Head-Mounted Display Input Method Switching for Noise
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Solution Overview
Problem
Existing head-mounted display systems face challenges in switching input methods effectively, particularly when the voice input method is inappropriate due to environmental noise or other factors, leading to difficulties in using pre-set input methods based on activity states.
Innovation Solution
A head-mounted display apparatus with a display unit, a microphone for voice recognition, and alternative input methods such as head movement, controller movement, line-of-sight detection, and touch panel inputs, which automatically switches to an appropriate input method when voice recognition is not possible, ensuring seamless interaction with the wearer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If voice recognition input method is used, then input speed and convenience are improved, but reliability deteriorates when ambient noise is large
Solution Approach 1:
The system dynamically switches between voice recognition input and alternative input methods based on real-time detection of ambient noise levels and wearer activity states. When noise exceeds a threshold or activity state changes, the system transitions from voice-based to alternative input modes, ensuring continuous reliable operation across varying environmental conditions
Solution Approach 2:
The system changes the operational parameters of the input method based on environmental conditions. When ambient noise level or activity state parameters indicate unsuitable conditions for voice recognition, the system switches to alternative input methods with different operational characteristics that are more suitable for those conditions
2Adaptability or versatility
If multiple input methods are prepared in advance, then adaptability to different activity states is improved, but device complexity increases
Solution Approach 1:
The head-mounted display apparatus integrates multiple input methods (voice recognition, alternative input methods) within a single device, enabling it to function across diverse activity states and environmental conditions. The system universally supports both input modalities and automatically selects the appropriate one based on current conditions, avoiding the need for separate devices for different input needs
Solution Approach 2:
The system automatically detects changes in activity state and ambient noise levels, and autonomously switches between input methods without requiring manual user intervention. The wearer simply needs to speak or interact naturally, and the system handles the complexity of selecting and switching between input methods based on real-time sensor data and environmental conditions
Data Source
AI summary
A head-mounted display apparatus includes a display unit configured to display an image overlapping with an external scene, a display control unit configured to control image display on the display unit, a microphone, a first accepting unit configured to accept, by voice recognition of voice input from the microphone, a change of a display state of the image, and a second accepting unit configured to accept, by a method other than the voice recognition, the change of the display state of the image. When acceptance by the first accepting unit is not possible, the display control unit switches to acceptance by the second accepting unit, and changes the display state of the image.