Dynamic Virtual Image Distance Control for Vehicle HUD
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Solution Overview
Problem
Conventional head-up display (HUD) systems for vehicles do not effectively provide drivers with information by dynamically adjusting the apparent position of virtual images based on the vehicle's relative position to information objects, such as landmarks or guidance points, which can lead to difficulty in recognizing important locations or navigation instructions.
Innovation Solution
A display control device that adjusts the virtual image distance of displayed objects in a HUD system based on the vehicle's relative position to information objects, allowing the driver to see these objects as if they were closer or farther away, thereby enhancing the visibility and recognition of critical information like convenience stores, gas stations, or navigation points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the virtual image distance is fixed in a conventional HUD system, then the system structure is simple, but the driver cannot effectively recognize important locations or navigation instructions at different distances
Solution Approach 1:
The patent applies the dynamics principle by making the virtual image distance adjustable and dynamic rather than fixed. The system changes the virtual image distance based on the relative position between the vehicle and information objects, allowing the display to adapt to different driving scenarios and distances, thereby improving recognition accuracy without requiring a completely new system architecture
Solution Approach 2:
The patent implements parameter changes by modifying the virtual image distance parameter according to the relative position of the vehicle and information objects. By dynamically adjusting this key parameter, the system enhances the driver's ability to recognize important locations and navigation instructions at varying distances while maintaining the existing HUD system framework
2Adaptability or versatility
If the virtual image distance is dynamically adjusted based on relative position, then the driver can effectively recognize information objects, but the system requires complex control mechanisms
Solution Approach 1:
The patent applies feedback by continuously monitoring the relative position between the vehicle and information objects, then using this information to dynamically adjust the virtual image distance. This closed-loop control mechanism enables the display system to automatically adapt to different driving scenarios and distances, improving versatility while managing system complexity through intelligent control
Solution Approach 2:
The patent implements universality by designing a control system that can handle multiple types of information objects (landmarks, navigation instructions, points of interest) at various distances using a single unified approach. The system adjusts virtual image distance based on relative position regardless of the specific type of information object, making the display adaptable and versatile across different driving situations
Data Source
AI summary
A virtual image display 2 can display a display object being a virtual image which can be visually recognized from a driver's seat of a vehicle through a windshield in a virtual image position defined by a virtual image direction which is a direction of the virtual image on a basis of a specific position of the vehicle and a virtual image distance which is a distance to the virtual image on a basis of the specific position. A display control device 1 includes a relative position acquisition part 11 obtaining a relative position of an information-to-be-provided object which is a point or a feature associated with information with which a driver of the vehicle is provided, using the display object, and the vehicle and a controller 13 controlling a display of the virtual image display 2. The controller 13 changes a virtual image distance of the display object in accordance with the relative position of the information-to-be-provided object corresponding to the display object and the vehicle.