Head-Mounted Display Sleep Transition Using Video See-Through
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Solution Overview
Problem
Wearable devices like head-mounted displays can interfere with sleep onset due to vision and auditory stimulation, disrupting the user's ability to fall asleep or achieve deep sleep.
Innovation Solution
A head-mounted display device that gradually reduces external stimulation, such as visual and auditory effects, based on a predicted sleep onset time, transitioning from a full virtual reality mode to a video see-through mode with a real-world background, adjusting parameters like screen size, blue light, and sound volume to create a conducive sleep environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the HMD device provides vision stimulation through a display screen, then the user can enjoy virtual reality content, but the user's ability to fall asleep is interfered with
Solution Approach 1:
The display mode dynamically transitions from a full virtual reality screen to a video see-through mode showing the real-world environment, and finally to complete darkness. This dynamic adaptation allows the system to deliver VR content when needed while automatically transitioning to sleep-friendly modes when the user shows signs of drowsiness, thus resolving the contradiction between VR content delivery and sleep onset facilitation
Solution Approach 2:
The system changes multiple display parameters including brightness (reducing to zero), contrast, and visual content (from virtual scenes to real-world camera feed). These parameter changes enable the display to adapt from an engaging VR state to a non-stimulating dark state, eliminating sleep interference while maintaining VR functionality during active use
2Adaptability or versatility
If the HMD device provides auditory stimulation through speakers, then the user can experience immersive audio, but the user's ability to obtain deep sleep is disrupted
Solution Approach 1:
The audio output dynamically transitions from immersive VR audio content to ambient real-world sounds captured by microphones, and finally to complete silence. This dynamic audio adaptation ensures that immersive audio is provided during VR usage while automatically eliminating auditory stimulation during sleep onset, resolving the contradiction between immersive audio experience and deep sleep quality
Solution Approach 2:
The system adjusts audio parameters including volume (reducing to zero), audio content (from virtual audio to real-world ambient sounds), and spatial audio effects. These parameter changes enable the audio system to provide immersive experiences during VR usage while eliminating all auditory stimulation during sleep, thus resolving the contradiction
3Adaptability or versatility
If the display shows a full virtual screen, then the user experiences complete virtual immersion, but external stimulation cannot be minimized for sleep preparation
Solution Approach 1:
The display mode dynamically transitions from a full virtual reality screen occupying the entire field of view to a video see-through mode where the real-world environment is visible, and finally to complete darkness. This dynamic transition enables the system to provide full virtual immersion during active VR usage while automatically eliminating visual stimulation during sleep preparation, thus resolving the contradiction between virtual immersion and sleep-friendly external stimulation minimization
Data Source
AI summary
A method performed by a head mounted display (HMD) device includes: determining a sleep onset preparation start time; and displaying, on a display, a sleep onset preparation screen to which a visual effect is applied, from the sleep onset preparation start time, in a stepwise manner during a sleep onset preparation time interval, where the visual effect that is applied in the stepwise manner comprises a visual effect of switching a virtual screen output through an entire display area of the display to a video see through (VST) screen, where the VST screen displays the virtual screen with a non-virtual screen as a background in the entire display area of the display, where the non-virtual screen is based on an image captured through a front camera, and where the virtual screen is based on content executed by the HMD device.