VR Device Dynamic Field of View Adjustment
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Solution Overview
Problem
Existing VR technologies fail to provide content that dynamically changes based on a user's viewing direction while moving, limiting the realism and immersion of the virtual experience.
Innovation Solution
A VR device that uses positioning sensors to detect user movement and provide frames corresponding to the user's changing sight direction, allowing for a more realistic and interactive virtual environment by adjusting the field of view and enabling past or future views through head movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If VR content is displayed with a fixed field of view, then the device complexity is reduced, but the user immersion and realism are limited
Solution Approach 1:
The patent applies dynamics by making the field of view adjustable rather than fixed. The system dynamically changes the field of view based on user head movements detected by sensors, allowing the viewing angle to adapt in real-time. This resolves the contradiction by introducing dynamic adjustment capability that enhances immersion without requiring complete redesign of the display system.
Solution Approach 2:
The patent changes the parameter of field of view angle based on user movement detection. By modifying this key parameter dynamically according to head position and movement data from sensors, the system provides personalized viewing experiences that improve immersion while using existing hardware components.
2Adaptability or versatility
If the VR device provides content only within the initial viewing angle, then the device complexity is reduced, but the degree of freedom and user control are limited
Solution Approach 1:
The system uses feedback from sensors that detect user head movements and position. This feedback information is processed to dynamically adjust the field of view and provide content appropriate to the user's current viewing direction and head position, enabling degree of freedom while managing complexity through intelligent control algorithms.
Solution Approach 2:
The system pre-calculates and prepares multiple frames of VR content at different viewing angles before the user actually needs them. By anticipating user movements and preparing content in advance based on detected head movement patterns, the system reduces real-time processing requirements and manages complexity.
3Reliability
If the VR device continuously adjusts the field of view according to user movement, then the user immersion is improved, but the processing time and computational load increase
Solution Approach 1:
The system performs preliminary actions by pre-calculating multiple frames at different viewing angles and preparing content in advance. This allows the system to reduce real-time computational load while maintaining high immersion by having pre-prepared content ready for immediate display when user movement occurs.
Solution Approach 2:
Instead of continuously adjusting the field of view at maximum precision, the system applies partial action by adjusting only when necessary based on detected user movement thresholds. This selective adjustment approach maintains sufficient immersion while significantly reducing processing time and computational requirements.
Data Source
Figure 1~2A
Figure 2B~3
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AI summary
A device and a method is provided. The method includes identifying a sight direction of the device based on the movement information. The method also includes identifying an angle formed between a first straight line that starts from a predetermined position on the display and corresponds to the identified sight direction, and a second straight line that starts from the predetermined position and corresponds to a direction according to a movement trajectory obtained from multiple frames. The method further includes determining whether to start an adjusting mode for providing a frame corresponding to the identified sight direction based on the identified angle and a threshold value determined with respect to a field of view of the device. The method additionally includes identifying a first frame and a second frame among the multiple frames. The method also includes displaying the first frame and then display the second frame.