Sampling point generating apparatus

Details Sampling point generating apparatus Sampling point generating apparatus

1994-07-12

1996-10-22

Nguyen, Phu K.

G06F 1500

Patent

active

055686010

ABSTRACT:
A sampling point generating apparatus generates sampling points on an original curve even at gentle slope portions of the original curve and, according to the sampling points, provides a curve that closely approximates the original curve. To accomplish this function, the apparatus has a unit for drawing a straight line between the start and end points of the original curve; a unit for calculating errors between the coordinates of the original curve and the coordinates of the straight line; a unit for detecting extremal value points, where increase or decrease in the errors is reversed, according to the errors; and a unit for generating intermediate points among the extremal value points. The extremal value points and intermediate points are used as sampling points to provide a cubic curve that closely approximates the original curve.

REFERENCES:
patent: 5261033 (1993-11-01), Oka
patent: 5357602 (1994-10-01), Ohta
Karow, Peter, Digital Formats for Typefaces, Appendix X: Marking Rules, May 18, 1989, pp. 410-417, ISBN 4-946454-01-2, printed in Japan (with attached English language translation).

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