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:
May. 09, 2006
Filed:
Sep. 26, 2002
Mitsuru Higuchi, Saitama, JP;
Keiichi Negishi, Yokohama, JP;
Daisuke Ayame, Saitama, JP;
Kazunori Abe, Saitama, JP;
Shinji Takeuchi, Saitama, JP;
Mitsuru Higuchi, Saitama, JP;
Keiichi Negishi, Yokohama, JP;
Daisuke Ayame, Saitama, JP;
Kazunori Abe, Saitama, JP;
Shinji Takeuchi, Saitama, JP;
Fujinon Corporation, Saitama, JP;
Abstract
In an electronic endoscope of the present invention, an edge detection circuit detects a down edge section and an up edge section of both ends of a blood vessel in a width direction based on a G signal output from an RGB color conversion circuit, an R coefficient selector and a B coefficient selector select, for example, a coefficient smaller than 1 for the detected down edge section and select, for example, a coefficient larger than 1 for the up edge section, and a multiplier multiplies an R signal and a B signal by these coefficients. As a result, both ends of the blood vessel are highlighted with a left end part expressed blackish and a right end part expressed reddish, making it possible to clearly display blood vessels in mucous membranes on a monitor. It is also possible to detect phases on a coordinate system where an R-Y signal is set on a vertical axis and a B-Y signal is set on a horizontal axis, compare these phases with reference phase θof blood vessel colors and extract signals of blood vessel colors.