Real-Time HDTV Broadcast From USA To Japan Enabled By Advanced Networks

Jan 19, 2005

Dignitaries and researchers attending the Japan Gigabit Network 2 (JGN2) Symposium in Osaka, Japan today listened and watched as Internet visionary Larry Smarr gave the keynote presentation on a large screen above the podium. Unlike traditional keynote talks, however, Smarr was 5,000 miles away in Seattle, Washington.

Advances in transmitting live, uncompressed high-definition television (HDTV) signals over optical networks are enabling true tele-presence, in which participants feel they are together in the same room. The iHD1500 broadcast system used for this event was developed by the University of Washington’s Research Channel. A server in Seattle transmitted high-definition digital video and digital audio at very high quality and very low latency to a client system in Osaka. Data went over the University of Washington campus network to the Pacific Northwest GigaPoP (PNWGP), then via a 10 Gigabits per second (Gbps) transpacific link from Seattle to Tokyo, and then via the JGN2 to Osaka. The transpacific link was provided by the Internet Educational Equal Access Foundation (IEEAF), which is managed by the PNGWG in Seattle and the WIDE project in Japan.

Smarr, director of the California Institute for Telecommunications and Information Technology [Cal-(IT)²] and principal investigator of the National Science Foundation-funded OptIPuter project, talked about the emergence of a new cyberinfrastructure based on network parallelism, in which distributed clusters and instruments are tightly coupled using multiple wavelengths of light, or ‘lambdas,’ on single optical fibers. The ability to stream several gigabits of data in parallel, like in this HDTV transmission, is enabling new modes of communication. “The clear crisp images and sounds that HDTV affords make for better dialogue and interaction with colleagues over distances,” said Smarr, who is also a professor at the University of California, San Diego (UCSD) Jacobs School of Engineering. “The goal is to make these sorts of communication technologies persistent, so that far-away colleagues appear to be just beyond the ‘Looking Glass’.”

In his talk, Smarr noted that Cal-(IT)² is incorporating advanced video-over-fiber networking technologies into its two new buildings at UCSD and UC Irvine. Facilities are slated to include a digital cinema and HDTV production facility, as well as dedicated meeting and public spaces with large-format displays to support tele-presence and collaboration. Said Smarr: “Every type of research will benefit if we can tear down walls and let scientists and engineers talk and work together in real time as if they were in the same room -- even if they’re thousands of miles away.”

Tomonori Aoyama, a professor of Information and Communication Engineering at the University of Tokyo, chair of the JGN2 management committee, and chair of the Symposium’s keynote session, expressed his sincere gratitude to all who contributed to its success. “The goal of the Symposium was to present the research and development activities taking place using Japan’s JGN2, operated by the National Institute of Information and Communications Technology (NiCT),” said Aoyama. “I am very pleased that we used JGN2 and IEEAF broadband network technologies during the featured remote presentation by Dr. Smarr to explain the needs and applications for these technologies.”

JGN2, an advanced network testbed for research and development, is both a national and international testbed. It supports high-speed networking technologies and application advancements. Nationally, JGN2 is a 20 Gbps backbone network that connects dozens of universities in all Japanese prefectures. Internationally, JGN2 connects Tokyo via a 10 Gbps link to the StarLight facility in Chicago, where it peers with the USA’s National LambdaRail, Abilene and other advanced international, national, and regional research and education networks.

“We are not using traditional ‘best-effort’ networks, which is a milestone for all of us,” explained Ron Johnson, Vice President of Computing & Communications at University of Washington. “We are working with colleagues at JGN2, WIDE, IEEAF, PNWGP, StarLight and other locations worldwide to create ‘deterministic’ networks using multiple lambdas over optical fibers, to guarantee the bandwidth speeds and latency in order to do real-time HDTV transmission. We will continue to pursue this, to make high-quality HDTV transmission both persistent and ubiquitous.”

Source: UCSD

Explore further: Sony tells AFP it still plans movie release

add to favorites email to friend print save as pdf

Related Stories

People finding their 'waze' to once-hidden streets

10 hours ago

When the people whose houses hug the narrow warren of streets paralleling the busiest urban freeway in America began to see bumper-to-bumper traffic crawling by their homes a year or so ago, they were baffled.

Identity theft victims face months of hassle

10 hours ago

As soon as Mark Kim found out his personal information was compromised in a data breach at Target last year, the 36-year-old tech worker signed up for the retailer's free credit monitoring offer so he would ...

Observers slam 'lackluster' Lima climate deal

10 hours ago

A carbon-curbing deal struck in Lima on Sunday was a watered-down compromise where national intransigence threatened the goal of a pact to save Earth's climate system, green groups said.

Your info has been hacked. Now what do you do?

10 hours ago

Criminals stole personal information from tens of millions of Americans in data breaches this past year. Of those affected, one in three may become victims of identity theft, according to research firm Javelin. ...

New Bond script stolen in Sony hack

10 hours ago

An "early version" of the screenplay for the new James Bond film was the latest victim of a massive hacking attack on Sony Pictures Entertainment, its producers said in a statement on their website Sunday.

Ag-tech could change how the world eats

16 hours ago

Investors and entrepreneurs behind some of the world's newest industries have started to put their money and tech talents into farming - the world's oldest industry - with an audacious agenda: to make sure there is enough ...

Recommended for you

Sony tells AFP it still plans movie release

just added

Sony Pictures boss Michael Lynton denied Friday the Hollywood studio has "caved" by canceling the release of "The Interview," and said it still hoped to release the controversial film.

Impoverished North Korea falls back on cyber weapons

12 hours ago

As one of the world's most impoverished powers, North Korea would struggle to match America's military or economic might, but appears to have settled on a relatively cheap method to torment its foe.

Five ways to make your email safer in case of a hack attack

12 hours ago

The Sony hack, the latest in a wave of company security breaches, exposed months of employee emails. Other hacks have given attackers access to sensitive information about a company and its customers, such as credit-card ...

2012 movie massacre hung over 'Interview' decision

13 hours ago

When a group claiming credit for the hacking of Sony Pictures Entertainment threated violence against theaters showing "The Interview" earlier this week, the fate of the movie's big-screen life was all but ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.