UWB Multi-Antenna 6DoF Tracking for AR/VR Controllers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing augmented reality (AR) and virtual reality (VR) systems face challenges in accurately tracking the movement of controller devices, especially in environments with changing light conditions, outdoor IR interference, and bright indoor settings, which can lead to disrupted tracking and low recognition rates.
Innovation Solution
The implementation of an electronic device equipped with an ultra-wide band (UWB) communication module and multiple antennas, which measures coordinates of external devices and generates coordinate systems to track the movement of HMD devices and controller devices, thereby enhancing tracking accuracy across various environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cameras or sensors are used for tracking controller device movement, then the system can provide virtual space experience, but the tracking accuracy deteriorates in environments with changing light conditions, outdoor IR interference, or bright indoor settings
Solution Approach 1:
The patent replaces optical-based tracking systems (cameras and sensors) with UWB (Ultra-Wideband) radio frequency-based tracking. This substitution eliminates dependence on visual conditions, allowing accurate controller device tracking regardless of lighting environments, outdoor IR interference, or bright indoor settings. The UWB system uses electromagnetic wave propagation characteristics rather than optical detection, fundamentally resolving the environmental sensitivity issue.
2Reliability
If cameras or sensors are used for tracking, then the system can function in controlled environments, but the tracking reliability deteriorates when the controller device moves out of photographing or sensing ranges
Solution Approach 1:
The patent implements a universal tracking system using UWB technology that functions consistently across all spatial ranges and environmental conditions. The UWB-based tracking replaces the limited-range optical tracking, providing continuous and reliable controller device position information whether the device is within or outside the original photographing/sensing ranges. This multi-functional approach ensures tracking continuity throughout the entire virtual space.
3Area of stationary object
If multiple cameras or sensors are deployed to expand tracking range, then the tracking coverage increases, but the device complexity and cost increase
Solution Approach 1:
The patent replaces the complex multi-camera or multi-sensor optical tracking system with a simpler UWB-based tracking system. Instead of deploying multiple optical devices to expand coverage, the UWB system achieves comprehensive tracking coverage through its inherent ability to detect controller devices throughout the entire virtual space using radio frequency signals, thereby reducing system complexity while maintaining or expanding tracking coverage.
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 enables robust and accurate tracking of controller devices in diverse environments, including those with challenging lighting conditions, by utilizing UWB technology and multiple antennas to maintain continuous signal transmission and reception, thus supporting 6 degrees of freedom (6DoF) implementation.
Implementation Method 1
ultra-wide band (UWB) communication module including a plurality of antennas... measures a first coordinate of a first external device and a second coordinate of a second external device generated based on signals received from the first external device and the second external device
Data Source
AI summary
An electronic device according to an embodiment includes: an ultra-wide band (UWB) communication module including a plurality of antennas, and a processor operatively connected to the UWB communication module, wherein the processor is configured to: measure a first coordinate of a first external device and a second coordinate of a second external device generated based on signals received from the first external device and the second external device using the plurality of antennas, generate a first coordinate system based on the electronic device corresponding to the measured first coordinate and second coordinate, and regenerate a second coordinate system through reconfiguration of the first coordinate system based on the first external device.