Method for coding facsimile signal

Details Method for coding facsimile signal Method for coding facsimile signal

1976-11-08

1978-10-17

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

340347DD, 358261, H04N 140

Patent

active

041212584

ABSTRACT:
A method for coding a facsimile signal, in which addresses of information change picture elements each having information different from the immediately preceding picture element on the same scanning line of a facsimile signal are firstly coded for each scanning line to develop a first coded output. In response to the first coded output, the relative distance of each of the information change picture elements to a final reference change point which is selected from information change picture elements on the scanning line including the instant information change picture element to be coded or on at least one immediately preceding scanning line is secondly coded to develop a second coded output. The number of successive information change picture elements having the zero value of the relative distance or the order number of information change picture elements are thirdly coded for each scanning line in response to the second coded output.

REFERENCES:
patent: 3347981 (1967-10-01), Kagan
patent: 3769453 (1973-10-01), Bahl
patent: 3937871 (1976-02-01), Robinson
patent: 3991267 (1976-11-01), Beaudette
patent: 4035837 (1977-07-01), Starck

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