Method and apparatus for reducing co-channel interference in an

Details Method and apparatus for reducing co-channel interference in an Method and apparatus for reducing co-channel interference in an

1990-10-19

1992-06-09

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 36, 358167, 358 11, H04N 964, H04N 514, H04N 5213, H04N 1120

Patent

active

051212080

ABSTRACT:
NTSC co-channel interference is reduced in an HDTV receiver by developing an interference signal that is representative of the high energy components in the NTSC signal and subtracting the interference signal from the received HDTV signal to produce an enhanced HDTV signal for processing.

REFERENCES:
patent: 4794447 (1988-12-01), Tsinberg
patent: 4837611 (1989-06-01), Faroudja
patent: 4870489 (1989-09-01), Ducret
patent: 4888641 (1989-12-01), Isnardi et al.
patent: 4907069 (1990-03-01), Bret
patent: 4916525 (1990-04-01), Drummond
patent: 4918515 (1990-04-01), Faroudja
J. S. Lothian, "A Comb Filter Suppression of Co-Channel Interference on Television Signals", Jul. 14, 1978.

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