Method for producing a compressed digital representation of a vi

Details Method for producing a compressed digital representation of a vi Method for producing a compressed digital representation of a vi

1975-10-23

1976-11-09

Griffin, Robert L.

Telegraphy

Systems

Simplex-reversing periodic

178DIG3, H04H 712

Patent

active

039912671

ABSTRACT:
Lines on an image are optically scanned in sequence for image density at spaced intervals. Binary line scan functions are produced to represent the densities of the samples. These functions are translated into equivalent binary line codes of substantially reduced redundancy and length. Translation is accomplished by generating codes defining the variations of each line scan function from that of the previous line.

REFERENCES:
patent: 3378641 (1968-04-01), Varsus et al.
patent: 3686631 (1972-08-01), Elliott

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