Infrared scanning of sprocket holes
US7929015B2 · kind B2 · utility
0Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1998 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Jun 10, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
To be able to scan the sprocket holes of a film with improved precision by means of a film scanner, in which a correction signal is generated for compensating picture steadiness errors, it is proposed that the light source generates light in the infrared range, and that the scanning sensor(s) is (are) sensitive in the infrared range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.