Ghost reduction circuit for television receiver

Details Ghost reduction circuit for television receiver Ghost reduction circuit for television receiver

1982-08-09

1984-10-09

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358905, 333 18, 455307, 455306, 375 14, H04N 521, H04B 304

Patent

active

044764910

ABSTRACT:
A wide-band ghost reduction circuit apparatus for a television receiver comprises a ghost detector, two transversal filters having delay characteristics different from each other, a switch for selecting one of the filters and an automatic gain control circuit responsive to the output of the ghost detector for controlling the filters and the switch. Each of the transversal filters includes tap amplifiers whose gains are controlled by the automatic gain control circuit and having outputs connected, respectively, to tap inputs of delay devices formed of such as a CCD each provided with a tap and included in the associated transversal filter. Output end of one of the transversal filters having a smaller delay is connected to a selected one of the input tap of the other transversal filter through a switch so that input video signal components join together at every input terminal or every individual tap position of the delay devices.

REFERENCES:
patent: 4127874 (1978-11-01), Iwasawa et al.
patent: 4233683 (1980-11-01), McRae
patent: 4264884 (1981-04-01), Auzet et al.
patent: 4404600 (1983-09-01), Murakami

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