Multi-Device Spatial Anchor Synchronization in Mixed Reality
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Solution Overview
Problem
Current mixed reality technologies face challenges in synchronizing spatial coordinates between multiple devices in real-time, leading to poor user experience and insufficient precision, especially in high-demand applications like multiplayer games, due to dependence on external networks and complex synchronization processes.
Innovation Solution
A local multi-device fast spatial anchor point synchronization method is established by creating a local network, synchronizing time stamps, and using augmented reality picture tracking to calculate and adjust the spatial anchor points, enabling devices to share a unified coordinate system without relying on external networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external network synchronization is used for spatial coordinate synchronization between multiple devices, then devices can interact in real-time, but network delays reduce synchronization precision
Solution Approach 1:
The patent segments the synchronization system into local device coordinate systems that are independently established, rather than relying on a centralized external network system. Each device performs local coordinate calculations and transformations, reducing dependency on network communication for precision-critical operations.
Solution Approach 2:
The patent introduces a local coordinate transformation mechanism as an intermediary between devices. Instead of directly synchronizing coordinates over the network, devices use local coordinate systems and transformation matrices to reconcile positional differences, reducing the impact of network delays on synchronization precision.
2Measurement precision
If complex calibration boards and reference points are used to improve spatial synchronization accuracy, then coordinate system unification is achieved, but the synchronization process becomes complicated and speed decreases
Solution Approach 1:
The patent extracts the essential synchronization function from complex calibration procedures. Instead of using elaborate calibration boards and reference point systems, the invention focuses on extracting and utilizing device-intrinsic coordinate information and transformation relationships to achieve synchronization, simplifying the overall process.
Solution Approach 2:
The patent uses virtual coordinate transformations and mathematical models to replicate the effect of physical calibration processes. By copying the coordinate transformation relationships through computational methods rather than physical calibration artifacts, the system achieves similar precision with reduced complexity.
3Adaptability or versatility
If Internet Service Provider network is used for multi-device interaction, then devices can connect remotely, but synchronization precision deteriorates due to network conditions
Solution Approach 1:
The patent applies local quality by establishing device-specific local coordinate systems with high precision for each device individually. Each device maintains its own coordinate reference frame with accurate local measurements, while network connectivity provides only the necessary communication overhead, preserving local precision while enabling remote adaptability.
Data Source
AI summary
A local multi-device fast space anchor point synchronization method for mixed reality includes any device located in the local space serves as a host to create a local network, and other devices join the local network as a guest; the guest and the host first exchange their respective local timestamps, and then calculate the time offset between the guest's local timestamp and the host's local timestamp to achieve time synchronization between the guest and the host; on the basis of time synchronization, the guest in the local network synchronizes the spatial coordinate system with the host through augmented reality picture tracking technology. Other guest can synchronize the spatial coordinate system with the host or synchronized guest to realize the spatial coordinate system synchronization between all devices in the local network. The synchronization method provided by the present application can use multi-person mixed reality applications without an external operator network.