Archive for May, 2009

Standard Definition Format

Friday, May 29th, 2009

This is the most common channel type. The resolution is always 704 x 480 pixels and is roughly equal in quality to the current analog resolution. All channels will initially be broadcast in this format unless the channel has opted for a higher resolution format. The Standard Definition Format (SD) has two options on formatting the signal. 480i is where half of the picture updates every 60th of a second. 480p the full picture updates every 60th of a second. Standard Definition format channels can be broadcast in both 4:3 and 16:9 aspect ratios.

How digital TV works

Friday, May 22nd, 2009

Each broadcaster is given one digital channel that they can do with as they wish. Each channel can broadcast multiple sub-channels which can carry different programming. Since each channel has an allowed 19.39 Mbps transfer rate each broadcaster can choose how they want to split that bandwidth up. They can have multi lower resolution channels or one super high def channel. Broadcasters can currently chose from 2 different resolutions. The three formats are 704×480 pixels, 1280×1080 pixels and 1980×1080 pixels.

Why Analog is outdated

Friday, May 22nd, 2009

With the switchover to digital TV in full stride it is easy to wonder what is wrong with Analog in the first place. It has after all served us for many years and we have gotten along just fine with it. The answer lies in the resolution mostly. When you compare analog TV and DVD you can clearly see a big difference in the picture quality. TV broadcasters are already in fear of losing viewer to video on demand like Satellite and the Internet. On the Internet you can frequently find full high resolution videos and the cable companies have to keep up with current market trends. Now with digital TV, resolution can catch up with the rest of the digital world.

Analog Switch-off dates

Friday, May 22nd, 2009

While many broadcasters have already switched over to digital TV there are still some that use analog or both to serve their customer base. There is however a official switch-off date for most countries. Analog switch off is scheduled for June 12, 2009 in the United States, August 31, 2011 in Canada, July 24, 2011 in Japan and 2012 in the United Kingdom. This should be ample time for consumers to get a digital converter box or buy a new DTV ready television set. While there are not too many converter boxes on the market at this time there are more and more creeping up as we get closer to the switch-off dates.

Formats and Bandwidth

Friday, May 22nd, 2009

Digital TV supports a wide variety of picture formats which makes it attractive to broadcasters. Broadcasters can choose their own combinations of size, aspect ratio and interlacing. HDTV for instance is one of the best uses of digital television and uses one of two high definition formats (1280 x 720 or 1920 x 1080 pixels in a 16:9 aspect ratio). Standard definition TV using digital programming uses a 4:3 aspect ratio and a definition around 640 x 480 pixels. Digital TV can be broadcast at a data rate of upto 19 megabits per second to 2.375 Megabytes per second to give you an idea of how fast the speed is.

Intro to Digital TV

Friday, May 22nd, 2009

Over the next little while all of the channels you have been watching for years will switch over to digital programming from analogue. Digital TV is the new signal put out by broadcasting companies and older television sets will have to either get a converter box or be replaced by digtal tv ready sets. The switch over started in 2006 in Luxembourg and is now making its way around the world. The US is in the middle of switchover and most stations have listed deadlines for conversion.

The DVB Project has guaranteed stability…

Tuesday, May 19th, 2009

The DVB Project has guaranteed stability and continuity in the introduction of standards now adopted throughout the world. Applications embrace all platforms and address the many services demanded by an increasingly sophisticated public today.

The world’s media landscape moves forward year-by-year, new developments opening up new avenues and creating new opportunities on a scale never before experienced in our industry.

DVB World conferences have charted these developments over the years and provided the opportunity for the otherwise busy professionals to keep in touch with the trends. Now approaching its eighth edition, the DVB World conference in 2008 promises to be just as exciting and enlightening as its predecessors.

DVB World 2008 will be held in Budapest on the banks of the Danube. The Intercontinental Hotel, with its scenic location and yet proximity to the heart of the city, is an ideal venue.

DVB World conferences…

Tuesday, May 19th, 2009

DVB World conferences present every year the latest developments in digital broadcasting. As speakers and panellists it features all the leading personalities of the DVB project as well as all those who are directly involved in the pioneering work of standardisation, development and implementation of the various aspects of the DVB — the people at the coalface of the new developments.

DVB World conferences are an event not to be missed by anyone who is seriously involved in the design and implementation of digital broadcasting systems. If you are in digital media, you can’t afford not to attend.


Tuesday, May 19th, 2009

Digital technology, applied to broadcasting, continues to develop. New applications are announced at an increasingly frequent basis and the DVB standards are at the core of most. As the adoption of DVB standards and the introduction of new standards increase, it becomes more difficult to keep abreast of developments, hence the need for regular comprehensive updates. DVB World fulfills this need.