IP-to-UVC Video Bridging for Multi-Device Peripheral Access
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Solution Overview
Problem
Existing video communication technologies are limited by wired peripheral bus connections, such as USB, which restrict distance and allow only single-device access, and lack efficient methods for converting IP network video streams to USB Video Class protocol (USB UVC) and vice versa.
Innovation Solution
A bridging device or software solution that transcodes video between IP and peripheral bus formats, allowing multiple devices to access and control video sources over Ethernet networks, using ONVIF control protocol for uniform camera operation and supporting native OS video processing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wired peripheral bus connections (USB) are used for video communication, then native OS support and real-time processing are achieved, but distance is restricted and single-device access only is allowed
Solution Approach 1:
A bridge device is introduced as an intermediary between the IP network and the peripheral bus system. This bridge translates IP-based video streams into USB Video Class protocol format, enabling multiple devices to access video sources over Ethernet while maintaining compatibility with native OS support for USB connections.
Solution Approach 2:
The bridge device provides multi-functionality by supporting both IP network interfaces and peripheral bus interfaces simultaneously. It enables a single video source to be accessed by multiple devices through different protocols, making the system adaptable to both wired USB connections and wireless IP network connections.
2Reliability
If wired peripheral bus connections (USB) are used for video communication, then stable connection is achieved, but distance is restricted
Solution Approach 1:
The bridge device acts as a mediator that receives stable USB video inputs and re-transmits them over IP networks. This allows the video signal to extend beyond the limited USB cable distance while maintaining connection stability through the bridge's buffering and protocol translation capabilities.
3Adaptability or versatility
If IP network protocol is used for video communication, then multi-device access and extended distance are achieved, but native OS video processing support is lost
Solution Approach 1:
The bridge device translates IP-based video streams into USB Video Class protocol format, allowing the operating system to process video through its native USB drivers and interfaces. This translation layer enables IP network connectivity while preserving the ease of operation provided by native OS support.
4Adaptability or versatility
If protocol translation between IP and USB UVC is implemented, then compatibility between different connection types is achieved, but device complexity increases
Solution Approach 1:
The bridge device implements protocol translation between IP and USB Video Class protocols. While this adds device complexity, it enables seamless compatibility between different connection types, allowing video sources to be accessed via either IP network or USB connection without requiring separate processing.
Data Source
AI summary
Described are techniques for video bridging for conversion of IP network video streams to the USB Video Class (UVC). The conversion of IP video to UVC video can include the use of software-only conversions and hardware assisted conversions, and can be done within purpose-built “conversion” devices or as software only solutions operating within applications or drivers within the operating systems of the “end nodes”. The end-nodes simultaneously see and use multiple USB UVC video sources. The conversion process can also convert the USB UVC video control protocol to IP Video Stream control protocols.