Head-Mounted Display Synchronization Across Multiple Vehicles
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Solution Overview
Problem
Existing technologies fail to effectively coordinate the operation of multiple display devices worn by vehicle occupants in different vehicles, limiting shared and synchronized virtual experiences.
Innovation Solution
A method and system that synchronizes the virtual environments displayed on head-mounted display devices by continuously transmitting data on the relative arrangement and movements of vehicle occupants, allowing coordinated virtual experiences regardless of their vehicle location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple display devices are used in different vehicles, then the versatility and shared experience capability are improved, but the coordination and synchronization between devices become more complex
Solution Approach 1:
A central server acts as an intermediary to coordinate multiple display devices across different vehicles. The server receives data from sensors in each vehicle, processes the relative position and orientation information, and distributes synchronized virtual environment data to all connected display devices, thereby managing coordination complexity centrally rather than requiring direct peer-to-peer communication between devices
Solution Approach 2:
The system employs a universal communication protocol and data format that enables different display devices in various vehicles to interact through a common interface. This universal approach allows the system to handle multiple vehicles and display devices simultaneously with consistent coordination rules, improving versatility without proportionally increasing complexity
2Measurement precision
If real-time data transmission is implemented for relative arrangement, then the synchronization accuracy is improved, but the data transmission requirements and system load increase
Solution Approach 1:
The system extracts only the essential data elements needed for synchronization - specifically relative position and orientation information from sensors - rather than transmitting complete sensor datasets. By selecting and transmitting only the critical parameters required for virtual environment alignment, the system maintains high synchronization accuracy while minimizing data transmission volume
Solution Approach 2:
The system transforms raw sensor data into processed relative position and orientation parameters that are optimized for transmission. By changing the data representation from raw sensor readings to processed spatial parameters, the system achieves the required measurement precision with reduced data quantities suitable for efficient network transmission
3Stability of the object's composition
If continuous synchronization is maintained across multiple vehicles, then the virtual experience coherence is improved, but the energy consumption and computational resources increase
Solution Approach 1:
Instead of continuous real-time synchronization, the system implements periodic updates at optimized intervals. The central server periodically collects data from vehicles and redistributes synchronized content to display devices at intervals that maintain virtual environment coherence while allowing the system to enter lower-power states between updates, thereby reducing overall energy consumption
Solution Approach 2:
The system performs preliminary processing and packaging of virtual environment data on the server side before transmission to display devices. By pre-processing and organizing synchronization data in advance, the system reduces the computational burden on individual display devices and enables more efficient energy utilization during reception and rendering phases
Data Source
Figure 1~2
AI summary
The invention relates to a method for operating at least two display devices (4, 5) carried by respective vehicle occupants (2, 3) on the head, in which respective virtual environments are reproduced by means of the display devices (4, 5), wherein in the meantime, a relative arrangement of characterizing data of the vehicle occupants (2, 3) to one another is continuously transmitted to the display devices (4, 5), and the virtual environments are reproduced as a function of said data. The invention further relates to a system (6) for operating at least two display devices (4, 5) carried on the head by respective vehicle occupants (2, 3).