Patent ID: 6937678

Claim:
A method of filtering a digital input signal having a digital value associated therewith, the method comprising: determining a first rate of change of the digital input signal value relative to a previous digital output signal value; supplying a rate adjusted digital output signal value that is (i) equivalent to the digital input signal value when the first rate of change is less than a predetermined rate magnitude and (ii) equivalent to a predetermined rate limit value when the first rate of change equals or exceeds the predetermined rate magnitude; determining a second rate of change of the rate adjusted digital output signal value relative to a previous rate adjusted digital output signal value; and supplying an acceleration adjusted digital output signal value that is (i) equivalent to the rate adjusted digital output signal value when the second rate of change is less than a predetermined acceleration magnitude and (ii) equivalent to the rate adjusted digital output signal value with an acceleration adjustment value subtracted therefrom when the second rate of change equals or exceeds the predetermined acceleration magnitude.