Rearward Camera Blind Spot Display for Side Lane Awareness
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Solution Overview
Problem
Drivers face challenges in detecting vehicles in side lane blind spots due to limited rearview mirror visibility and existing solutions requiring complexity and cost, such as multiple cameras and displays.
Innovation Solution
A vehicular vision system with a rearward-facing camera and video display screen that processes and displays video images to alert drivers of vehicles in blind spots, using a single camera and display for both reverse and forward driving scenarios, enhancing situational awareness without substantial interference with the rearview mirror field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple cameras and displays are used to provide improved blind spot detection, then detection reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies multi-functionality by enabling a single rearward-facing camera to serve dual purposes: providing backup reverse aid imagery and providing side lane blind spot monitoring imagery. The camera is positioned to capture both rearward and side lane areas, and the system selectively displays different portions of the captured imagery based on driving conditions (reverse vs. forward motion), thereby eliminating the need for separate cameras and displays for each function.
2Measurement precision
If multiple cameras and displays are deployed for blind spot monitoring, then measurement precision is improved, but manufacturing cost increases
Solution Approach 1:
The system reduces manufacturing cost by utilizing the existing rearward-facing camera infrastructure for both reverse aid and blind spot monitoring functions. The single camera captures imagery that is then processed to provide both rearward view and side lane blind spot detection, eliminating the need to manufacture and install multiple separate camera systems while maintaining detection precision through selective imagery processing and display.
3Device complexity
If a rearward-facing camera is used for both reverse and forward driving scenarios, then device complexity is reduced, but adaptability decreases
Solution Approach 1:
The system achieves adaptability through dynamic functionality switching based on driving conditions. The control system detects whether the vehicle is in reverse or forward motion and dynamically adjusts the display content accordingly: showing rearward blind zone imagery during reverse maneuvers and side lane blind spot imagery during forward driving. This dynamic adaptation allows a single camera system to effectively serve multiple functional requirements without physical modification.
Data Source
AI summary
A vehicular vision system includes a video display screen and a video processor operable to process captured video image data captured by a rearward-viewing color video camera at the vehicle. The video display screen includes a left display region at a left portion, a right display region at a right portion, and a middle display region that spans between the left and right display regions. The video display screen (i) displays at the left display region video images derived from captured image data to display a scene occurring in a left side lane, (ii) displays at the right display region video images derived from captured image data to display a scene occurring in a right side lane and (iii) displays at the middle display region video images derived from captured image data to display a scene occurring rearward of the vehicle in the lane the equipped vehicle is travelling in.