The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 27, 2007
Filed:
Nov. 22, 2002
Naoki Hagai, Komaki, JP;
Masashi Kuno, Ohbu, JP;
Masaki Kondo, Toyoake, JP;
Masashi Ueda, Nagoya, JP;
Masahiro Nishihara, Nagoya, JP;
Naoki Hagai, Komaki, JP;
Masashi Kuno, Ohbu, JP;
Masaki Kondo, Toyoake, JP;
Masashi Ueda, Nagoya, JP;
Masahiro Nishihara, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
After determining a CMYK-to-Lab relationship, a Lab lattice-to-CMYK relationship is determined. The Lab lattice-to-CMYK relationship defines, for each Lab lattice point, a plurality of allowable CMYK data sets. Then, for each Lab lattice point, several allowable CMYK data sets with the largest K value are first selected among the plurality of CMYK data sets. Then, one CMYK data set with the smallest color distance from the subject Lab lattice point is selected among the several allowable CMYK data sets. If the subject Lab lattice point falls within the color reproducible range for the value of K of the selected CMYK data set, the selected CMYK data set is finally determined for the subject Lab lattice point. It is possible to create a lookup table, in which each Lab lattice point falls within the color range of the K value in the corresponding CMYK data set.