Head-worn Display Boundary Awareness via Inside-out Tracking
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Solution Overview
Problem
Existing immersive technologies in vehicles, such as virtual-reality and augmented-reality systems, fail to effectively convey the physical boundaries of a vehicle to users, leading to potential motion sickness and collisions, especially as they vary by vehicle type and require costly solutions for accurate environment representation.
Innovation Solution
An electronic display device wearable on the head uses an acquisition device for inside-out tracking to adapt the virtual perspective based on relative movement and acquire the vehicle interior's contour, displaying a virtual contour that corresponds to the real one, thereby providing awareness of physical limits without precise visual replication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If virtual-reality glasses are used in vehicles to provide immersive entertainment, then user entertainment and relaxation are improved, but users lose awareness of physical vehicle boundaries leading to potential collisions and motion sickness
Solution Approach 1:
The patent introduces a boundary indication system as an intermediary between the virtual reality content and the user. This system projects visual indicators (such as floor grids, wall outlines, or distance markers) into the virtual environment that correspond to actual vehicle boundaries. These indicators serve as a mediator that maintains spatial orientation without breaking immersion, allowing users to perceive both virtual content and physical limits simultaneously.
Solution Approach 2:
The patent adds a new dimension of spatial information by overlaying boundary indicators in the virtual space that map to physical reality. Instead of relying solely on the user's natural spatial perception, the system creates a second layer of visual information (the boundary indicators) that exists in the same virtual dimension as the entertainment content, thereby providing boundary awareness without exiting the immersive experience.
2Reliability
If the vehicle interior contour is precisely acquired and displayed to indicate boundaries, then boundary awareness is improved, but system complexity and cost increase
Solution Approach 1:
The patent creates a simplified copy or representation of the vehicle interior boundaries rather than requiring a complete, precise 3D model. The boundary indication system uses simplified geometric shapes, lines, or markers that replicate only the essential boundary information needed for safety. This copying approach provides sufficient boundary awareness while avoiding the complexity of capturing and rendering the entire vehicle interior in detail.
Solution Approach 2:
The patent employs cost-effective boundary representation methods such as projected light patterns, simple graphical overlays, or basic haptic feedback signals rather than expensive sophisticated sensing and rendering systems. These simplified boundary indicators achieve the essential safety function without requiring high-cost hardware or complex processing, making the solution economically viable for vehicle integration.
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 method allows users to recognize and avoid vehicle boundaries reliably, preventing collisions and motion sickness, while being cost-effective and adaptable to various vehicle models, enhancing immersion and safety during use.
Implementation Method 1
The acquisition device arranged on the electronic display device performs so-called inside-out tracking. In inside-out tracking, the acquisition of movements of the electronic display device is performed in that the acquisition device is attached to the electronic display device itself. The acquisition device is designed to acquire an environment of the electronic display device wearable on the head and thus to infer movements of the electronic display device in relation to the environment
Implementation Method 2
a contour of the vehicle interior is acquired by the acquisition device and a virtual contour corresponding to the contour of the vehicle interior is displayed. The acquisition device attached to the electronic display device makes it possible to recognize geometries and/or structures of the vehicle interior
Data Source
AI summary
Relative movement, in relation to a vehicle interior, of an electronic display device worn on the head is ascertained by an acquisition device arranged on the electronic display device. A virtual perspective of a wearer of the electronic display device, located in the vehicle interior, of displayed virtual content is adapted in accordance with the ascertained relative movement. In addition, a contour of the vehicle interior is acquired by the acquisition device and a virtual contour corresponding to the contour of the vehicle interior is displayed.