Direction scaling method and apparatus for image scanning resolution control
US5047871A · kind A · utility
196Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 1989 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | May 23, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04755
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The density of pixel samples across a document is determined by employing a constant scanner sensing head sampling rate and driving the scanner head movement at a rate directly correlated to the preselected density level. The scanner operator determines the particular density and introduces a signal to motor drive controls to cause it to move across the image at the preselected rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.