Patent ID: 11949981
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A display device comprising at least one memory and at least one processor which function as:
an image acquiring unit configured to acquire time series images;
an image processing unit configured to process the images acquired by the image acquiring unit;
a display control unit configured to perform control so that a processed image processed by the image processing unit is displayed on a display;
a detecting unit configured to detect a closed state of an eyelid of a user;
a control unit configured to start power saving processing to reduce power consumption of the image processing unit or the display, in response to the detection of the closed state of the eyelid by the detecting unit, and instruct restart of processing that was being performed before the power saving processing, in the image processing unit or the display, at a timing when a specific predetermined time period has elapsed since the time of the detection of the closed state of the eyelid; and
a blinking time measuring unit configured to measure a blinking time duration of the user, a blinking time duration of the user used for calculating the specific predetermined time period,
wherein
the blinking time measuring unit measures a blinking time duration of the user for each of a plurality of types of blinking,
the blinking time measuring unit determines a type of blinking from among the plurality of types of blinking, based on whether a sudden change in brightness or sound is detected in an immediately preceding or neighboring frame of a frame where the closed state of the eyelid is detected, and
the blinking time duration of the user used for calculating the specific predetermined time period is based on the blinking time duration corresponding to the determined type of the blinking.