Media Links Partners with Seiko Solutions and Mainichi Broadcasting System for IP Transmission Demonstration of ISDB-T Broadcast Signals

Media Links Partners with Seiko Solutions and Mainichi Broadcasting System for IP Transmission Demonstration of ISDB-T Broadcast Signals

 Uses Precision Time Protocol (PTP) over Single Frequency Networks

Media Links, manufacturer and pioneer in Media over IP transport technology, announces today that in partnership with Seiko Solutions Inc. and Mainichi Broadcasting System, Inc. they have successfully conducted a unique demonstration of IP transmission of the Integrated Services Digital Broadcasting -Terrestrial (ISDB-T) standard using Precision Time Protocol over a Single Frequency Network (SFN). ISDB-T is a Japanese standard for digital television used by the country's television networks.

The three companies demonstrated the transmission of ISDB-T broadcast transport stream signals using PTP - Precision Time Protocol, a next-generation protocol for highly accurate time synchronization. Precision Time Protocol support enables the distribution of synchronous signals which are an absolute requirement for proper operation of Single Frequency Networks (SFN). SFN is a wireless network that broadcasts the same content on the same transmission frequency from multiple broadcasting stations. A Single Frequency Network is a means to extend the broadcasting coverage area without the use of additional frequencies.

A first demonstration of its kind in Japan using PTP master/slave synchronization, it was concluded that it results in the straightforward implementation of delivering content to the transmitting stations over an SFN network without major modifications of the SFN architecture. For uninterrupted broadcasting, especially in times of disasters, a more robust and resilient network is critical to distribute important public information. This technology implementation can be used for sending broadcast content over unstable paths including maritime/ocean transmission or long-distance low quality paths. Therefore, building a microwave base station is not required and this infrastructure can be implemented relatively quickly.

Work will continue toward the commercial realization of Single Frequency Networks (SFN) in Japan based on ISDB-T, IP and PTP.

The actual demonstration was carried out in two phases; a direct connection phase which verified the modulation/demodulation quality followed by a long distance transmission phase which confirmed the timing stability of the content.    

Media Links' MDP3020 SFN IP Media Gateway was used in the demonstration and is designed for IP distribution of digital television broadcasting signals. The MDP3020 uses the SMPTE 2022-2 standard for video signal distribution and supports Hitless Switching, enabling highly reliable IP transmission. Seiko Solutions provided the PTP equipment which is essential for very precise and accurate time synchronization, and Mainichi Broadcasting System operates the core terrestrial broadcasting network in Japan's Kansai region.

About Media Links 

 Media Links, a Technology and Engineering Emmy® Award winner is best known for providing its media over IP transport and switching solutions for the world's most watched sporting and entertainment events. The Company's product portfolio is used for broadcasting the Winter & Summer Olympics, World Cup Soccer and Football, Professional/Amateur American Football, Baseball and Basketball games, political conventions, entertainment showcases and much more.

 Media Links' mission is to offer broadcasters and network providers throughout the world leading edge transport technology, enabling them to move all types of professional media including 4K UHD/HD/SD SDI video, SMPTE ST2110, audio signals as well as high bandwidth data - across multi-service Ethernet/IP networks.

 Founded in 1993 and headquartered in Kawasaki, Japan, Media Links is the umbrella brand name supported by Media Links in Japan, Media Links Inc. in the USA, Media Links EMEA in the UK and Media Links AU Pty Ltd. in Australia. Media Links common stock is listed and traded on the JASDAQ Market of the Tokyo Stock Exchange under the Security Code Number 6659. For more information, please visit:

About Seiko Solutions Inc.

 In keeping with the principle of Seiko's founder, Kintaro Hattori, to be "always one step ahead of the rest," Seiko Solutions, as an operating company of Seiko Holdings, has continued to offer ICT solutions that support the transformation of our customers' business models based on their perspectives. To support our customers in digital transformation and maintain sustainable growth together, we will provide optimal one-stop solutions to meet their increasingly complex needs, from consultation to system construction and operation management, with ingenuity and a sense of speed. More information at:

 About Mainichi Broadcasting System

 Mainichi Broadcasting System is a television broadcasting company headquartered in Osaka, Japan. It operates in the largest broadcast area in Western Japan, the Kansai region, which has a population of about 22 million. This accounts for 17 percent of Japan's total population, with 9.8 million households. In 1999, the company was a winner of the International Emmy® Award for Best Documentary. More information at:

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