System for echo cancellation comprising an improved ghost cancellation reference signal
US5568202A · kind A · utility
14Cited by
9References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1992 |
| Grant date | Oct 22, 1996 |
| Priority date | — |
| Expiry date | Sep 22, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for improved echo cancellation for use in particular in television receivers. The system features a superior ghost cancellation reference signal which exhibits improved performance in noisy environments and which exhibits the flat and wide bandwidth necessary for effective channel characterization while exhibiting a higher and more evenly distributed amplitude versus time characteristic than that provided by known, non-cyclic ghost cancellation signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.