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Encyclopedia > 4320p

Super Hi-Vision, also known as Ultra High Definition Video or UHDV and UHD is a digital video format, currently proposed by NHK of Japan. Video is the technology of electronically capturing, recording, processing, storing, transmitting, and reconstructing a sequence of still images which represent scenes in motion. ... NHK Broadcasting Center in Shibuya, Tokyo Domo-kun, the mascot of NHK satellite channel BS-2 NHK (, Nippon Hōsō Kyōkai), or the Japan Broadcasting Corporation, is Japans public broadcaster. ...

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.
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. 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 resort to pixel shifting to bring it to 7680 × 4320. Image File history File links UHDV.svg‎ Ultra High Definition Video shown in comparison with other popular digital video formats. ... Image File history File links UHDV.svg‎ Ultra High Definition Video shown in comparison with other popular digital video formats. ... This example shows an image with a portion greatly enlarged, in which the individual pixels are rendered as little squares and can easily be seen. ... The display resolution of a digital television or computer display is the number of pixels (or maximal image resolution) that can be displayed on the screen, usually given as a product of the number of columns (horizontal, X) and lines (vertical, Y) making up the aspect ratio. ... Projection screen in a home theater, displaying a high-definition television image. ... A specially developed CCD used for ultraviolet imaging in a wire bonded package. ...

Contents

Capacity

18 minutes of uncompressed UHDV footage consumes 3.5 terabytes of data and 1 minute of footage consumes 194 gigabytes. If 1920×1080p60 high definition video has a bitrate of 60 Mbit/s using current MPEG-2 compression technologies, then 4 times the width and 4 times the height will roughly require 16 times the bitrate, which translates to 100 GB for 18 minutes of UHDV, or 6 GB per minute if MPEG-2 video compression was used. If H.264 (MPEG-4 AVC) or VC-1 video compression technologies was used then roughly half the bitrate of MPEG-2 would be required to achieve the same quality, meaning 50 GB for 18 minute of UHDV, or 3 GB per minute. This would mean that a 12cm Holographic Versatile Disc at 3 micrometer separation of different colored tracks (with a capacity of 3.9TB) would be able to store roughly 11 hours of MPEG-2 or 22 hours of H264 or VC1 compressed UHDV, compared to the 18 and a half minutes of uncompressed UHDV. Additionally, an eight layer Blu-ray disc (with a capacity of 200GB) would be able to store approximately 36 minutes of MPEG-2 compressed UHDV, or 72 minutes of H264 or VC-1] compressed UHDV, compared to the 1 minute of uncompressed UHDV. A 50TB Protein Coated Disc would be able to hold over 94 hours of H.264/AVC/VC-1 compressed UHDV, but generally that would be unnecessary, for a 50TB PCD would be able to hold 4 hours of uncompressed UHDV. Once Stabilizing Ferroelectric Materials is accomplished it would be able to store 1024 hours of uncompressed UHDV and 24064 hours of H.264/AVC/VC-1 compressed UHDV. A terabyte is a unit of measurement in computers. ... A gigabyte (symbol GB) is a unit of measurement in computers of one thousand million bytes (the same as one billion bytes in the short scale usage). ... MPEG-2 should not be confused with MPEG-1 and 3 Audio Layer II (MP2) MPEG-2 is a standard for the generic coding of moving pictures and associated audio information [1]. It is widely used around the world to specify the format of the digital television signals that are... H.264, or MPEG-4 Part 10, is a high compression digital video codec standard written by the ITU-T Video Coding Experts Group (VCEG) together with the ISO/IEC Moving Picture Experts Group (MPEG) as the product of a collective partnership effort known as the Joint Video Team (JVT). ... VC-1 is the informal name of the SMPTE 421M video codec standard. ... Picture of a HVD by Optware. ... Blu-ray discs Blu-ray Disc is a next-generation optical disc format jointly developed by a group of leading consumer electronics and PC companies called the Blu_ray Disc Association (BDA), which succeeds the Blu_ray Disc Founders (BDF). ... Protein-Coated Disc (PCD) is a theoretical optical disc technology currently being developed by Professor V Renugopalakrishnan of Harvard Medical School. ... Ferroelectric materials have historically been difficult to stabilize on the nano-scale as this was due to ineffective methods of screening the charges (ferroelectric materials possess spontaneous and reversible electric dipole moments). ...


Preliminary reactions

Preliminary response of the UHDV was somewhat negative. This was not because of the lack of the promised technology, but more in the fact that it was too good. Some viewers got motion sickness when viewing the video image because the image was so close to reality.[1] Motion sickness is a condition in which the endolymph (the fluid found in the semicircular canals of the inner ears) becomes stirred up, causing confusion between the difference between apparent perceived movement (none or very little), and actual movement. ...


In November 2005 NHK demonstrated a live relay of Super Hi-Vision (UHDV) program over a distance of 260 km by a fiberoptic network. 24 gigabit speed was achieved using DWDM (dense wavelength division multiplex) method with a total of 16 different wavelength signals. A gigabit is a unit of information or computer storage, abbreviated Gbit or sometimes Gb. ... The original version of this article was based on FOLDOC, with permission In telecommunications wavelength division multiplexing (WDM) is a technology which multiplexes several optical carrier signals on a single optical fibre by using different wavelengths (colours) of laser light to carry different signals. ...


The RED ONE

Red Digital Cinema Camera Company claims their camera to be Ultra High Definition. Although the maximum resolution is only 2540p. There are very few or no other articles that link to this one. ...


References

  1. ^ New York Times

External links

  • NHK 2005 article on Super Hi-Vision and its home application
  • NHK Digital Broadcasting Technology
  • UHDV at Whatis.com
  • Ultra high resolution television (UHDV) prototype
  • The New York Times: Just Like High-Definition TV, but With Higher Definition
  • Japan demonstrates next-gen TV broadcast
  • Europe gets glimpse of HD future
  • HDTV Org Independent guide to High Definition TV

 
 

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