Provided is an image reading apparatus including: an image reading unit configured to output image data representing an image read from an original; and an image control board configured to acquire the image data by controlling an operation of the image reading unit. When a shading error occurs, the image control board determines a part that has caused the shading error by determining whether or not a power supply voltage is being normally supplied to the image reading unit, determining whether or not a light source is normally emitting light, determining whether or not a memory is normally operating, and determining whether or not data output from the image reading unit is normally stored in the memory.

An apparatus that executes a job, broadcasts a wireless signal prior to establishing a connection by wireless communication with an external apparatus. The wireless signal includes information relating to the apparatus, by which it can be identified whether execution of a job by the apparatus is possible, in a predetermined packet.

A power converter includes a first circuit including an inductor and configured to convert an input voltage into a first voltage, a second circuit including a transformer and configured to convert the first voltage input to the insulating transformer to a second voltage, a control circuit configured to control the first circuit, a first power supply circuit including a first winding magnetically coupled to the inductor and configured to output a third voltage generated by the first winding to the first control circuit, and a second power supply circuit including a second winding magnetically coupled to the transformer and configured to output a fourth voltage generated by the second winding to the first control circuit. When the second voltage is not output the third voltage is output to the control circuit, and when the second voltage is output the fourth voltage is output to the control circuit.

An apparatus that executes a job, broadcasts a wireless signal prior to establishing a connection by wireless communication with an external apparatus. The wireless signal includes information relating to the apparatus, by which it can be identified whether execution of a job by the apparatus is possible, in a predetermined packet.

Provided is an image reading apparatus including: an image reading unit configured to output image data representing an image read from an original; and an image control board configured to acquire the image data by controlling an operation of the image reading unit. When a shading error occurs, the image control board determines a part that has caused the shading error by determining whether or not a power supply voltage is being normally supplied to the image reading unit, determining whether or not a light source is normally emitting light, determining whether or not a memory is normally operating, and determining whether or not data output from the image reading unit is normally stored in the memory.

An information processing apparatus which is capable of preventing unintended power abnormality data arising from remaining electronic charge being written into a nonvolatile memory. The nonvolatile memory stores information indicating that an output voltage of the power supply device has become equal to or lower than a threshold value. Power is controlled to be supplied from a power supply device to a processor in accordance with an operation on a power switch received in a state where no power was supplied to the processor, and power is controlled to be supplied from the power supply device to the processor in accordance with the information stored in the nonvolatile memory. Writing of the information into the nonvolatile memory is enabled in accordance with input of a predetermined signal output from the processor to which the power is supplied.

In one example in accordance with the present disclosure, a remote printer control device is described. The remote printer control device includes a power supply and a power interface. The power interface provides power from the power supply to the printer when an operational power supply for the printer is disengaged. A controller of the remote printer control device interfaces with, and controls, the printer when the operational power supply for the printer is disengaged.

A printing apparatus receives power from a commercial power supply, a power control unit can control the power supplied when the printing apparatus is powered from the commercial power supply, a storage unit can continuously store information even when power from the commercial power supply to the printing apparatus is interrupted, and based on a user operation received during such an interruption the information stored in the storage unit is switched between information indicating that an instruction to supply power is valid and information indicating that an instruction to stop power supply is valid.

The purpose of the present invention is to reduce the number of components of an external device to reduce the cost of the external device. The electronic device according to the present technique is provided with: a battery installed unit in which a secondary battery is installed; a charging unit for charging the secondary battery on the basis of an external input power; and a connection unit for electrically connecting an external device in which a secondary battery is installed. The secondary battery installed in the external device is charged by means of the charging unit via the connection unit.

A mobile device includes a first processor, a second processor having a smaller power consumption than the first processor, and a first battery capable of supplying power to the first processor and the second processor, in which a distance between the first processor and an attachable/detachable second battery that is capable of being attached and detached and that is capable of configured to supplying power to the first processor and the second processor is longer than a distance between the second processor and the second battery.