Computer assisted design and electromechanical operating system

Details Computer assisted design and electromechanical operating system Computer assisted design and electromechanical operating system

1985-05-06

1987-03-31

Krass, Errol A.

Boots, shoes, and leggings

364900, 364167, G06F 1560

Patent

active

046548050

ABSTRACT:
A micro-computer is coupled to the X-Y coordinate drives of a plotting table or the like and it is programmed to provide for monitor displayed pattern design. Straight or circular lines are subdivided into a number of unit steps based upon the system resolution such that each unit step segment of a straight line and each unit step chord of a circular line corresponds to said system resolution. The sine and cosine functions of the slopes of said segments or chords are summed, and the X and Y coordinate drives are advanced one unit step each time the cosine and sine functions, respectively, crosses an integer boundary.

REFERENCES:
patent: 4419740 (1983-12-01), Hevenor, Jr.
patent: 4541060 (1985-09-01), Kogawa
Fisk, "Control for Digital Plotter", Jul. 1970, IBM Technical Disclosure Bulletin, pp. 458-459.

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