Video picture generator photodetector
US4363034A · kind A · utility
14Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1980 |
| Grant date | Dec 7, 1982 |
| Priority date | — |
| Expiry date | Dec 31, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/73
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Camera having means for the automatic regulation of the sensitivity of a charge transfer detector functioning by vertical frame transfer. These means comprise a loop for controlling the video signal by varying the integration time of electrons in the image area of the CTD sensor, as well as an optical attenuating device for chopping said area during each period of transferring the collected charges into the store. The attenuator has at least one fixed disk and one movable disk controlled in rotation, the disks carrying optical densities or being made of polarizers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.