Heads-Up Display Imagery Compensation for Terrain Alignment
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Solution Overview
Problem
Existing head-mounted displays cause eye strain, sickness, and mental fatigue due to mismatch between the display and the natural horizon, requiring users to remain still to comfortably read the information.
Innovation Solution
A system that aligns the heads-up display with the surrounding terrain by defining buffer regions and using motion tracking elements to adjust the display's orientation and position, ensuring text remains anchored to the horizon during small movements and allowing it to drift back to a default location during larger movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the heads-up display is fixed relative to the user's head, then the display information is always visible to the user, but the display appears crocked and bounces relative to the environment causing eye strain and cognitive fatigue
Solution Approach 1:
The patent implements dynamic adjustment of the heads-up display orientation based on real-time detection of user head movements. The system continuously monitors head position changes and automatically adjusts the display angle to maintain alignment with the natural horizon, transforming the static display into a dynamic one that adapts to user movements. This resolves the contradiction by allowing the display to remain visible while eliminating the visual distortion that causes eye strain.
Solution Approach 2:
The system employs sensors to detect head movement and feeds this information back to the display control mechanism. The feedback loop continuously monitors the discrepancy between the fixed display orientation and the user's actual head position, then makes real-time corrections to align the display with the natural horizon. This closed-loop control ensures the display remains both visible and visually comfortable without requiring user intervention.
2Stability of the object's composition
If the user remains still to read the display comfortably, then the display alignment is stable, but the overall usefulness of the system is reduced
Solution Approach 1:
The system transforms the static display orientation into a dynamic one that automatically adapts to user movement. By continuously adjusting the display angle based on detected head movements, the system maintains stable alignment relative to the natural horizon even when the user is moving. This enables comfortable reading during movement without requiring the user to remain still, thereby improving usability while maintaining alignment stability.
Solution Approach 2:
The system performs automatic self-adjustment in response to user movement without requiring manual intervention. The sensors detect head position changes and the control mechanism automatically reorients the display to maintain proper alignment. This self-service capability allows the display to remain stable and readable during movement, eliminating the need for users to consciously adjust their position or the display.
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 solution reduces cognitive fatigue and eye strain by naturally aligning the display with the user's environment, enhancing usability and comfort during movement.
Implementation Method 1
An orientation element tracks the movement and/or orientation of the user's head and adjusts the useable region via corresponding movements within the buffer regions to align the useable region with the terrain. The orientation element may include a motion tracking camera, micro-electromechanical motion tracking device, etc.
Data Source
AI summary
A system for rendering a heads-up display element oriented to the surrounding terrain to alleviate cognitive fatigue and eye strain defines buffer regions around a useable region. An orientation element tracks the movement and/or orientation of the user's head and adjusts the useable region via corresponding movements within the buffer regions to align the useable region with the terrain. The orientation element may include a motion tracking camera, micro-electromechanical motion tracking device, etc. Text within the useable region is anchored to a relative location with respect to the horizon for small movements via small translations of the useable region within the buffer regions. For larger movements, the useable is allowed to drift outside the display area completely, and gradually dragged back to a default location according to some time function.