Browse Prior Art Database

Automated Card Inspection

IP.com Disclosure Number: IPCOM000040246D
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02

Publishing Venue

IBM

Related People

Authors:
Kishi, GT McIntosh, MP [+details]

Abstract

An optical inspection system for identifying defective pins or leads as inserted through holes in cards and before soldering. The system identifies from a database the presence and type of lead for each hole in the card, and, accordingly, categorizes each hole of the card. The category selected determines a hierarchical set of routines for checking the optical image of the hole. Categorizing leads by component type allows different kinds of routines to be used to verify the presence of each type of lead. This means that each set of routines used to verify each type of lead can take maximum advantage of any preknowledge about the expected image from that type of lead. As an example, seven different categories may be used.