Film scanner
US4031550A · kind A · utility
1Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1976 |
| Grant date | Jun 21, 1977 |
| Priority date | — |
| Expiry date | Feb 25, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N3/38
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
For reproduction on a television receiver, movie film is moved continuously past a scanning region. Each image is scanned three times in direction opposite to film motion, the starting point of each scan being displaced one-third of image height in direction of motion of film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.