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. 10, 1998
Filed:
Aug. 31, 1995
Applicant:
Inventors:
Juha Koljonen, Needham, MA (US);
John P Petry, III, West Newton, MA (US);
Assignee:
Cognex Corporation, Natick, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382146 ; 382150 ; 382174 ; 382291 ;
Abstract
A method and apparatus for locating and measuring capillary indentation marks on wire bonded leads by creating a normalized, one-dimensional circumferential projection of a candidate center location in an image of a capillary indentation mark and detecting signals in the one-dimensional circumferential projection that correspond to a predefined pattern. The one-dimensional circumferential projection can be generated and evaluated for a full or a sub-sampled set of candidate center locations according to a number of different methods.