High speed graphics

Details High speed graphics High speed graphics

G - Physics

09

G

375/36

G09G 3/00 (2006.01) G09G 1/18 (2006.01) G09G 5/20 (2006.01)

Patent

CA 1167579

HIGH SPEED GRAPHICS Abstract of the Disclosure 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 sig- nals, 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 instan- aneous sweep position matches one of the sequence of indicia coordinates. The recursive nature of the pro- cessor 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.

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