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. 20, 1982
Filed:
Feb. 22, 1980
Applicant:
Inventors:
Hisatoyo Kato, Minami-ashigara, JP;
Masamitsu Ishida, Minami-ashigara, JP;
Seiji Matsumoto, Minami-ashigara, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358280 ; 358284 ; 358111 ; 364414 ; 2504 / ; 2503 / ;
Abstract
A method of and apparatus for processing a mammogram in a mammogram copying system in which an original mammogram is scanned with a scanning light beam and the light transmitted through the mammogram is detected by a photodetector which gives an output to be processed and used for recording a visible image on a recording medium. The image gradation of the mammogram is processed. The gradation processing is characterized in that the minimum density of the glandular tissue of the mammogram is lowered down to the level of the fog density to raise the contrast of the mammogram.