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:
Jul. 12, 1988
Filed:
May. 09, 1985
Applicant:
Inventor:
Masanori Uga, Hachioji, JP;
Assignee:
Disco Abrasive Systems, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382-8 ; 382 48 ; 358101 ;
Abstract
An automatic accurate alignment system for positioning an object to be worked which has a certain pattern on its surface at a required position. The system performs primary positioning of the object to be worked on the basis of low magnification pattern matching with respect to at least a part of the image of the object magnified at a relatively low magnification. Thereafter, the system performs secondary positioning of the object to be worked on the basis of high magnification pattern matching with respect to at least a part of the image of the object magnified at a relatively high magnification.