The National Institute of Information and Communications Technology, in collaboration with Kanagawa Institute of Technology and Nara Institute of Science and Technology, has succeeded for the first time in the world in delivering the Sapporo Snow Festival, which is being held in Sapporo, Hokkaido, in 8K live video. 8K video has an ultra-high-definition image quality of 4 million pixels, which is four times that of 4K TVs sold in ultra-high image quality, and this success is likely to be a major step toward the practical application of 3,300K video distribution at the 2020 Tokyo Olympics.

 According to the National Institute of Information and Communications Technology, the experiment conducted is to encrypt, decrypt, and distribute 8K uncompressed live video in real time.The 8K video data taken at the Sapporo Snow Festival venue was sent to the public venue in Osaka City and decoded inside the venue.Although multiple encryption implementation methods were used for data, the short-term encryption implementation method, which has been an issue until now, manages the communication paths of the devices installed at the distribution source and destination collectively by remote control. It is possible to switch by time.

 The lines used are the domestic 2011 Gbps (* 100) backbone line operated by the National Institute of Information and Communications Technology since 1, and the academic information network of the National Institute of Informatics.As a result, a 100 Gbps line that traverses the Japanese archipelago from Hokkaido to Okinawa can be constructed, and 8K uncompressed video shot in Sapporo can be distributed by multicast (* 2) to bases nationwide.

 In 2015, the National Institute of Information and Communications Technology succeeded in multicast distribution of 8K uncompressed video, but at this time, security measures were not taken to prevent content tampering and eavesdropping on the way during distribution.
(* 1) One of the units of Gbps data transmission speed, which indicates how many billion bits (gigabits) of data can be sent per second.
(* 2) Multicast distribution Data transmission to multiple terminals at the same time on a computer network.

Kanagawa Institute of Technology

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