AV Technology - April 2009 - (Page 45)

With UWB, 802.11a/b/g/n, and AvaLAN’s technology as examples, the bandwidth and speed are there, as well as enough diversity to choose the best technology for specific applications. Multimedia PowerPoint presentations and wireless video no longer have to jitter and lag. Test results by research company Burton Group indicated that 802.11n’s range of latency and jitter was quite acceptable for most applications. It took demanding uses, such as graphic design, CAD, and video production, to noticeably affect performance of the wireless network. As for HD, a 50 Mbps Blu-ray video bit rate is no problem for wireless extenders capable of 110 Mbps streaming. HD wireless transmission has definitely arrived. The customers are there — users and integrators are asking for wireless. And the reasons to implement are many. Projectors with built-in wireless capabilities are highly practical and becoming more commonplace. With wireless, multiple presenters can easily connect their laptops to a ceilingmounted projector without having to “pass the cable” or move to where the cable happens to be located. Wireless signal transmission has also driven much of the growth of the digital signage market — and vice versa. Wireless connectivity enables content delivery to locations that were previously difficult to reach with cable — especially in retrofit installations. For example, a growing application for digital signage is gas station pump-top displays. Without wireless transmission, getting the AV signal to these displays would require cutting troughs through concrete. Wireless also provides an elegant solution for installations with multiple screens. Because multi-point wireless extenders serve the dual function of extension and distribution, they simplify the process of synchronizing audio and video across multiple displays. “When many displays within eyeshot or earshot are all are several seconds to a minute apart from each other, you get a chaotic environment,” says Pheterson. “But with one media player, a wireless transmitter and receivers, they stay in step Wireless Projection with Video Introducing the Black Box® Wireless VGA Video Presentation System Wirelessly display presentations, including video and audio, from up to 200 feet away. » Collaborate with up to 254 Wi-Fi® laptop users. » No more swapping cables. » Works with any projector or display with a VGA port. » Connect it to the Web or your LAN. Projector not included. AC1130A See the video demo at: blackbox.com/go/vps | 888-225-6921 http://www.blackbox.com/go/vps http://www.blackbox.com/go/vps

Table of Contents Feed for the Digital Edition of AV Technology - April 2009

AV Technology - April 2009 Contents Perspective: Lost in a Cloud Precedent Corporate: Seven Rules of Thumb for the AV Technology Manager Government: Collaboration Will Help Reshape Federal Agencies Education: Moving Day Managing Digital AV Content Audiovisual Untethered Irvine’s Mobile Command & Control Vehicle AV with a View Product Forum: Revolabs Fusion Wireless Mic System Product Spotlight: Network Test Equipment Tech Horizons: Ever Thinner New Products Ad Index AV MO: Power Consumption in AV Devices

AV Technology - April 2009

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