Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1987-11-16
1989-03-28
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358138, 358140, 358160, 364521, H04N 713
Patent
active
048169137
ABSTRACT:
A processor for expanding a compressed video signal includes a pixel interpolator which interpolates between input pixel values in two dimensions. This interpolator calculates and stores intermediate pixel values which are interpolated in the vertical direction. A pair of these intermediate pixel values are then fed back into the interpolator which performs a horizontal interpolation to produce pixel values that are interpolated in both the horizontal and vertical dimensions. In steady state operation, the horizontal and vertical interpolation operations are alternated to produce a stream of two-dimensionally interpolated values.
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Astle Brian
Harney Kevin
Keith John M.
Sprague David L.
Britton Howard W.
Herrmann Eric P.
Rasmussen Paul J.
Technology Inc. 64
Whitacre Eugene M.
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