Ghost cancelling system

Details Ghost cancelling system Ghost cancelling system

1981-03-27

1982-11-02

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358905, H04N 521

Patent

active

043576311

ABSTRACT:
A ghost cancelling system is disclosed which includes an input terminal applied with a video signal including a ghost signal component, a ghost cancelling circuit connected to the input terminal, the ghost cancelling circuit including a transversal filter, and an output terminal connected to the ghost cancelling circuit for deriving an output video signal in which the ghost signal component is substantially suppressed. In this case, the transversal filter comprises the combination of a common delay circuit used for a signal delay circuit and for a demultiplexer circuit in time divisional manner, a memory circuit connected to the common delay circuit and activated when the common delay circuit is used for the demultiplexer circuit, and a weighting circuit connected between the memory circuit and the common delay circuit.

REFERENCES:
patent: 3956585 (1976-05-01), Butler et al.
patent: 4044381 (1977-08-01), Shimano et al.

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