HMD Reference Screen Storage for Consistent Display
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Solution Overview
Problem
Wearable head-mounted devices, such as HMDs, face issues when a user removes and re-wears them, as the displayed screen may change unexpectedly due to differing eye directions, leading to unintended screen displays for others.
Innovation Solution
An electronic device with a VR management module that detects reference screen setting and display events, allowing for the storage and retrieval of screen information, enabling the display of a consistent reference screen without requiring eye movement adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the HMD displays screen content based on user eye direction, then the user can view the intended content, but when another user wears the device with different eye direction, an unintended screen is displayed
Solution Approach 1:
The system performs preliminary actions by detecting and storing reference screen information before the user actually needs to view it. When the HMD is worn, the system proactively identifies the reference screen based on stored data and displays it, preventing the problem of unintended screens being shown to different users with different eye directions.
Solution Approach 2:
The system creates a copy of the reference screen information and stores it in the HMD's memory. This copied reference screen data allows the device to reconstruct and display the correct screen content regardless of the current user's eye direction, ensuring consistent display across different users.
2Ease of operation
If the HMD changes screen display according to eye direction, then the interface adapts to user viewing, but the user cannot easily return to a specific reference screen without moving eyes
Solution Approach 1:
The system provides self-service by automatically detecting the reference screen and displaying it without requiring the user to manually navigate or move their eyes to find it. The HMD autonomously identifies and presents the correct reference screen based on stored information, saving the user time and effort.
Solution Approach 2:
The system implements feedback by continuously monitoring for reference screen display requests and automatically responding by displaying the appropriate screen. This feedback mechanism ensures that when a user wants to return to a reference screen, the system detects the request and provides the correct display without delay.
3Reliability
If the HMD stores screen information for reference, then consistent display is achieved, but additional memory and processing requirements increase device complexity
Solution Approach 1:
The system extracts only the essential reference screen information needed for consistent display and stores it separately in memory. By taking out only the critical data elements rather than storing complete screen states, the system maintains display consistency while minimizing the additional complexity and memory requirements.
Data Source
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Figure 3A~3B
AI summary
Electronic device (101, e.g. a head-mounted display device (HMD) for providing virtual-reality environment to a user) including a display (150), a storage module (210) and a processor (120) detecting a reference screen and controlling the storage module (210) to store reference-screen information, wherein upon the display-occurrence of a reference screen, the processor (120) controls the display (150) to display the reference screen based on the stored information. If a first user takes his HMD off and then a second user puts it on, a different screen from that displayed when the HMD was taken off may be displayed according to a view-point of the second user. With the invention, if the first user wants to show an image to a second user whose eye direction differs from that of the first user, the display of an unintended screen can be prevented.