Abstract: The electric power supply system includes a first terminal that electric power is supplied thereto from a first power supply to operate, a second terminal that is connected to the first terminal and that electric power is supplied thereto from a second power supply to operate, and a controller that controls electric power supply so as to supply electric power from the first terminal to the second terminal based on the operation state of the first terminal.

Abstract: A power supply system includes: a first device that commands an external device to perform processing, and is configured to supply electric power to the external device; a second device that is connected to the first device through a communications line, and that performs the processing in accordance with the command received from the first device; and a request unit that requests the first device to supply to the second device an amount of electric power needed for the second device performing the processing commanded by the first device, the first device determining whether or not to supply electric power to the second device, in accordance with at least one of; (i) content of the command sent to the second device, and (ii) the amount of electric power requested by the request unit and an amount of electric power which the first device is capable of supplying.

Abstract: A power feed system includes: an information device; a terminal device that is connected the information processing device, and that has a power source; and a selection unit that selects, as power utilized by the terminal device, at least one of first power from the power source of the terminal device and second power supplied from the information processing device according to an operating state of the terminal device.

Abstract: The power supply management system is provided with an information processor and a terminal that is connected to the information processor by a communication line and a power supply line and that is controlled for power supply by the information processor. The terminal includes a monitor unit that is capable of monitoring at least any one of a signal received from the outside through the communication line and a signal detected inside by using the electric power supplied through the power supply line and a change unit that changes an internal power supply path so as to supply electric power other than the electric power supplied through the power supply line on the basis of the monitoring results of the monitor unit.

Abstract: A power supply system includes: a first device that commands an external device to perform processing, and is configured to supply electric power to the external device; a second device that is connected to the first device through a communications line, and that performs the processing in accordance with the command received from the first device; and a request unit that requests the first device to supply to the second device an amount of electric power needed for the second device performing the processing commanded by the first device, the first device determining whether or not to supply electric power to the second device, in accordance with at least one of; (i) content of the command sent to the second device, and (ii) the amount of electric power requested by the request unit and an amount of electric power which the first device is capable of supplying.

Abstract: A power feed system includes: an information device; a terminal device that is connected the information processing device, and that has a power source; and a selection unit that selects, as power utilized by the terminal device, at least one of first power from the power source of the terminal device and second power supplied from the information processing device according to an operating state of the terminal device.

Abstract: The electric power supply system includes a first terminal that electric power is supplied thereto from a first power supply to operate, a second terminal that is connected to the first terminal and that electric power is supplied thereto from a second power supply to operate, and a controller that controls electric power supply so as to supply electric power from the first terminal to the second terminal based on the operation state of the first terminal.

Abstract: The power supply management system is provided with an information processor and a terminal that is connected to the information processor by a communication line and a power supply line and that is controlled for power supply by the information processor. The terminal includes a monitor unit that is capable of monitoring at least any one of a signal received from the outside through the communication line and a signal detected inside by using the electric power supplied through the power supply line and a change unit that changes an internal power supply path so as to supply electric power other than the electric power supplied through the power supply line on the basis of the monitoring results of the monitor unit.