Method for adjusting quality of a pantograph background pattern
US8817330B2 · kind B2 · utility
4Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2010 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Dec 3, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/00867
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Pantograph background and foreground pairs that perform well in one printer may not perform as well in another. The main problem that occurs is the message is easily seen on the original print. By adjusting the background pattern quality, the pantograph is adjusted for optimal performance for a particular printer. The background pattern is adjusted by first adjusting the pixel density in the background pattern and second, by adding the adjusted cluster background pixel pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.