Third European Patent of the CESNET Association

Prague, 31 May 2016. The CESNET association has obtained a European patent protecting its invention, which allows transferring a set of video signals with variable channel synchronization. The patent is titled Device for receiving video signals transmitted over a packet computer network.

The core of the invention lies in a new solution of video channel synchronization within a computer network transfer. Individual channels can be arbitrarily divided into groups with their own synchronization. This allows transferring through one device simultaneously, for example, a 4K signal, consisting of synchronized HD-sized quadrants, 3D signal with two synchronized images, and additional independent HD channels. Device transfer capacity can be reallocated among these types of signals in line with current needs. The device does not use a so-called frame buffer. This keeps delay to a minimum, in the range of milliseconds. All key logical circuits are located on the received end, which can therefore work with any transmitter.

The patented design is the result of CESNET’s research activities in the area of high-definition transmissions that take place in the Department of technologies for network applications headed by Dr. Ing. Sven Ubik. The technical solution filed under this patent is used in the industrial device called 4K Gateway. The invention is already protected by a patent in the Czech Republic as well as the United States. Obtaining a European patent is considered more difficult, because the European patent office is stricter when assigning patents than the US one. The patent acquisition procedure has taken approximately two and a half years, which is a relatively short period in the European sphere.

The newest European patent is the third one obtained by CESNET: In December 2014 it acquired the European patent for Devices for Group Optical Signal Transmission in Internet and Other Networks, followed the next year by Devices for Receiving High-Resolution Image Signal Transferred with Low Latency through an Asynchronous Computer Packet Network.

The CESNET Association was founded by Czech universities and the Academy of Sciences of the Czech Republic in 1996. It is engaged in research and development in information and communication technologies and builds and develops the CESNET national e-infrastructure for research and education. With its research activities and accomplishments, CESNET represents the Czech Republic in international projects, most notably the pan-European GÉANT network building project and grid projects (, and participates actively in their implementation. The association also works on the use of high-speed networks for sharing multimedia data both through synchronous video conferencing and shared applications, and asynchronous streaming.

Last change: 14.11.2017