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SMPTE 2017: Synchronization and Timing in SMPTE ST 2110

The evolution to ST2110 brings with it an entirely new way to establish system timing, through use of IEEE-1588 PTP and SMPTE ST2059. This method is native to the IP domain and to the RTP transport and media synchronization used by 2110, and also provides virtualized legacy timing capability. Using this toolset, evolutionary facilities of any configuration of IP and SDI equipment can be built. This paper discussed the considerations in system timing using ST2110, including those which include SDI elements. It initially discusses how PTP delivers precision time across an IP network and how ST2059 uses this to virtualize any reference signal. It then explains the synchronization mechanisms of ST2110 including transport timestamps and media clocks, how streams are synchronized among each other and how they interoperate with PTP, and how timing of SDI and AES3 signals is harmonized with ST2110 streams. On this basis, system design is examined, with explanation of how ST2059 enables fluid evolution, using examples of both IP islands in an SDI infrastructure and SDI facilities using an IP fabric. Also covered are router switchpoint timing and latency considerations. Presented By: Paul Briscoe SMPTE (pronounced "simp-tee"), the organization whose standards work has supported a century of advances in entertainment technology and whose membership spans the globe, holds the SMPTE Annual Technical Conference & Exhibition in Los Angeles each October. The event is considered the world's premier forum for the exploration of media and entertainment technology. More information about this year’s upcoming event is available at www.smpte2018.org. The people of the Society of Motion Picture and Television Engineers, or SMPTE, have sorted out the details of many significant advances in media and entertainment technology, from the introduction of "talkies" and color television to HD and UHD (4K, 8K) TV. Since its founding in 1916, SMPTE has received an Oscar® and multiple Emmy® Awards for its work in advancing moving-imagery engineering across the industry. SMPTE has developed thousands of standards, recommended practices, and engineering guidelines, more than 800 of which are currently in force today. SMPTE Time Code™ and the ubiquitous SMPTE Color Bars™ are just two examples of SMPTE's notable work. As it enters its second century, SMPTE is shaping the next generation of standards and providing education for the industry to ensure interoperability as the industry evolves further into IT- and IP-based workflows. Visit www.smpte.org for more information. SMPTE's global membership today includes more than 7,000 members: motion-imaging executives, creatives, technologists, researchers, and students who volunteer their time and expertise to SMPTE's standards development and educational initiatives. A partnership with the Hollywood Professional Association (HPA) connects SMPTE and its membership with the businesses and individuals who support the creation and finishing of media content. Information on joining SMPTE is available at www.smpte.org/join.