Method and arrangement for facsimile picture transmission

Details Method and arrangement for facsimile picture transmission Method and arrangement for facsimile picture transmission

1978-03-07

1980-09-16

Martin, John C.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358264, 371 31, H04N 100, H03K 518

Patent

active

042233569

ABSTRACT:
In facsimile transmission by means of a redundancy reducing coding, for example run-length coding, a distance affects the entire remaining portion of the picture line. End-of-line control characters are therefore transmitted for line synchronization. As these characters are possibly also disturbed and the picture lines to be printed would then completely be lost, a fixed number of different end-of-line control characters are used in cyclic sequence from line to line. This enables the recognition of various successive disturbed picture lines, lost end-of-line control characters as well as end-of-line control characters artificially produced by a disturbance, so that the correct number of picture lines is always printed. Corrected picture lines are printed instead of the picture lines which were received in a disturbed manner, for example by taking over the contents of adjacent picture lines.

REFERENCES:
patent: 3895186 (1978-07-01), Yoshida et al.
patent: 3974326 (1976-08-01), Rosdolsky et al.

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