Abstract: According to one embodiment, an electronic apparatus includes a housing, a display on a surface of the housing, an infrared sensor in a first region of the surface of the housing, the first region facing one side of the display, an indicator in the first region and configured to emit light, a first controller, and a second controller. The first controller turns on and off the display in accordance with a detection output of the infrared sensor. The second controller is configured to blink the indicator in a first blinking pattern in which a ratio of an ON time to a blinking cycle is smaller than that of an OFF time to the blinking cycle, when an event of which a user is notified occurs.

Abstract: According to one embodiment, an electronic device includes: a display controller; a user presence determination module; a reference elapsed time storage module; an interval time setting module; and a display controller. The display controller causes a display to display various types of information. The user presence determination module determines whether a user is present at a first time interval. The reference elapsed time storage module stores therein a second time for changing an operation mode to a power saving mode based on a time elapsed from when a user operation is ceased to be detected. The interval time setting module sets the first time interval shorter than the second time based on the second time stored in the reference elapsed time storage module. The display controller turns off the display if the user presence determination module determines that the user is absent.

Abstract: According to one embodiment, electronic device includes: display controller; user presence determination module; user authentication module; and controller. The user presence determination module determines presence of a user based on image data received from the camera while dominating access to a camera. The user authentication module dominates access to the camera, if the display is put in a screen lock state and to perform a user authentication based on the image data. The controller turns off the display if the user present determination module determines that the user is absent and while the display has not been put in the screen lock state, and to cause the user presence determination module to release the access to the camera and to put the display in the screen lock state before turning on the display if it is determined after the display is turned off that the user is present.

Abstract: According to one embodiment, an electronic apparatus includes: a presence determining module configured to determine at an interval whether a user is present based on image data output by a camera; a display power controller configured to turn on a display when the user is present and to turn off the display when the user is not present, based on a result of the presence determining module; and a detection interval controller configured to control the interval such that the interval is shorter when the display is off compared to when the display is on and the user is determined to be present.

Abstract: According to one embodiment, an information processing apparatus includes a plurality of interface ports, a device detector, and a power supply controller. The interface ports are configured to be supplied with power from the information processing apparatus and connected to a plurality of external devices. The device detector is configured to detect whether one of the external devices is connected to one of the interface ports. The power supply controller is configured to control whether to supply power to the one of the external devices connected to the one of the interface ports detected by the device detector based on power tolerance of the information processing apparatus, a total amount of power of external devices in use, and a power capacity of the one of the external devices.

Abstract: According to one embodiment, an information processing device includes a fingerprint sensor installed in the housing, a first and second indicator modules installed in the housing, a determination module configured to control the first indicator module to change indication patterns according to whether the fingerprint sensor is usable, and determine verification of an authentication entry upon detection of the authentication entry to the fingerprint sensor while the fingerprint sensor is usable, and a control module configured to control the second indicator module to change an indication pattern when the authentication entry has been verified by the determination module.