Adaptive Head-Up Display Positioning for Driver Gaze and Road Visibility
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Solution Overview
Problem
Existing head-up display systems in vehicles fail to consider multiple driving conditions and driver gaze direction, leading to reduced visibility of important information and increased accident risk due to partial image coverage and distraction.
Innovation Solution
An intelligent device that integrates an input interface, analysis unit, and output interface to generate a control command for an augmented reality display unit, allowing predefined optical output of notice symbols at specific positions in the driver's field of vision, utilizing sensor data for enhanced visibility and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If information is projected onto the windshield using a head-up display, then the driver can see information without looking away from the road, but the image behind the windshield is partially covered and relevant information becomes difficult to spot
Solution Approach 1:
The patent applies local quality by displaying different types of information at different positions on the windshield. Critical safety information is projected in the peripheral field of vision to avoid obscuring the central view, while other information can be displayed in less critical areas. This spatial differentiation ensures that important road information remains visible while still providing necessary driver information.
2Adaptability or versatility
If the virtual image position is varied based on driving condition parameters, then information can be adapted to different driving scenarios, but only one parameter is considered and the driver's viewing direction and roadway conditions are not taken into account
Solution Approach 1:
The patent implements multi-functionality by integrating multiple detection systems that monitor various parameters simultaneously - driving condition parameters, driver viewing direction, and roadway conditions. The head-up display system universally adapts to all these factors together, rather than considering them separately, enabling comprehensive adaptation to complex driving scenarios while maintaining a unified system architecture.
Solution Approach 2:
The patent applies dynamics by making the virtual image position dynamically adjustable based on real-time input from multiple sensors. The system continuously monitors changes in driver viewing direction, roadway conditions, and driving parameters, and automatically repositions the displayed information accordingly. This dynamic adaptation ensures optimal information visibility across varying driving conditions without requiring manual intervention.
3Ease of operation
If the image section size and position are adjusted as a function of road course and driving direction, then the view can be improved for specific trajectories, but the driver's gaze cannot be deliberately guided toward hazard sources and eye position is not determined
Solution Approach 1:
The patent implements feedback by incorporating eye position detection that provides real-time information about driver gaze direction. This feedback is used to dynamically adjust the position and content of displayed information, and to guide the driver's attention toward hazard sources when detected. The system creates a closed-loop control where display adjustments are based on actual driver viewing behavior, enhancing both ease of operation and hazard detection reliability.
4Illumination intensity
If only eye position is detected to adjust information visibility, then visibility can be improved, but transmission of further information through notice position and gaze guidance cannot be achieved
Solution Approach 1:
The patent applies segmentation by separating the information display into multiple functional zones on the windshield. Different segments serve different purposes: some areas provide basic information visibility adjustments based on eye position, while other segments are dedicated to hazard alerts and gaze guidance functions. This spatial segmentation allows simultaneous achievement of visibility improvement and information-rich communication without functional interference.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances visibility and safety by directing the driver's gaze to critical information without diverting attention from the road, using predefined optical outputs and sensor fusion for precise positioning, thereby improving traffic safety and comfort.
Implementation Method 1
A portion of information, such as instantaneous driving speed, is projected onto the windshield and visually superimposed on the image behind the windshield. These display devices generally include a projector, which projects the light emitted by the display onto the windshield
Implementation Method 2
the windshield acting as a combiner and reflecting the light, and thereby providing a virtual image, which is visible to the driver, in front of the windshield
Data Source
AI summary
Technologies and techniques for displaying information for an occupant of a motor vehicle. The display position of a head-up display is able to be varied flexibly depending on the context. To this end, both a displacement of the X and/or Y position and a color selection adapted to the background may be implemented and be performed automatically. Information from the steering angle, speed, map data and also head tracking by the interior camera may be combined to determine the X and/or Y position. In order to achieve optimum visibility for any load case, sensor fusion from the position data and an exterior camera may take place: Content or information (24) may thus be displayed depending on the current display position, so as to be more visible. If only some of the information is on a background, only some of the color may also change.