AR Display Control Device for Bystander Line of Sight Separation

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Solution Overview

Problem

Existing display control technologies for augmented reality (AR) and mixed reality (MR) glasses fail to effectively prevent confusion among bystanders by not adequately changing the display position of content in virtual space, leading to potential line of sight overlap between the user and nearby individuals.

Innovation Solution

A display control device equipped with a detection unit to monitor the orientation of nearby individuals, a determination unit to assess the need for content position changes, and a position changing unit to adjust the content's position in virtual space based on distance calculations, ensuring the user's line of sight does not overlap with nearby individuals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the position of content on the display is greatly changed to prevent line of sight overlap, then the confusion of nearby persons is prevented, but the user's face orientation changes greatly causing suspicious appearance

Engineering Contradiction:
Improveprevention of confusionVSAvoidnatural appearance
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent applies dynamics by making the content position adjustable and responsive to real-time detection of nearby persons' line of sight. The content position dynamically changes based on detected orientations, allowing the system to adapt between preventing confusion and maintaining natural appearance based on current conditions

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of content position in virtual space based on detected line of sight orientations. By adjusting the position parameter dynamically rather than using fixed positions, the system resolves the contradiction between preventing confusion and maintaining natural user behavior

Inventive Principle:
Principle #35Parameter changes

2Reliability

If the position of content in virtual space is controlled to change display position, then the content can be positioned to avoid overlap, but existing plane-based position control technology cannot be used

Engineering Contradiction:
Improveline of sight separationVSAvoidcontrol system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent transitions from 2D plane-based content positioning to 3D virtual space positioning. By adding the depth dimension to content placement, the system can achieve line of sight separation without complex control mechanisms, as content can be positioned in front of, behind, or beside the user's line of sight

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Ease of operation

If the display position of content is not changed, then the user experience is maintained, but the line of sight of the user overlaps with the line of sight of the nearby person causing confusion

Engineering Contradiction:
Improveuser experienceVSAvoidconfusion to nearby persons
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent implements feedback by continuously detecting the orientation of nearby persons' heads and using this information to adjust content position. The detection unit provides real-time feedback about potential line of sight overlap, triggering content position changes only when necessary to prevent confusion while maintaining normal user experience

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS20240127726A1Display control device
Publication Date: 2024.04.18 NTT DOCOMO INC
  • US20240127726A1 patent drawing
  • US20240127726A1 patent drawing
  • US20240127726A1 patent drawing

AI summary

A display control device for performing control on a display of a display configured to display an image of content laid out in a virtual space as viewed from a predetermined position, the display being mounted on portions of eyes by a user. The device detects an orientation, with respect to the display, of a head portion of a person other than the user and determines whether a position of the content needs to be changed based on a detection-result and the position of the content in the virtual space. A position change destination of the content in the virtual space is set based on a distance between the position change destination of the content in the virtual space and a position at a current point in time of the content and to change the position of the content when the position of the content is to be changed.