Low resolution raster images

Details Low resolution raster images Low resolution raster images

1981-09-12

1984-03-13

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358284, 340730, 382 54, H04N 138, H04N 514

Patent

active

044371225

ABSTRACT:
The present invention enhances the resolution and quality of characters of a system receiving the information initially in the form of video display pixels and providing hard copy output. This is accomplished by storing at least three successive lines of video data in successive, parallel connected shift registers, applying the outputs of the shift registers to a decoder, and generating driving signals for the printer head. The decoder compares the pixels on the same line as well as in preceeding and succeeding lines that surround each specific input pixel to generate the printer head driving signals according to whether straight or curved line segments are to be formed. In effect, the printer increases the density of the information elements and simultaneously provides rounding off of character edges and smoothing of diagonals.

REFERENCES:
patent: 4032977 (1977-06-01), Liao
patent: 4150400 (1979-04-01), Wong

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