AR Anchor Device Dual Communication Spatial Positioning

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Solution Overview

Problem

Existing augmented reality technologies face errors in establishing anchors due to factors like angles, directions, light, surrounding environments, and algorithms when scanning physical anchors, which affect the accuracy of spatial modeling and virtual object placement.

Innovation Solution

A system and method using dual communication technologies (e.g., radio waves and ultrasonic) for anchor devices to transmit spatial information packets, allowing AR devices to determine the spatial relationship, including orientation, horizontal distance, and vertical height, by calculating time differences in packet reception and known propagation speeds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If physical anchors are scanned to establish spatial models, then virtual objects can be bound to anchors in augmented reality environment, but errors occur due to factors like angles, directions, light, surrounding environments, distances, and algorithms

Engineering Contradiction:

Improveanchor establishment accuracyVSAvoidspatial relationship measurement accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The patent introduces spatial information packets as an intermediary carrier that transmits anchor spatial data through dual communication technologies. These packets serve as a mediator between the anchor device and AR device, enabling accurate spatial relationship determination without direct environmental scanning that is prone to errors from light, angles, and surrounding conditions.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the optical scanning mechanism (camera-based physical anchor scanning) with an electromagnetic communication-based system. Instead of using light and visual algorithms to detect anchors, the system uses radio wave and ultrasonic communication to transmit spatial information packets, substituting a mechanical/optical system with an electromagnetic field-based system that is not affected by environmental lighting conditions.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If dual communication technologies are used to transmit spatial information packets, then accuracy of spatial relationship determination is improved, but device complexity increases

Engineering Contradiction:

Improvespatial relationship measurement accuracyVSAvoidcommunication system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the communication system into two distinct communication technology channels (radio wave and ultrasonic) that operate independently. Each channel transmits spatial information packets, and the system processes them separately to determine spatial relationships. This segmentation allows the system to use multiple communication modes without creating a monolithic complex system, as each channel can be implemented and maintained independently.

Inventive Principle:

Principle #1Segmentation

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 approach enhances the accuracy and reliability of anchor establishment in augmented reality environments, improving the precision of virtual object placement by accounting for various environmental and directional factors.

Implementation Method 1

transmits the first spatial information packet through a first communication technology and transmits the second spatial information packet through the second communication technology

Methodology Applied

Scientific EffectRadio wave propagation: Electromagnetic Propulsion

Implementation Method 2

The first communication technology and the second communication technology comprise radio waves and ultrasonic

Methodology Applied

Scientific EffectUltrasonic propagation: Ultrasound

Implementation Method 3

obtains a spatial relationship between the AR device and the anchor device according to the first spatial information packet and the second spatial information packet

Methodology Applied

Scientific EffectTime of flight measurement: Time of Flight

Data Source

PatentUS11528673B1Method and system for establishing anchors in augmented reality environment

Publication Date: 2022.12.13 SHENZHEN FULIAN FUGUI PRECISION INDUSTRY CO LTD

AI summary

A system and method for establishing anchors in an augmented reality environment activates an anchor device to continuously transmit a first spatial information packet and a second spatial information packet, the first and second packets being respectively sent through a first communication technology and a second communication technology. The first spatial information packet and the second spatial information contain an identification (ID) and an angle information of the anchor device. An augmented reality (AR) device receives the first spatial information packet and the second spatial information packet. The AR device further includes a processing unit. A spatial relationship between the AR device and the anchor device is obtained through the processing unit according to the first spatial information packet and the second spatial information packet. The spatial relationship includes a position of the anchor device relative to the AR device, and the horizontal and vertical distances therebetween.