Handle Controller Optical Tracking via Light-Emitting Marks
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Solution Overview
Problem
Existing handle controllers using electromagnetic and ultrasonic sensors are limited in performance due to interference from complex electromagnetic signals in the environment, leading to erroneous tracking data and restricted usage.
Innovation Solution
A handle controller with a light-emitting unit featuring first and second light-emitting marks that illuminate for specific periods, captured by an imaging device to calculate position and attitude information in real time, unaffected by electromagnetic and ultrasonic signals, and including a wireless transmission module and sensor for enhanced tracking stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electromagnetic sensors are used for tracking, then real-time position and attitude information can be obtained, but the tracking performance degrades due to interference from complex electromagnetic signals in the environment
Solution Approach 1:
The patent replaces electromagnetic sensing with optical sensing. Instead of using electromagnetic sensors that are susceptible to electromagnetic interference, the system uses light-emitting marks and imaging devices (cameras) to achieve tracking. This substitution of the sensing mechanism eliminates the interference problem while maintaining real-time tracking capability.
Solution Approach 2:
The patent introduces light-emitting marks as an intermediary medium for tracking. These marks emit or reflect light to create visible patterns that can be captured by imaging devices, serving as a mediator between the handle controller and the tracking system, thereby avoiding direct electromagnetic signal interference.
2Measurement precision
If ultrasonic sensors are used for tracking, then real-time position and attitude information can be obtained, but the tracking performance degrades due to interference from ultrasonic signals in the environment
Solution Approach 1:
The patent replaces ultrasonic sensing with optical sensing. Instead of using ultrasonic sensors that are susceptible to ultrasonic interference, the system uses light-emitting marks and imaging devices (cameras) to achieve tracking. This substitution of the sensing mechanism eliminates the interference problem while maintaining real-time tracking capability.
3Productivity
If electromagnetic or ultrasonic tracking is used, then real-time tracking can be achieved, but the usage is greatly limited due to environmental signal interference
Solution Approach 1:
The patent replaces electromagnetic and ultrasonic tracking systems with an optical tracking system using light-emitting marks and imaging devices. This substitution enables the system to operate in diverse environments without being affected by electromagnetic or ultrasonic interference, significantly improving environmental adaptability while maintaining real-time tracking performance.
Solution Approach 2:
The patent creates a universal tracking solution that works across different environments by using optical signals instead of electromagnetic or ultrasonic signals. The light-emitting marks can be captured by standard imaging devices, making the system adaptable to various应用场景 (VR, AR, MR) without being constrained by environmental signal interference.
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 accurate and stable real-time tracking of the handle controller's position and attitude in three-dimensional space, unaffected by environmental signals, allowing for wider application in VR, AR, and MR interactions.
Implementation Method 1
a light-emitting unit, the light-emitting unit being provided at an end of the handle body and forming a preset angle with the handle body; the light-emitting unit includes a first surface, a second surface, a plurality of first light-emitting marks and a plurality of second light-emitting marks
Data Source
AI summary
Disclosed is a handle controller which includes a handle body and a light-emitting unit, the light-emitting unit being provided at an end of the handle body and forming a preset angle with the handle body; the light-emitting unit includes a first surface, a second surface, a plurality of first light-emitting marks and a plurality of second light-emitting marks, the second surface covering the first surface; the first light-emitting marks and the second light-emitting marks are both provided on the first surface, and the plurality of first light-emitting marks are distributed annularly; the first light-emitting marks and the second light-emitting marks are configured to illuminate so as to be captured by an imaging device; the first light-emitting marks illuminate for a first period, and the second light-emitting marks illuminate for a second period.