Head-Mounted Display Motion Compensation for Vestibulo-Ocular Reflex Dizziness

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Solution Overview

Problem

Users experience dizziness due to Vestibulo-Ocular Reflex (VOR) when using head-mounted displays and eyeglass-type displays that move in sync with the user's head, and this dizziness persists even after stopping the display, as the visual system adapts to the vibrating images, making it difficult to adapt back to normal environments.

Innovation Solution

An apparatus and method that sense motion and adjust the position of the content or background region in a direction opposite to the sensed motion, synchronizing the movement of the image region with the user's viewpoint to minimize VOR-induced dizziness, by using a motion sensing unit, display control unit, and display unit to adjust the position of the content and background regions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the display moves in sync with the user's head motion, then the user can view content in a mobile environment, but the user experiences dizziness due to VOR

Engineering Contradiction:

Improvemobile display capabilityVSAvoidVOR-induced dizziness

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies the inversion principle by moving the displayed image in the opposite direction to the user's head motion. When the user's head moves in a certain direction, the system detects this motion and moves the image content in the reverse direction, thereby counteracting the VOR effect that causes dizziness while maintaining mobile display functionality

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The system employs feedback by continuously detecting user head motion through motion sensors and dynamically adjusting the image position in real-time based on the detected motion. This closed-loop control allows the display to adapt to user movements while compensating for VOR-induced discomfort

Inventive Principle:

Principle #23Feedback

2Reliability

If the user gazes at vibrating images for a long period to adapt visual reactions, then VOR is suppressed and dizziness is reduced, but the user feels dizzy again when returning to normal environments

Engineering Contradiction:

ImproveVOR suppressionVSAvoidrebound dizziness

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary action by proactively compensating for head motion through image movement before the VOR effect can fully manifest. By continuously adjusting the image position in opposition to detected head motion, the system prevents VOR adaptation and subsequent rebound dizziness rather than allowing the user to adapt to vibrating images

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS7965298B2Apparatus, method, and medium for displaying content according to motion

Publication Date: 2011.06.21 SAMSUNG ELECTRONICS CO LTD

AI summary

Provided is an apparatus, a method, and a medium for displaying contents according to motions by identifying the direction of a sensed motion and moving the content region in a direction opposite to the identified direction or moving the background region in the identified direction. The apparatus including a motion sensing unit to sense a motion; a display control unit to adjust a position of an image region with reference to a direction of the sensed motion; and a display unit to display a content and a background according to the adjusted position, wherein the image region comprises a content region having the content and a background region having the background.