Adaptable Wireless Vehicle Vision System Error Correction
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Solution Overview
Problem
Existing vehicle reverse-aid camera systems require labor-intensive and costly wiring installations, and suffer from interference issues due to one-way analog signal transmission, leading to poor functionality in the presence of signal degradation.
Innovation Solution
A wireless two-way communication system between a rearward-facing camera and a video display screen, using data compression and decompression to adapt to interference, allowing for real-time image transmission and error correction, thereby enhancing image quality and reducing installation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If wireless communication is used between camera and display screen, then installation complexity and cost are reduced, but signal interference and transmission errors increase
Solution Approach 1:
The system dynamically adjusts the compression factor based on detected transmission errors. The display screen communicates error information back to the camera, which then adapts its compression settings in real-time to maintain reliable video transmission despite wireless interference
Solution Approach 2:
The system changes the compression parameter of the video signal based on transmission conditions. When errors are detected, the compression factor is adjusted to optimize the balance between image quality and transmission reliability, allowing the system to adapt to varying wireless communication conditions
2Reliability
If two-way communication is implemented between camera and display screen, then transmission reliability improves through error correction, but device complexity increases
Solution Approach 1:
The display screen sends feedback signals to the camera indicating detected transmission errors. This feedback loop enables the camera to adjust its compression settings accordingly, improving transmission reliability through adaptive error correction without requiring complex additional hardware
3Productivity
If image compression is applied to reduce data transmission size, then transmission efficiency improves, but image quality deteriorates
Solution Approach 1:
The compression factor is made dynamic rather than fixed. The system adjusts the compression level in real-time based on transmission error feedback, allowing it to optimize the balance between transmission efficiency and image quality according to current communication conditions
Solution Approach 2:
The compression parameter is changed adaptively based on transmission conditions. When transmission errors are detected, the system modifies the compression factor to maintain acceptable image quality while ensuring reliable transmission, resolving the trade-off between efficiency and quality
Data Source
AI summary
A vision system for a vehicle includes a camera subsystem and a display subsystem. The camera subsystem includes an imaging sensor disposed at an equipped vehicle that captures image data, and the camera subsystem wirelessly transmits the image data. The display subsystem includes a video display screen disposed in the equipped vehicle for displaying images for viewing by a driver of the equipped vehicle when the driver is normally operating the equipped vehicle. The display subsystem is operable to receive the transmitted image data from the camera subsystem. The display subsystem transmits an error signal responsive to processing of the image data and the camera subsystem receives the error signal and at least one of (a) adjusts a compression factor of the image data responsive to the error signal and (b) adjusts a transmission rate of the image data responsive to the error signal.