In Broadcast - December 2011/January 2012 - 70


InFOCUS

Convergent Technologies Improve Efficiency
By John B Payne IV, VP Technology, IMT
John Payne IV

Businesses weathering the economic recession have learned how to improve efficiency and drive down costs by doing as much or more with fewer yet better resources…
One area where technological advances are making a significant impact amid the shift from SD to HD is on the contribution side of ENG. With ENG, HD video transmission using conventional MPEG-2 compression consumes a great deal of RF bandwidth. This comes at a time when emerging 3G and 4G personal communications devices are being introduced that compete for available frequency spectrum. Here again, technological-based improvements in efficiency are required. IMT, through its Nucomm and RF Central product lines, offers a convergence of technological solutions to help broadcasters improve their ENG efficiency and streamline the production process. These solutions include: • extending the broadcast studio’s broadband IP network to the ENG/OB/SNG truck for enhanced workflow efficiency; • video compression enhancements using H.264/ MPEG4 to reduce the required bandwidth for HD transmission; • use of Coded Orthogonal Frequency Division Multiplexing (COFDM) transmission for robust RF links; • diversity reception implemented using a proprietary maximalratio combining technique that simplifies operation of the ENG microwave system while improving performance. (QoS), enabling the studio and the newsgathering vehicle to remotely share applications, skills and resources with much greater efficiency. IP traffic in the field can be received through multiple connections, including over-the-air 8-VSB, COFDM, cellular networks or Wi-Fi 802.11 b/g. Proprietary algorithms enable Messenger to select and seamlessly switch between the most efficient transmission paths. technological advancement in MPEG video compression, reducing the required bandwidth by nearly half as compared to an equivalent MPEG-2 video stream format. H.264/MPEG4 allows HD content to be delivered over the same robust link setting as a station’s existing SD content. Conversely, when transmitting H.264/MPEG4 SD video, multiple SD video sources can be multiplexed into a single transport stream improve system performance and reliability. Receiver diversity configurations can range from a relatively simple dual-antenna implementation up to 12 antennas in the implementation of city-wide receive sites. Depending on the application, diversity receivers can eliminate the need for tracking systems without sacrificing quality.

Mobile microLIte

70

Converging the technologies of H.264 video compression with COFDM transmission and diversity reception, RF Central has won various awards for microLite, its H.264/MPEG4 HD, ultra-miniature, COFDM transmitter. Traditional camera-back transmitters are relatively large in size, require a significant amount of DC power and are expensive. Targeting the newer smallformat HD video cameras, the microLite transmitter was designed to deliver 250mW of RF power from a package of less than 11 cubic inches. The product is also available with a dual-diversity receiver and antennas packaged as the microLite HD Elite system.

RF Central microLite HD Elite is put through its paces

Next Generation

Messenger

The Nucomm Messenger system builds on existing IP-based workflow protocols by extending the studio’s broadband IP network to the ENG/OB/SNG truck. Using Messenger, IP-based video files can easily be moved from the field to the studio’s news server. Nucomm’s Messenger significantly simplifies how today’s leaner news crews deliver stories, as it seamlessly integrates with newsroom computer networks and extends the studio computer system into the field. High-capacity IP bandwidth provides predictable and controlled Quality-of-Service

This extension of the studio network to the ENG vehicle allows a field reporter to edit a news item in the OB van using an NLE system implemented on a portable laptop computer and transport it directly to the news server by simply dragging the file icon into the network folder. File transmission speed is typically less than realtime, and can often be accomplished while the vehicle is in motion. Messenger greatly streamlines the production process while maximising the contributions of a single reporter.

and transmitted simultaneously, allowing a producer to select from more live-feed options. One such product is Nucomm’s Newscoder 4, a compact, lowpower, H.264/MPEG4 HD/SD encoder with AES encryption. At just 3.7 cubic inches in size, Newscoder 4 provides broadcasters with an efficient upgrade path for HD transmission using their existing SD transmission infrastructure.

Workhorse Link

Robust Upgrade Path

To improve the efficiency of transmitting compressed HD video, IMT, through its Nucomm and RF Central product lines, offers various products with encoders and decoders implemented using H.264/MPEG4 video compression. H.264/MPEG4 is the latest

COFDM transmission has been a workhorse of the ENG/OB microwave world for years, known for its robust link performance in non-line-of-sight (NLOS) conditions. It simplifies wireless transmission challenges and reduces setup time for sports and news. IMT couples its Nucomm and RF Central COFDM transmitters with diversity receivers to greatly

IMT’s Nucomm and RF Central products offer solutions that not only improve workflow, but are also cost-effective to implement and maintain. Simplified, intuitive user interfaces and preset features reduce the learning curve and require minimal special skills for operation. IMT’s products are smaller in size, lighter in weight and use less power, enabling the transmission of HD-quality video over existing SD links without sacrificing performance. Diversity receivers also eliminate the need to aim directional antennas. COFDM transmission, meanwhile, ensures robustness, as it reduces setup time for sports and news. Taking advantage of converging technologies capitalises on these efficiencies, allowing broadcasting personnel to focus on creative solutions for superior content.


