Rear Surface Windshield Projection for AVN Displays
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Solution Overview
Problem
The rear surface of protrusion type information display apparatuses in vehicles is underutilized for outputting information due to user accessibility limitations.
Innovation Solution
A method and apparatus that utilize a projector unit on the rear surface of a protrusion type information display apparatus to project images onto specific regions of the windshield, determined by an output region determination unit and corrected by a screen correction unit, allowing for effective display of information corresponding to various events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a protrusion type AVN system is used with display and command input devices on the front surface, then the front surface functionality is adequate, but the rear surface remains underutilized and inaccessible to users
Solution Approach 1:
The patent utilizes the rear surface of the protrusion type AVN system, which is traditionally inaccessible, by projecting images onto the windshield. This transforms the unused rear surface into a functional display area, effectively adding a new dimension of utilization to the device structure.
Solution Approach 2:
The patent introduces a projector as an intermediary component that bridges the gap between the rear surface display capability and the windshield viewing area. The projector takes images from the AVN system and projects them onto the windshield, making the rear surface information accessible to users without requiring direct contact with the rear surface.
2Productivity
If images are projected onto the windshield, then information display capability is enhanced, but image distortion may occur due to windshield curvature
Solution Approach 1:
The patent employs a screen correction unit that dynamically adjusts and corrects image distortion in real-time. The correction unit processes the image data to compensate for windshield curvature effects, ensuring that the projected information appears undistorted to the user despite the physical curvature of the windshield surface.
Solution Approach 2:
The screen correction unit modifies image parameters such as geometry, perspective, and distortion characteristics to counteract the effects of windshield curvature. By changing these parameters before projection, the system ensures accurate and undistorted information display on the curved windshield surface.
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 efficient use of the rear surface for information display, providing intuitive and undistorted images on the windshield, reducing manufacturing costs and enhancing user experience by eliminating the need for separate communication interfaces and allowing flexible display positioning.
Implementation Method 1
projecting various types of information on a windshield through a projection unit disposed on a rear surface
Data Source
AI summary
An in-vehicle information display apparatus and a method of controlling the same output outputting various pieces of information using image output devices disposed on a rear surface of a protrusion type information display apparatus. The protrusion type information display apparatus applied to a vehicle includes an output region determination unit configured to, upon detecting that an event occurs, determine an image corresponding to the event and an output region, among a plurality of regions of a windshield, a screen correction unit configured to correct the determined image to match the determined output region, and a projector unit disposed on a rear surface opposite to a front surface on which a display is disposed and configured to project the corrected image onto the determined output region.