High speed graphics

Details High speed graphics High speed graphics

1980-08-29

1983-05-17

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

364521, 364742, 340734, 340803, 340743, G09G 114

Patent

active

043842860

ABSTRACT:
A display processor for displaying complex curves includes an initiating processor, responsive to indicia selection signals for producing signals representing at least one coordinate on said indicia, and recursive processor means responsive to said initiating processor for generating a sequence of signals, each signal in the sequence representing different coordinates of said indicia, and for also generating a corresponding sequence of signals representing rate of change of at least one parameter of said coordinates, a comparator responsive to the output of said recursive processor and to instantaneous sweep position for, at times, illuminating the display field when the instantaneous sweep position matches one of the sequence of indicia coordinates. The recursive nature of the processor limits the memory required during the course of the processing, and since the recursive processor performs only the functions of shifting and adding, the processing time expended is materially reduced over that previously required.

REFERENCES:
patent: 3231726 (1966-01-01), Williamson
patent: 3772677 (1973-11-01), Sommer
patent: 3987284 (1976-10-01), Hogan et al.
patent: 4127850 (1978-11-01), Vallins
patent: 4168488 (1979-09-01), Evans
patent: 4225929 (1980-09-01), Ikeda
patent: 4280190 (1981-07-01), Smith

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