Energy-dispersal signal rejection circuit and method
US4953179A · kind A · utility
4Cited by
10References
16Claims
0Family size
Assignee
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Key dates
| Filing date | May 10, 1988 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | May 10, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An energy-dispersal signal rejection circuit adapted for use in a direct-broadcast-from-satellite system rejects an energy-dispersal signal from an input signal which includes a video signal composed with the energy-dispersal signal by generating a cancellation signal synchronized with, and having a phase and amplitude determined in accordance with the energy-dispersal signal, and such cancellation signal is composed with the input signal, for example by adding the two signals, so that the energy-dispersal signal is cancelled from the input signal and the video signal is produced as an output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.