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Table of Contents for the Digital Edition of In Broadcast - December 2011/January 2012

In Broadcast - December 2011/January 2012
Content
Immortal Images: Nuoda & Film Factory
Film Tails Out
IABM Report Revieals New Insights
Masstech Emerald 7.5 LE Preserves Vital Assets
Sneak Peek
Robotics in the Newsroom
Sislive America's World Cup
Expo World Travel Comments on Services
Transcoding: Getting There Faster
In Broadcast - December 2011/January 2012 - In Broadcast - December 2011/January 2012
In Broadcast - December 2011/January 2012 - 2
In Broadcast - December 2011/January 2012 - Content
In Broadcast - December 2011/January 2012 - Immortal Images: Nuoda & Film Factory
In Broadcast - December 2011/January 2012 - 5
In Broadcast - December 2011/January 2012 - 6
In Broadcast - December 2011/January 2012 - 7
In Broadcast - December 2011/January 2012 - 8
In Broadcast - December 2011/January 2012 - 9
In Broadcast - December 2011/January 2012 - 10
In Broadcast - December 2011/January 2012 - 11
In Broadcast - December 2011/January 2012 - 12
In Broadcast - December 2011/January 2012 - 13
In Broadcast - December 2011/January 2012 - 14
In Broadcast - December 2011/January 2012 - 15
In Broadcast - December 2011/January 2012 - 16
In Broadcast - December 2011/January 2012 - 17
In Broadcast - December 2011/January 2012 - 18
In Broadcast - December 2011/January 2012 - 19
In Broadcast - December 2011/January 2012 - Film Tails Out
In Broadcast - December 2011/January 2012 - IABM Report Revieals New Insights
In Broadcast - December 2011/January 2012 - 22
In Broadcast - December 2011/January 2012 - 23
In Broadcast - December 2011/January 2012 - 24
In Broadcast - December 2011/January 2012 - 25
In Broadcast - December 2011/January 2012 - 26
In Broadcast - December 2011/January 2012 - Masstech Emerald 7.5 LE Preserves Vital Assets
In Broadcast - December 2011/January 2012 - Sneak Peek
In Broadcast - December 2011/January 2012 - 29
In Broadcast - December 2011/January 2012 - 30
In Broadcast - December 2011/January 2012 - 31
In Broadcast - December 2011/January 2012 - 32
In Broadcast - December 2011/January 2012 - 33
In Broadcast - December 2011/January 2012 - 34
In Broadcast - December 2011/January 2012 - 35
In Broadcast - December 2011/January 2012 - 36
In Broadcast - December 2011/January 2012 - 37
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In Broadcast - December 2011/January 2012 - 40
In Broadcast - December 2011/January 2012 - 41
In Broadcast - December 2011/January 2012 - 42
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In Broadcast - December 2011/January 2012 - 46
In Broadcast - December 2011/January 2012 - 47
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In Broadcast - December 2011/January 2012 - 49
In Broadcast - December 2011/January 2012 - 50
In Broadcast - December 2011/January 2012 - 51
In Broadcast - December 2011/January 2012 - 52
In Broadcast - December 2011/January 2012 - 53
In Broadcast - December 2011/January 2012 - 54
In Broadcast - December 2011/January 2012 - Robotics in the Newsroom
In Broadcast - December 2011/January 2012 - 56
In Broadcast - December 2011/January 2012 - 57
In Broadcast - December 2011/January 2012 - 58
In Broadcast - December 2011/January 2012 - 59
In Broadcast - December 2011/January 2012 - 60
In Broadcast - December 2011/January 2012 - 61
In Broadcast - December 2011/January 2012 - 62
In Broadcast - December 2011/January 2012 - 63
In Broadcast - December 2011/January 2012 - 64
In Broadcast - December 2011/January 2012 - 65
In Broadcast - December 2011/January 2012 - 66
In Broadcast - December 2011/January 2012 - 67
In Broadcast - December 2011/January 2012 - Sislive America's World Cup
In Broadcast - December 2011/January 2012 - 69
In Broadcast - December 2011/January 2012 - 70
In Broadcast - December 2011/January 2012 - 71
In Broadcast - December 2011/January 2012 - 72
In Broadcast - December 2011/January 2012 - 73
In Broadcast - December 2011/January 2012 - Expo World Travel Comments on Services
In Broadcast - December 2011/January 2012 - 75
In Broadcast - December 2011/January 2012 - 76
In Broadcast - December 2011/January 2012 - 77
In Broadcast - December 2011/January 2012 - 78
In Broadcast - December 2011/January 2012 - 79
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In Broadcast - December 2011/January 2012 - 88
In Broadcast - December 2011/January 2012 - 89
In Broadcast - December 2011/January 2012 - 90
In Broadcast - December 2011/January 2012 - 91
In Broadcast - December 2011/January 2012 - Transcoding: Getting There Faster
In Broadcast - December 2011/January 2012 - 93
In Broadcast - December 2011/January 2012 - 94
In Broadcast - December 2011/January 2012 - 95
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