Vehicular Image Display Apparatus for Mirror Position Adaptability
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Solution Overview
Problem
Conventional vehicular image display systems with cameras on movable parts, such as outer mirrors, face issues where the direction of the main axis of displayed images changes with the mirror's position, leading to incorrect environmental recognition by vehicle occupants.
Innovation Solution
A vehicular image display apparatus with a controller that adjusts the extracted image region based on the mirror's operating position, ensuring the main axis direction remains consistent across different positions, and includes a manual adjustment feature for further customization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a camera is disposed on a movable portion such as an outer mirror, then the camera can capture images from different positions, but the direction of the main axis of the displayed image changes with the mirror's position, causing incorrect environmental recognition
Solution Approach 1:
The patent replaces mechanical image stabilization mechanisms with an electronic control system that processes image data. The controller calculates the mirror's operating position and automatically adjusts the extracted image region's angular direction through signal processing, eliminating the need for mechanical adjustment mechanisms while maintaining image direction accuracy.
Solution Approach 2:
The patent changes the angular direction parameter of the extracted image region based on the mirror's operating position. By dynamically adjusting this parameter, the system compensates for the mirror's movement and maintains a consistent main axis direction in the displayed image, resolving the contradiction between position adaptability and direction accuracy.
2Device complexity
If the extracted image region is fixed to a predetermined partial region, then the image extraction process is simple, but the main axis direction of displayed images varies with mirror position, degrading image legibility
Solution Approach 1:
The patent transitions from a static fixed-region extraction approach to a dynamic extraction method. The controller dynamically determines the angular direction of the extracted image region based on the mirror's real-time operating position, ensuring that the main axis direction remains consistent across different mirror positions while maintaining reasonable system complexity.
3Adaptability or versatility
If the camera position changes with mirror deployment, then the system adapts to different operating states, but the displayed image's main axis direction becomes inconsistent, causing vehicle occupant confusion
Solution Approach 1:
The patent implements a feedback mechanism where the controller receives information about the mirror's operating position and uses this feedback to adjust the extracted image region's angular direction. This closed-loop control ensures that the displayed image's main axis direction remains consistent with the vehicle body's orientation, preventing environmental recognition errors.
Data Source
AI summary
A camera is disposed on a door mirror whose operating position is changeable between a deployed position and a retracted position, so that the positional relationship of the camera with a vehicle body changes as the operating position of the door mirror changes. A region corresponding to the operating position of the door mirror is partially extracted from the entire shot area of an image taken by the camera. That is, the angular direction of the region partially extracted from the entire shot area taken by the camera when the door mirror is in the deployed position and the angular direction of the region partially extracted from the entire shot area taken by the camera when the door mirror is in the retracted position are made different from each other by an angle equal to the angle difference between the two positions of the door mirror. The camera-taken images of the extracted regions are conformed to the screen of a display. Thus, the vehicle traveling direction appearing on the display remains unchanged regardless of changes in the operating position of the door mirror.