Ghost cancelling apparatus having transversal filter for generat

Details Ghost cancelling apparatus having transversal filter for generat Ghost cancelling apparatus having transversal filter for generat

1992-12-11

1994-03-08

Groody, James J.

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

H04N 521

Patent

active

052932346

ABSTRACT:
A ghost cancelling apparatus and method for quickly and sufficiently cancelling a ghost in a video signal, particularly a spread ghost, include performing a cross-correlation operation between the output video signal and a ghost cancelling reference signal, and correcting a filter coefficient based on the cross-correlation operation result when a remaining ghost is not less than a predetermined value, while when the remaining ghost is less than a certain value, the filter coefficient is corrected according to a least mean square method.

REFERENCES:
patent: 4896213 (1990-01-01), Kobo
patent: 4947252 (1990-08-01), Kobayashi
patent: 5025317 (1991-06-01), Koguchi
patent: 5045945 (1991-09-01), Herman
patent: 5130799 (1992-07-01), Iga
patent: 5184221 (1993-02-01), Nishi
patent: 5196936 (1993-03-01), Kobayashi
patent: 5216507 (1993-06-01), Ito
patent: 5237415 (1993-08-01), Koguchi

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