Windshield Display Coordination for Route Information Recognition
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Solution Overview
Problem
Existing driving support systems fail to intuitively and quickly present information about points on a vehicle's route to drivers, as the information is not coordinated with the driver's view through the windshield, making it difficult for drivers to recognize and respond effectively.
Innovation Solution
A driving support system comprising a vehicle location detector, a traffic and road information database, a point information acquisition unit, and a display control unit that displays point information on a horizontally long screen in the lower area of the driver's view, with display positions and sizes determined based on the vehicle's location and velocity vector, ensuring alignment with the driver's view and prioritizing information closest to the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If route information is displayed on a predetermined area of the display device, then the information can be shown to the driver, but the driver's view through the windshield cannot be coordinated with the displayed information, making it difficult for the driver to intuitively and quickly recognize the information
Solution Approach 1:
The patent transitions from a traditional fixed-position display to a spatially coordinated display system. The display device is positioned in the lower area of the driver's view, and the display control unit maps route point positions to specific locations on the display screen based on the vehicle's current location and the actual spatial relationship between the vehicle and route points. This creates a multi-dimensional coordination between the real-world route geometry and the display screen coordinates, enabling intuitive recognition.
Solution Approach 2:
The display screen creates a simplified copy or representation of the actual route geometry. The display control unit calculates display positions that mirror the real spatial relationships - route points that are farther away or in different directions from the vehicle are represented at corresponding positions on the screen. This copying approach allows the driver to intuitively understand route information without needing to mentally translate between the display and the actual road layout.
2Ease of manufacture
If display positions are not based on positional relationship between vehicle location and route points, then the display setup is simpler, but the information cannot be aligned with the driver's actual view through the windshield
Solution Approach 1:
The display position calculation is dynamic rather than static. The display control unit continuously updates the display positions based on the vehicle's current location, velocity vector, and the geometric relationship between the vehicle and route points. This dynamic adjustment ensures that the displayed information remains accurately aligned with the driver's actual view through the windshield, even as the vehicle moves along the route.
Solution Approach 2:
The system performs preliminary calculations to determine optimal display positions before information is presented to the driver. The display control unit pre-calculates the positions of route points relative to the vehicle's current location and velocity, and uses these pre-computed positions to place information on the display screen. This preliminary action ensures accurate alignment without adding complexity to the real-time display operation.
Data Source
AI summary
A driving support system including: a vehicle location detector which detects current location and velocity vector of a vehicle; a traffic and road information database which stores point information of points on a route of the vehicle; a point information acquisition unit which acquires, from the database, the point information of the approaching points located in a given distance from the vehicle current location, based on the detected vehicle current location and velocity vector; a display device which provides displays of the acquired point information on a horizontally long screen thereof along a windshield of the vehicle; and a display control unit for controlling the display device. The display control unit determines display positions on the screen to display the point information, based on a positional relationship between the current location of the vehicle and the points where the point information related thereto are displayed.