Vehicle Display System Light Pattern Visibility Control
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Solution Overview
Problem
In a future automated driving society, visual communication between vehicles and pedestrians or occupants is hindered when two vehicles emitting light patterns onto a road surface are close to each other, leading to decreased visibility and ineffective intention conveyance.
Innovation Solution
A vehicle display system with a first display device emitting a light pattern and a display control unit that stops or changes the light pattern emission in response to detection of a second vehicle's light pattern, ensuring clear visibility of both vehicles' intentions by adjusting the light pattern or displaying information on a head-up display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a vehicle emits a light pattern onto the road surface for visual communication, then the intention conveyance to pedestrians and occupants is improved, but when another vehicle is present close by, the visibility of the light pattern decreases due to overlap
Solution Approach 1:
The road surface drawing device dynamically adjusts its operation based on the presence of other vehicles. The control unit detects other vehicles and changes the emission state of the light pattern from continuous to intermittent or stops emission temporarily, allowing the other vehicle's light pattern to be visible while maintaining communication capability when needed
Solution Approach 2:
Instead of continuous emission, the system uses periodic or intermittent emission of light patterns. When another vehicle is detected, the emission is switched to an intermittent mode with specific duty cycles, allowing periods of visibility for both vehicles while maintaining information transmission capability
2Loss of information
If the light pattern emission is continuous for effective communication, then the information transmission is improved, but the visibility of other vehicles' light patterns is reduced
Solution Approach 1:
The system uses detection feedback from sensors to monitor the presence of other vehicles and adjusts the light pattern emission accordingly. When another vehicle is detected within a predetermined distance, the control unit receives feedback and modifies the emission pattern to eliminate interference while maintaining communication effectiveness
Solution Approach 2:
The emission mode transitions from static continuous emission to dynamic adaptive emission based on real-time detection of other vehicles. The system continuously monitors the environment and adjusts emission parameters to optimize both communication effectiveness and visibility for all road users
Data Source
AI summary
A display system provided in a vehicle includes: a road surface drawing device configured to emit a light pattern toward a road surface outside the vehicle; and a display control unit configured to control the road surface drawing device. The display control unit stops emission of the light pattern in response to detection of a light pattern emitted from a vehicle.