Imaging apparatus
US4524390A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1983 |
| Grant date | Jun 18, 1985 |
| Priority date | — |
| Expiry date | Mar 7, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/68
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosed apparatus provides for an image to be "beam-split" between (typically) two similar--but defective--imagers. While the two imagers in question are similar in all respects, the locations of their respective defective pixels are not. Respective programmable read-only-memories (PROMS) cooperate with each of the imagers and serve to memorize the locations of the defective pixels of the imagers. If the two imagers are scanned simultaneously, then, by toggling between the imagers each time a defective pixel is read in either of the imagers, a perfect video signal (regardless of whether the imagers have isolated defective pixels, or whether such defective pixels are aligned along given rows or columns of the imagers) may be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.