Adaptive ghost cancellation circuit

Details Adaptive ghost cancellation circuit Adaptive ghost cancellation circuit

1989-10-06

1991-08-27

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358905, H04N 521

Patent

active

050438140

ABSTRACT:
An adaptive ghost cancellation circuit comprises a transversal filter having a reduced set of multipliers. A predetermined reference signal in the transmitted video signal, and an identical reference signal generated in the ghost cancellation circuit are used to identify optimum active multiplier positions and values during the vertical retrace interval. The optimum filter is then used to cancel any ghosts from the receiver video signal.

REFERENCES:
patent: 4344089 (1982-08-01), Utsunomiya
patent: 4476491 (1984-10-01), Murata
patent: 4502077 (1985-02-01), Morotomi
patent: 4682230 (1987-07-01), Perlman

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