Method and apparatus for making hard copy records of curves including curves which are mathematically described as multi-valve functions from periodically sampled data points

Abstract From the Canadian patent

A line scan cathode ray tube (CRT) recorder generates a hard copy record of a curve from stored data representing the X-Y coordinates of a series of a sample points along the curve. The curve may be described mathematically by a multi-valued function. One pass of the recording media past a linear sweeping CRT beam records the entire curve in a predetermined number of recording sweeps. The distance (.DELTA. X and .DELTA. Y respectively) between, each and every Xn Yn and the next successive stored, sample point Xn+1 Yn+1 is determined prior to each, recording sweep of the beam and these distances .DELTA. X and, .DELTA. Y, are divided by a predetermined number to give a factor interpolating …