Browse Prior Art Database

MACHINE VISION INSPECTION ALGORITHM OF SEVEN SEGMENT LCD'S

IP.com Disclosure Number: IPCOM000006341D
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2001-Dec-26
Document File: 4 page(s) / 224K

Publishing Venue

Motorola

Related People

Authors:
David Karpinia John Christopher Lewis

Abstract

As the complexity of pager LCD's increases, the accuracy, reliability and repeatability of human inspec- tion becomes questionable. In order to meet the corpo- rate goal of six sigma, machine inspection is providing part of the solution. LCD inspection is being accom- plished with a machine vision system utilizing a Macintosh IIfx computer with Data Translation frame grabber Board and a Pulnix TM 745 CCD camera. The system delivers a resolution of 640 x 480 pixels with 256 gray levels. The programming was done in Rail, a language developed by Automatix Inc. Biller&, Mass. Rail is a high level interpretive language similar to PASCAL with its own vision processing fonctions.