Electronic device, electronic device controlling method, and computer program product

摘要

An 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.

主权项

1. An electronic device comprising:
a display configured to display various types of information; and a hardware processor communicatively coupled to the display and a camera, wherein the hardware processor is configured to: perform a user presence detection process to determine a presence of a user based on image data received from the camera while the user presence detection process is dominating access to the camera; when the display is put in a screen lock state, perform a user authentication process based on the image data received from the camera while the user presence detection process is dominating access to the camera; when the user is determined to be absent as a result of the user presence detection process performed while the user presence detection process is dominating access to the camera, turn off the display without putting the display in the screen lock state; and when, after turning off the display, the user is determined to be present as a result of the user presence detection process performed while the user presence detection process is dominating access to the camera, release the access to the camera by the user presence detection process, and put the display in the screen lock state before turning on the display so that the user authentication process dominates access to the camera, wherein the hardware processor is configured to put the display in the screen lock state when the screen lock setting is enabled in advance and the hardware processor is configured to determine the presence of the user at intervals of a predetermined time, while the display has not been put in the screen lock state.