Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1994-01-06
1995-07-11
Groody, James J.
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
348914, H04N 521, H04N 5213
Patent
active
054325625
ABSTRACT:
In a television signal receiver, including an intermediate frequency (IF) filter (3) having an intermediate frequency filter group delay, and an intermediate frequency (IF) demodulator (5) coupled to the intermediate frequency filter (3), a correction filter arrangement (9, 13, 15) is coupled to the intermediate frequency demodulator (5) and has a programmable group delay for cancelling a group delay precorrection carried out at a transmitter and the intermediate frequency filter group delay.
REFERENCES:
patent: 4434440 (1984-02-01), Schiff
patent: 4490693 (1984-12-01), Behrend
patent: 4538180 (1985-08-01), Cluniat
patent: 4658296 (1987-04-01), Beech
patent: 4984079 (1991-01-01), Ho et al.
patent: 5198904 (1993-03-01), Ta et al.
patent: 5323236 (1994-06-01), Tichelaar et al.
Tichelaar Johannes I. J.
Van de Waterlaat Adrianus C. J. G.
Venis Wouter
Goodman Edward W.
Groody James J.
Lee Michael H.
U.S. Philips Corporation
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