Satellite telecommunications facility capable of covering a plurality of coverage areas
US5410731A · kind A · utility
22Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1994 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Feb 28, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A direct television broadcasting satellite facility (S1, S2, S3) having at least two coverage areas (T1, T2). At the beginning of the life of the facility, with present Standards, only two satellites (S1, S2) each having two beams (F1 & F2 and F'1 & F'2) are used, each satellite having 12 channel and redundancy amplifiers for five channels. When high-definition television is subsequently introduced progressively, the amplifiers will be coupled together in parallel and in pairs, and at least one additional satellite (S3), identical to the two initial satellites, will be launched when required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.