Abstract: A communication interface can connect to an information terminal. When detecting the connection between the communication interface and the information terminal, a verification interface verifies the security status of the information terminal. When there is no problem in the security status of the information terminal verified by the verification interface, a display displays an image based on an image signal received by the communication interface from the information terminal. The operation interface accepts an operation on the image displayed by the display. The communication interface transmits an operation signal responsive to the operation accepted by the operation interface to the information terminal, and then receives an image signal as a result of processing by the information terminal in accordance with the operation signal from the information terminal.

Abstract: A communication interface can connect to an information terminal. When detecting the connection between the communication interface and the information terminal, a verification interface verifies the security status of the information terminal. When there is no problem in the security status of the information terminal verified by the verification interface, a display displays an image based on an image signal received by the communication interface from the information terminal. The operation interface accepts an operation on the image displayed by the display. The communication interface transmits an operation signal responsive to the operation accepted by the operation interface to the information terminal, and then receives an image signal as a result of processing by the information terminal in accordance with the operation signal from the information terminal.

Abstract: A power supply device includes a spike absorption circuit that suppresses an avalanche breakage of a current shutdown switch due to a kickback voltage that may appear in response to the cut-off of a load current. The current shutdown switch is connected to secondary batteries. The spike absorption circuit is a series circuit of a protection switch, formed of a semiconductor element, and a diode. The power supply device further includes: a small-signal switch that controls turn-on and turn-off of the protection switch; and a delay circuit that maintains the small-signal switch in an ON state over a setup time after a current shutdown timing of the current shutdown switch. The delay circuit maintains the small-signal switch in the ON state over the setup time (T), and the small-signal switch thereby causes the protection switch to the ON state. Then, the spike absorption circuit damps the kickback voltage.

Abstract: A power supply device includes a spike absorption circuit that suppresses an avalanche breakage of a current shutdown switch due to a kickback voltage that may appear in response to the cut-off of a load current. The current shutdown switch is connected to secondary batteries. The spike absorption circuit is a series circuit of a protection switch, formed of a semiconductor element, and a diode. The power supply device further includes: a small-signal switch that controls turn-on and turn-off of the protection switch; and a delay circuit that maintains the small-signal switch in an ON state over a setup time after a current shutdown timing of the current shutdown switch. The delay circuit maintains the small-signal switch in the ON state over the setup time (T), and the small-signal switch thereby causes the protection switch to the ON state. Then, the spike absorption circuit damps the kickback voltage.

Abstract: A power supply system includes an authentication server. Before receiving power supplied from a power supply coil of a power supply apparatus, an electric vehicle is authenticated by the authentication server. For receiving power supplied from the power supply coil, the electric vehicle gives a power-supply request to request a power-supply controller, which controls the power supply apparatus, to issue a temporary ticket for receiving power supply. The electric vehicle transmits the temporary ticket to the power supply apparatus, and upon determining that the temporary ticket is legitimate, the power supply apparatus executes power supply.