Patent ID: 7966507
Filing Date: 2011-06-21
Classification: G06F

Abstract:
1. A device for controlling power-supply timings for supplying power from an external power supply unit to a plurality of circuit elements having different power-supply timings, the device comprising: a plurality of power-supply lines configured to supply the power to respective groups of the circuit elements, the respective groups determined based on power-supply timings required by the circuit elements; and a control unit that controls the power-supply timings for supplying the power from the external power supply unit in an order in response to the power-supply timings required by the circuit elements for each of the power-supply lines, wherein the circuit elements include the external power supply unit outputs a first power-saving mode power that is supplied even in the power-saving mode, and a second power-saving mode power that is not supplied in the power-saving mode; the power-supply lines include a power-supply timing to supply the second power-saving mode power to each circuit of the second circuit element in the second power-supply line is controlled as a power-supply timing control process at a time of cancelling the power-saving mode.