System for receiving TV signals retransmitted by satellites
US5276904A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 4, 1991 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Feb 4, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B21/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system intended for the simultaneous reception of several TV channels retransmitted by satellites. This system comprises a multi-frequency microwave frequency head, installed in an external unit, whose inputs are connected to the satellite antennas. Wide band demodulation is made possible by a microwave frequency source controlled by a synthesizer. Digital signals transmitted by a link cable ensure programming of the synthesizer and therefore of the selected TV channels. A remodulation in amplitude modulation is performed for supplying signals in the 40-860 MHz band, carried by an existing link cable for terrestrial antennas. The system finds particular application to the simultaneous reception of several TV channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.