Adaptive Vehicle Display Adjusting Virtual Image for Viewpoint Shifts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle display devices, such as head-up displays, can cause discomfort for users due to changes in viewpoint position, as the size and position of virtual images superimposed on the windshield do not adjust accordingly, leading to misalignment with the scenery.
Innovation Solution
A vehicle display device that includes a viewpoint position acquisition unit, an image generation unit, and a projection unit, which adjusts the position and size of virtual images on the display surface based on the user's viewpoint position, ensuring the image remains appropriate and comfortable for the user regardless of changes in seating height or posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the projection position is fixed, then the device complexity is reduced, but the user comfort deteriorates when viewpoint position changes
Solution Approach 1:
The patent applies dynamics by making the image generation unit adjustable based on detected viewpoint position. The system dynamically changes the position and size of displayed image elements according to the user's seating height and posture, transforming a static display system into an adaptive one that maintains optimal display conditions regardless of user position variations.
Solution Approach 2:
The patent implements parameter changes by modifying display parameters (position and size of image elements) based on detected viewpoint position. The system adjusts these parameters in real-time to compensate for changes in user seating height and posture, ensuring consistent display quality without requiring complex mechanical adjustments to the projection system.
2Ease of operation
If the virtual image position is adjusted to maintain constant superimposition range, then the user comfort is improved, but the device complexity increases due to additional actuators and detection systems
Solution Approach 1:
The patent replaces mechanical adjustment systems (concave mirror actuators, projection unit positioners) with an image processing approach. The image generation unit computationally adjusts the position and size of displayed elements based on viewpoint detection, substituting complex mechanical actuation with software-based image manipulation that achieves the same visual compensation effect.
Solution Approach 2:
The patent uses image copying and transformation techniques where the original image elements are reproduced with modified positions and sizes in the virtual image plane. This allows the system to create adjusted virtual images without physically moving any components, achieving display adaptation through digital image processing rather than mechanical repositioning.
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 device maintains a consistent and appropriate virtual image size and position on the windshield, reducing user discomfort by adjusting the display elements' position and size in response to changes in the user's viewpoint, thereby providing clear and comfortable information to the driver.
Implementation Method 1
a projection unit that projects the image toward the translucent member of the vehicle so that the user sitting in the driver's seat is allowed to visually recognize a virtual image by reflecting the image displayed on the display surface by the translucent member of the vehicle
Data Source
Figure 1A~1B
Figure 1C
Figure 2
AI summary
Provided is a vehicle display device capable of providing a user with appropriate information, without being affected by changes in the position of the viewpoint of the user. A vehicle display device 10 is provided with: a viewpoint position acquisition unit 40 for acquiring a user viewpoint position 100 of a user seated in the driver seat of a vehicle 1; a forward information acquisition unit 60 for acquiring forward information of the vehicle 1; an image generation unit 30 for generating an image obtained by reflecting the forward information included within a prescribed area among the forward information acquired by the forward information acquisition unit 60; an image display unit 20 having a display surface 21 capable of displaying an image generated by the image generation unit 30; and a projection unit 50 for projecting the image toward a translucent member 2 of the vehicle 1 such that a virtual image 330 is visible to the user seated in the driver seat. The image generation unit 30 determines the position and the size of a first image element 250 to be displayed, among image elements included in the generated image, on the display surface 21, according to the user viewpoint position 100 in the vertical direction acquired by the viewpoint position acquisition unit 40.