Scope of TG3
The ATSC 3.0 Technology Standards Group (called TG3) will develop voluntary technical Standards and Recommended Practices for the next-generation digital terrestrial television broadcast system. ATSC 3.0 is likely to be incompatible with current broadcast systems and therefore must provide improvements in performance, functionality and efficiency significant enough to warrant implementation of a non-backwards-compatible system. Interoperability with production systems and non-broadcast distribution systems should be considered.
TG3: Chair - Rich Chernock, Triveni Digital
Chief Science Officer, Triveni Digital, Inc.
Princeton Junction, NJ
Dr. Chernock is currently Chief Science Officer at Triveni Digital. In that position, he is developing strategic directions for monitoring, content distribution and metadata management for emerging digital television systems and infrastructures. Previously, he was a Research Staff Member at IBM Research, investigating digital broadcast technologies.
Dr. Chernock is active in many of the ATSC, SMPTE and SCTE standards committees, particularly in the areas of future DTV, monitoring, metadata, and data broadcast. He is chairman of the ATSC Technology Group on ATSC 3.0 (TG3) and chairs the AHG on service delivery and synchronization for ATSC 3.0. He was previously chairman of the ATSC Technology and Standards Group (TG1). He is also the Distinguished Lecturer Chair for IEEE BTS.
In another life, he used transmission electron microscopy to study materials characteristics for advanced ceramics packaging and semiconductor technology at IBM. His ScD was from MIT in the field of nuclear materials engineering.
TG3 Specialist Groups
TG3/S31: System Requirements and Program Management
Chair: Skip Pizzi, NAB
Vice-Chair: Ms. Madeleine Noland, Zenith Electronics LLC
The Specialist Group on ATSC 3.0 System Requirements and Program Management (called TG3/S31) will solicit use cases and develop scenarios, and examine them within various industry contexts for the next-generation digital television broadcast system (ATSC 3.0). These scenarios will be used to derive a set of System Requirements and the associated Glossary for ATSC 3.0, which will in turn enable the development of Technical Standards and Recommended Practices for such future service by TG3 and its other subgroups. The group will manage the ongoing development and documentation of these System Requirements and Glossary as appropriate over time.
The group will assist in the review, coordination and consolidation of work within TG3’s subgroups, including reviewing subgroup output for adherence to the System Requirements, coordinating interdependent deliverables and timelines, assisting in identifying and resolving work overlaps or gaps between groups, drafting outlines and shared sections of documents requiring multiple subgroup input, and other similar tasks as assigned by TG3.
The Specialist Group on System Requirements and Program Management, TG3/S31, is charged with developing Requirements for the ATSC 3.0 system, and coordinating the process of deriving a full ATSC 3.0 standard from components developed by other Specialist Groups in TG3. After soliciting and collecting use cases for a next-generation television system from around the world the group extracted a set of 13 "Usage Scenarios" describing the desired attributes of the ATSC 3.0 system. From these Scenarios the group developed an initial set of System Requirements which TG3 assigned to various other Specialist Groups as guidance for the drafting of language for the ATSC 3.0 standard.
The group has subsequently moved into a maintenance mode on this front where additional Requirements are no longer actively solicited. Reevaluation of existing Requirements may still be considered should adequate cause to do so be presented.
Meanwhile, the group is engaged in various activities regarding prioritization and overall progress of work and the coordination of Requirements’ fulfillment by other Specialist Groups in TG3.
TG3/S32: Specialist Group on Physical Layer for ATSC 3.0
Chair: Luke Fay, Sony
Vice-Chair: Mr. William Hayes, IEEE -- Broadcast Technology Society
The Specialist Group on Physical Layer for ATSC 3.0 (called TG3/S32) will examine, assess, and possibly recommend technical proposal(s) for the physical layer(s) of the next generation digital terrestrial television broadcast system (ATSC 3.0). Interoperability with non-broadcast distribution systems (both traditional and non-traditional) will be considered. The term "television" should not in any way constrain the Specialist Group from considering physical layer technologies, systems and services that may currently fall outside the traditionally defined boundaries of television broadcasting.
The Specialist Group on Physical Layer for ATSC 3.0, TG3/S32, has received 12 responses to its Call for Proposals of technology and/or physical layer systems for a next generation broadcast television (ATSC 3.0) physical layer. Eleven of those responses met the ATSC rules of compliance and are now being evaluated. The group met in the middle of October 2013 to receive presentations on all eleven proposals and begin its work to build the ATSC 3.0 PHY. At that October meeting, S32 formed two new ad-hoc groups.
S32-2, chaired by Dr. Lachlan Michael of Sony and vice-chaired by Dr. David Gomez-Barquero of Universidad Politecnica de Valencia, was formed to focus on Modulation and Coding technologies. S32-3, chaired by Dr. Nejib Ammar of Zenith and vice-chaired by Winston Caldwell of Fox was formed to look at waveform technologies including framing. Those AHG’s are now evaluating the submitted proposals with a goal of making recommendations of a baseline layer to S32 as a first milestone. Further optional technologies will be recommended in later milestones.
S32 has formed a baseline skeleton architecture and AHG recommendations are filling in this architecture.
