HUD Image Visibility Control via Dynamic Parameter Adjustment
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Solution Overview
Problem
Existing head-up display (HUD) devices can be troublesome for occupants due to the display of information, as they may require drivers to change their posture or gaze significantly to adjust the image visibility, which can be inconvenient and distracting during driving.
Innovation Solution
A display device and control method that includes an image generator, a receiver, and a controller to adjust the visibility of a service image by changing its position, luminance, or size based on user input, allowing the generation of a warning image when a predetermined reduction in visibility is achieved, thereby reducing occupant discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the service image is displayed with high visibility on the windshield, then the driver can clearly see the information, but the driver must change posture or gaze significantly to adjust the image, causing inconvenience and distraction
Solution Approach 1:
The patent implements dynamic adjustment of the service image parameters (position, luminance, size) based on real-time detection of the driver's line of sight and operational state. The controller continuously modifies these parameters to maintain optimal visibility while adapting to the driver's natural gaze direction, eliminating the need for significant posture changes.
Solution Approach 2:
The system changes multiple parameters of the service image simultaneously - position coordinates, luminance intensity, and display size - to optimize the balance between visibility and driver convenience. By adjusting these parameters dynamically, the system ensures the image remains clearly visible while requiring minimal driver intervention or posture adjustment.
2Illumination intensity
If the service image is displayed with high luminance to ensure visibility, then the driver can see the information clearly, but the image becomes too bright and uncomfortable for the driver
Solution Approach 1:
The controller dynamically adjusts the luminance parameter of the service image based on the driver's operational state and environmental conditions. By continuously monitoring and modifying the luminance level, the system maintains sufficient image visibility while preventing excessive brightness that would cause driver discomfort or distraction.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor driver response and operational state, then adjust the service image luminance accordingly. This closed-loop control ensures the luminance remains within an optimal range that provides clear visibility without causing discomfort, automatically adapting to changing conditions.
3Area of moving object
If the service image is displayed at a large size to improve readability, then the driver can read the information easily, but the image occupies excessive space on the windshield and may obstruct the driver's view of the road
Solution Approach 1:
The controller dynamically adjusts the display size parameter of the service image based on the driver's line of sight detection and operational context. By optimizing the image size in real-time, the system ensures sufficient readability while minimizing the occupied space on the windshield to prevent obstruction of the driver's road view.
Solution Approach 2:
The system applies different display parameters to different regions of the windshield, positioning the service image in areas that do not obstruct the driver's primary view of the road. By strategically locating the image in less critical viewing zones while maintaining appropriate size for readability, the system balances information accessibility with road surveillance.
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
The solution effectively reduces occupant discomfort by allowing intuitive adjustments to the image's visibility, enabling easier management of the HUD display without significant posture changes, thus enhancing driving convenience and safety.
Implementation Method 1
an image generator configured to generate a service image to be visually recognized by an observer by outputting light for forming an image toward a reflector reflecting incident light toward the observer's eyes
Data Source
AI summary
A display device includes an image generator configured to generate a service image to be visually recognized by an observer by outputting light for forming an image toward a reflector reflecting incident light toward the observer's eyes and superimposing the light on a scene, a receiver configured to receive the observer's operation of reducing a visibility of the image, and a controller configured to control a visibility of the service image in accordance with the operation performed on the receiver, and the controller is configured to cause the image generator to generate a warning image in a case in which the operation of reducing the visibility to a predetermined degree is performed.