Method and system for detecting defects on a printed circuit board
US6771807B2 · kind B2 · utility
13Cited by
24References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2001 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Dec 12, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30141
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and a system for detecting surface defects on electronic circuits, such as Printed Circuit Boards (PCB), are described herein. The method first comprises identifying contours on a digital image of the PCB. Then anomalies are detected on the PCB image by comparing the identified contours to contours on a vectorial model of the PCB. Each detected anomaly is compared to manufacturing data to verify if it corresponds to a defect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.