Patent ID: 7414450

Claim:
A system for adaptively providing a power supply voltage, the system comprising: an oscillator configured to receive an output voltage and generate a firs signal, the first signal being associated with a first frequency and a first period; a frequency comparator configured to receive the first signal associated with the first frequency and a second signal associated with a second frequency and to generate a third signal if the first frequency and the second frequency are not equal; a voltage regulator coupled to the frequency comparator and configured to generate the output voltage based on at least information associated with the third signal; wherein: the output voltage is received by a powered system; the powered system is configured to receive a clock signal associated with a clock frequency, the clock frequency being equal to the second frequency; the powered system includes a first signal path associated with a first time delay; the first period is equal to or longer than the first time delay; the output voltage is adjusted if the first frequency and the second frequency are not equal.