Head-Up Display Perspective Layout for Sequential Road Sign Recognition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional head-up display devices struggle to intuitively present a sequence of driving-related information along a vehicle's travel route due to the limited vertical space of the image forming plane, making it difficult for drivers to recognize nearest and following information sequentially.
Innovation Solution
The head-up display device employs left and right line segment objects that expand vertically, allowing first and second information objects related to road signs and route guidance to be displayed along these lines, with the first object appearing below the second, creating a sense of perspective and intuitive recognition of information sequence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the image forming plane has a short vertical length to avoid obstructing the driver's line of vision, then the driver's viewing comfort is improved, but the ability to arrange multiple information objects sequentially along the travel route deteriorates
Solution Approach 1:
The patent transitions from traditional vertical stacking of information objects to a diagonal arrangement along perspective lines that extend from the bottom center toward the top edges of the display. This diagonal dimension allows multiple information objects to be arranged sequentially while maintaining the compact vertical profile needed for driver comfort.
Solution Approach 2:
The patent employs asymmetric positioning of information objects along diagonal perspective lines rather than symmetric vertical stacking. The first information object is positioned lower and closer to the center, while subsequent objects are positioned higher and farther out, creating an asymmetric layout that fits within the limited vertical space while preserving sequential recognition.
2Loss of information
If multiple information objects are arranged vertically to show sequence along the travel route, then information sequence recognition is improved, but the vertical length of the image forming plane increases obstructing the driver's line of vision
Solution Approach 1:
Instead of arranging information objects along the vertical dimension, the patent arranges them along diagonal perspective lines that extend from the bottom center toward the top corners. This utilizes the horizontal-diagonal dimension to achieve sequential arrangement without increasing the critical vertical footprint.
Solution Approach 2:
The patent divides the display area into multiple perspective lines radiating from the bottom center, with information objects segmented and placed along these different lines. This segmentation allows multiple objects to be distributed across the available space without requiring them to be stacked vertically.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An optical processor of the head-up display device obtains from a controller a first image signal based on the nearest road sign information and a second image signal based on the following road sign information along the travel route. The optical processor causes line segment objects as well as information objects generated from the first image signal and the second image signal, respectively, to be displayed on the image forming plane. The objects are both disposed along the right line segment object at positions on the right outer side thereof. The object is disposed at a position diagonally leftwards above the object on the image forming plane.