Ghost cancelling circuit

Details Ghost cancelling circuit Ghost cancelling circuit

1991-07-17

1993-11-30

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358905, H04N 521

Patent

active

052670414

ABSTRACT:
A ghost cancelling circuit is provided with a gain limiting block for limiting recursive coefficients for a ghost cancelling filter to a level less than 0 dB in a frequency domain, so that the gains of the recursive coefficients are limited both in the frequency domain and in the time domain. Accordingly, the ghost cancelling filter will never oscillate.

REFERENCES:
patent: 4502077 (1985-02-01), Morotomi
patent: 4897317 (1990-01-01), Tanaka
patent: 5025317 (1991-06-01), Koguchi

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