Apparatus and technique for generating a screen reproduction of

Details Apparatus and technique for generating a screen reproduction of Apparatus and technique for generating a screen reproduction of

1996-11-19

1997-12-16

Rogers, Scott A.

Facsimile and static presentation processing

Natural color facsimile

Specific image-processing circuitry

358456, 358459, 358298, 347253, H04N 1405

Patent

active

056991746

ABSTRACT:
A technique for screening an image for half-tone reproduction by image reproduction apparatus including a marking device which is operative to mark a medium along a multiplicity of parallel marking lines including the steps of providing a digital representation of density values of an original image, storing dot shape information representative of a screen function in a line-by-line, input density-by-input density arrangement and extracting the dot shape information from storage for the density values in the form of information that designates on and off points for each marking line. Apparatus for carrying out the technique is also disclosed.

REFERENCES:
patent: 3806641 (1974-04-01), Crooks
patent: 4595956 (1986-06-01), Kawamura et al.
patent: 4806946 (1989-02-01), Ohnishi
patent: 4916545 (1990-04-01), Granger
patent: 4985779 (1991-01-01), Gall
patent: 4989096 (1991-01-01), Webb et al.
patent: 5233441 (1993-08-01), Hamilton

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