Candidate Standards

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.


A/324: ATSC Candidate Standard: Scheduler / Studio to Transmitter Link

Approved 30 September 2016. The CS period ends 30 March 2017.

This document specifies the protocol on the Single Frequency Network (SFN) interface from studio side infrastructure to SFN of transmitters. The document also defines possible interfaces among the studio infrastructure, for example the interconnection of the ATSC Link Layer Protocol (ALP) and a Broadcast Gateway. This document specifies certain constraints on the scheduling of content […]

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A/331: ATSC Candidate Standard: Signaling, Delivery, Synchronization, and Error Protection

Approved 5 January 2016. Updated 21 September 2016. The CS period end 30 January 2017.

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 […]

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A/332: ATSC Proposed Standard, Service Announcement

Approved 28 October 2016. This document is currently at ballot as a Proposed Standard.

The normative portions of this document define a standard for announcement of services in an ATSC 3.0 broadcast.

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A/336: ATSC Candidate Standard, Content Recovery in Redistribution Scenarios

Approved 27 December 2016. This document is currently at ballot as a Proposed Standard.

This document specifies methods by which receivers may recover content that is available from a broadcaster, but not delivered directly to the receiver through the RF broadcast signal. This method may be useful in the as case when the receiver is connected to a set-top box via an HDMI cable and is only receiving uncompressed […]

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A/338: ATSC Candidate Standard: Companion Device

Approved 20 December 2016. This document is currently at ballot as a Proposed Standard.

This document specifies the communication protocol between an ATSC primary device and an ATSC companion device. 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 content as that being […]

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A/341: ATSC Candidate Standard: Video

Approved 24 November 2015. Updated 13 July 2016. The CS period ends 30 January 2017.

This Standard describes the video coding constraints on ITU-T Rec. H.265 | International Standard ISO/IEC 23008-2 (“HEVC”) video compression in the ATSC 3.0 Digital Television System. A redline  is available for download showing changes made relative to the previously-published version.

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A/342 Part 1: ATSC Candidate Standard – Audio Common Elements

Approved 23 December 2016. This document is currently at ballot as a Proposed Standard.

This document specifies the common framework for ATSC 3.0 Audio. It is intended to be used in conjunction with the specific audio technologies described in subsequent parts of this Standard. The ATSC 3.0 audio system provides immersive and personalizable sound for television. It is not compatible with the audio system used in ATSC 1.0 service. […]

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A/342 Part 2: ATSC Candidate Standard – AC-4 System

Approved 26 December 2016. This document is currently at ballot as a Proposed Standard

This document standardizes the AC-4 audio system for use in the ATSC 3.0 Digital Television System. It describes the characteristics of the AC-4 audio system and establishes a set of constraints on ETSI TS 103 190-2 for use within ATSC 3.0 broadcast emissions.

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A/342 Part 3: ATSC Candidate Standard – MPEG-H System

Approved 27 December 2016. This document is currently at ballot as a Proposed Standard.

This document standardizes the MPEG-H Audio system for use in the ATSC 3.0 Digital Television System. It describes the characteristics of the MPEG-H Audio system and establishes a set of constraints on MPEG-H Audio for use within ATSC 3.0 broadcast emissions.

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A/344: ATSC Candidate Standard: ATSC 3.0 Interactive Content

Approved 29 December 2016. The CS period ends 29 June 2017.

This specification defines the details of an environment that is required for broadcaster’s applications to run. The broadcaster’s application is an HTML5 application running in a User Agent, which utilizes the User Agent APIs specified in this document.

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A/360: ATSC Candidate Standard, ATSC 3.0 Security and Service Protection

Approved 28 October 2016. The CS period ends 30 January 2017

This standard specifies the mechanisms for security and service protections in ATSC 3.0 systems.

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