Headband Display for HMD Status Notifications

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Solution Overview

Problem

Existing head-mounted displays (HMDs) require users to put on the device to view status information, making it inconvenient for users and observers to obtain HMD status without disturbing the user.

Innovation Solution

Incorporating a display assembly within the retention band of the HMD, allowing visual status information to be displayed externally on the band, which can be dynamic and change based on the HMD's mode, providing status updates without needing the user to don the HMD.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the primary display is integrated into the HMD housing, then the user can view status information while wearing the device, but it becomes inconvenient for users and observers to obtain HMD status without disturbing the user or requiring the user to put on the device

Engineering Contradiction:

ImproveConvenience of obtaining HMD status informationVSAvoidTime required to put on HMD to view status

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The display function is segmented from the main HMD housing and placed on the retention band, allowing independent access to status information without requiring the user to wear the full HMD assembly

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The retention band serves as an intermediary carrier that displays status information externally, mediating between the HMD system and the user/observer without requiring direct interaction with the main device

Inventive Principle:

Principle #24Intermediary (Mediator)

2Loss of information

If the display assembly is integrated into the retention band, then status information can be displayed externally without disturbing the user, but the retention band structure becomes more complex

Engineering Contradiction:

ImproveAccessibility of HMD status informationVSAvoidComplexity of retention band structure

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The display assembly is merged with the retention band, combining the structural function of the band with the information display function into a single integrated component

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The retention band is given multiple functions: it retains the HMD on the user's head and simultaneously serves as a display medium for status information, increasing its utility without requiring a separate dedicated display structure

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of operation

If the display assembly is positioned within the retention band thickness, then the external display is achieved, but the retention band requires additional internal components and wiring

Engineering Contradiction:

ImproveConvenience of viewing status externallyVSAvoidInternal components within retention band

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The display assembly, including its components and wiring, is nested within the retention band structure, utilizing the band's internal volume to house the display elements without increasing the external profile significantly

Inventive Principle:

Principle #7Nested doll (Nesting)

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

Enables users and observers to conveniently obtain HMD status information without interrupting the user, enhancing usability and privacy by providing an external visual interface for status updates.

Implementation Method 1

The display assembly can include micro-light-emitting diodes

Methodology Applied

Scientific EffectLight-emitting diode: Light Emitting Diode

Implementation Method 2

The display assembly can include an optical fiber

Methodology Applied

Scientific EffectOptical fiber: Optical Fibre

Data Source

PatentUS12222514B1Notifications in headbands

Publication Date: 2025.02.11 APPLE INC

AI summary

A wearable electronic device includes a head-mounted display (HMD) and a retention band connected to the HMD. The retention band can include a display assembly positioned within the retention band for displaying visual information on an exterior of the retention band.