Electronic copying machine having a line sensor in which the charge storage time is set based on image signals of the previous scan line
US4980776A · kind A · utility
5Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1990 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Apr 2, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0438
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic copying machine has an image line sensor whose charge storage time is controlled individually for each line of the image such that the charge storage time for the next line is determined according to the average detected brightness of the line immediately preceding that next line, based on the image signals thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.