Adaptive HMD Display Control via Gaze Distance Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional head-mounted displays (HMDs) fail to effectively adjust the display image in response to the user's gaze direction and distance, leading to reduced visibility and increased user load when viewing both outside scenes and displayed images.
Innovation Solution
A head-mounted display system that includes display units for each eye, a control unit to adjust the display mode based on the user's gaze distance and convergence angle, and state detecting units to calculate the gaze distance, allowing for adaptive image positioning, size, and brightness adjustments to enhance visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the display image is displayed at a fixed position and size, then the device complexity is reduced, but the visibility of the display image deteriorates when the user gazes at different distances
Solution Approach 1:
The display mode is made dynamic by continuously adjusting the display position and size based on the user's real-time gaze distance. The control unit receives gaze distance information and dynamically modifies display parameters to maintain optimal visibility regardless of viewing distance, transforming a static display system into an adaptive one.
Solution Approach 2:
The system implements feedback by using the gaze distance detection unit to monitor user viewing conditions and feeding this information back to the control unit. The control unit then adjusts display parameters based on this feedback, creating a closed-loop system that automatically optimizes display visibility according to actual user behavior.
2Measurement precision
If the display mode is adjusted according to gaze distance, then the visibility of the display image is improved, but the device complexity increases due to additional detection and control mechanisms
Solution Approach 1:
The gaze distance detection unit serves multiple functions: it detects user viewing distance, determines appropriate display modes, and enables adaptive display adjustment. By making this component multi-functional, the system reduces the need for separate detection and control mechanisms, thereby limiting the increase in device complexity while achieving improved adaptability.
Solution Approach 2:
The display system performs self-adjustment by automatically modifying display parameters based on detected gaze distance without requiring manual user intervention. The control unit autonomously selects and applies appropriate display modes, making the system self-regulating and reducing the complexity associated with manual control interfaces.
3Adaptability or versatility
If the display position and size are changed according to convergence angle, then the adaptability to user gaze is improved, but the ease of operation deteriorates due to automatic adjustments
Solution Approach 1:
The display system autonomously adjusts its parameters based on detected convergence angle and gaze distance, eliminating the need for manual user control. The system serves itself by automatically selecting appropriate display modes and parameters, which improves adaptability while maintaining operational simplicity from the user perspective.
Solution Approach 2:
The system uses feedback from convergence angle detection to automatically adjust display parameters. This closed-loop control eliminates manual adjustment operations, making the system appear effortless to users while achieving high adaptability to different viewing conditions.
4Ease of operation
If the display image is adjusted dynamically, then the user load is reduced, but the use of energy increases due to continuous adjustment operations
Solution Approach 1:
The display adjustment operates periodically based on changes in gaze distance rather than continuously. The system monitors gaze distance and adjusts display parameters only when significant changes occur, transforming continuous adjustment into periodic action. This reduces energy consumption while still providing dynamic adaptation to maintain low user load.
Data Source
AI summary
A HMD is provided with a virtual image display including a first display and a second display that display images respectively corresponding to a right eye and a left eye of a user such that an outside scene is visible. The HMD is provided with a control device that controls a display mode of the image by the virtual image display according to a gaze distance of the user.