Screening circuit for variable angle screening of image pixels

Details Screening circuit for variable angle screening of image pixels Screening circuit for variable angle screening of image pixels

1991-06-24

1993-06-29

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358298, 358459, H04N 140

Patent

active

052239535

ABSTRACT:
A programmable variable screening circuit with memory for storing at each address location both a pixel screen value and the memory address of the screen value for the next pixel to be screened, and a control including a latch pair for separating data from each memory location addressed into a screen value for screening the pixel and an address for addressing the memory location for the next screen value.

REFERENCES:
patent: 3900834 (1975-08-01), Casey et al.
patent: 4149194 (1979-04-01), Holladay
patent: 4185304 (1980-01-01), Holladay
patent: 4419662 (1983-12-01), Puskas et al.
patent: 4755813 (1988-07-01), Williams
patent: 4916551 (1990-04-01), Lin et al.
patent: 5124803 (1992-06-01), Troxel
patent: 5172248 (1992-12-01), Urabe et al.

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