Interphone with television
US5815199A · kind A · utility
28Cited by
30References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1996 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Jan 26, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/186
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An interphone with television includes a terminal device having a wide-angle image input camera, an image output circuit, and a master device for receiving an image signal from the image output circuit. The master device converts the image to a digital format and stores the image signal in an image memory. The image may be panned, magnified, and corrected using digital processing techniques. The contents of the image memory are converted to an analogue signal for reproduction on a monitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.