Method of transmitting pictures and an arrangement for performin

Details Method of transmitting pictures and an arrangement for performin Method of transmitting pictures and an arrangement for performin

1989-07-12

1991-08-13

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358426, H04M 141

Patent

active

050400738

ABSTRACT:
It is known in the transmission of facsimile pictures to transmit the black-white data represented by one binary position per picture element via a run length coding. For the transmission of pictures in which the individual picture elements are represented by binary words having a plurality of binary positions, the individual binary positions of all the binary words are now always subjected picture line-sequentially to a run length coding and are transmitted. When a hierarchic code is used for the representation of P.E. values a compatability with the conventional facsimile receivers is simultaneously provided, which then processes only the most significant binary positions. In addition, measures for the preprocessing of the scanning values are described, so as to obtain a smoothed sequence which can more effectively be transmitted by means of run length coding.

REFERENCES:
patent: 4679094 (1987-02-01), Rutherford et al.

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