Patent ID: 8085106

Claim:
A method of modulating a frequency carrier signal for reducing radiated or conducted electromagnetic interference, comprising: receiving a clock signal from a clock generation circuit; generating a set of frequency modulation parameters associated with said frequency carrier signal; setting a repetition period and a sequence of programmable time durations, wherein the sum of said time durations equal to said repetition period; selecting one of said frequency modulation parameters to use in one of said programmable time durations, wherein the value of said selected frequency modulation parameter is kept within its corresponding time duration; applying said frequency modulation parameters to said frequency carrier signal to affect the output frequency of said frequency carrier signal; and using standard Quasi-Peak measurement method and detector as a way for the selection of said frequency modulation parameters and setting said time durations, wherein said repetition period is set to be substantially longer than the decay time of said Quasi-Peak detector.