Abstract: A learning system which is capable of easily collecting data of affected parts having completely recovered, as training data. When it is determined that an affected part has completely recovered based on affected-part image data generated by shooting the affected part, image data accompanied with the same affected part ID as that of the affected-part image data is identified from among image data set stored in a storage device of the learning system. The actual number of days to a complete recovery of the affected part is calculated from shooting dates of the identified image data and the affected-part image data, and is added to the affected-part image data. The affected-part image data accompanied with the actual number of days to the complete recovery is used as training data to create a trained model that predicts the number of days to a complete recovery of the affected part.

Abstract: A display apparatus switches to any one of a plurality of modes, generates a partial image, and controls a luminance of a black region. The plurality of modes includes a first mode capable of displaying an image of a first dynamic range on a display unit and a second mode capable of displaying an image of a second dynamic range wider than the first dynamic range on a display unit. The partial image includes at least a black region and is superimposed on an image displayed on the display unit. Controlling includes controlling a luminance of the black region of the partial image in the second mode to be less than a luminance of the black region of the partial image in the first mode.

Abstract: A display apparatus switches to any one of a plurality of modes, generates a partial image, and controls a luminance of a black region. The plurality of modes includes a first mode capable of displaying an image of a first dynamic range on a display unit and a second mode capable of displaying an image of a second dynamic range wider than the first dynamic range on a display unit. The partial image includes at least a black region and is superimposed on an image displayed on the display unit. Controlling includes controlling a luminance of the black region of the partial image in the second mode to be less than a luminance of the black region of the partial image in the first mode.

Abstract: An electronic apparatus includes a line-of-sight detection unit that detects a viewed position on a display unit, a display control unit that displays a predetermined display item on the display unit in a case where the viewed position on an edge area of an image displayed on the display unit is detected, and a control unit that controls execution of processing corresponding to the display item in a case where a first predetermined condition is satisfied in a state where the viewed position on the display item is detected.

Abstract: An electronic device includes a charging unit that charges a battery using power from an external power source, an authentication unit that performs authentication to determine whether the battery is a predetermined battery, a detection unit that detects a voltage of the battery, and a control unit that causes the charging unit to charge the battery with a current not more than a first current value until the voltage of the battery reaches a first predetermined value and causes the authentication unit to operate on power from the battery when the voltage of the battery reaches the first predetermined value. When the voltage of the battery has reached the first predetermined value, the control unit causes the authentication unit to authenticate the battery.

Abstract: An electronic apparatus connected to an external apparatus through a communication terminal includes a control unit, a communication unit, and a detection unit. The control unit controls a direct current (DC) voltage level of the communication terminal. The communication unit makes communication with the external apparatus by superimposing a waveform on the DC voltage level of the communication terminal controlled by the control unit. The detection unit detects a state of the electronic apparatus. The control unit controls the DC voltage level of the communication terminal to a DC voltage level depending on the state of the electronic apparatus detected by the detection unit.

Abstract: An image pickup apparatus which is capable of reducing erroneous shooting when a third party other than a photographer has come within the field of view. A first detection unit detects a subject from first image data obtained as a result of shooting by a first image pickup unit. A second detection unit detects a subject from second image data obtained as a result of shooting by a second image pickup unit. When the first detection unit detects, from the first image data, the subject detected by the second detection unit, a shooting process is carried out in which a shooting operation is performed using the first image pickup unit, and image data obtained by the shooting operation is recorded.

Abstract: An electronic device includes a charging unit that charges a battery using power from an external power source, an authentication unit that performs authentication to determine whether the battery is a predetermined battery, a detection unit that detects a voltage of the battery, and a control unit that causes the charging unit to charge the battery with a current not more than a first current value until the voltage of the battery reaches a first predetermined value and causes the authentication unit to operate on power from the battery when the voltage of the battery reaches the first predetermined value. When the voltage of the battery has reached the first predetermined value, the control unit causes the authentication unit to authenticate the battery.

Abstract: An image pickup apparatus which is capable of reducing erroneous shooting when a third party other than a photographer has come within the field of view. A first detection unit detects a subject from first image data obtained as a result of shooting by a first image pickup unit. A second detection unit detects a subject from second image data obtained as a result of shooting by a second image pickup unit. When the first detection unit detects, from the first image data, the subject detected by the second detection unit, a shooting process is carried out in which a shooting operation is performed using the first image pickup unit, and image data obtained by the shooting operation is recorded.