Electronic Device Hybrid Position Tracking With Camera And Antenna Modules
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Solution Overview
Problem
Existing VR and AR systems face challenges in tracking multiple users' positions in real-time, especially when users move out of the camera's detection range or are obscured, leading to limitations in the number of participants and potential delays in off-line communication.
Innovation Solution
An electronic device equipped with a camera and multiple antenna modules performs wireless communication to track user positions, using signal reflection and short-range communication to enhance position tracking accuracy and reduce heat and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the outside-in method is used for position tracking, then the position can be tracked within the detection region, but the tracking fails when a user leaves the detection region or is hidden by another user
Solution Approach 1:
The patent combines the outside-in method (camera-based position tracking) with the inside-out method (sensor-based self-tracking) to create a hybrid system. The camera tracks users within the detection region, while sensors continuously track user positions even when users leave the region or are obscured, ensuring uninterrupted position tracking and maintaining both accuracy and reliability.
Solution Approach 2:
The patent introduces a server as an intermediary that receives position information from multiple cameras and sensor data, processes this information, and provides comprehensive position tracking. The server mediates between the limited camera detection regions and the need for continuous tracking across the entire space, enabling reliable position tracking even when individual cameras cannot detect users.
2Quantity of substance
If the number of users in the same space increases, then more users can participate in multi-user content, but users are more likely to be hidden by each other, limiting effective tracking
Solution Approach 1:
The patent divides the tracking system into multiple segments: multiple cameras cover different detection regions, and each user is equipped with sensors. This segmentation allows the system to track multiple users simultaneously by combining data from multiple sources, preventing users from being hidden and maintaining tracking accuracy even as the number of users increases.
Solution Approach 2:
The patent creates a universal tracking system that uses both camera-based tracking and sensor-based tracking, which can adapt to different numbers of users and spatial configurations. The multi-functional approach allows the system to effectively track any number of users by switching between or combining tracking methods based on user density and spatial distribution.
3Measurement precision
If position information is acquired through cloud server communication, then off-line state execution is limited, but position tracking can be achieved
Solution Approach 1:
The patent implements preliminary action by having devices pre-acquire and store position information locally through sensors before needing it. This allows the device to have position data readily available without requiring real-time cloud server communication, reducing communication delays and enabling operation in off-line states while maintaining position tracking capability.
4Device complexity
If only camera-based tracking is used, then the system is simpler, but power consumption and heat generation increase due to continuous camera operation
Solution Approach 1:
The patent uses periodic action by having the camera operate intermittently rather than continuously, activating it only when needed for visual recognition tasks. Between camera activations, the system relies on sensor-based tracking to maintain position information, significantly reducing power consumption and heat generation while preserving the necessary tracking functionality.
Solution Approach 2:
The patent implements self-service by equipping each user device with sensors that automatically track and report position information without requiring constant camera observation. The sensors serve themselves by continuously monitoring position and transmitting this data, reducing the burden on the camera system and lowering overall power consumption while maintaining tracking capability.
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
The device efficiently tracks multiple users' positions, enabling seamless multi-user content experiences by combining camera and antenna-based methods, reducing delays and increasing immersion.
Implementation Method 1
acquire signal information by receiving signals resulting from reflection of signals transmitted from the plurality of antenna modules by a surrounding environment
Data Source
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AI summary
An embodiment according to the present disclosure provides an electronic device comprising: a camera; multiple antenna modules; a communication module for performing wireless communication by using signals; and at least one processor operatively connected to the camera, the multiple antenna modules, and the communication module. The at least one processor is configured to: acquire signal information by receiving signals resulting from reflection of signals transmitted from multiple antenna modules by peripheral environments; acquire the position of the electronic device on the basis of the acquired signal information; acquire image information regarding at least one external electronic device through the camera; acquire the position of at least one external electronic device at a first timepoint on the basis of the image information and the signal information; perform short-range communication with at least one external electronic device through a first antenna module adjacent to at least one external electronic device among the multiple antenna modules; and receive position information of at least one external electronic device at a second timepoint after the first timepoint from at least one external electronic device through short-range communication. Various other embodiments inferred from the present specification are also possible.