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

1991-05-10

1992-06-09

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358139, 358167, 358905, 375 13, 375 19, 455 65, 455 671, H04N 708

Patent

active

051212110

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: 4864403 (1989-09-01), Chao
patent: 4912557 (1990-03-01), Faroudja
patent: 4953026 (1990-08-01), Kobayashi
patent: 4980767 (1990-12-01), Chao
patent: 5047859 (1991-09-01), Koo

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