Methods and apparatuses for the dynamic configuring of profiles used for the control of the frequency of clock signals. At least one embodiment of the present invention provides a means of dynamically generating, storing, updating and using spread spectrum profiles in a clock circuit to provide spread...http://www.google.com.hk/patents/US7434083?utm_source=gb-gplus-share專利 US7434083 - Method and apparatus for the generation and control of clock signals