TVRD receiver system with automatic bandwidth adjustment
US4792993A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1985 |
| Grant date | Dec 20, 1988 |
| Priority date | — |
| Expiry date | Oct 30, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J1/16
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An improved TVRO receiver for receiving signals broadcast over a plurality of channels with varying bandwidths and having a tuner producing output signals corresponding to the received signals and having bandwidths which vary from channel to channel is provided with a band pass filtering arrangement receiving the output signals and having a controllably adjustable pass band, a bandwidth detection circuit for receiving the output signals passing through the filtering arrangement and being responsive to a current output signal corresponding to the channel being received for producing a control signal indicative of the extent of deviation of the bandwidth of the current output signal beyond the current pass band of the filtering arrangement, and a control circuit responsive to the control signal for adjusting the pass band of the filtering arrangement to accommodate the bandwidth of the current output signal corresponding to the channel being received, if the bandwidth deviation of the current output signal exceeds a predetermined threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.