System for echo cancellation comprising an improved ghost cancellation reference signal
US5179444A · kind A · utility
13Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 5, 1992 |
| Grant date | Jan 12, 1993 |
| Priority date | — |
| Expiry date | Feb 5, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A television receiver comprising a system for improved echo cancellation. 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 whiel 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.