Semtech’s BlueRiver® chipset is uniquely designed to provide long distance extension of AV content, up to 4K60 4:4:4 (HDMI 2.0b), over both copper category cabling and optical fiber. By utilizing the same technology used for 10G Ethernet, BlueRiver provides guaranteed transmission up to 100m using Cat-6a unshielded twisted pair (UTP) cable, or tens of kilometers using optical fiber. BlueRiver-based devices simultaneously transmit uncompressed-quality 4K video, multi-channel audio, Gigabit Ethernet, USB 2.0, and other control signals, offering unprecedented levels of performance for standalone point-to-point AV extension for video conference solutions and meeting room applications.

Figure 1. Typical “Bring Your Own Meeting” (BYOM) setup, where users connect devices running video conferencing software to a remote display and camera via a BlueRiver 10G link. 

The diagram above shows a typical “Bring Your Own Meeting” (BYOM) meeting room, where a user connects their laptop running Teams or Zoom video conferencing software to a remote display and camera via a 10G link. Typically, an AV hub is located on the meeting room table, allowing connection of the laptop via HDMI and the USB connectivity for the conferencing camera. A single copper Category cable is then used to carry all the audio, video, and USB signals from the AV hub to the speakers, display and camera mounted on the meeting room wall. By using Power over Ethernet (PoE), with the AVP1000 Receiver configured as the Power Sourcing Equipment (PSE), and the AVP1000 Transmitter as the Powered Device (PD), the desktop AV hub only requires a single Category cable connection for remote AV, USB, and power, reducing the number of cables at the desktop, and providing a clean and clutter free design.

Since BlueRiver provides 10Gbps of bandwidth for AV and control signals, with video consuming less than 9Gbps, there is more than enough bandwidth left over to carry the full data payload required by USB 2.0. This means that high quality, low-cost USB 2.0 webcams supporting up to 1080p30 video with very low latency can be used for a full HD high end video conferencing experience. Other AV extension technologies such as HDBaseT only offer up to 200Mbps maximum of USB 2.0 throughput, which means little to no support of high quality, low latency HD webcams.

Inside the Box with AVP1000: Cost-Effective, Lowest End-to-End Latency Performance

Figure 2. Pairing AVP1000 with ADI Icron’s ExtremeUSB enables full 480Mbps USB 2.0.

For the most cost-effective point-to-point matrix switch solution, providing the lowest end-to-end latency performance, Semtech’s AVP1000 AV Processor can be used to transmit up to 4K60 video over 100m of Cat-6a standard copper category cabling. If shorter distances are required for smaller meeting rooms, Cat-6 or Cat-5e cable can be used. To enable the full 480Mbps transmission of USB 2.0, the AVP1000 is paired with the ExtremeUSB® device from ADI Icron. With such a low component count, compact and sleek AV hub designs can be realized for desktop AV connectivity.

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Figure 3. When paired with ADI Icron’s ExtremeUSB, an AVP1000 based receiver provides seamless connectivity and extension of the highest quality HD webcams.

With just a handful of core components, an AVP1000 based Receiver can be designed to connect HD and 4K displays, along with 1080p USB cameras, providing an end-to-end solution with sub-millisecond latency for high performance BYOM video conferencing applications using copper category cabling. Paired with the ADI Icron ExtremeUSB device provides seamless connectivity and extension of the highest quality HD webcams. Further implementing PoE with the Receiver configured as the PSE means that the AV hub (Transmitter) can be fully powered over the 10G link, removing the need for additional power connectivity on the meeting room table.

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