Ultra High Definition Video

Super Hi-Vision, also known as Ultra High Definition Video, UHDV, Ultra High Definition Television, UHDTV and UHD is an experimental digital video format, currently proposed by NHK of Japan.

Super Hi-Vision's main specifications:

• Resolution: 7,680 × 4,320 pixels (16:9) (approximately 33 megapixels)
• Frame rate: 60 frame/s.
• Audio: 22.2 channels
  • 9 — above ear level
  • 10 — ear level
  • 3 — below ear level
  • 2 — low frequency effects
• Bandwidth: 21 GHz frequency band
  • 600 MHz, 500~6600 Mbit/s bandwidth

UHDV resolution shown in comparison to other digital video formats.

The new format with a resolution of 7,680 × 4,320 pixels is four times as wide and four times as high (for a total of 16 times the pixel resolution) as existing HDTV, which has a maximum resolution of 1920 × 1080 pixels. According to the Yomiuri Shimbun, the Japanese Ministry of Internal Affairs and Communications will be starting a public-private partnership to develop technology for UHDV in the hopes of setting an international standard for Super Hi-Vision in addition to broadcasting with it beginning in 2015

Experimental technology

Because this format is highly experimental, NHK researchers had to build their own prototype from scratch. In the system demonstrated in September 2003 they used an array of 16 HDTV recorders to capture the 18-minute-long test footage.

The camera itself was built with four 2.5 inch (64 mm) CCDs with a combined resolution of only 3840 × 2048. They then resorted to pixel shifting to bring it to 7680 × 4320.[1]

The system was demonstrated at Expo 2005, Aichi, Japan, the NAB 2006 and NAB 2007 conferences, Las Vegas, and at IBC 2006, Amsterdam, Netherlands. A review of the NAB 2006 demo was published in a Broadcast Engineering e-newsletter.^[2]

In November 2005 NHK demonstrated a live relay of Super Hi-Vision (UHDV) program over a distance of 260 km by a fiber optic network. Using dense wavelength division multiplex (DWDM), 24 gigabit speed was achieved with a total of 16 different wavelength signals.

An UHDTV camera

On December 31, 2006, NHK demonstrated a live relay of their annual Kōhaku Uta Gassen over IP from Tokyo to a 450 inch screen in Osaka. Utilizing a codec developed by NHK, the video was compressed from 24 Gbps to 180-600 Mbps and the audio was compressed from 28 Mbps to 7-28 Mbps

http://en.wikipedia.org/wiki/Ultra_High_Definition_Video