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:
Apr. 29, 2003
Filed:
Jun. 30, 1999
Masahiro Nagatani, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Due to high resolution of color printers and the increased number of colors in image formation from four colors (Y, M, C and K) to six or seven colors including pale colors, the number of times of referring to LUT data and the number of times of calculation are increasing in interpolation operation for generating print data. In view of this, when inputted R, G and B data are converted to Y, M, C and K data by performing interpolation operation using a conversion table which expresses the input-output relations, if output values corresponding to eight vertices of a unit cube used for interpolation are the same value, the calculation is not performed but the value is outputted as the interpolation result.