Interior Mirror Display for Multi-Camera Field-of-View Switching

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Solution Overview

Problem

Current interior rearview mirror systems for vehicles lack modularity and flexibility in accommodating various camera configurations, leading to increased complexity and cost, as well as limitations in dynamically adjusting the field of view and displaying aggregated image data effectively.

Innovation Solution

The system incorporates a remote multiplexor that aggregates image data from multiple cameras and transfers it to an interior rearview mirror assembly equipped with an image processor, allowing for modular support of different camera configurations and dynamic field of view adjustments, with features like automatic glare reduction and display mode changes based on user input and vehicle conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a remote multiplexor is used to aggregate image data from multiple cameras, then the system modularity and flexibility are improved, but the device complexity increases due to additional components and data processing requirements

Engineering Contradiction:
Improvesystem modularityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system is divided into distinct modular components: multiple camera modules can be independently configured and connected to the multiplexor through standard interfaces. Each camera operates as an independent unit that can be added, removed, or reconfigured without affecting other cameras, enabling flexible system assembly and maintenance while maintaining overall system functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The multiplexor is designed as a universal data aggregation component that can interface with multiple different camera configurations and types through standardized protocols. This universal interface allows the same multiplexor hardware to support various camera arrangements (different numbers, positions, and specifications) without requiring custom integration for each configuration, thereby improving adaptability while controlling complexity through standardization.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Loss of information

If image data from multiple cameras is aggregated and processed, then the field of view coverage and information completeness are improved, but the processing time and computational load increase

Engineering Contradiction:
Improveinformation completenessVSAvoidprocessing time
Core Design Contradiction:
Loss of informationVSLoss of time

Solution Approach 1:

The multiplexor performs preliminary data aggregation and preprocessing of image data from multiple cameras before the data reaches the main processing unit. By consolidating data streams and performing initial processing steps in advance, the system reduces the computational burden on downstream processors and minimizes overall processing time while ensuring complete information from all cameras is captured and organized.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

Each camera module includes onboard processing capabilities that perform initial image processing and data formatting before transmission to the multiplexor. This self-service approach allows cameras to prepare their data independently, reducing the processing load on central systems and enabling parallel processing of multiple camera streams, thereby maintaining information completeness while reducing overall processing time.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If the mirror assembly is made adjustable with multiple camera configurations, then the adaptability to different vehicle types is improved, but the manufacturing complexity and cost increase

Engineering Contradiction:
Improveadaptability to vehicle typesVSAvoidmanufacturing complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The mirror assembly incorporates adjustable components with specific local functionalities that can be configured for different vehicle types. Rather than redesigning the entire assembly, specific modules (such as camera mounts, positioning mechanisms, or reflective elements) can be adjusted or reconfigured to match different vehicle specifications, enabling adaptability while maintaining standardized manufacturing processes for the core components.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The mirror assembly incorporates adjustable and reconfigurable elements that allow post-manufacturing adaptation to different vehicle types. Mechanical adjustment mechanisms, programmable camera positions, or software-configurable parameters enable the same physical assembly to serve multiple vehicle applications without requiring custom manufacturing for each vehicle type, thereby improving adaptability while controlling manufacturing complexity through standardized base designs.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20250018866A1Vehicular vision system with interior mirror display
Publication Date: 2025.01.16 MAGNA MIRRORS OF AMERICA INC
  • US20250018866A1 patent drawing
  • US20250018866A1 patent drawing
  • US20250018866A1 patent drawing

AI summary

A vehicular vision system includes a plurality of cameras disposed at a vehicle, a multiplexor operable to aggregate the image data from the cameras into aggregated image data, and an interior rearview mirror assembly disposed at the vehicle remote from the multiplexor. The interior rearview mirror assembly includes a mirror head adjustably disposed at a mounting base configured to attach at an interior portion of the vehicle. The mirror head includes a mirror casing and a mirror reflective element. The interior rearview mirror assembly includes an image processor for processing image data. The interior rearview mirror assembly includes a display for displaying images captured by the cameras. The image processor, responsive to receiving the aggregated image data transferred from the multiplexor, displays at the video display video images derived at least in part from the aggregated image data.