Graphics video resolution improvement apparatus

Details Graphics video resolution improvement apparatus Graphics video resolution improvement apparatus

1982-04-23

1984-11-20

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340733, 340723, 358 11, 358140, G09G 102

Patent

active

044841884

ABSTRACT:
A video signal generation apparatus improves the resolution of the video signal by forming additional video scan lines between the successive scan lines by combining the video attributes of adjacent scan lines. This invention is particularly applicable to video display terminals and small computing systems which employ digital memories for storing graphic characters for display via a raster scan video display device. The graphics resolution may be improved in two dimensions by combining the techniques of averaging or smoothing a graphic character generated scan line by averaging or integrating a video attribute of the scan line over a period approximating the period of a individual picture element, together with forming new scan lines by combining the video attributes of adjacent graphic character generated scan lines. In a preferred embodiment of this invention an interlace scan system is formed using graphic character generated scan lines for the first half frame and the interpolated scan lines for the second half frame.

REFERENCES:
patent: 3982063 (1976-09-01), Brown et al.
patent: 4038668 (1977-07-01), Quarton
patent: 4081799 (1978-03-01), Granberg et al.
patent: 4193092 (1980-03-01), Stoffel
patent: 4322750 (1982-03-01), Lord et al.
patent: 4396912 (1983-08-01), Pozzi
IBM Technical Disclosure Bulletin, vol. 19, No. 11, "Interleaved Smoothing Raster for Vector CRT Displays", Axford, Apr. 1977, pp. 4412-4414.

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