Picture image discriminating apparatus

Details Picture image discriminating apparatus Picture image discriminating apparatus

1982-12-21

1985-12-03

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358280, 358283, 382 50, H04N 140

Patent

active

045569169

ABSTRACT:
A picture image discriminating apparatus which operates for scanning a document and transmitting a picture signal obtained through converting a light signal photoelectrically at every unit reading size of 0.01 mm.sup.2 or over to a signal processing division for picture image discrimination by a peak interval of a time series output of the picture signal. The picture image discriminating apparatus has a differentiating circuit to differentiate a time series output of the picture signal obtainable according to the light signal, a binary-coding circuit to compare an output signal from the differentiating circuit with a specific level and output a binary pulse signal, and a counter to count an output pulse from the binary-coding circuit.

REFERENCES:
patent: 4208677 (1980-06-01), Schayer et al.
patent: 4414581 (1983-11-01), Kato et al.

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