Image reader capable of setting density and illumination
US5523861A · kind A · utility
14Cited by
15References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 1992 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | May 13, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/407
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reader sets the level of illumination provided by a light source and the gamma correction provided by a density correction circuit in dependence upon a user selected density setting button on a control panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.