Chordal tolerance control in circles on pen plotters for increased throughput

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United States of America Patent

PATENT NO 5687298
SERIAL NO

08054852

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Abstract

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This is a method and associated implementation logic for plotting circles with a pen plotter to obtain a substantial and unexpected increase in throughput of the plotter when plotting circles having a radius equal to or smaller than a small radius lower limit. The method comprises the steps of, employing an independently calculated chord length and number of chords at the independently calculated chord length for plotting circles having a radius greater than the small radius lower limit; and, employing a maximum chord length which is not separately discernable to the naked eye in a circle of a desired radius and an associated number of maximum length chords when plotting a circle having a radius equal to or smaller than the small radius lower limit. In tested embodiments, the method has provided a twelve-fold increase in plotter throughput when plotting small radius circles.

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Patent Owner(s)

Patent OwnerAddress
CALCOMP INCANAHEIM CA 92803

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Stapleton, Jeff T Huntington Beach, CA 5 20

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