Topic: Ultra High Definition


Description:
Developed by NHK, a Japanese broadcast company, Ultra High-Definition or Super Hi-Vision is the next level up from today's high definition video technology. With the world shifting to higher resolution media meaning more pixels in a picture and more directional sound environments, the boundaries of true-to-life media are becoming a possibility. Not only will our walls at home become a portal into the world we live, but video and sound will be captured and projected at 7,680 x 4,320 (four times higher and wider than normal High Definition) or 33 mega-pixels at a wide screen aspect ratio of 16x9 with 22.2 directional surround sound.
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The Ultra-HD Difference


Basis:
As of right now only the country of Japan has taken this true to heart and plans to be fully broadcasting through the system by 2015. It was Japan who debuted the technology in 2002 during a public demonstration of a Ultra High Definition prototype television. From that point on, the research continues in full force. The current research on Ultra HD is aimed toward refining the quality of the UHDTV system and all of it's components.

Features:
- The system uses a video format with 7680 x 4320 pixels (16 times higher than current HDTVs) . It's the world’s first video format with 4000 scanning lines delivering ultra-clear, realistic three-dimensional images. Currently, only 2 cameras are able to capture video in Ultra-HD format, and can only capture about twenty minutes in a single day.

- The individual scanning lines are not visually noticeable even when relatively close to the screen, reflecting the high resolution of the system. What’s more, a wider viewing angle conveys a stronger sense of a reality.

- The new 3-D audio system will utilize 24 different loudspeakers which will dramatically enhance the audio presence. In comparison, common surround sound systems only use 5-7 speakers.

Practical Concerns:
-
The required storage space for a small 18-minute clip is approximately 3.5 terabytes. The hard disc would weigh six-hundred pounds.

- Electricity consumption is off the charts. An Ultra-HD prototype screen is capable of easily using more electricity than an average house would in a month.

- The camera used to record Ultra-HD weighs more than one-hundred pounds.

Applications:
- This new form of High Definition technology is quite a few years ahead of it's time. When you take into account that a measly eighteen minute clip in the Ultra-HD format will require over three terabytes (yes terabytes) of hard disk space, the format does not seem currently practical. With that being said, Panasonic has developed the world's largest plasma display that utilizes the Ultra-HD technology. The screen size is a ridiculous 150 inches, and consumes more power than your washer and dryer combined.
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Here the 150-inch is placed next to a typical 42-inch. Notice the difference?

Pansonic's 150'' Ultra HD Plasma

Terminology:
Resolution(7,680 x 4,230): number of distinct pixels in each dimension.
Pixel: the smallest known piece of information in an image.
Terabyte: 1024 gigabytes


Citations/References:
http://www.nhk.or.jp/digital/en/
http://www.wisegeek.com/what-is-ultra-hd.htm