Picture signal discriminating circuit

Details Picture signal discriminating circuit Picture signal discriminating circuit

1984-06-21

1986-12-02

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358280, 358284, 382 53, H04N 140

Patent

active

046269223

ABSTRACT:
A picture signal discriminating circuit, having a comparator to binary-encode an analog picture signal obtained by raster-scanning an original signal, changes the threshold level for the comparator according to the signal conditions of previously binary-encoded picture signals.

REFERENCES:
patent: 3159815 (1964-12-01), Groce
patent: 4234867 (1980-11-01), Butin
patent: 4247873 (1981-01-01), Decuyper
patent: 4329717 (1982-05-01), Logie et al.
patent: 4473847 (1984-09-01), Kurata
patent: 4525747 (1985-06-01), Sakai et al.
patent: 4528591 (1985-07-01), Liepe et al.

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