The 2014 NAB Show has come and gone, and although attendance was strong, this year’s edition didn’t have quite the buzz that I expected. Given all that is happening with UHDTV currently, that’s surprising: We are seeing a transformation of television into something very different from traditional models, including demonstrations of next-generation broadcast systems (ATSC 3.0), more powerful encoders (HEVC), and a migration to IP-based video production facilities (the cloud, AVB).
I spent three and a half days at the show, taking it all in while setting aside some time to present a paper at the Broadcast Engineering Conference on the current state of wireless AV connectivity and moderating a Wednesday Super Session on the future of video technology. If I really had to pick one word to characterize this year’s show, it would be “flux.”
Some trends were clear. The Japanese brands (aside from Canon) continue to down-size their booths as their business models shift away from traditional cameras, switchers, recording devices, and monitors. There were numerous companies showing cloud-based storage and media delivery over IT networks, and more than a few booths featured demos of HEVC H.265 encoding and decoding; most of it done with software.
Only a handful of booths emphasized monitors, and some of those had super-sized screens for digital signage out for inspection. In the north and central halls, you could find the traditional purveyors of broadcast transmitters, antennas, and coaxial cable, along with microphones and conventional audio products. But the emphasis seemed to be on “connected” anything – video, audio, cloud storage and delivery, and even wireless cameras for field acquisition and live events.
Given the sheer number of booths, it was difficult to compile a “pick hits” list, but I’ll give it a shot. To me, these companies/products/demos made the trip to Las Vegas worthwhile (and having traveled there over 70 times in the past 20 years, that’s saying a lot!).
Visionary Solutions may not be on your radar, but these clever folks are building some impressive hardware and software codecs at affordable prices. This year, they rolled out their PackeTV system, an end-to-end IP-based video delivery product with scheduling, recording, security, and delivery of real-time and recorded H.264 video, all rolled into one. The graphical user interface (GUI) for controlling the system was well-designed and easy to figure out.
LG and Gates Air had an impressive demo of an ATSC 3.0 concept broadcast. They combined Quad HD, 2K, and SD video programs into one 6 MHz channel, using HEVC encoding and decoding. The signals were encoded at 14, 1.6, and .98 Mb/s respectively, and the signal-to-noise threshold for the SD cast was just 1.5 dB. Multipath sets emulating mobile reception were also demonstrated with the 2K and SD streams holding up very well even at 50 mph.
Sony demonstrated a beautiful 30-inch OLED reference monitor that will soon take its place in the existing Trimaster series. This is a home-grown product and employs the same top-emission system with optical bandpass filters found on the 17-inch and 25-inch products. No price has been announced yet, and Sony has a real challenge in trying to figure out what that price should be as its customers aren’t willing to shell out 1990s bucks anymore for reference displays.
Altera had a clever demo of 12 Gb/s HD-SDI streaming over a piece of “conventional” coaxial cable. 3G HD-SDI has a nominal data cap of 3 Gb/s, so this demo used linked HD-SDI streams to hit the magic number (coincidentally, the data rate for a Quad HD video stream with a 60 Hz refresh rate and 4:2:2 coding). The coax link was 60 feet long and the transmission was flawless, aside from some hiccups on the PC playout server.
Ericsson showed there is more than one way to stream live 4K content. They set up a system that transported a live Quad HD video stream (3840x2160p/60) from a server in England, through satellite and fiber links, to the Ericsson and Intelsat booths at the show. But they used conventional H.264 encoding, breaking the 4K signal into 2K quadrants and using their Simulsync process to stich them together at the receiving end in a seamless presentation on an 84-inch monitor.
NHK once again had their 8K Super Hi-Vision booth set up, but this time they were streaming live 8K (7680×4320) content from a new, compact 4-pound camera head. The signals were broadcast across the booth in two separate streams on a standard UHF channel, using 4096 QAM at 91 MB/s. Half of the data traveled as a horizontally-polarized signal and the other half as a vertically-polarized signal, both on UHF channel 36. (At that frequency, you can achieve about 20 dB separation between polarization angles.)
Haivision was demonstrating their Secure Reliable Transport (SRT) system over at the Renaissance Hotel. SRT is a hardware/software overlay for existing Haivision encoder/decoder products that is intended to better manage end-to-end streaming over public Internet connections. It offers adaptive streaming rates and two levels of encryption (AES 128-bit and 256-bit). SRT is positioned as an alternative to more expensive satellite backhaul links and dedicated MPLS point-to-point connections.
Korea’s Electronics and Telecommunications Institute (ETRI) had a small but intriguing demo of facial recognition linked to ad servers. The recognition system is built into a standard TV and has a range of about 10 feet, can discriminate between older and younger viewers, and will recognize a face turned 45 degrees to the right or left of center. An appropriate advertisement for the viewer is then displayed during a commercial break.
Fraunhofer HHI always has clever technology demos at NAB, and this year they spotlighted real-time software-based HEVC H.265 encoding and decoding at bit rates up to 40 Mb/s. They also showcased a real-time, hardware-based H.265 decoder using an Altera Stratix V FPGA. This decoder can handle bit rates to 80 MB/s and uses standard interfaces for set-top box designs. Fraunhofer also had an intriguing demo of surround sound playback for tablets in a nearby isolation booth.
BlackMagic Design continues to introduce powerful camera systems at bargain basement prices. Their new Ursa 4K field/studio camera has a huge 10-inch LCD monitor, touchscreen control, RAW and ProRes recorders, and upgradable Super 35mm shutter. The EF lens-compatible version lists at $5,995 while the PL-compatible version is $6,495. Their Studio Camera 4K, also equipped with the 10-inch LCD monitor and 12 GB HD-SDI connections, had an even more amazing price – $2,995.
Intel showed a clever use for Thunderbolt technology: Using a display interface for file exchanges. Thunderbolt runs on the DisplayPort physical layer and has a maximum speed of 20 Gb/s. By using a simple mini or regular DisplayPort cable; two MacBooks, two Windows laptops, or a MacBook/Win laptop can link together for file transfers, working just like a 10GigE network connection.
Panasonic showed it still has game after shutting down plasma manufacturing. Two new large digital 4K LCD displays were up and running in their booth – an 84-inch model (TH-84LQ7OU) and a 98-inch model (TH-98LQ7OU). We’ve seen the 84-inch LG Display LC glass cut before offered by other manufacturers, but the 98-inch hasn’t been in wide circulation. These will replace the 85-inch and 103-inch plasma monitors previously offered.
Finally, Christie had regular screenings to show off its new laser cinema projector system. This projector uses two sets of color primaries and matching eyewear, using wave division multiplexing to achieve a high degree of left eye/ right eye separation. According to a Christie rep, the system can achieve a brightness level of 72,000 lumens, and what was interesting to me was virtually no difference in image brightness through the glasses or without them.
Posted by Pete Putman, April 18, 2014 11:33 AM
About Pete PutmanPeter Putman is the president of ROAM Consulting L.L.C. His company provides training, marketing communications, and product testing/development services to manufacturers, dealers, and end-users of displays, display interfaces, and related products.
Pete edits and publishes HDTVexpert.com, a Web blog focused on digital TV, HDTV, and display technologies. He is also a columnist for Pro AV magazine, the leading trade publication for commercial AV systems integrators.