Method of illuminating a digital representation of an image
US6091834A · kind A · utility
3Cited by
11References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1998 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Nov 27, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/38
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An illumination unit for positioning adjacent a record medium support surface of an analyze scanner on which a record medium to be scanned is positioned in use. The unit comprises a housing with a slot extending at least partially along its length. At least one radiation source is supported within the housing, whereby a beam of radiation passes through the slot. A radiation absorbing surface is provided offset from the radiation source so as to form a background when viewing the slot through the medium support surface in a direction offset to the beam direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.