Abstract: An information processing apparatus includes a power supply control portion, and a notification processing portion. The power supply control portion executes power supply control that includes: a first step of supplying power to a non-volatile storage portion in a case where an access request to access the storage portion is received while power supply to the storage portion is stopped; and a second step of stopping power supply to the storage portion after an access process of accessing the storage portion in response to the access request is completed. The notification processing portion notifies of a transmission source of access requests with the highest number of transmissions of the access requests received while power supply to the storage portion is stopped among the transmission sources of access requests when the number of executions of the power supply control exceeds a predetermined reference number of times.

Abstract: An upperlimit communication speed of a power-saving wired LAN circuit 13 is lower than an upperlimit communication speed of a high-speed wired LAN circuit 12, and power consumption of the power-saving wired LAN circuit 13 is smaller than power consumption of the high-speed wired LAN circuit 12. Further, when the electronic apparatus 1 moves to a suspended status, the wired LAN management unit 16b switches a wired LAN circuit used for wired LAN communication from the high-speed wired LAN circuit 12 to the power-saving wired LAN circuit 13.

Abstract: An image forming apparatus includes a speed calculating portion and a communication setting portion. In a state where a communication with the switching hub has been established by a highest-speed candidate method among a plurality of candidate methods that respectively have different rated communication speeds, the speed calculating portion calculates a result communication speed for each of the one or more host apparatuses based on an amount of received job data and a reception required time for each of the one or more host apparatuses, wherein the candidate methods are candidates for a communication method to be adopted. The communication setting portion selects, as an adopted communication method, one of the plurality of candidate methods based on the result communication speed for each of the one or more host apparatuses, and establishes a communication with the switching hub by the adopted communication method.

Abstract: An image forming apparatus includes a speed calculating portion and a communication setting portion. In a state where a communication with the switching hub has been established by a highest-speed candidate method among a plurality of candidate methods that respectively have different rated communication speeds, the speed calculating portion calculates a result communication speed for each of the one or more host apparatuses based on an amount of received job data and a reception required time for each of the one or more host apparatuses, wherein the candidate methods are candidates for a communication method to be adopted. The communication setting portion selects, as an adopted communication method, one of the plurality of candidate methods based on the result communication speed for each of the one or more host apparatuses, and establishes a communication with the switching hub by the adopted communication method.

Abstract: An image forming apparatus includes a first communication section, storage, and a first controller. The storage stores therein history information. When a job is selected as a selected job, the first controller selects a supposed user from the history information on the basis of the selected job, and sends an inquiry message to a terminal device of the supposed user to inquire whether or not the supposed user has particular recording paper. Each terminal device includes a second controller. When information indicating presence or absence of the particular recording paper is input as an answer to the inquiry message, the second controller sends the information indicating presence or absence of the particular recording paper to the image forming apparatus.

Abstract: An image forming apparatus includes a first communication section, storage, and a first controller. The storage stores therein history information. When a job is selected as a selected job, the first controller selects a supposed user from the history information on the basis of the selected job, and sends an inquiry message to a terminal device of the supposed user to inquire whether or not the supposed user has particular recording paper. Each terminal device includes a second controller. When information indicating presence or absence of the particular recording paper is input as an answer to the inquiry message, the second controller sends the information indicating presence or absence of the particular recording paper to the image forming apparatus.

Abstract: Provided is an electronic device and an authentication method able to restrict and disable an operation when a third person other than an authorized user who is registered as a user, and prevent information leakage without requiring the user a complicated operation. At a time when an operator inputs an authentication request by any one of the user identification numbers, when first information inputted via the input part is coincided with the first password related to the user identification number for which the authentication request is inputted, and when characteristic data at a time when the first information is inputted falls within a specified range of a histogram of the databases related to the user identification number for which the authentication request is inputted, the operator is authenticated as the user for which the authentication request is inputted.

Abstract: An electronic equipment includes a control unit, an EMI frequency storage unit, and a settable range detection unit. The EMI frequency storage unit stores respective frequencies of EMI noise components in ones of driving pulse signals, which are transmitted from the control unit to other modules than a display module in association with the other modules. The settable range detection unit detects a settable range of the frequency of one of the driving pulse signals, which is transmitted from the control unit to the display unit. When transmitting the driving pulse signal to the display module, the control unit sets, as the frequency of the driving pulse signal to the display module, a frequency that is a frequency excluding the frequencies of the EMI noise components stored in association with the other modules that are being driven and also is a frequency in the settable range that has been detected.

Abstract: Provided is an electronic device and an authentication method able to restrict and disable an operation when a third person other than an authorized user who is registered as a user, and prevent information leakage without requiring the user a complicated operation. At a time when an operator inputs an authentication request by any one of the user identification numbers, when first information inputted via the input part is coincided with the first password related to the user identification number for which the authentication request is inputted, and when characteristic data at a time when the first information is inputted falls within a specified range of a histogram of the databases related to the user identification number for which the authentication request is inputted, the operator is authenticated as the user for which the authentication request is inputted.

Abstract: An electronic equipment includes a control unit, an EMI frequency storage unit, and a settable range detection unit. The EMI frequency storage unit stores respective frequencies of EMI noise components in ones of driving pulse signals, which are transmitted from the control unit to other modules than a display module in association with the other modules. The settable range detection unit detects a settable range of the frequency of one of the driving pulse signals, which is transmitted from the control unit to the display unit. When transmitting the driving pulse signal to the display module, the control unit sets, as the frequency of the driving pulse signal to the display module, a frequency that is a frequency excluding the frequencies of the EMI noise components stored in association with the other modules that are being driven and also is a frequency in the settable range that has been detected.

Abstract: A power supply apparatus switches between normal operation mode and power saving mode, to supply power to the loads. Power supply apparatus includes first power supply, second power supply, current detection portion, determination portion, and supply control portion. First power supply is configured to supply power to plurality of loads. Second power supply has an output current capacity which is less than that of first power supply. Current detection portion is configured to detect current consumption of first load that is operating. Determination portion is configured to determine whether or not the current consumption detected by current detection portion is less than or equal to the output current capacity of second power supply. Supply control portion is configured to supply, based on a result of determination made by determination portion, power to the first load from one of first power supply and second power supply in the power saving mode.

Abstract: A power supply apparatus switches between normal operation mode and power saving mode, to supply power to the loads. Power supply apparatus includes first power supply, second power supply, current detection portion, determination portion, and supply control portion. First power supply is configured to supply power to plurality of loads. Second power supply has an output current capacity which is less than that of first power supply. Current detection portion is configured to detect current consumption of first load that is operating. Determination portion is configured to determine whether or not the current consumption detected by current detection portion is less than or equal to the output current capacity of second power supply. Supply control portion is configured to supply, based on a result of determination made by determination portion, power to the first load from one of first power supply and second power supply in the power saving mode.