Vertical filtering apparatus for raster scanned display

Details Vertical filtering apparatus for raster scanned display Vertical filtering apparatus for raster scanned display

1988-12-23

1991-04-02

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340793, G09G 510, G09G 114

Patent

active

050050117

ABSTRACT:
An apparatus and method is disclosed for reducing flicker in an interlaced computer generated raster-scanned display. Several circuits and methods are described for implementing vertical filtering. In general, the data for a given pixel on the nth, nth+1, nth+2 . . . nth+N line is read from memory and convolved to provide data for a given pixel on a display line before pixel data for other pixels along these lines is read from memory.

REFERENCES:
patent: 4215414 (1980-07-01), Huelsman
patent: 4322750 (1982-03-01), Lord et al.
patent: 4354186 (1982-10-01), Groothuis
patent: 4454506 (1984-06-01), Netravali et al.
patent: 4808984 (1989-02-01), Trueblood et al.

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