Electronic Rearview Mirror Control Using Shared Vehicle Controllers
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Solution Overview
Problem
The high cost of deploying an independent electronic rearview mirror system on vehicles due to the need for separate electronic rearview mirror ECUs and the lack of redundancy in existing systems.
Innovation Solution
Integrating the functions of an electronic rearview mirror system into another in-vehicle system by reusing controllers, such as those of an ADAS or IVI system, to eliminate the need for separate ECUs and enhance system redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an independent electronic rearview mirror system is deployed with separate ECUs, then the system functionality is complete, but the deployment cost is high
Solution Approach 1:
The patent applies multi-functionality by enabling existing in-vehicle controllers (ADAS or IVI system controllers) to perform both their original functions and electronic rearview mirror image processing functions. The controller is configured to receive image data from cameras, process the images, and display them on screens, thereby eliminating the need for dedicated electronic rearview mirror ECUs and reducing overall system cost.
2Device complexity
If existing in-vehicle controllers are reused for electronic rearview mirror functions, then deployment cost is reduced, but system redundancy is improved
Solution Approach 1:
The patent merges the electronic rearview mirror control functions with existing in-vehicle controllers. By combining multiple functions (ADAS processing, IVI system operations, and rearview mirror image processing) into shared controllers, the system reduces the total number of ECUs required while maintaining operational redundancy through the dual-controller architecture.
Data Source
AI summary
An electronic rearview mirror system includes a plurality of cameras, a plurality of displays, a first controller, and a second controller. The plurality of cameras is configured to collect an image at a left rearview angle and an image at a right rearview angle outside a vehicle. The first controller and the second controller are configured to: obtain information about the images from the plurality of cameras and perform image processing on the information. The first controller and the second controller are further configured to serve as controllers of an in-vehicle system different from the electronic rearview mirror system. The plurality of displays is configured to display images obtained after the image processing.