Satellite communication receiving device capable of automatically dealing with frequent change of an assigned channel
US5504934A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1994 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | Jun 28, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a satellite communication receiving device which is for use in a network having a network number and comprises a tuner section (24) for receiving a first communication signal as a received signal from an assigned channel assigned at a time to the network, a first extracting circuit (29) extracts, as extracted common information from the received signal, common information including the network number. A processing circuit (30) processes the extracted common information into a processed signal. When the assigned channel is changed due to a change of a borrowing transponder of a satellite, the processing circuit does not receive the extracted common information from the first extracting circuit and produces a reception impossibility signal. In response to the impossibility signal, a channel selecting circuit (25) causes the tuner section to receive a second communication signal from a specific channel with channel information included in the second communication signal during a contracted time band of the network. The channel information comprises a pair of the network number of the network and a channel number of the assigned channel which is currently assigned to the network. A …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.