Portable 360-Degree VR Tracking System
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Solution Overview
Problem
Existing virtual reality tracking systems require complex equipment installations and additional power sources, making them difficult to use in home environments due to installation challenges and limited mobility.
Innovation Solution
A 360-degree tracking system comprising a scan device with a rotating light scanning module, a head-mounted display with multiple receivers, and a computing device that calculates user location based on angular velocity and time differences of the scanning light source, allowing for easy setup and calibration in various spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical positioning technologies use fixed light sources and light receivers on wall-mounted equipment, then positioning accuracy is improved, but installation complexity and power supply requirements increase
Solution Approach 1:
The system divides the light source function into multiple portable scan devices that can be distributed throughout the space, eliminating the need for a single complex wall-mounted light house. Each scan device independently emits scanning light that can be detected by receivers on the HMD, achieving positioning accuracy through distributed simple units rather than centralized complex equipment.
Solution Approach 2:
The patent replaces the mechanical wall-mounted installation system with a portable electronic scanning system. The light source is transformed from a static wall-mounted fixture into a dynamically scanning beam generated by rotating mirrors or prisms in handheld or portable devices, eliminating the need for structural wall mounting while maintaining positioning functionality.
2Reliability
If wall-mounted light houses and PhaseSpace cameras are used for tracking, then tracking capability is improved, but power supply requirements and installation difficulty increase
Solution Approach 1:
The scan device serves multiple functions: it acts as both the light source for positioning and the scanning mechanism for tracking. The same portable device that emits the scanning light beam also provides the temporal and spatial reference for tracking user movement, eliminating the need for separate wall-mounted cameras and light houses while maintaining reliable tracking capability.
Solution Approach 2:
The system transitions from static wall-mounted tracking equipment to dynamic portable scan devices that actively scan the environment. The scanning light beam moves through space in a controlled pattern, allowing the portable device to continuously update position and tracking information without requiring fixed installation points, thereby improving ease of operation while maintaining tracking reliability.
3Area of stationary object
If lighthouse or PhaseSpace camera installation angles and heights are calculated to cover sufficient tracking range, then tracking coverage is improved, but setup time and complexity increase
Solution Approach 1:
The patent adds the time dimension to the coverage problem by using temporal scanning instead of spatial expansion. Rather than expanding the coverage area by installing multiple wall-mounted units at different angles and heights, the system uses a single portable scan device that sequentially scans different areas over time, achieving comprehensive coverage through temporal multiplexing rather than spatial distribution.
Solution Approach 2:
The system changes the operational parameters of the light source from static emission at fixed angles to dynamic scanning with variable angular positions and frequencies. The scan device can adjust its scanning pattern, speed, and coverage area based on real-time requirements, allowing flexible adaptation to different spaces without time-consuming recalculation and reinstallation of fixed equipment.
4Measurement precision
If multiple wall-mounted equipment are installed for VR tracking, then tracking precision is improved, but number of power sources and equipment quantity increase
Solution Approach 1:
The patent merges the functions of multiple wall-mounted equipment (light source, scanner, tracker) into a single portable scan device. The same device that generates and emits the scanning light beam also contains the scanning mechanism and detection capabilities, consolidating what would traditionally require multiple separate wall-mounted units into one integrated portable unit, thereby reducing equipment quantity while maintaining tracking precision.
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
Enables efficient and accurate user tracking and positioning in 360 degrees without blind spots, simplifying installation and reducing the need for multiple power sources, making it suitable for home use and various environments.
Implementation Method 1
a first light scanning module, for generating a first scan light source, where the first light scanning module rotates in clockwise, in counterclockwise, or with fixed angle swing
Implementation Method 2
a head mounted displayer, comprising a plurality of receivers, for detecting the first scan light source, to generate information about the first scan light source
Data Source
AI summary
A tracking system for positioning a user's location comprise a scan device including a light scanning module for generating a scan light source, where the light scanning module includes a point light source, a prism, a reflector and a synchronization processing module, the prism rotates with a rotation speed, the synchronization processing module is used to control the reflector to rotate with an angle according to the rotation speed, so that the light emitted to the prism is reflected to a specific direction to form the scan light source, a head mounted displayer, which includes a plurality of receivers for detecting the scan light source, for generating information about the scan light source, and an computing device for calculating the location of the user based on the information.