Wireless Rearview Camera Interface for Stable Trailer Image Display
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Solution Overview
Problem
Existing vehicles lack an effective means to provide rearview images of objects behind the vehicle while the operator maintains a forward-facing position, especially when towing trailers, without the need for wired cameras and complex cable connections.
Innovation Solution
A wireless camera system with a video interface, including a microcontroller and dual antennas, establishes a wireless local area network to transmit analog signals to a display on the vehicle, processing them into digital signals for presentation on multiple displays, such as a head unit or digital rearview mirror, using Wi-Fi protocol.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired cameras and cable connections are used to transmit rearview images, then image transmission reliability is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless communication system. The camera transmits images wirelessly to the display device using wireless communication technology, eliminating the need for physical cable connections while maintaining image transmission functionality. This substitution reduces system complexity and installation difficulty while preserving reliability through the wireless communication channel.
2Ease of manufacture
If wireless camera system is used, then ease of installation is improved, but signal transmission stability may deteriorate
Solution Approach 1:
The patent introduces a signal processing unit as an intermediary between the wireless camera and the display device. This intermediary receives wireless signals from the camera, processes and stabilizes the signal, then transmits it to the display. This mediator ensures signal transmission stability while maintaining the ease of installation provided by the wireless camera system.
3Ease of operation
If images are displayed on multiple displays concurrently, then visibility and information access are improved, but system complexity increases
Solution Approach 1:
The patent segments the display function across multiple independent display devices. Each display device can independently receive and show camera images, allowing the system to provide enhanced visibility by distributing image output to multiple locations within the vehicle without requiring complex centralized control for each display.
Data Source
AI summary
A video interface for signals between a wireless camera and a display, disposed on a vehicle, can include a microcontroller, a first port, and a second port. The microcontroller can be configured to process analog signals to produce digital signals. The analog signals can represent images produced by the wireless camera. The digital signals can represent the images for the display. The first port can be configured to be connected to an antenna, disposed on the vehicle, for the analog signals. For example, the wireless camera can be configured to be mounted on a trailer configured to be towed by the vehicle. The second port can be configured to be connected to a cable for the display. The video interface can be configured to be disposed on the vehicle. The wireless camera can have two external single pole antennas.