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/200: ATSC Candidate Standard: Regional Service Availability

Approved 26 April 2018. Updated 9 August 2018. The CS period ends on 31 January 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 […]

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A/323: ATSC Proposed Standard: Dedicated Return Channel for ATSC 3.0

Approved 7 November 2018. This document is currently at ballot as a Proposed Standard.

This document specifies the physical layer and the Medium Access Control (MAC) layer for the ATSC 3.0 Dedicated Return Channel (DRC). The DRC physical layer specifies the uplink framing, baseband signal generation, random access, and downlink synchronization scheme. The DRC MAC layer specifies the MAC procedures, MAC PDU formats, and signaling schemes between the ATSC […]

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

Approved 30 April 2018. Updated 13 August 2018. The CS period ends 31 January 2019.

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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ATSC Candidate Standard: A/341 Amendment – 2094-40

Approved 20 February 2018. 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.

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

Approved 27 April 2018. Updated 21 August 2018. The CS period ends 31 January 2019.

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 […]

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

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

29 August 2018. The CS period ends on 31 January 2019.

This document is a Candidate Standard Revision of A/360, which specifies the mechanisms for security and service protections in ATSC 3.0 systems. The document is provided as a Microsoft Word redline showing changes relative to the current published version of A/360.

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