to be adjusted prior to printing, thus saving time and money. Embodiments of the present invention comprise a first set of separate red, green and blue monitor sensors (RGB) coupled to the computer monitor to sense a reference image and a second set of RGB ambient sensors facing upwards to sense ambient illumination. A set of RGB digital displays indicate numerical values representative of the computer monitor illumination as read by the monitor sensors and adjusted by the ambient sensors. A predefined table is used to reference the indicated values for particular medium and these values are used to adjust gamma values on the red green and blue color guns of the computer monitor.

REFERENCES:
patent: 4340905 (1982-07-01), Balding
patent: 5157506 (1992-11-01), Hannah
patent: 5293258 (1994-03-01), Dattilo
patent: 5325195 (1994-06-01), Ellis et al.
patent: 5459678 (1995-10-01), Feasey
Darcy, "Monitor Calibrators: a piece of color-management puzzle" MacWeek Oct. 26, 1992 V6 No. 38 p. 32(2).

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