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. 22, 2005
Filed:
Nov. 20, 1998
Manish Kulkarni, Sunnyvale, CA (US);
Manish Kulkarni, Sunnyvale, CA (US);
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for deriving a reverse model look-up table whose entries represent device dependent colors as a function of device independent colors, based on a forward model look-up table whose entries represent device independent colors obtained in response to printout of corresponding device dependent colors. For each device independent target color, a binary search of the forward model look-up table is performed so as to locate a cell that contains the device independent target color. The grid points from the forward model look-up table that define the cell are interpolated so as to obtain device dependent colors corresponding to the device independent target color. The device dependent color is stored at the grid point for the reverse model look-up table at a position corresponding to the device independent target color.