System for echo cancellation comprising an improved ghost cancel

Details System for echo cancellation comprising an improved ghost cancel System for echo cancellation comprising an improved ghost cancel

1992-09-22

1996-10-22

Britton, Howard W.

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

348192, 348614, 375231, 375350, 455 65, 455 671, 455 674, H04N 708

Patent

active

055682022

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.

REFERENCES:
patent: 4476491 (1984-10-01), Murata
patent: 4864403 (1989-09-01), Chao
patent: 4915557 (1990-03-01), Faroudja
patent: 4953026 (1990-08-01), Kobayashi
patent: 4980767 (1990-12-01), Chao
patent: 5047859 (1991-09-01), Koo
patent: 5111298 (1992-05-01), Koo
patent: 5121211 (1992-06-01), Koo
patent: 5179444 (1993-01-01), Koo

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