Video graphics controller with selectable pattern features for l

Details Video graphics controller with selectable pattern features for l Video graphics controller with selectable pattern features for l

1993-09-07

1995-05-16

Jankus, Almis

395142, 395162, G06F 1562

Patent

active

054168970

ABSTRACT:
Circuitry for drawing lines includes a video memory for storing pixel data and circuitry for generating a sequence of addresses defining a line of pixels in the video memory. A first memory stores a sequence of pattern units corresponding to the generated sequence of addresses. A second memory stores a value indicating a current pattern unit. Writing circuitry writes to the video memory at a generated address responsive to a current pattern unit. A third memory stores a control value which is accessed by update circuitry for updating the second memory to indicate the next pattern unit. The update circuitry may selectively update the second memory to the sequential pattern unit or reset the second memory to a predetermined pattern unit.

REFERENCES:
patent: Re31200 (1983-04-01), Sukonick et al.
patent: 4360884 (1982-11-01), Okada et al.
patent: 4454593 (1984-06-01), Fleming et al.
patent: 4677573 (1987-06-01), Brown et al.
patent: 4695834 (1987-09-01), Gojo et al.
patent: 4779210 (1988-10-01), Katsura et al.
patent: 4837847 (1989-06-01), Shirasaka et al.
patent: 5283561 (1994-02-01), Lumelsky et al.
"Ambiguities in Incremental Line Rastering", by J. E. Bresenham, 1987 IEEE, May 1987, pp. 31-43.
"Algorithm for Computer Control of a Digital Plotter", by J. E. Bresenham, IBM Systems Journal, vol. 4, No. 1, 1965, pp. 25-30.

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