Real time data compression/decompression scheme for facsimile tr

Details Real time data compression/decompression scheme for facsimile tr Real time data compression/decompression scheme for facsimile tr

1980-05-13

1982-11-23

Britton, Howard

Facsimile and static presentation processing

Facsimile

Recording apparatus

340347DD, H04N 140, H04N 712

Patent

active

043608400

ABSTRACT:
A graphic image represented by a two-level pel-to-pel definition is compressed by one-dimensional redundancy reduction coding using an entropy preserving algorithm which allows for real time reduction of the pel-to-pel data without any loss in image resolution. The compressed data is concatenated for transmission and then separated and decoded back to a pel-to-pel format for defining a facsimile image.

REFERENCES:
patent: 3560639 (1971-02-01), Centanni
patent: 3849592 (1974-11-01), Rosenheck
patent: 4121259 (1978-10-01), Preus
patent: 4136363 (1979-01-01), Saran
patent: 4156880 (1979-05-01), Yamada
patent: 4207599 (1980-06-01), Murayama

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