Apparatus for generating halftone dots from dot envelope paramet

Details Apparatus for generating halftone dots from dot envelope paramet Apparatus for generating halftone dots from dot envelope paramet

1992-03-20

1993-08-24

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358460, 358498, 395110, H04N 1387, G06F 312, G06F 1562

Patent

active

052393917

ABSTRACT:
An apparatus, implemented in a halftone printing system, permits a halftone dot to be represented by an envelope that is formed from a combination of straight lines that are drawn from tangent points, on the outer periphery of the dot, to a reference axis for the dot. The intersection points of the tangent lines on the reference axis define the size (density) of the dot. The apparatus addressably stores the intersect points as sets of values for each size dot to provide a unique representation set that can be accessed to reconstruct a selected dot size for printing a halftone image.

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