Television camera
US4463384A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1983 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Feb 18, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/671
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A television camera having a photo-taking lens, an image pick-up device to take an image of a photographic object formed on its image pick-up surface by the photo-taking lens, a synchronous signal generator to control operations of the pick-up device, and an electronic view finder which displays the photographic object image based on an image pick-up signal obtained by the pick-up device. In this type of camera, there are further provided a detecting device to detect a focussed state of the photographic object image formed on the above-mentioned image pick-up surface, and a pattern generator to generate a pattern signal corresponding to the detected state. On the basis of the synchronous signal from the above-mentioned synchronous signal generator, an output from the pattern generator can be displayed at a predetermined position on the image surface of the above-mentioned electronic view finder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.