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:
Sep. 17, 1991
Filed:
Jan. 04, 1990
Applicant:
Inventor:
Kiyoshi Tsuji, Musashino, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
A61B / ; H04N / ;
U.S. Cl.
CPC ...
358 98 ; 358168 ;
Abstract
A method and circuit reduces the influence of a bright image area in an endoscope image signal. From the endoscope image signal, a signal component of the bright image area of a level difference from the periphery above a predetermined value and a spatial size below a predetermined value are extracted. The part, corresponding to the bright image area in the image signal or a signal based on the image signal, is depressed using the signal component of the bright image area.