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. 22, 1992
Filed:
Jul. 09, 1991
Applicant:
Inventor:
Tetsuo Hoki, Kyoto, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382-8 ; 382 55 ;
Abstract
An objective printed circuit board to be inspected has a printed conductive pattern (550) thereon. The image of the objective printed board is read with an image reader to obtain an image signal. Prior to the image reading of the objective printed board, a reference printed board of the same type as the objective printed board is prepared, and the image thereof is read with the image reader. An edge image of a conductive pattern on the reference printed board is extracted and enlarged to generate an enlarged edge image (SEI). In inspection of the objective printed board, only areas belonging to the enlarged edge image are actually inspected and other areas are not subjected to the inspection.