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Semiconductor Solutions for Hybrid AV Distribution

Semtech 的 ProAV ASIC 解决方案的一个独特功能是使用 AVX 扩展器BlueRiver® AV 处理器器件的产品之间的互操作性。基于 AVX 的产品可搭配任何基于 AVP 的产品。这两个产品系列之间不仅物理接口和协议兼容,而且都可以使用 SDVoE 应用程序编程接口 (API) 进行配置和控制。SDVoE API 标准接口通过单个系统级控制,可为任意数量的基于 ASIC 的可互操作端点管理切换、配置和处理。

Both AVX and AVP use standard 10 Gigabit (10G) Ethernet connectivity and IP protocol to extend HDMI video up to 4K, multichannel digital audio and control interfaces, such as USB and RS-232, over 100m of copper category cabling, or many hundreds of meters over optical fiber. The key difference is that AVX devices provide point-to-point 10G connectivity, while AVP powered products permit flexible IP networking capability using standard 10G Ethernet switches.

As shown in the diagram, installations may require a hybrid approach to AV distribution, where the core is based around IP networking, while in-room AV extension need only be point-to-point. The diagram illustrates how an AVX switch can be connected directly to an AVP receiver driving the projector, providing connectivity for both local and remote sources. Installers can use a mix of AVX and AVP, where AVP-based endpoints talking to AVX can be re-purposed for future expansion to fully networked capability later.

Figure 1. Installations may require a hybrid approach to AV distribution. In this example, the AVX switch is connected directly to an AVP receiver driving the projector, providing connectivity for both local and remote sources.

Migrating to AV-over-IP

In this diagram, the hybrid-based AV system has been upgraded to take full advantage of SDVoE, allowing all AV switching and extension to be controlled via software. Since an AVP Transceiver device was previously used for remote sources (connected to the AVX switch via its HDMI output), the HDMI input is now used to provide network connectivity of the local source. Using the existing AVP receiver, the projector now connected directly to the SDVoE network, allowing display of both local and remote sources switched via the 10G network, without limitation. With an AVP2000-enabled receiver driving the projector, installers can upgrade user software tools to allow multiview modes, such as quad slit or picture in picture (PIP), where the projector can show both local and multiple remote sources simultaneously. This approach clearly shows the cost and flexibility benefits of an all IP-based AV system, since less hardware is required in the huddle room and advanced display modes enabled without the need to purchase dedicated multiview processors.  

Figure 2. This hybrid-based AV system takes full advantage of SDVoE, allowing all AV switching and extension to be controlled via software.

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