System and method for making changes to printed wiring boards
US4571072A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1983 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Sep 30, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/056
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computer aided design (CAD) system is operative to generate an output containing only the additions and deletions to an existing master artwork. The CAD output is in turn applied to photoplotter equipment which produces a "delete" artwork containing line representations of only the etch/wires to be deleted from the original master artwork and an "add" artwork containing line representations of ony the etch/wires to be added to the same original master artwork. These two artworks are photographically combined with the original master artwork in a predetermined manner to produce a new PWB artwork which incorporates the added and deleted wire changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.