Technology Group 1
The ATSC Technology and Standards Group, with due regard for existing standards organizations and activities, develops and recommends voluntary, international technical standards for the distribution of television programs to the public using advanced television technology. Technologies considered may be improvements to current systems or entirely new systems that are compatible or incompatible with current systems. All forms of distribution systems may be considered, such as terrestrial broadcasting, cable systems, direct satellite broadcasting, and pre-recorded media. With respect to distribution systems, sound, vision, display, conditional access, and data sub-systems may be considered.
Chair, TG1: Michael Dolan, Industry consultant, sponsored by PBS
Michael A. Dolan is founder and president of Television Broadcast Technology, providing specialized professional encoders, test tools, and technical consulting in the field of digital television and Internet media. He holds a 1979 BSEE degree from Virginia Tech. Dolan has been involved in digital television engineering for many years, including data broadcast system architecture, digital receiver design and compliance. Dolan is an SMPTE Fellow and a former SMPTE Governor for the Hollywood Region. He is a recipient of the ATSC Bernard J. Lechner award and the CEA Technology Leadership Award.f
TG1/S4: Specialist Group on ATSC Mobile DTV
Chair: Mark Aitken, Sinclair Broadcast Group
The Specialist Group on ATSC Mobile/Handheld (M/H), TSG/S4, under the supervision and direction of the Technology and Standards Group, will evaluate “backwards compatible” proposal(s) for delivery to mobile and handheld devices using the DTV broadcast signals, will develop recommended changes to existing Standards, will develop new Standards when necessary, and where applicable develop associated Recommended Practices for mobile and handheld services using DTV broadcast signals. These documents will provide for delivery of real-time and non-real-time television content and data to mobile and handheld devices (including those defined as “pedestrian”). These ATSC-M/H services shall have the capability to be carried in existing ATSC DTV broadcast channels. The presence of these new M/H services shall not preclude or prevent operation of current ATSC services in the same RF channel or have significant adverse impact on legacy receiving equipment. Wherever possible, these standards will build on existing standards of the ATSC or other standards development organizations. This activity will include liaison with other Specialist and Planning Groups inside the ATSC as well as other standards development organizations and technology committees working on standards that include mobile and handheld technologies.
TG1/S6: Video and Audio Coding
Chair: Pat Waddell, Harmonic
The Specialists’ Group on Audio and Video Coding, under the supervision and direction of the Technology and Standards Group, develops recommendations for audio and video coding for use in the ATSC television system. TSG/S6, as directed by TSG and the ATSC Board of Directors, has the following work items:
- Investigate and document more efficient coding methods, specifically audio and video coding for the advanced transmission mode (and possibly main channel use)
- Maintain A/54A Sections 5 and 6
Maintain other ATSC audio and video coding document
TG1/S7: Specialist Group on Service and Content Protection
Chair: Adam Goldberg, AGP, LLC
The ATSC TSG/S7 Specialist Group on Security supports the Technology and Standards group (TSG) to describe, specify and document all aspects of protecting services (e.g. Conditional Access) and content (e.g. Digital Rights Management) within the ATSC system. This includes, for example:
- documenting constraints against and extensions to the MPEG-2 Transport Stream standards for security;
- documenting constraints against and extensions to ATSC IP-delivered broadcast standards for security;
- documenting fundamental security technologies, when appropriate (e.g., encryption mechanisms);
- documenting downloaded cryptographic object signing and verification mechanisms;
- maintaining resulting documents; and
- liaising with other groups, as necessary.
TG1/S8: Service Multiplex & Transport Systems Characteristics
Chair: Mark Eyer, Sony
The ATSC TSG/S8 Specialist Group on Service Multiplex and Transport Systems Characteristics supports the Technology and Standards Group to describe, specify, and document all aspects of the transport subsystem of the ATSC DTV system except data broadcasting. This work includes:
- Documenting constraints against and extensions to the MPEG-2 Transport Stream specification
- Developing standards for delivery of system and service information, including caption service signaling
- Developing standard methods for conditional access
- Considering standard methods for transport of program metadata such as television parental guidelines, digital rights management data and copy protection data, including support for program metadata applicable to future as well as current programming
- Developing methods for unambiguous identification of content
- Preparing guidelines for effective use of transport-related standards
- Maintaining resulting documents
TG1/S9: RF Transmission
Chair: Charles Einolf, Consultant
The Specialist Group on RF Transmission (TSG/S9) under the supervision and direction of the Technology and Standards Group (TSG), shall be responsible for developing technical documents and analyzing issues relating to terrestrial RF transmission and propagation with regard to ATSC DTV signals. Wherever possible, these standards will build on existing standards of the ATSC or other organizations. This activity will include liaison with other ATSC Specialists Groups.
TG1/S12: Specialist Group on 3D-TV
Chair: Dr. Youngkwon Lim, ETRI
The standard will cover these broadcast scenarios:
- 3D content delivered on one ATSC terrestrial channel to fixed receivers with delivery of both views (left and right) in real time.
- 3D content delivered on one ATSC terrestrial channel to mobile/handheld receivers, and 3D programs within the same channel while ensuring backwards compatibility.
- 3D content delivered in non-real time.
TG1/S13: Data Broadcasting
Chair: Michael Dolan, Industry consultant, sponsored by The Nielsen Company
This specialist group will define the mechanisms for serving the needs of data broadcast applications utilizing the ATSC digital broadcast as a delivery medium. This will include television program-related applications and non-television applications. Specifically, TSG/S13 will define a method or methods for using ATV broadcast to transport data streams, data files and executable code, the fundamental ingredients of both classes of applications. The group will also address other generic requirements imposed by these applications, for example low latency needs of some interactive applications, synchronization with video/audio programming, etc.
A-Team: Architectural Team
Chair: Michael Dolan, Industry consultant, sponsored by The Nielsen Company
The Architecture Team is a permanent group that reports to TSG. Membership is composed of TSG chairs and vice chairs, and specialist group chairs. The team is advisory in nature, writing reports if necessary but not developing standards. Initial tasks include: 1) coordinate robust mode work as needed, and 2) reply to recent member request for assigning code points. The purpose and scope of the Architecture Team is to:
- Oversee ATSC technical document structure and architecture
- Facilitate communication between specialist groups
- Provide a forum for addressing inter-specialist group issues
- Provide a forum to which ATSC staff and T3 can pose technical questions of a general nature and get a formal response
- Work with ATSC Code Points Registrar in an advisory capacity.