Image halftone generation by static RAM look-up table

Details Image halftone generation by static RAM look-up table Image halftone generation by static RAM look-up table

1989-11-15

1991-08-20

Orsino, Joseph A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358455, 358460, 358465, H04N 140

Patent

active

050419200

ABSTRACT:
A halftone conversion system for converting digital pixels to binary pixels in which individual matrices in a memory having progressively changing x, y matrices of binary pixels are addressed by an address composed of a block of x pixels including the pixel being processed, a block of y lines including the line containing the pixel being processed, and the digital value of the pixel being processed, the pixel located at the x, y coordinates of the addressed matrix providing the binary pixel output.

REFERENCES:
patent: 4430748 (1984-02-01), Tuhro et al.
patent: 4661859 (1987-04-01), Mailloux et al.
patent: 4706077 (1987-11-01), Roberts et al.
patent: 4709274 (1987-11-01), Tanioka
patent: 4719516 (1988-01-01), Nagashima
patent: 4736254 (1988-04-01), Kotera et al.
patent: 4755813 (1988-07-01), Williams
patent: 4763199 (1988-08-01), Suzuki
patent: 4800442 (1989-01-01), Riseman et al.
patent: 4866533 (1989-09-01), Nagashima

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