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. 14, 1993
Filed:
Jan. 21, 1992
Applicant:
Inventor:
Hajime Yoshida, Tokyo, JP;
Assignee:
Hajime Industries Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358106 ; 358101 ;
Abstract
An image of a light irradiated object is picked up by a video camera. Detection of defects on the object is conducted from the image signal from the video camera. Two inspection zones adjacent each other are established on the picture screen, each having a preset size. The brightness of each of the respective two inspection zones is sensed and accumulated as the inspection zones are indexed across the screen. When the difference between the accumulated values of the respective inspection zones exceeds a preset threshold value a defect is defined.