Method for rendering gray scale images with variable dot sizes
US4680645A · kind A · utility
102Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1986 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Aug 25, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4057
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The capability of varying sizes of a dot in a printer is fully exploited to provide a gray scale image of superior quality. Errors in gray level are used to modulate the sizes of the dots in producing the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.