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. 26, 1995
Filed:
Aug. 13, 1993
Takehiko Saito, Tokyo, JP;
Seiko Instruments Inc., , JP;
Abstract
A color correction system and method for correcting three kinds of color gradation input data, each having an m bit length, to produce three kinds of corrected color gradation data, each having an m bits length, by a combination of looking-up in a look-up table to find the closest color gradation corrected data and carrying out an interpolation to obtain improved color reproducibility. The system includes a first memory for storing previously calculated color gradation corrected data defined by a combination of upper n bits color gradation data (m>n); a second memory for storing previously obtained coordinate correction data defined by a combination of lower (m-n) bits color gradation data, and outputting first to third coordinate correction data; an adding unit for adding the upper n bits data of the first to third color gradation input data and the first to third coordinate correction data and outputting same to the first memory as a memory address thereof, to cause an output of the stored color gradation corrected data defined by the memory address; and an average calculating unit receiving the color gradation corrected data from the first memory and calculating averages of the three kinds of color gradation corrected data.