mmWave and Camera Position Tracking Under Low-Light VR/AR Constraints
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Solution Overview
Problem
The weight and battery life of wearable electronic devices for VR and AR are compromised due to the inclusion of multiple cameras for position tracking, and illuminance issues hinder effective tracking in certain environments.
Innovation Solution
Incorporating an antenna module for wireless communication alongside cameras to enhance position tracking, using mmWave antennas and adjusting tracking methods based on illuminance and feature points to optimize device performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple cameras are mounted for position tracking, then position tracking capability is improved, but device weight increases
Solution Approach 1:
The patent combines multiple cameras into a single integrated camera module that performs position tracking functions. Instead of mounting separate cameras for different tracking purposes, the invention integrates these functions into one unified camera system, reducing the overall number of components and device weight while maintaining position tracking capability.
Solution Approach 2:
The patent makes the camera module multi-functional by enabling it to perform both position tracking and environmental imaging tasks. The same camera hardware is used for multiple purposes: tracking the user's position in VR/AR space and capturing images of the peripheral environment, thereby eliminating the need for separate dedicated tracking cameras.
2Measurement precision
If multiple cameras are mounted for position tracking, then position tracking capability is improved, but battery consumption increases
Solution Approach 1:
The patent merges the operational loads of multiple cameras into a single camera module, thereby consolidating the power consumption into one component. This reduces the total energy required for position tracking operations compared to running multiple separate cameras simultaneously.
Solution Approach 2:
The camera module is designed to serve multiple functions (position tracking and environmental imaging), which allows the system to use one camera instead of multiple dedicated cameras. This multi-functionality reduces the cumulative battery consumption that would result from operating several separate camera systems.
3Measurement precision
If camera-based position tracking is used, then tracking precision is improved, but tracking reliability deteriorates in dark or monochromic environments
Solution Approach 1:
The patent introduces an antenna module as an intermediary system that works in conjunction with the camera. The antenna module provides alternative position tracking capabilities using wireless signal analysis, which can operate independently of lighting conditions. This intermediary system ensures tracking reliability in environments where camera-based tracking would fail.
Solution Approach 2:
The patent changes the operating parameters of the camera system by adjusting illuminance thresholds and switching between different tracking modes. When illuminance falls below a threshold or the environment is detected as monochromic, the system transitions from camera-based tracking to antenna-based tracking, thereby maintaining reliability across varying environmental conditions.
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
Improves user immersion by reducing device weight and extending battery life while ensuring effective position tracking in various lighting conditions.
Implementation Method 1
an antenna module 120 for transmitting or receiving a signal to or from the outside
Implementation Method 2
when a communication state through the first antenna module 810-1 is not satisfactory, communicate with the external device 902 by using the first antenna module 810-1 and a second antenna module 810-2 among the at least one mmWave antenna module 410
Data Source
Figure 1A~1B
Figure 2~3
Figure 4A~4B
AI summary
Various embodiments disclose an electronic device including a camera, at least one mmWave antenna module, and at least one processor, wherein the at least one processor is configured to: acquire image information of a surrounding environment via the camera; acquire signal information resulting from a signal emitted from the at least one mmWave antenna module by the surrounding environment; and track a position of the user, based on at least one of the image information acquired via the camera and the signal information acquired via the at least one mmWave antenna module. Various other embodiments derived from the specification are possible.