Currently, Orthogonal Frequency Division Multiplexing (OFDM) based modulation and Low Density Parity Check (LDPC) codes are recommended.
TG3/S33: Specialist Group on Management and Protocols
Chair: Dr. Youngkwon Lim, Samsung Electronics America, Inc.
Vice-Chair: Mr. Charles Lo, Qualcomm, Inc.
Vice-Chair: Ralf Schaefer, Technicolor
The Specialist Group on Management and Protocols (called TG3/S33) will solicit, examine and assess technical proposals and develop Standards and Recommended Practices related to technologies for the management and delivery of ATSC 3.0 services and associated metadata, over terrestrial broadcast channels and, if appropriate, broadband/bi-directional networks, to fulfill the relevant ATSC 3.0 System Requirements.
The Specialist Group on Management & Protocols, TG3/S33, was formed in March of 2013 and primarily focuses on technologies for the management and delivery of ATSC 3.0 services and associated metadata. S33 has formed three ad hoc groups (AHGs). The first AHG (S33-1) is working on service delivery and synchronization and the second AHG (S33-2) is working on service announcement and personalization. The third AHG (S33-3) is working on interactive services, companion screen services, and redistribution support. S33 and each of its AHGs have approved scope and established work plan. The work has been progressing generally as planned so far. S33 has made one important decision to utilize strictly an IP-based transport layer for ATSC 3.0. S33-1 has decided to work on delivery, synchronization and FEC technologies based on contributions from members. Common elements from contributions regarding this work at a high level are the use of ISOBMFF as a content format for streaming delivery (not yet agreed as the exclusive format) and the use of UTC (or some other form of "absolute" time) for synchronization and buffer management. S33-2 has started to draft a document on Service Announcement & Personalization by using OMA BCAST as a starting point. S33-3 has worked on technologies to support redistribution through MVPDs and produced a CfP on watermarking technologies, which has been approved by S33 and issued. As a response, six companies have provided overview proposals. S33-3 will also specify a fingerprint solution based largely on ATSC 2.0. S33-3 has started the working draft document for Redistribution Support which is structurally based on the ATSC 2.0 document.
TG3/S34: Specialist Group on Applications and Presentation for ATSC 3.0
Chair: Ms. Madeleine Noland, Zenith Electronics LLC
Vice-Chair: Brett Jenkins, LIN Media
The Specialist Group on Applications and Presentation for ATSC 3.0 (called TG3/S34) will solicit, examine and assess technical proposals and develop Standards and Recommended Practices for applications executed on, and for presentation of, the next generation digital terrestrial television broadcast system to fulfill the relevant ATSC 3.0 System Requirements. The Specialist Group will primarily focus on the portion of the ATSC 3.0 platform that defines the user experience. The work may include, but is not limited to, support for codecs, linear TV services, file delivery services, interactive applications, service measurement, service announcement, service and content protection, and other features as defined by system requirements across a multi-device ecosystem.
The Specialist Group on Applications & Presentation, TG3/S34, was formed in March of 2013 and will primarily focus on the portion of the ATSC 3.0 platform that defines the user experience. S34 formed four ad hoc groups (AHGs) whose tasks are roughly divided as follows: video, audio, conceptual model/framework, and interactivity. S34 and each of its AHGs have approved scope and work plan documents. The work plans currently conform to the overall ATSC 3.0 target schedule, however, it is too early in the process to fully understand all of the work ahead. The conceptual model for primary ATSC 3.0 Services is complete although minor edits are ongoing (audio, video, closed captions, and adjunct data as linear or on-demand offerings). Conceptual models for ESG and Content Advisory are also complete. Other aspects of the Services will follow (personalization, interactivity, EAS, security, companion devices, and usage reporting). Several other ATSC 3.0 groups are awaiting the conceptual models, so this work is targeted to be complete in summer 2014. The video group is discussing video formats (e.g., interlace, frame rates, resolutions, etc.). It has received three contributions for video codec solutions, all based on HEVC technology. The audio group has determined that a Call for Proposals (CFP) will be issued for audio technology solutions. This is the only CFP that S34 expects to initiate. S34 expects to draw heavily on both HbbTV 2.0 and ATSC 2.0 for functional areas they have in common with ATSC 3.0, including the interactive application runtime environment.
TG3/S35: Specialist Group on ATSC 3.0 Ecosystem
Chair: S. Merrill Weiss, Merrill Weiss Group
Vice-Chair: Peter Sockett, WRAL-HD
The TG3/S35 Specialist Group on the ATSC 3.0 Ecosystem will model and evaluate the environment in which ATSC 3.0 systems will be deployed. The processes of modeling and evaluation will consider the flow of content from acquisition through post production, distribution, emission, and redistribution. The Specialist Group will examine each of the types of content and functionality impacting on a fully operational ATSC 3.0 broadcast system. The examination will include such layers as video, audio, captioning, interactivity, program and service management and announcements (including emergency alerting), content identification, security, synchronization, monitoring, and redistribution by other delivery methods. The models developed will include at least block diagrams that cover the typical content and data workflows that will feed into and be associated with ATSC 3.0 emissions. This work will be published to facilitate decisions made by other ATSC Specialist Groups and to instigate development of standards by ATSC and/or other standards development organizations when gaps in required standards are found.