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Posted by habshi on 12/23/05 00:09
Japanese researchers of NTT have developed a 'super high resolution'
compression system and screens for the generation of images after high
definition TV. The screen is based on the superhigh-resolution (SHR)
codec for video.
The core of the technology is the 1-chip HDTV codec LSIs (VASA chips)
that conform to MPEG-2 international standards. The SHR codec provides
an output four times the resolution of HDTV - 2160 pixels high x 3840
pixels wide, or 5760 x 1080 for long screens that combine existing
HDTV broadcasts.
Generally, the compression and decompression of large images having a
resolution in excess of HDTV required that the entire screen be
divided and processed in HDTV units. In this configuration, however,
information could not be exchanged between encoders, so picture
quality could differ among the encoders depending on the image.
To solve those lingering problems, NTT developed a cooperative
rate-control technology that enables realtime information exchange
between encoders. As a result, such variations in picture quality are
prevented and also higher-quality pictures are achieved, according to
the company.
In addition to real-time transmissions such as live broadcasts of
concerts and soccer matches at 'Satellite Stadiums,' this system can
be used for recording and playback, and so is expected to find
applications in SHR image fields of the future, including digital
cinema, stereo 3D TV, and multi-angle TV.
NTT plans to commercialize this technology with the aim of achieving
next-generation SHR video communications superior to HDTV and
promoting SHR video distribution services.
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