Line segment video display apparatus

Details Line segment video display apparatus Line segment video display apparatus

1979-03-16

1982-03-09

Nusbaum, Mark E.

Boots, shoes, and leggings

340723, 340731, 340747, G06F 314

Patent

active

043193390

ABSTRACT:
A raster type display apparatus includes interlaced even-and-odd frames. A digital memory of a computer stores line segment data in locations which are sequentially read out to form a line segment display with overlapping line segments. An off-scale detector prevents a line segment directly between the data points and creates a pair of line segments at the top and bottom of the display screen. An extended line from a break point in a curve to screen bottom is also prevented. Resettable registers monitor the carrier bits of digital multiplier and adder and are connected by an even-odd detector to actuate an exclusive "OR" gate to complement the output and generate the appropriate split display.

REFERENCES:
patent: 3497760 (1970-02-01), Kiesling
patent: 3525092 (1970-08-01), Neitzel
patent: 3603963 (1971-09-01), Ward
patent: 3665408 (1972-05-01), Erdahl et al.
patent: 3665410 (1972-05-01), Holland
patent: 3866210 (1975-02-01), Lokerson et al.
patent: 3891982 (1975-06-01), Cheek et al.
patent: 4032912 (1977-06-01), Wood
patent: 4070710 (1978-01-01), Sukonick et al.

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