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:
Jan. 22, 2013
Filed:
Feb. 18, 2010
Shinichi Maesato, Tokyo, JP;
Takeshi Iseki, Tokyo, JP;
Shinichi Maesato, Tokyo, JP;
Takeshi Iseki, Tokyo, JP;
Ikegami Tsushinki Co. Ltd., , JP;
Abstract
A specific color detection circuit shows an RGB input pixel and an RGB color signal to be detected in a three-dimensional coordinate, calculates a first distance from an origin to a foot of a perpendicular drawn from the coordinate of the RGB input pixel to a straight line connecting the origin and the coordinate of the RGB color signal or a coordinate with the same RGB ratio as the signal and a second distance from the coordinate of the input pixel to the foot, and detects a hue of a signal of the input pixel. The circuit generates a detection region in a color-difference direction according to the first distance and the hue, calculates a third distance based on the first distance for the detection region and judges the input pixel as being in a predetermined color detection region when the third distance is longer than the second distance.