Co-channel interference filter for television receiver

Details Co-channel interference filter for television receiver Co-channel interference filter for television receiver

1991-10-29

1992-11-10

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 31, 358 86, 375101, 455307, H04N 521

Patent

active

051629003

ABSTRACT:
A television signal receiver includes a comb filter having a plurality of spaced nulls for reducing undesired co-channel interference. The depth of the nulls is established in response to a control signal representing the strength of the undesired co-channel interference to provide an optimized tradeoff between interference attenuation and signal-to-noise degradation. The control signal is preferably generated in response to a received reference signal such as a pseudo random channel equalization code. The output of the comb filter is characterized by an intersymbol interference component which is canceled is an intersymbol interference filter which is also responsive to the control signal.

REFERENCES:
patent: 3742131 (1973-06-01), Rogeness
patent: 4032847 (1977-06-01), Unkauf
patent: 4216496 (1980-08-01), Lothian et al.
patent: 4343019 (1982-08-01), Lagoni
patent: 5067137 (1991-11-01), Kaneko

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