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:
Nov. 15, 1983
Filed:
Sep. 14, 1981
Yuzo Kato, Yokohama, JP;
Nobuyoshi Tanaka, Yokohama, JP;
Naoto Kawamura, Inagi, JP;
Hisashi Nakatsui, Kawasaki, JP;
Shunichi Ishihara, Kodaira, JP;
Yasushi Sato, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image signal processing unit is disclosed which comprises: a contour extraction processing circuit for extracting a contour part from an input image signal, a color signal conversion processing circuit for replacing color signals of the contour part with contour emphasizing color signals on the basis of an output signal from said contour extraction processing circuit, and an image conversion processing circuit for producing a contour emphasized image signal from the input image signal and an output signal from said color signal conversion processing circuit. The image signals input to the image signal processing unit are converted to image signals suitable for display or printing.