In-Vehicle Windshield Display System for Dynamic Mode Switching
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Solution Overview
Problem
Conventional in-vehicle display systems, such as heads-up displays (HUDs), are limited in their ability to display images across a wide range of the windshield, especially when the vehicle is stopped, restricting the range of information that can be shown to the driver.
Innovation Solution
The system employs a combination of a first display device that projects a virtual image in a limited area of the windshield during manual driving and a second display device that displays a real image in a wider area during autonomous driving, using a control device to manage the transition between these modes, allowing for increased reflectance and flexible image placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a HUD displays an image as a virtual image in front of the vehicle during manual driving, then the driver's line of sight movement is reduced and safety is improved, but the display area on the windshield is limited to a narrow range
Solution Approach 1:
The patent divides the windshield display system into two separate display devices: a first display device for virtual images during manual driving, and a second display device for real images during autonomous driving. This segmentation allows each device to optimize for its specific function, with the second device expanding the display area to a wide range across the windshield when the vehicle is stopped or in autonomous mode
Solution Approach 2:
The control device dynamically switches between the first and second display devices based on the vehicle's travel state. When the vehicle transitions from manual to autonomous driving mode, the system activates the second display device that provides wide-area real image display, thereby adapting the display characteristics to the current operational context
2Ease of operation
If the HUD displays information in a limited area during manual driving, then the front field of view is not disturbed, but the range of information that can be displayed is restricted when the vehicle is stopped
Solution Approach 1:
The patent creates a multi-functional display system where the windshield can serve different display purposes based on the vehicle's operational state. The second display device is configured to display real images in a wide area across the windshield, enabling comprehensive information display during autonomous driving or when stopped, while the first display device maintains optimized virtual image display during manual driving
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
Enables the display of information across a wider area of the windshield, enhancing user experience and safety by allowing drivers to access applications during autonomous driving without disturbing their view, and smoothly transitioning to essential driving information when switching back to manual mode.
Implementation Method 1
a first display device configured to irradiate a first area of a windshield of a vehicle with a first light constituting a first image and to display the first image as a virtual image in front of the first area
Implementation Method 2
a second display device configured to display a second image as a real image in a second area of the windshield that is wider than the first area
Data Source
AI summary
Implementations of an in-vehicle display system may include: a first display device configured to irradiate a first area of a windshield of a vehicle with a first light constituting a first image and to display the first image as a virtual image of the first image in front of the first area; a second display device configured to display a second image as a real image in a second area of the windshield that is wider than the first area; and a control device configured to control the first display device and the second display device based on a travel state of the vehicle.