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:
Dec. 12, 1989
Filed:
Mar. 16, 1988
Kazuhiro Chiba, Nagaokakyo, JP;
Noriko Bamba, Nagaokakyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A color converting device for converting R, G and B image signals representing red, green and blue colors, respectively, into a three color or four color printing data indicative of three colors of yellow, magenta and cyan or four colors of yellow, magenta, cyan and black, which device comprises a divider for dividing the image signals into achromatic and chromatic color components for each picture element; a first converter for converting the chromatic color components so divided into a first color conversion data Y1, N1 and C1 representative of the yellow, magenta and cyan colors, respectively; a second converter for converting the achromatic color component into a second color conversion data Y2, M2 and C2, or into a third color conversion data K; an adder for summing the first and second color conversion data Y1, M1, C1, Y2, M2 and C2 together to provide the three color printing data, or an output circuit for outputting both the first color conversion data Y1, M1 and C1 and a third color conversion data K as the four color printing data.