Patent ID: 6081768
Filing Date: 2000-06-27
Classification: G01R,H02H

Abstract:
A method of detecting a peak in a sinusoidal digital signal, comprising the steps of:establishing a first threshold which is a first predetermined percentage of the magnitude of the sinusoidal digital signal;establishing a second threshold which is a second predetermined percentage of the magnitude of the sinusoidal digital signal, the second threshold being greater than said first threshold;counting each successive sample in a half-cycle of the sinusoidal digital signal having a magnitude above said first threshold;determining which sample k counted in said counting step had the greatest magnitude, where k is the value for successive samples above the first threshold;comparing a magnitude of sample k to said second threshold; andrejecting said compared sample k as the peak of the sinusoidal digital signal if the magnitude of said sample k is less than said second threshold.