An information processing apparatus includes a power processor, an interface, a first detector that detects at least one of a voltage value and a current value on an electric power line which connects the power processor and the interface, a second detector that detects at least one of a voltage value and a current value on the electric power line, a switch that switches a supply of electric power supplied from the interface to an outside, and a controller. The controller controls the switch to restrict the electric power supplied from the interface to an outside in a case where at least one of a detection value of the first detector and a detection value of the second detector is equal to or greater than a threshold value.

An information processing apparatus includes a first controller that controls an overall operation of the apparatus, and a second controller that outputs an image stored in a specific area of a storage medium to a display device if a predetermined time has elapsed from activation. The second controller generates a second image and writes the second image in the specific area. If a first image is received from the first controller after the second controller writes the second image, the second controller overwrites the second image in the specific area with the first image.

An image processing apparatus has a normal mode and a power saving mode as a power consumption mode. In the normal mode in which an image processor requires electric power supply, a direct voltage output by an AC-DC converter is supplied to the image processor. A voltage according to a power feed request from an external device connected to an USB connector is output by a variable output DC-DC converter via a power-feed terminal. In the power saving mode in which the electric power supply for the image processor in unnecessary, the voltage according to the power feed request from the external device connected to the USB connector is output by the AC-DC converter without routing through the variable output DC-DC converter.

An information processing apparatus includes an interface and a controller. The interface performs power delivery and communication with an external apparatus. The controller performs: storing, in a memory, history information relating to power delivery performed with the external apparatus through the interface, the history information including identification information of the external apparatus and a power role of at least one of the information processing apparatus and the external apparatus, the identification information and the power role being stored in association with each other, the power role being one of a power source of supplying power and a power sink of receiving power; and in response to detecting connection of the external apparatus through the interface, determining the power role of the information processing apparatus based on the identification information of the external apparatus connected through the interface and on the history information stored in the memory.

An information processing apparatus includes a first wireless communication unit that establishes first wireless communication with a terminal apparatus by a first wireless communication method, a second wireless communication unit that establishes, by a second wireless communication method, third wireless communication with an access point of a wireless communication network that establishes second wireless communication with the terminal apparatus by the second wireless communication method, and a control unit that controls a mode based on whether or not driving power is supplied from a battery.

A CPU of an MFP receives battery information from a first external device via a first interface, determines whether a total amount of electric power supplied to a plurality of interfaces from a power supply is maintained, and reduces an amount of the electric power supplied to the first external device via the first interface in a case where determining that the first external device has no battery based on the battery information in response to determining that the total amount of the electric power supplied to the plurality of the interfaces from the power supply is not maintained.

An object of the present disclosure is to perform discharge control that suppresses deterioration in power storage performance of a power storage component by taking the state of power supply equipment into consideration. A power supply apparatus comprises: a power storage unit that stores electric charges from an external power supply; a control unit that controls charge and discharge of the power storage unit; a state determination unit that determines the power supply state of the external power supply; and a voltage detection unit that detects the voltage at the power storage unit. The control unit performs first discharge control to lower the voltage at the power storage unit to a smaller second voltage value if a predetermined time elapses since the completion of drive of a drive unit and the state determination unit determines that the power supply state is not a state of restricting power to be supplied.

A power supply control device includes a switch to output a switch depression signal, which is in a first logic level during a period in which the switch is not depressed, and is in a second logic level during a period in which the switch is depressed, a first power supply to generate a first DC voltage based on AC power, which is supplied from an outside, and to apply the first DC voltage to a predetermined load, and a second power supply configured to generate a second DC voltage based on the AC power irrespective of a state of the switch, and a controller to operate on the second DC voltage, to switch an operation state of the first power supply when the switch depression signal has switched from a first logic level to a second logic level and remains at the second logic level.

An apparatus, such as an image forming apparatus, includes a Universal Serial Bus (USB) host interface configured to connect to a USB device, a direct current to direct current (DC-DC) converter configured to supply power to the USB device connected to the USB host interface, and a control unit configured to switch the DC-DC converter from a pulse width modulation (PWM) mode to a pulse frequency modulation (PFM) mode based on a type of the USB device connected to the USB host interface.

An image processing apparatus includes: a power supply; a first interface; a first controller configured to control communication with the external device via the first interface, the communication including communication relating to image data and communication relating to power exchange to and from the external device; a second controller configured to control power fed from the power supply to the external device connected to the first interface, based on information obtained by the communication relating to power exchange to and from the external device; and a first path switch configured to: form a first communication path connecting the first controller and the first interface in a first power mode; and form a second communication path connecting the second controller and the first interface without via the first controller in a second power mode.