Sony Corp officially announced the "NXL-IP55" transmission unit in an effort to promote the use of IP (Internet protocol) technologies in the field of professional AV.
With the unit, it becomes possible to bi-directionally transmit multiple HD (high definition) video, audio and control signals in a live transmission through one network cable with extremely low delay.
Sony announced the development of the unit in April 2012 and exhibited it at NAB (National Associations of Broadcasters) 2012, which took place in Las Vegas, the US in the same month. The unit was developed in the aim of making it easy to construct and operate live video transmission systems and remote live studios by combining the "HD-SDI," which is an HD transmission standard in the broadcasting industry, and IP network transmission technologies.
According to the announcement, a high quality video transmission with extremely low delay and the synchronization of videos from cameras are required for live broadcasts from stadiums, theaters, outdoor sports facilities, etc. To realize them, it is currently necessary to have several cables for synchronization signals, control signals, etc in addition to coaxial cables for multiple cameras, making it difficult to construct or operate video transmission systems.
The NXL-IP55 enables to realize IP live transmission in which videos are synchronized via a network while reducing the lag of broadcast-quality HD video to one field or less (excluding network delay). As a result, multiple cameras placed away from an AV control room can be connected, making it easier to construct systems compared with traditional methods of laying cables and improving operational efficiency.
Two units of the NXL-IP55 realize bi-directional IP video transmission. For example, it enables to construct a system that transmits video switched in an AV control room to a unit in a theater with low delay and projects it on a large screen.
NXL-IP55 can be used with broadcast cameras
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