Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Reexamination Certificate
2006-05-02
2006-05-02
Natnael, Paulos M. (Department: 2614)
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
Reexamination Certificate
active
07038732
ABSTRACT:
A DTV signal has a plural-data-segment frame header including complementary first and second ghost-cancellation reference signals differentially delayed by the duration of two NTSC horizontal scan lines. A receiver for such DTV signal has an adaptive equalizer for baseband symbol code with kernel weights calculated by a computer operative on the equalizer response after comb filtering. The comb filter combines the equalizer response as differentially delayed by the duration of two NTSC horizontal scan lines to cancel artifacts of co-channel NTSC interference in the comb filtered equalizer response supplied to the computer. This reduces the undesirable influence of such artifacts on equalization to reduce intersymbol interference.
REFERENCES:
patent: 4864403 (1989-09-01), Chao et al.
patent: 5196936 (1993-03-01), Kobayashi et al.
patent: 5600380 (1997-02-01), Patel et al.
patent: 5619269 (1997-04-01), Lee et al.
patent: 5623318 (1997-04-01), Lee
patent: 5623319 (1997-04-01), Hill et al.
patent: 5796441 (1998-08-01), Oshita
patent: 6011814 (2000-01-01), Martinez et al.
patent: 6057877 (2000-05-01), Limberg
patent: 6184938 (2001-02-01), Patel et al.
patent: 6300984 (2001-10-01), Limberg et al.
patent: 6380984 (2002-04-01), Inoue et al.
patent: 6816204 (2004-11-01), Limberg
Limberg Allen L.
Patel Chandrakant B.
Howrey LLP
Natnael Paulos M.
Samsung Electronics Company, Ltd.
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