Understanding how to make different vendors software operate coherently is critical to achieving the smooth operation of real-time broadcast facilities, especially with the new emergence of IP infrastructures. Discover who is achieving this and how.
The subjects of timing, synchronizing and broadcasting are inseparable and in this new series John Watkinson will look at the fundamentals of timing, areas in which fundamental progress was made, how we got where we are and where we might be going.
PTP - as a precise network timing technology has been available for nearly two decades. It is already widely used in Telecommunication networks, Finance and Trading platforms, substation automation networks and many more industries. Every industry has its own demands such as target accuracy on the end nodes, or whether it should be used locally or via wide area connections. Furthermore, there is often the question of whether existing network components should be re-used or if they will be replaced.
The history of computing has been dominated by the von Neumann computer architecture, also known as the Princeton architecture, after the university of that name, in which one common memory stores the operating system, user programs and variables the programs operate on.
Television is still a niche industry, but nonetheless, one of the most powerful story telling mediums in existence. Whether reporting news events, delivering educational seminars, or product reviews, television still outperforms all other mediums in terms of its ability to communicate to mass audiences.
A number of new production facilities are now being designed and built around the ST 2110 standard for video over IP, but the cost has been prohibitive for many others. The engineers at Diversified Systems Inc. (DSI), a veteran systems integrator, were challenged by this when it came to a recent project to add cameras to the recording studios of New York City’s renown Power Station.
IP networks are delivering outstanding success for broadcasters, both in terms of scalable functionality and flexibility. And the recent NMOS suite of specifications is improving integration and control, with IS-06 and IS-07 accelerating the process.
By now it’s become clear that IP networks bring new types of useful capabilities and flexibility that can’t be ignored. However, if you want to ensure Quality of Service (QoS) by minimizing packet loss, latency and adverse network reliability issues, a comprehensive software management layer is critical to optimal network performance.
SDI and IP differ fundamentally in their approach to data transport as SDI is circuit switched and IP is packet switched. This provides interesting challenges for us as we start to consider what it means to route IP signals.