An information processing apparatus includes a light emitting unit and a light receiving unit for receiving light output from the light emitting unit, and includes a detection unit for outputting a light reception signal indicating that the light receiving unit has received light from the light emitting unit, a driving signal output unit for outputting a driving signal to the detection unit so that the light emitting unit intermittently outputs light, a detection signal output unit for outputting, based on the output driving signal and the output light reception signal, a detection signal indicating whether an object exists between the light emitting unit and the light receiving unit, and a control unit including an interrupt port to which the output detection signal is input and for returning from a power saving state in response to the detection signal being input to the interrupt port in the power saving state.

An electronic device includes: an operation section, a reception section, a human body detection sensor, and a mode switching section. The mode switching section switches the electronic device between a normal operation mode permitting a normal operation and a sleep mode in a power saving state based on presence or absence of a detection signal from the human body detection sensor. Then the mode switching section stops in a case where a state in which the reception section receives an operation made by use of the operation section continues for a predefined period of time the switching between the normal operation mode and the sleep mode based on the presence or absence of the detection signal.

An image forming system includes a main body including a first control part controlling a power mode of the main body and an engine executing image processing, and an operation apparatus receiving an operation for instructing the engine to execute the image processing. The operation apparatus including a second control part controlling a power mode of the operation apparatus. When the operation apparatus receives an instruction to shift the power mode of the main body or the operation apparatus, the first control part determines whether shifting is possible based on a first program executed by the main body and controls a power supply of the main body according to the determination, and the second control part determines whether shifting is possible based on a second program executed by the operation apparatus and controls a power supply of the operation apparatus according to the determination.

An image forming apparatus having a USB communication function includes a control interface unit to perform USB control communication, a data interface unit to perform USB data communication, and a control unit to perform an event in a low power mode according to a signal input through the control interface unit, and to perform an event in a normal mode according to a signal input through the control interface unit and the data interface unit. Therefore, the low power mode may be effectively implemented.

An information processing apparatus includes an image processing section that executes image processing, the operation control section that controls an operation of the information processing apparatus in any of two or more operation states including at least a first operation state, in which operations by all functions of the information processing apparatus are possible, and a second operation state in which operations by some functions of the information processing apparatus are limited, and the data processing section that executes specific data processing, which does not involve the image processing by the image processing section, in a case where the operation control section performs control in the second operation state.

An image forming apparatus includes a first human body detector, a second human body detector, and a controller. The first human body detector has a first detection span to detect a human body to output a signal. The second human body detector has a second detection span to detect a human body to output a signal. The controller changes a state of the image forming apparatus from a standby state to an operation state in accordance with the output signal from each of the first human body detector and the second human body detector. A first center line of the first detection span intersects with a second center line of the second detection span at a portion where the first detection span and the second detection span overlap with each other in a planar view.

Various embodiments of the present disclosure provide techniques and mechanisms for improving user convenience by displaying the state of a battery of an image forming apparatus in more detail. In a case where the state of the battery is an abnormal state in which the battery is not chargeable, the image forming apparatus displays information indicating that the battery is in the abnormal state and information about a remaining capacity of the battery.

An image forming device is provided with a signal output unit which outputs an interrupt signal when storage of a print job input from the outside in a memory is completed, a processor which switches the operation mode to a normal mode when an operation mode of the own device is a power saving mode when an interrupt signal output from the signal output unit is input, executes each of the print jobs stored in the memory, and switches the operation mode to the power saving mode after the completion of printing, and a signal delay unit which can delay the input of the interrupt signal output from the signal output unit to the processor when the operation mode is the power saving mode.

An information processing apparatus includes a memory storing identification information on the information processing apparatus and a processor configured to: generate a code image including the identification information and cause a display to display the code image; detect a communication content from a terminal apparatus and, if the communication content includes the identification information on the information processing apparatus, make a connect request to the terminal apparatus as a transmission source of the communication content via a communication unit that performs wireless communication; and perform control to establish a connection to the terminal apparatus.

An image forming apparatus includes a control device. The control device acts, when a built-in processor executes a control program, as a decider that decides whether the image forming apparatus has been used for business, depending on whether the terminal device that has requested a job to the image forming apparatus, or is to receive an output from the image forming apparatus, is registered in advance as a device for business use, or a device for private use, a used time detector that detects a time decided by the decider to have been used for business by the image forming apparatus, with respect to each of operation modes, and a transmitter that transmits information indicating the time used for business, with respect to each of the operation modes, detected by the used time detector, to a management computer installed in an office, through a network I/F.