Film scanner which doubly scans to correct for film speed and position errors
US5604533A · kind A · utility
2Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1995 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | Jun 2, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/253
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a film scanner for optically scanning a film for obtaining a picture signal, which film is moved at a constant speed, an image position correction which is as motion-independent as possible, is ensured in that the film scanner at least doubly scans at least parts of each film image and determines image position errors by comparing the two scanning signals of the same nominal image content, and corrects the picture signal in dependence upon the determined image position error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.