Trailer Camera Controller View Compression for Vehicle Bandwidth
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current surround-view camera systems for vehicles with trailers face bandwidth limitations and cache memory issues when processing multiple camera streams, leading to increased processing time and potential cache faults, especially when trying to generate a 3D view of the vehicle and trailer combination.
Innovation Solution
A camera system that simplifies communication between the vehicle and trailer by reducing the number of simultaneous image streams, allowing only one image to be transmitted from the trailer controller to the vehicle's control device per frame, thereby reducing memory consumption and the likelihood of cache faults, and can be implemented in a cost-effective and retrofittable manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple camera streams from trailer cameras are transmitted to the vehicle control device, then the image resolution and view accuracy are improved, but the bandwidth requirement and data transmission load increase considerably
Solution Approach 1:
The patent extracts and processes camera data locally at the trailer controller, generating a compressed view representation that contains only the essential visual information needed for the combined surround-view display. This extracted data is then transmitted to the vehicle control device, significantly reducing the data transmission load while maintaining view accuracy.
Solution Approach 2:
The patent segments the camera data processing into two independent parts: the trailer controller processes its own camera streams locally to generate a compressed view, while the vehicle control device processes the vehicle cameras and combines them with the trailer's compressed view. This segmentation allows each controller to operate independently and reduces the total data transmission requirement.
2Measurement precision
If all camera images from vehicle and trailer are processed simultaneously in the control device, then a complete 3D view is achieved, but the cache memory requirements and processing time increase
Solution Approach 1:
The patent segments the image processing task between the trailer controller and the vehicle control device. The trailer controller processes its camera images locally and generates a compressed view representation, which is then transmitted to the vehicle control device. This segmentation allows the vehicle control device to process fewer images simultaneously, reducing cache memory requirements and processing time while still achieving a complete 3D view of the vehicle-trailer combination.
Solution Approach 2:
The trailer controller performs preliminary processing of its camera images locally, generating a compressed view representation before transmission to the vehicle control device. This preliminary action reduces the amount of data that needs to be processed at the vehicle control device, thereby reducing overall processing time and cache memory requirements.
3Length of stationary object
If a separate controller is integrated in the trailer to collect camera data, then the cable length restrictions are overcome, but the bandwidth between trailer controller and vehicle control device becomes insufficient for multiple image streams
Solution Approach 1:
The trailer controller extracts and processes camera data locally, generating a compressed view representation that contains only the essential visual information. This extracted compressed data is then transmitted to the vehicle control device, significantly reducing the bandwidth requirement while maintaining the ability to overcome cable length restrictions through wireless communication.
Solution Approach 2:
The patent changes the data transmission parameter from transmitting multiple full-resolution image streams to transmitting a single compressed view representation. This parameter change reduces the bandwidth requirement while maintaining the functionality of the surround-view system, allowing the system to overcome cable length restrictions.
Data Source
AI summary
The present disclosure relates to a camera system, in particular a surround-view camera system for a vehicle, including a control device, multiple cameras arranged in/on the vehicle, and a controller which is arranged in/on an additional vehicle, in particular a trailer. Multiple additional cameras or trailer cameras are arranged in/on the additional vehicle or trailer. The control device generates a view by means of the cameras. The controller generates a view by means of the trailer cameras, and a combined view is generated from the views of the control device and the controller.