Halftone screen generator and halftone screen and method for gen

Details Halftone screen generator and halftone screen and method for gen Halftone screen generator and halftone screen and method for gen

1995-06-08

1998-06-30

Frahm, Eric

Facsimile and static presentation processing

Facsimile

Recording apparatus

258459, H04N 140

Patent

active

057742294

ABSTRACT:
A halftone screen generator, halftone screen and a method for making the halftone screen are described. The halftone screen has a screen angle and rulings that define the theoretical centers of gravity of the halftone dots. The actual centers of gravity of the halftone dots are displaced from the theoretical centers of gravity by the length and angle of random phase vectors. In one example, the positional displacement of the centers of gravity of the dots is dot size dependent in an inverse relationship. The shift in dot centers of gravity away from the theoretical centers of gravity defined by the halftone screen effectively breaks up screen "patterning" and avoids objectionable halftone "graininess".

REFERENCES:
patent: 4149183 (1979-04-01), Pellar
patent: 4185304 (1980-01-01), Holladay
patent: 4350996 (1982-09-01), Rosenfeld
patent: 4456924 (1984-06-01), Rosenfeld
patent: 4499489 (1985-02-01), Gall et al.
patent: 4680645 (1987-07-01), Dispeto et al.
patent: 4700235 (1987-10-01), Gall
patent: 4918622 (1990-04-01), Granger et al.
patent: 4924301 (1990-05-01), Surbrook
patent: 5109283 (1992-04-01), Carley
patent: 5111302 (1992-05-01), Chan et al.
patent: 5197765 (1993-03-01), Mowry, Jr. et al.
patent: 5239391 (1993-08-01), Hamilton
patent: 5253084 (1993-10-01), Rylander
patent: 5315407 (1994-05-01), Sakamoto et al.

Affiliated with

Also associated with

Rating

Halftone screen generator and halftone screen and method for gen does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Halftone screen generator and halftone screen and method for gen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Halftone screen generator and halftone screen and method for gen will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1865534