Slide scanner
US4907280A · kind A · utility
5Cited by
6References
28Claims
0Family size
Inventors
Key dates
| Filing date | Jul 22, 1987 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Jul 22, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0406
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color slide transparency scanner projects an intense stripe of light through a color slide. Red, green, and blue filters successively filter the stripe of image from the slide. In some applications, a neutral density filter adds still more information from dark areas of the slide image. A carriage carrying the slide moves across the light. A CCD array detects the filtered images and converts them to analog electrical signals. Circuitry converts the analog signals to digital.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.