Patent ID: 8181049

Claim:
A method for controlling power consumption of a processor, the method comprises: determining, in response to an activity change indicator and to a current power consumption of the processor, whether to change a frequency of a clock signal that is provided to the processor; wherein the activity change indicator indicates that the processor is expected to change its activity; changing, if determining to change the frequency of the clock signal, the frequency of the clock signal by a reduction of the frequency of the clock signal that is followed by an increment of the frequency of the clock signal; and modifying the frequency of the clock signal provided to the processor while maintaining a frequency of another clock signal that is provided to components that are coupled to the processor unchanged; wherein the changing of the frequency of the clock signal is responsive to an expected change of a supply voltage that is supplied to the processor as a result of a possible change in a power consumption of the processor due to an expected change of activity of the processor.