Vehicle HUD Visibility Control via Gaze and Obstruction Detection
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Solution Overview
Problem
Head-up display (HUD) systems on vehicle windshields become difficult to view due to visibility-reducing areas such as dirt or glare, which can obstruct the driver's field of view and impact driving safety.
Innovation Solution
A display control device that includes a visibility reducing area detector and a gaze detector to identify and address visibility-reducing areas by moving or modifying the HUD display, including increasing contrast or size, and displaying traveling direction information on obscured areas to supplement the driver's view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If HUD display is shown on the windshield, then driving information is provided to the driver, but visibility is reduced when rain, fog, sunlight, or obstacles are present
Solution Approach 1:
The patent implements dynamic display control that adjusts HUD display parameters (position, contrast, brightness) and content based on real-time detection of environmental conditions such as rain, fog, sunlight, and obstacles. The system continuously monitors visibility conditions and adapts the display to maintain optimal visibility while minimizing obstruction to the driver's field of view.
Solution Approach 2:
The system changes display parameters including position, contrast, and brightness of the HUD display based on detected environmental conditions. When visibility-reducing factors are detected, the display controller adjusts these parameters to ensure the driving information remains visible while reducing the negative impact on the driver's overall visibility.
2Object-affected harmful factors
If HUD display position is adjusted to avoid visibility-reducing areas, then visibility is improved, but the display may move to positions that obscure the driver's field of view
Solution Approach 1:
The patent employs a feedback mechanism where a gaze detector continuously monitors the driver's line of sight and field of view. This information is fed back to the display controller, which uses it to determine the optimal display position that maintains HUD visibility while avoiding obstruction of the driver's natural viewing area. The system dynamically adjusts display position based on real-time gaze detection feedback.
Solution Approach 2:
The system applies different display strategies to different regions of the windshield based on local conditions. When a visibility-reducing area is detected in a specific region, the display controller adjusts the HUD display position or parameters locally in that region while maintaining appropriate display in other regions, ensuring optimal visibility without unnecessarily obstructing the driver's field of view.
Data Source
AI summary
A display control device for a vehicle includes: a display controller that displays a determined display image including a display of a traveling state of the vehicle on a windshield of the vehicle; a visibility reducing area detector that detects a presence or an absence of a visibility reducing area on the windshield, the visibility reducing area reduces visibility of a driver; and a gaze detector that detects a gaze of the driver. When the visibility reducing area is detected, but the display of the traveling state does not overlap with the visibility reducing area, and the driver keeps the gaze on the visibility reducing area, the display controller displays, on the visibility reducing area, a traveling direction information necessary for driving the vehicle.