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. 21, 2000
Filed:
Aug. 28, 1997
Applicant:
Inventor:
Hideo Nishikawa, Kyoto, JP;
Assignee:
Nidec Read Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348 92 ; 348 95 ; 348 94 ; 348 86 ; 348 87 ;
Abstract
A printed circuit board inspection apparatus having upper and lower jigs with the former moveable horizontally and the latter movable vertically and with a camera mounted on the former. Reference holes are provided on the upper jig and on a positioning plate mounted on the lower jig and, in accordance with the method of the invention, photographs are taken of the reference marks simultaneously with the positioning plate engaging the upper jig. Reference mark alignment is calculated from the photographs and the upper jig is moved horizontally to correct misalignment.