Camera-Based Head-Mounted Pairing Without Physical Input

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Solution Overview

Problem

Existing head-mounted devices lack user-friendly input components, leading to complicated operations and poor user experience.

Innovation Solution

Incorporating a sensor assembly with an electrochromic device that adjusts light transmittance to shield or expose components like cameras and light-emitting units, along with a light quantity adjustment component to manage ambient light, enhancing user interaction and comfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If head-mounted device uses wireless communication to interact with mobile terminal, then user interaction capability is improved, but operation complexity increases due to lack of input components

Engineering Contradiction:

Improveinteraction capabilityVSAvoidoperation complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The head-mounted device automatically transmits its identity information via the first camera to the mobile terminal without requiring manual input from the user. The device initiates the connection process itself, allowing the user to simply wear the device and look at the mobile terminal screen to complete the interaction.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces traditional mechanical input components (buttons, switches, keyboards) with an optical communication system using cameras. The first camera on the head-mounted device and second camera on the mobile terminal substitute for physical input devices, enabling wireless identity transmission and connection establishment through optical signals.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Object-affected harmful factors

If electrochromic device adjusts light transmittance to shield components, then visual comfort is improved, but device complexity increases

Engineering Contradiction:

Improvevisual comfortVSAvoiddevice complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The electrochromic device changes its light transmittance parameter in response to detected light conditions. When the light quantity adjustment component detects excessive ambient light or when components need shielding, the electrochromic device adjusts its transmittance parameter to reduce light passage, thereby protecting the user's vision and shielding sensitive components.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The electrochromic device serves multiple functions: it acts as both a visual comfort control mechanism for the user and a protective shield for internal components like cameras and light-emitting units. This multi-functionality reduces the need for separate protective components, actually helping to manage overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Illumination intensity

If light quantity adjustment component manages ambient light, then visual content clarity is improved, but energy consumption increases

Engineering Contradiction:

Improvevisual content clarityVSAvoidpower consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The light quantity adjustment component operates periodically or on-demand based on detected light conditions rather than continuously. The component detects ambient light levels and only activates the electrochromic device when adjustment is needed, reducing unnecessary energy consumption while maintaining visual content clarity when required.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system uses a feedback mechanism where the light quantity adjustment component continuously monitors ambient light conditions and automatically adjusts the electrochromic device's transmittance accordingly. This closed-loop control ensures optimal visual content clarity while minimizing energy consumption by only adjusting when and when light conditions warrant intervention.

Inventive Principle:

Principle #23Feedback

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 experience by simplifying operations and optimizing light conditions for clearer visual content, reducing power consumption and eye strain.

Implementation Method 1

an electrochromic device 120 configured to change a light transmittance of the at least one component

Methodology Applied

Scientific EffectElectrochromism: Electrochromism

Data Source

PatentEP4016254B1Interactive method, head-mounted device, interactive system and storage medium

Publication Date: 2025.10.01 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

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AI summary

Provided are an interactive method, a head-mounted device (100), an interactive system (500), and a storage medium. The interactive method is applied in an interaction between the head-mounted device (100) and a mobile terminal (400). The head-mounted device (100) includes a first camera (310). The mobile terminal (400) includes a second camera (410). The interactive method includes: triggering the first camera (310) to transmit a connection request to the mobile terminal (400); and establishing a connection between the mobile terminal (400) and the head-mounted device (100) based on a consent request transmitted by the mobile terminal (400) via the second camera (410).