Patent ID: 7831852

Claim:
A power supply management system comprising: an information processor; 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 including a monitor unit that monitors a signal received from outside through the communication line and a signal detected inside by using the electric power supplied through the power supply line, a change unit that changes an internal power supply path so as to supply external electric power other than the electric power supplied through the power supply line on the basis of the monitoring results of the monitor unit; a power supply, wherein the change unit changes the internal power supply path to a first power supply path from the information processor through the power supply line or to a second power supply path from the power supply, alternatively; and a detection unit that detects the amount of the electric power supplied through the first power supply path, wherein the change unit changes the internal power supply path from the first power supply path to the second power supply path when the amount of the supplied electric power detected by the detection unit is larger than a predetermined value.