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:
Jul. 18, 2000
Filed:
Apr. 16, 1997
Applicant:
Inventors:
Seiichi Matsui, Asaka, JP;
Atsuhiko Ishihara, Asaka, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348 96 ; 348 97 ; 358518 ;
Abstract
Shading data are captured in a state where there is no developed film between a light source and a line sensor. During calibration, a negative base area on the film is positioned between the light source and the line sensor, and signal levels of colors of color signal data corresponding to three primary colors transmitted through the negative base area are controlled to be substantially equal. While the film is transported, the color signal data indicating a frame image are obtained in the calibrated state, and shading correction is performed for the color signal data according to the obtained shading data.