Wearable Device Virtual-to-Real Distance Mapping

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Solution Overview

Problem

Users of augmented reality (AR) and virtual reality (VR) technologies face challenges in accurately measuring distances and sizes of virtual objects in the real world, leading to mismatches and an inconsistent user experience.

Innovation Solution

A wearable device equipped with a processor that receives user instructions for virtual points, maps these to real-world points using an environment map, and determines the real distance between these points, thereby providing accurate measurements in the real world.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If virtual reality (VR) and augmented reality (AR) technologies are used to create immersive experiences, then user engagement and entertainment are improved, but the ability to accurately measure distances and sizes of virtual objects in the real world deteriorates

Engineering Contradiction:

Improveuser engagementVSAvoiddistance measurement accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent introduces an intermediary system consisting of a wearable device with processor, camera, and depth information processing capabilities. This intermediary bridges the virtual and real worlds by capturing images, processing depth information, and calculating real-world distances between virtual and real points, thereby resolving the measurement accuracy problem in immersive experiences

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces traditional mechanical measurement methods with a computational approach using image processing, depth information algorithms, and processor-based calculations. The system substitutes physical measurement tools with digital processing to determine real distances in the real world, improving measurement precision without physical contact

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If virtual elements are overlaid on the real world to enhance immersion, then the immersive experience is improved, but the consistency between virtual and real measurements deteriorates

Engineering Contradiction:

Improveimmersive experienceVSAvoidmeasurement consistency

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent changes the parameter representation from virtual coordinates to real-world coordinates by processing depth information and calculating transformation parameters. The system converts virtual point coordinates into corresponding real-world point coordinates, ensuring measurement consistency between virtual and real environments while maintaining immersive experience

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12309341B2Wearable device and control method thereof

Publication Date: 2025.05.20 HTC CORP

AI summary

A wearable device is provided. The wearable device includes a processor. The processor is configured to: receive a user instruction, wherein the user instruction comprises a first virtual point and a second virtual point in a virtual world; obtain a first real point and a second real point in a real world respectively based on the first virtual point and the second virtual point according to an environment map around the wearable device; and determine a real distance between the first real point and the second real point.