Vehicle Road Surface Image Projection for Distortion-Free Driver and Pedestrian Displays
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Solution Overview
Problem
Existing road surface image-drawing systems fail to provide distortion-free displays for both the vehicle's driver and other individuals, such as pedestrians, leading to impaired driving comfort and attention diversion.
Innovation Solution
A road surface image-drawing system mounted on a vehicle that uses a laser light source unit and scanning mechanism to project distortion-free images for the driver and other individuals, with a control device determining the display content and orientation to ensure both displays are relevant and attention-grabbing without diverting the driver's attention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single display is projected on the road surface for both the driver and other persons, then the system complexity is reduced, but the display becomes distorted for at least one viewer and driving comfort is impaired
Solution Approach 1:
The patent divides the display into two separate projections: a first display for the driver and a second display for other persons. This segmentation allows each display to be optimized for its specific viewer, eliminating distortion while maintaining system functionality. The driver's display provides necessary information without distracting elements, while the second display communicates vehicle presence to pedestrians and other road users.
Solution Approach 2:
The patent applies different display characteristics to different locations on the road surface. The first display is positioned and configured specifically for the driver's viewpoint, while the second display is positioned and configured for other persons' viewpoints. This local optimization ensures each viewer receives appropriate information in a distortion-free manner.
2Reliability
If information is displayed to other persons on the road surface, then safety is improved, but the driver's attention may be diverted
Solution Approach 1:
By separating the display into two distinct projections with different content and positioning, the system ensures the driver receives only necessary information in a familiar format, while other persons receive comprehensive safety information. This segmentation prevents attention diversion while maintaining safety communication.
Solution Approach 2:
Instead of projecting a single comprehensive display that might distract the driver, the system inverts the approach by providing the driver with minimal necessary information and reserving detailed communication for other persons. This inversion prioritizes driver focus while achieving safety objectives.
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 system effectively provides distortion-free displays for both the driver and other individuals, enhancing driving comfort and safety by ensuring relevant information is conveyed without diverting the driver's attention, thus preventing collisions.
Implementation Method 1
an image-drawing device (8) including a laser light source unit (10) and a scanning mechanism (11)
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
In this invention, letters that can be seen by a pedestrian (101) are drawn on an intersection (103). A mark (MM2) that can be seen by the driver of the host vehicle (C) is drawn on the road (104) between the intersection (103) and the host-vehicle (C). The shapes of the letters (MO4) are corrected in accordance with the positional relationship between the pedestrian (101) and the intersection (103). The shape of the mark (MM2) is corrected in accordance with the positional relationship between the driver of the host-vehicle (C) and the road (104).