Italy's RAI Selects Axon Synapse Product Line to Manage Transition to HD
A key step was the decision to broadcast advertising in 16:9 since last November 2009. The agreement with the advertisers associations ruled that advertisement were produced and broadcasted in 16:9 in all areas of the country, including those ones still covered by analogue transmission. In these areas the 16:9 format must be automatically converted into 4:3 letterbox format, i.e. with top and bottom black bars. To properly manage these mixed production and transmission environments, RAI has designed and built an infrastructure that allows the information about the program aspect ratio to be inserted into the video signal. RAI choose to insert both the WSS index (valid both in the analog and in the digital domain) and the VI index (valid only in the digital domain) in order to avoid losing that information across its range of digital and analog equipment facilities.
This allows RAI to keep programs in their native format and to apply format conversions where required. In this way RAI can broadcast 16:9 programs into digital areas and convert them to 4:3 letterbox into those areas still analog. The regional channel RAI 3 was the most complex situation to manage. The national RAI 3 channel signal is always transferred to the regional stations in order to allow the insertion of regional Teletext lines and the transmission of regional news programs (see attached figure). For this reason also all regional studios have been equipped with the infrastructure needed to handle the WSS and VI indices, and to perform format conversions for analog transmission areas. For this deployment RAI installed more than 22 Synapse frames equipped with over 120 modules (converters, data inserters, aspect ratio converters and audio delay lines) across its entire operations, from the national broadcast center in Rome to the three main production centers (Milan, Naples and Turin) and the 17 regional studios.
The project manager of RAI Production TV department, engineering group, explains: "We used the Synapse line for the availability of all functions required by us, and more importantly for the ability to process all the auxiliary information in the video signal in a transparent way. Moreover the Synapse line have multi functions cards that give significant cost benefits for complex environments like ours. This is the case of the INS400 card, a Teletext inserter that accepts input from two sources, one analog and one digital, and allows to select which lines to insert from which source. This will allow us to complete the digitization of the Teletext in the regional studios without having to change the equipment we have just installed, but simply by reprogramming the INS400 cards."
“Since RAI is one of the largest and most respected broadcasters in Europe, we are proud to be selected as one of the suppliers to help RAI in making the transition to HD. Together with RAI, we have developed new products that seamless suites to their needs. Thanks to the flexible architecture of our Synapse range we were able to do this in a short period of time at very affordable costs”, says Harry Kanters AXON’s Director of Marketing & Sales.
AXON is committed to developing products that meet customer requirements in an industry that forever changes. As a company of ideas, innovation and solid engineering, we champion progress. We’re proud that major players in broadcasting worldwide choose our state-of-the-art modular systems to serve the wide range of their audio and video signal processing demands – in OB trucks, studios and transmission and play-out facilities.AXON