Color conversion definition method, profile production...

Facsimile and static presentation processing – Natural color facsimile – Color correction

Reexamination Certificate

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C358S001900, C382S167000

Reexamination Certificate

active

07633658

ABSTRACT:
In a color conversion definition process, first, a profile of a virtual device having a color reproduction range that well simulates a color reproduction range of a printing system is produced. A first color conversion is then defined so as to convert a coordinate point in a color reproduction range of a printer expressed in a first RGB color space to a coordinate point in the color reproduction range of the virtual device expressed in a second RGB color space dependent on the virtual device. A second color conversion is then defined so as to convert a coordinate point in the color reproduction range of the virtual device expressed in the second RGB color space to a coordinate point in the color reproduction range of the printing system expressed in the CMYK color space. The resultant coordinate point represents a color very similar to a color represented by the printing system.

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patent: 2003/0189716 (2003-10-01), Tsuji et al.
patent: 9-83824 (1997-03-01), None
patent: 2001-103329 (2001-04-01), None
patent: 2004-7373 (2004-01-01), None
patent: 2004-102489 (2004-04-01), None
patent: 2005-268982 (2005-09-01), None

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