Method to image transparent media utilizing integrated scanning
US5068739A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 1989 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Feb 10, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0404
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electro-optical technique for the efficient scanning of many different forms of transparent media. The method utilizes synchronous closed loop scanning (integrated scanning). The subject is illuminated with a predetermined light source level. The source is directed by a scanner to the transparent media. The illumination is then electro-optically processed and immediately fed back through the same scanner to the subject media. The resulting feedback creates an image signal that actively illuminates the media, providing only as much light as is required to detect the image. The signal thus created can be used to create a very high resolution reproduction of the subject image. The image can be reproduced immediately for viewing and transmission or stored as a video record. In addition, the image can be manipulated or integrated with other images for analysis, measurement, or presentation purposes. Embodiments of the present invention include film negative and fiche scanners, microscopes, transparency scanners, and computer accessories.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.