Picture signal receiver for facsimile and the like

Details Picture signal receiver for facsimile and the like Picture signal receiver for facsimile and the like

1979-05-01

1981-04-28

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358283, 358298, H04N 140

Patent

active

042649323

ABSTRACT:
A plurality of analog memory devices alternately store successive one-line segments of facsimile signals. During the write-in period of one memory, the signals of one-line segments are stored while the immediately preceding one-line segment is read out of the other memory and processed to make an amplitude comparison for each picture element. The amplitude comparison is translated into a width of an output pulse for each picture element, which width also reflects the time duration of the facsimile recording paper. Thus, a picture is reproduced with a gradation of shade values.

REFERENCES:
patent: 3882270 (1975-05-01), Ogawa
patent: 4071849 (1978-01-01), Koyano
patent: 4081843 (1978-03-01), Okano

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