Head Mounted Display Eye-Tracking Static Object Placement
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Solution Overview
Problem
Head-mounted displays for virtual reality and augmented reality often cause cybersickness due to the conflict between visual and somatosensory sensations, as the semicircular canal system does not sense actual movement, leading to mismatches in sensory inputs.
Innovation Solution
The head-mounted display employs eye-tracking technology to determine the user's gazing direction and sets static objects within the display frame, deciding whether to display or hide them based on the angle between the gazing direction and the object's position, thereby reducing the likelihood of cybersickness by aligning visual and vestibular signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If virtual reality/augmented reality display effects are provided to create a feeling of speed of moving in space, then visual immersion is improved, but cybersickness phenomenon occurs due to conflict between visual and somatosensory sensations
Solution Approach 1:
The patent applies local quality by placing static objects at specific positions within the display frame that correspond to the periphery of the user's field of view. These static objects are positioned locally in the visual field to provide reference points that reduce cybersickness without disrupting the overall immersive virtual reality experience. The static objects are not uniformly distributed but strategically placed based on eye-tracking data to optimize their effect in specific local regions of the visual field.
Solution Approach 2:
The patent uses static objects as intermediary elements between the user's visual system and the virtual environment. These static objects serve as mediators that provide visual reference points to help the user's semicircular canal system reconcile the conflict between visual motion cues and vestibular sensations. The static objects act as intermediaries that bridge the gap between the moving visual scene and the stationary physical environment, reducing sensory mismatch.
2Ease of operation
If static objects are displayed within the display frame to reduce cybersickness, then comfort of use is improved, but immersive feeling may be compromised
Solution Approach 1:
The patent applies dynamics by making the display of static objects adaptive rather than static. The system dynamically adjusts which static objects are displayed, their positions, and their visibility based on real-time eye-tracking data. As the user's gaze moves, the static objects are dynamically repositioned or hidden to ensure they remain in the periphery of the field of view, maintaining immersion while continuously providing comfort benefits. This dynamic adaptation allows the system to optimize both comfort and immersion based on the user's current viewing state.
Solution Approach 2:
The patent uses parameter changes by modifying the display parameters of static objects based on eye-tracking information. The system changes parameters such as the position, visibility, and timing of static object display according to the user's gazing direction and field of view. By dynamically adjusting these parameters, the system ensures that static objects are displayed only when they serve their comfort function without compromising the immersive experience, thus resolving the contradiction between comfort and immersion.
3Measurement precision
If eye-tracking operation is activated to determine gazing direction for controlling static objects, then accuracy of static object placement is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by implementing an eye-tracking device that serves multiple functions within the head-mounted display system. The eye-tracking device not only determines gazing direction for static object placement but also provides data for adjusting other display parameters, tracking user interaction, and optimizing the overall user experience. By making the eye-tracking device multi-functional, the patent reduces the need for separate specialized components, thereby managing device complexity while maintaining high measurement precision for gazing direction.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces the occurrence of cybersickness while maintaining an immersive experience by ensuring that static objects are displayed outside the user's primary field of view, minimizing inconsistencies between visual and vestibular inputs.
Implementation Method 1
An eye-tracking operation is activated to obtain a gazing direction of a user
Data Source
AI summary
A head mounted display and a control method thereof are provided. The control method includes the following. An eye-tracking operation is activated to obtain a gazing direction of a user. At least one setting position is set on a display frame, and the at least one setting position serves to set at least one static object. Whether to display or hide the static object is determined according to the setting position and the gazing direction.