Abstract: An information processing apparatus includes a first power source generation unit configured to generate a first voltage lower than a predetermined supply voltage based on at least power supplied from a battery, from a supply voltage power source of the predetermined supply voltage, and output the first voltage as a first voltage power source; a second power source generation unit configured to generate a second voltage lower than the first voltage and used when at least a system is activated, and output the second voltage as a second voltage power source; and a power source switching unit configured to switch the supply voltage power source with the first voltage power source to supply the first voltage power source to the second power source generation unit, and cause the second power source generation unit to generate the second voltage power source from the first voltage power source.

Abstract: An information processing apparatus includes a first power source generation unit configured to generate a first voltage lower than a predetermined supply voltage based on at least power supplied from a battery, from a supply voltage power source of the predetermined supply voltage, and output the first voltage as a first voltage power source; a second power source generation unit configured to generate a second voltage lower than the first voltage and used when at least a system is activated, and output the second voltage as a second voltage power source; and a power source switching unit configured to switch the supply voltage power source with the first voltage power source to supply the first voltage power source to the second power source generation unit, and cause the second power source generation unit to generate the second voltage power source from the first voltage power source.

Abstract: Systems and methods are disclosed herein that generally involve wirelessly transmitting power to an electronic device with improved efficiency by reducing or eliminating the Z direction positional gap between the power transmitter and the power receiver and ensuring that the transmitter and receiver electrodes are substantially parallel. In some embodiments, a charging pad fits in the clearance space beneath an electronic device having feet that support the electronic device in an elevated position. In some embodiments, a charging pad includes recesses to accommodate the feet of an electronic device to reduce or eliminate the Z direction positional gap between the electronic device and the charging pad. In some embodiments, a charging pad is biased towards an electronic device by one or more resilient members such that the charging pad conforms to the bottom of the electronic device and such that the Z direction positional gap is reduced or eliminated.

Abstract: A power supply circuit prevents, without the use of a series diode, the flow of reverse current from a battery to an AC power adaptor when the power adaptor is disconnected from its external power source. The circuit includes both voltage and current detectors to determine if the output voltage and current of the power adaptor are above or below predetermined reference levels. A summing circuit sums the outputs of the voltage and current detectors, and when both the detected voltage and current are below the reference levels, a switch disconnects the battery from the output terminal of the power adaptor, thereby preventing reverse current flow.