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:
Mar. 09, 1993
Filed:
Jun. 22, 1992
Applicant:
Inventors:
Jun Tokumitsu, Kanagawa, JP;
Minoru Yoshii, Tokyo, JP;
Shigeyuki Suda, Kanagawa, JP;
Masayoshi Sekine, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G03B / ; H04N / ; H04N / ;
U.S. Cl.
CPC ...
358 41 ; 358227 ;
Abstract
An in-focus detecting device is arranged to detect the width of a color transition area of an object image from the color components of a video signal and to determine an in-focus state by evaluating the width.