Accession Number : ADD006859

Title :   Digital Plotting System for Displaying Straight Line Information.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Reins,Edward R ; Curry,Charles D B

Report Date : 31 Jul 1979

Pagination or Media Count : 30

Abstract : A digital plotting system for displaying straight line information. This system employs a long vector to describe a long straight line on a graph that starts from any point, extends in any direction and has a specific length. The direction is implemented by an eight 45 deg. quadrant system wherein the specfic angle within a particular quadrant is derived from binary slope storage and rate generator devices and is referenced from either a vertical adjacent line or a horizontal adjacent line. The long vector logic is compatible for use with a digital plotting system for displaying all forms of graphic information including curved lines, straight lines and characters. (Author)

Descriptors :   *Patents, *Plotters, *Display systems, Digital systems, Slope, Rates, Lines(Geometry), Shift registers, Graphics

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE