Patent ID: 7383456

Claim:
An information processing apparatus that autonomously controls supply of electric power in respective predetermined functional units forming the apparatus, the information processing apparatus including plural management domains, which include the predetermined functional units and serve as control units in supplying electric power, comprising: a power control unit that is capable of supplying electric power to each of the power management domains; an execution control unit that directs the power control unit to supply electric power to a power management domain that includes a functional unit to execute an inputted instruction and stops supplying electric power to the power management domain at an end of execution of the instruction in the functional unit; and an event management unit that controls the power control unit to supply electric power to the execution control unit in response to an event notification signal indicating an input of the inputted instruction, notifies the execution control unit of a content of the inputted instruction, and controls the power control unit to stop supplying electric power to the power management domain that includes the execution control unit in response to an end of execution of the inputted instruction in the execution control unit, wherein the execution control unit is a CPU and electric power to the CPU is stopped based on a CPU direction to the event management unit.