Method and apparatus for video scaling and convolution for displ

Details Method and apparatus for video scaling and convolution for displ Method and apparatus for video scaling and convolution for displ

1997-01-10

2000-02-22

Shalwala, Bipin

Computer graphics processing and selective visual display system

Display peripheral interface input device

348441, 348446, G09G 504, H04N 701

Patent

active

060285893

ABSTRACT:
A method of and apparatus for convolution that provides both scaling and elimination of flicker when displaying computer generated or computer processed information on an interlaced, television monitor. One preferred embodiment includes a bilinear interpolation for scaling combined with a modified three line convolution for flicker reduction. In one preferred embodiment, 8 lines of a source computer image are scaled to 7 lines of a television image for display. The weighted contribution of each input line varies according to which combination of lines contribute to each output line, and the mathematically optimal weighting factors are modified for easier implementation in hardware.

REFERENCES:
patent: 4924315 (1990-05-01), Yamashita
patent: 5005011 (1991-04-01), Perlman et al.
patent: 5097257 (1992-03-01), Clough et al.
patent: 5182643 (1993-01-01), Futscher
patent: 5185817 (1993-02-01), Degi et al.
patent: 5410616 (1995-04-01), Kidd

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