Sony to Release Video Transmission Unit Using IP Technologies

Sep 3, 2012
Ikutaro Kojima, Tech-On!
An example of a constructed live system for broadcast stations
An example of a constructed live system for broadcast stations
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An example of a constructed system for concert halls
An example of a constructed system for concert halls
[ If it clicks, the expanded picture will open ]

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.

Bi-directional transmission

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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NXL-IP55 can be used with broadcast cameras

The NXL-IP55 works together with the network transmission function of the "HDC-2000" series of broadcast cameras. The HDC-2000 series is equipped with a network transmission line with a transmission rate of 1Gbps or higher between the camera head and the CCU (camera control unit).

When the NXL-IP55 is connected to both ends of the line, it becomes possible to transmit video signals from up to three cameras in addition to signals from the HDC-2000. In other words, up to four kinds of HD camera videos can be transmitted through one optical composite cable, making it easy to broadcast dynamic scenes of sports event, theatrical performance, etc.

Furthermore, Sony will release an accessory for IP control of the "BRC-H900," "BRC-Z700" and "BRC-Z330" pivoted remote cameras. When it is combined with the "RM-IP10" remote controller and the "BRBK-IP10"/"BRBK-IP7Z" optional card, it becomes possible to construct a flexible remote camera system using IP technologies, the company said.

The NXL-IP55 weighs 2.5kg and measures 214 x 42.2 x 314.2mm (excluding protrusions). It comes with a dedicated AC adaptor, and its power supply voltage is DC19.5V. As for video formats, it supports 1,920 x 1,080 pixels/59.94i and 50i as well as 1,280 x 720 pixels/59.94P and 50P. The manufacturer's suggested retail price of the unit is ¥892,500 (approx US$11,391, including tax). It will be released in January 2013.