NHK and Mitsubishi Electric Corporation Successfully Develop World's First HEVC Encoder for 8K "Super Hi-Vision"

  NHK and Mitsubishi Electric Corporation Successfully Develop World's First
  HEVC Encoder for 8K "Super Hi-Vision"

Business Wire

TOKYO -- May 09, 2013

NHK (President: Masayuki Matsumoto) and Mitsubishi Electric Corporation
(President & CEO: Kenichiro Yamanishi) have jointly developed the world's
first HEVC^1) encoder for 8K ultra HDTV "Super Hi-Vision" (hereinafter
referred to as "SHV").

HEVC encoder (w 431 x d 496 x h 312 mm) (Photo: Business Wire)

HEVC encoder (w 431 x d 496 x h 312 mm) (Photo: Business Wire)

SHV is the broadcasting medium of the near future. It makes viewers feel like
they are really at the heart of the action, with 16 times the number of HD
pixels and a 22.2 multichannel surround sound experience.

HEVC is due to be recognized as an international standard this year. It offers
about double the data compression of AVC^2), and about four times that of the
MPEG-2 standard currently employed for digital HDTV broadcasting.

The high-volume SHV images are divided into 17 horizontal rows. The parallel
processing of these rows makes it possible to achieve real-time coding of SHV
images. The deterioration of picture quality at the row boundaries has been
lessened by having rows share data concerning the speed, direction, etc. of
moving objects. (See Fig. 1)

NHK and Mitsubishi Electric Corporation are pursuing research and development
of real-time coding of the 120 Hz frame frequency of SHV.

The HEVC encoder will be displayed at the NHK Science & Technology Research
Laboratories Open House 2013, which will take place from May 30th to June 2nd.

1)  HEVC (High-Efficiency Video Coding):
     MPEG-H HEVC/H.265. A video coding standard currently under joint
     standardization project of the ISO/IEC (International Organization for
     Standardization / International Electrotechnical Commission) and the ITU
     (International Telecommunication Union).

2)   AVC (Advanced Video Coding):
     MPEG-4 AVC/H.264. A video coding standard developed by the ISO/IEC and
     the ITU. It provides about double the video compression of the current
     MPEG-2 standard for digital HDTV.


- Features of HEVC
Video coding technology divides a frame into small blocks referred to as
macroblocks. The prediction and transformation coding of the images is
conducted in each block.
HEVC offers variable blocks that can handle up to 64x64 pixels, changing the
size according to texture, while AVC has relied on a fixed macroblock size of
16x16 pixels. It achieves both high compression and high resolution.

- Features of the HEVC encoder
The SHV screen is divided in 17 rows made up of 7,680 x 256 pixels. The coding
in each of the rows is processed simultaneously. Data in each row is shared
with the row immediately above and below, thereby lessening the deterioration
in picture quality that occurs at the row boundaries.

< Specifications of HEVC encoder for SHV >
Video coding scheme                  MPEG-H HEVC/H.265
                                      Main 10 profile at Level 6.1
                                      7680 x 4320 pixels
Input/output resolution, frame rate   60 Hz frame frequency (60 frame per
Chroma format                         4:2:0
Color precision                       10 bit
Input/output interface               3G-SDI x 17

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