Patent ID: 6642796
Filing Date: 2003-11-04
Classification: G06F

Abstract:
A method of generating quadrature related waves, comprising:(a) generating a sine value; (b) generating a cosine value; (c) generating a magnitude value equal to a sum of the squares of the sine value and the cosine value; (d) generating a negative feedback value as a function of the sine wave, the cosine value, and the magnitude value; (e) generating a next sine value using the sine value and the negative feedback value, whereby the next sine value represents part of a sine wave; (f) repeating steps (a) through (e) to generate a series of values representative of the sine wave; generating a first seed from a predetermined sampling frequency value and a desired signal frequency value; and generating a second seed from the predetermined sampling frequency value and the desired signal frequency value, wherein step (d) comprises generating the negative feedback value using the first and second seeds such that the first and second seeds cause the sine wave to have the desired frequency value.