Video communication apparatus capable of electronically adjusting the field of view of a video frame
US4996592A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 10, 1989 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Aug 10, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/262
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video communication apparatus for encoding a video signal representative of a scene being picked up by a video camera and transmitting the encoded signal. The apparatus generates, in response to a synchronizing signal synchronous to the video signal, signals representative of a predetermined pick-up area to be encoded which is smaller than the entire pick-up area being picked up by the video camera, and a signal representative of a position of the predetermined pick-up area in the entire pick-up area. These signals mark the predetermined pick-up area with the entire pick-up area. A memory stores video data associated with either one of the entire pick-up area and the predetermined pick-up area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.