Rear-View Vision Device with Driver Position-Based Image Selection
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Solution Overview
Problem
Conventional rear-view vision systems in vehicles face limitations due to the size and cost constraints of screens, leading to a restricted field of view and increased vehicle width from exterior mirrors, which can be cumbersome and costly.
Innovation Solution
A rear-view vision device using electronic means with cameras and adjustable display technology that allows drivers to select and display specific parts of the rear-view image based on their position, eliminating the need for exterior mirrors and enabling smaller, more cost-effective screens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If exterior mirrors are used for rear-view vision, then the field of view is adequate, but the vehicle width increases and aerodynamic performance deteriorates
Solution Approach 1:
The patent replaces the mechanical mirror system with an electronic imaging system consisting of cameras and display screens. This substitution eliminates the need for exterior mirrors that increase vehicle width, while maintaining rear-view vision functionality through electronic means.
Solution Approach 2:
The patent uses cameras to capture optical images of the rear scene and displays these copied images on screens inside the vehicle. This allows the driver to view rear conditions without physical mirrors extending the vehicle width.
2Device complexity
If small screens are used in the rear-view vision system, then the device complexity is reduced and cost decreases, but the field of view is restricted
Solution Approach 1:
The patent implements a dynamic image selection system that automatically adjusts which portion of the captured rear-view image is displayed on the screen based on the driver's head position and viewing angle. This dynamic adaptation allows small screens to effectively provide an extended field of view by presenting different image regions as the driver moves.
Solution Approach 2:
The system provides different display content for different viewing positions. By detecting the driver's position and selectively displaying relevant portions of the rear-view image, the system optimizes the visual information presented for each specific viewing angle, maximizing the effective field of view on a small screen.
3Ease of manufacture
If the screen position is constrained by safety regulations and available space, then the vehicle design is simplified, but the field of view is limited
Solution Approach 1:
The patent compensates for fixed screen positions by dynamically adjusting the displayed image content based on real-time detection of driver position. This allows the system to maintain a fixed, safety-compliant screen installation while still providing variable viewing angles and extended field of view coverage.
4Loss of energy
If conventional mirrors are replaced with camera-based systems, then aerodynamic performance improves and vehicle width decreases, but the blind spots remain
Solution Approach 1:
The patent divides the rear-view monitoring task into multiple camera units positioned at different locations (left, center, right) to capture different spatial zones. This segmentation of the imaging function across multiple sensors enables comprehensive coverage that eliminates blind spots while maintaining the aerodynamic benefits of removing exterior mirrors.
Data Source
AI summary
The invention relates to a rear-view device (1) for a vehicle able to be driven by a driver, characterized in that the device (1) comprises electronic means (40, 50, 70, 75, 80, 85) configured to receive at least one rear-view image and to allow the display of a part of said image, the part of the image displayed being selected as a function of the position of the driver.