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. 10, 2007
Filed:
May. 22, 2003
Applicants:
Aaron Wallack, Natick, MA (US);
Juha Koljonen, Needham, MA (US);
David Michael, Wayland, MA (US);
Inventors:
Assignee:
Cognex Technology and Investment Corporation, Mt. View, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
Digital image processing methods are applied to an image of a semiconductor interconnection pad to preprocess the image prior to an inspection or registration. An image of a semiconductor pads exhibiting spatial patterns from structure, texture or features are filtered without affecting features in the image not associated with structure or texture. The filtered image is inspected in a probe mark inspection operation.