While 4K is slowly making its mark, Japan is busy formulating plans to introduce 8K satellite broadcasts on a nationwide scale, aiming to have everything in place by 2020. The timetable was recently laid out by Japans Ministry of Internal Affairs and Communications, and incorporates the nations switch to 4K broadcasts as well. To begin […]
While 4K is slowly making its mark, Japan is busy formulating plans to introduce 8K satellite broadcasts on a nationwide scale, aiming to have everything in place by 2020.
The timetable was recently laid out by Japans Ministry of Internal Affairs and Communications, and incorporates the nations switch to 4K broadcasts as well. To begin with, Japan is hoping to become the first country in the world to introduce 4K broadcasting nationally, with an ambitious target date of July 2014, just in time for the FIFA World Cup 2014. The plan is for Japans CS satellite broadcaster to carry programmes in 4K first, followed by the BS channel and finally, terrestrial TV stations.
Following this, Japans NHK public broadcasting service aims to carry out its first trials of 8K resolution in 2016, aiming to have the infrastructure in place to start broadcasting to the entire country in time for the 2020 Olympics.
NHKs targets might seem ambitious, but according to one report from DigiInfo TV, the broadcasters preparations are already well under way. Japans biggest broadcaster has already begun developing the equipment it needs to enable 8K broadcasts, co-developing a special camera with Astrodesign that incorporates a 33-megapixel image sensor.
In addition to this, NHK has also developed the first HEVC real-time codec for 8K video streaming in a collaborative effort with Mitsubishi Electric. HEVC, which was adopted as an international standard earlier this year, boasts four times the compression efficiency of MPEG2.
The video will be encoded at 85Mbps, said an NHK spokesperson.
Considering the encoder input, the signal is being compressed by a factor of 1/350 from 30Gpbs. In order to encode 8K video, we need to do this in real time by dividing the screen into 17 strips. By compressing the signal to 85Mbps, it allows us to transmit an 8K signal using just one satellite transponder.
Data about the direction and speed of moving objects is split across multiple segments, which helps to minimise any loss of image quality where the segments join together. To date, the encoding has only been done at 60Hz, but NHK says that itll be able to do the same thing at 120Hz as well.
Japans Ministry of Internal Affairs and Communications is hoping that nationwide availability of 4K and 8K resolution TV will help to boost consumer demand for the current crop of next-generation televisions that offer four times the resolution of standard HD TVs. 8K televisions, whenever they become available, would offer a fantastic 16 times the resolution of current HD TV.