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:
Jun. 02, 1998
Filed:
Apr. 30, 1996
Applicant:
Inventor:
Hisashi Enomoto, Saitama, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; H04N / ; H04N / ; H04N / ;
U.S. Cl.
CPC ...
395109 ; 358428 ; 358429 ; 358443 ; 358448 ; 358479 ; 348220 ; 348395 ; 348402 ; 348405 ;
Abstract
A direct color thermal printer is used with color thermosensitive recording sheet (23), and prints a pixel (i, j) to it in accordance with 8-bit digital data g(i, j), namely brightness data (Y) and chrominance data (R-Y, B-Y). The digital data is compensated by use of a second-order differential operator. An integer 128 is added to the digital data g'(i, j) being compensated. A sum of 128 and the compensated digital data is limited to a range of nine bits, so as to heighten halftone of the pixel to be printed.