Patent ID: 11971550
Assignee: MAXELL, LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 9:
10. An image transmissive head-mounted display device in which an external world image is acquired by a first camera, and the external world image is displayed on a display, the device comprising:
a second camera configured to acquire a binocular image of a wearer; and
a processor,
wherein the processor is configured to determine, from the binocular image of the wearer acquired by the second camera, that the wearer is awake when both eyes are closed for no longer than a predetermined period of time and that the wearer is asleep when both eyes are closed for a predetermined period of time or longer, and
wherein when the wearer sleeps from awakening, the processor switches display of the display to the external world image from an application image that has been displayed while the wearer is awake.