HMD Virtual Play Area Adjustment for Real-Space Obstacle Avoidance

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Solution Overview

Problem

Existing VR technologies fail to allow users wearing HMDs to freely move around in a play area without colliding with real-space obstacles, as they rely on displaying virtual objects to replace obstacles, limiting movement.

Innovation Solution

An information processing apparatus that detects user position and posture in a virtual space, identifies real-space obstacles, and adjusts the play area to avoid collisions by searching for a new, obstacle-free area based on user position and posture information, displaying the new area on the HMD.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a virtual object is displayed to replace an obstacle in the play area, then collision avoidance is achieved, but user freedom of movement is restricted

Engineering Contradiction:
Improvecollision avoidanceVSAvoiduser freedom of movement
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The play area boundary is made dynamic rather than fixed. The system continuously detects obstacles in the real space and automatically adjusts the play area boundary to exclude detected obstacles, allowing the boundary to move and adapt to changing spatial conditions. This enables users to move freely within the dynamically adjusted boundaries without collision risks.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The obstacle detection and exclusion function is extracted from the traditional fixed boundary approach. By detecting obstacles in the real space and extracting them from the play area definition, the system creates a personalized play area that automatically avoids collision zones while maximizing user movement freedom.

Inventive Principle:
Principle #2Taking out (Extraction)

2Device complexity

If the play area is fixed, then implementation is simple, but collision with real-space obstacles cannot be avoided

Engineering Contradiction:
Improveplay area implementationVSAvoidcollision avoidance
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The system performs preliminary obstacle detection before establishing the play area boundary. By detecting obstacles in advance and using this information to define the play area boundary, the system prevents collisions before they can occur, rather than reacting after collisions happen.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors the real space for obstacles and uses this feedback to dynamically adjust the play area boundary. This closed-loop feedback mechanism ensures that the play area always excludes detected obstacles, maintaining collision avoidance while adapting to changing environmental conditions.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS20250259382A1Information processing apparatus setting play area on virtual space, information processing method, and storage medium
Publication Date: 2025.08.14 CANON KK
  • US20250259382A1 patent drawing
  • US20250259382A1 patent drawing
  • US20250259382A1 patent drawing

AI summary

An information processing apparatus capable of avoiding collision with an obstacle in a real space when a user wearing an HMD plays a game in a play area on a virtual space. The information processing apparatus displays a virtual space on a head mounted display worn by a user, detects position information of the user in the virtual space as a first user position, detects posture information of the user in the virtual space as a first user posture, sets a play area on the basis of the first user position and the first user posture, detects an obstacle in a real space in the play area, searches for a new play area on the basis of a position of the detected obstacle, and displays the new play area on the head mounted display.