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 6 March 2019. The CS period ends on 31 March 2020.

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/324: ATSC Candidate Standard: Revision of A/324:2018, Scheduler / Studio to Transmitter Link

Approved 23 May 2019. Updated 20 September 2019. The CS period ends on 31 May 2020.

This standard specifies the protocol on the Studio-to-Transmitter Link (STL) from studio side infrastructure to an SFN of Transmitters. It defines delivery protocols for ALP Transport. The document also defines possible interfaces among the studio infrastructure, for example the interconnection of the ATSC 3.0 Link Layer Protocol (ALP) and a Broadcast Gateway. This document specifies […]

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Amendment to A/341:2019 – ST 2094-40

Approved 28 August 2019. Updated 24 September 2019. The CS period ends on 31 May 2020.

This document describes technology documented in SMPTE 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/341:2019, “Video – HEVC,” (“A/341”) would be amended according to the edits described herein. A redline version is available […]

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