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Japanese - 33 million pixel TV Standard |
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Written by Chris Hunter
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Americans are still stumbling today to upgrade their
ailing televisions to HD standards. Many do not realize that their friendly
broadcast over the waves is about to change. As America pushes the Hi-Def
deadline back, the Japanese are pushing forward with plans to drop their
"Hi-Vision" standard pioneered by NHK, who is a Japanese broadcaster . The Hi-Vision technology was also used on the JAXA moon mission. The communications ministry is pouring 300
million yen into the NHK project to develop and launch a higher quality 33.2 million pixel broadcast
standard by 2015. Due to the ailing USD, that is 2.735 million dollars.
The broadcast standard will be able to travel along 260
kilometers of fiber optic cable and carry 16 different wavelength signals. The
total bandwidth they have achieved in tests is 24 gigabit. Back in 2003 and
2005 NHK demonstrated the “Super-Hi-Vision ” technology.
Back then, there were 16 HDTV recorders hacked together recording 18 minutes of
footage. They took the resultant 3840 × 2048 image and "upscaled" it
through pixel shifting to 7680 × 4320 pixels or 4000 scan lines. Three years
later, the project is still advancing and has overcome many of the
hurdles they once had.
NHK has also developed a codec to compress the 24Gbps video
signal down to 180-600Mbps. The audio is dropped from 28 Mbps to 7-28Mbps. Go
ahead and read that again, video data rate of 24Gbps and a 24 channel audio data rate of 28Mbps. 18 minutes
of video will take up about 3.5 TB of data in a raw format. The image would be more palpable and vibrant than anything we can imagine. Yahoo news has the AFP article.
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