A Candidate Standard is a document that has received significant review within a specialist group. Advancement of a document to Candidate Standard is an explicit call to those outside of the related specialist group for implementation and technical feedback. This is the phase at which the specialist group is responsible for formally acquiring that experience or at least defining the expectations of implementation.
Approved 6 March 2019. The CS period ends on 30 September 2019.
This document specifies information describing the availability of broadcast services over time within a broadcast region. Broadcast receivers may use this information to help construct a list of services that may be available to them. Additionally, the information provides a schedule that allows receivers to maintain an up-to-date service list. This document describes how the […]Read More Download PDF File Download Zip File
A/331: ATSC Proposed Standard: Revision of A/331:2017 – Signaling, Delivery, Synchronization, and Error Protection
Approved 1 April 2019. This document is current at ballot as a Proposed Standard.
This document specifies the technical mechanisms and procedures pertaining to service signaling and IP-based delivery of a variety of ATSC 3.0 services and contents to ATSC 3.0-capable receivers over broadcast, broadband and hybrid broadcast/broadband networks. The service signaling functionality defines the data formats and information components necessary to discover and acquire user services. The IP-based […]Read More Download PDF File Download Zip File
Approved 29 March 2019. This document is currently at ballot as a Proposed Standard.
This document specifies the delivery of events/actions for ATSC 3.0 applications and synchronization of these application events/actions with underlying audio/video content. This Candidate Standard reversion of A/337 has the HELD and DWD signaling tables and related text removed. Those tables are being moved to A/331. An A/331 revision accommodating this change is also under development. […]Read More Download PDF File Download Zip File
Approved 2 January 2019. The CS period ends on 31 July 2019.
This document specifies the communication protocol between an ATSC 3.0 Primary Device (PD) and an ATSC 3.0 Companion Device (CD). In this context, the primary device is the primary receiver and is used to present the primary content. The companion device communicates with the primary device to present related, supplementary content, or even the same […]Read More Download PDF File
Approved 20 February 2018. Updated 5 March 2019. The CS period ends 31 May 2019.
This document describes technology documented in ST 2094-40 “Dynamic Metadata for Color Volume Transform — Application #4” which is a technology for the use of dynamic metadata for HDR content. If approved by the ATSC, A/341:2018, “Video – HEVC,” (“A/341”) would be amended according to the edits described herein. A redline version is available showing […]Read More Download PDF File
Approved 2 April 2019. This document is currently at ballot as a Proposed Standard.
This document describes the interactive content environment provided by an ATSC 3.0 receiver. This environment is comprised of a standard W3C User Agent with known characteristics, a WebSocket interface for obtaining information from the receiver and controlling various receiver functionality, and an HTTP interface for accessing files delivered over broadcast. This document also specifies the […]Read More Download PDF File
Approved 13 March 2019. This document is currently under ballot as a Proposed Standard.