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List of ATSC standards

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Below are the published ATSC standards for ATSC digital television service, issued by the Advanced Television Systems Committee.

In 2004, the main ATSC standard was amended to support Enhanced ATSC (A/112); this transmission mode is backwardly compatible with the original 8-Bit Vestigal Sideband modulation scheme, but provides much better error correction.

ATSC-M/H for mobile TV has been approved and added to some stations, though it is known that it uses MPEG-4 instead of MPEG-2 for encoding, and behaves as an MPEG-4-encoded subchannel, inheriting 8VSB from the remainder of the channel.

ATSC 3.0

Main article: ATSC 3.0

ATSC 3.0 is a non-backwards-compatible version of ATSC being developed (as of May 18, 2016) that uses OFDM instead of 8VSB and a much newer video codec (instead of ATSC 1 and 2's MPEG-2). At the time of this article's writing, it has several candidate and one finalized standard.

On March 28, 2016, the Bootstrap component of ATSC 3.0 (System Discovery and Signalling) was upgraded from candidate standard to finalized standard.[1]

On May 4, 2016, the Audio Codec component of ATSC 3.0 was elevated to candidate standard, with two finalists remaining: Dolby AC-4[2] and MPEG-H Audio Alliance format from Fraunhofer IIS, Qualcomm and Technicolor SA.[3][4] A third entry from DTS named DTS:X (a successor to DTS-HD) was withdrawn before the standard was upgraded to candidate status.[5]

On September 8, 2016, the Physical Layer Download (OFDM) component of ATSC 3.0 was upgraded from candidate standard to finalized standard.[6]

On October 5, 2016, the Link Layer Protocol Standard (A/330) was elevated from Candidate to final standard, along with the Audio Watermark Emission Standard (A/334) and Video Watermark Emission Standard (A/335). ATSC Technology Group 3 (TG3) members have also begun voting on elevating the following Candidate Standards to Proposed Standard status (the final step before becoming an approved standard): Service Announcement (A/322), Service Usage Reporting (A/333) and Captions and Subtitles (A/343). TG3 members also are voting to elevate Security (A/360) to Candidate Standard status, joining Schedule and Studio-to-Transmitter Link Standard (A/324), which was recently elevated.[7] On March 30, 2016, A/324 (Schedule and Studio-to-Transmitter Link) was upgraded from Proposed to Candidate Standard.

File:ATSC 3.0 layers.png
ATSC 3.0's multiple layers. The standards within ATSC 3.0 are rolled into each of the layers.
Structure/ATSC 3.0 System Layers[8]
  1. Bootstrap: System Discovery and Signalling
  2. Physical Layer: Transmission (OFDM)
  3. Link Layer Protocols: IP, MMT
  4. Presentation: Audio and Video standards (to be determined), Ultra HD with High Definition and standard definition multicast, Immersive Audio
  5. Applications: Screen is a web page
Finalized Standards
  • A/321: System Discovery and Signalling
  • A/322: Physical Layer Download
  • A/330: Link Layer Protocol
  • A/334: Audio Watermark Emission
  • A/335: Video Watermark Emission
Candidate Standards
  • A/300: ATSC 3.0[9]
  • A/323: Physical Layer Upload
  • A/324: Schedule and Studio-to-Transmitter Link
  • A/330: Link Layer Protocol
  • A/331: Signaling, Delivery, Synchronization, and Error Protection
  • A/332: Service Announcement
  • A/333: Service Usage Reporting
  • A/336: Content Recovery in Redistribution Scenarios
  • A/338: Companion Device
  • A/341: Video Standard (H.265, Scalable HEVC with HDR) [10][11]
  • A/342: Audio Standard[12]
  • A/342 Part 1: Audio Common Elements
  • A/342 Part 2: AC-4 System
  • A/343 Part 3: MPEG-H AA System
  • A/343: Captions and Subtitles
  • A/344: Application Runtime Environment Standard (apps for advanced televisions)
  • A/345: Personalization
Under Consideration - Working Drafts and Recommended Practices
  • A/325: Recommended Practice: TG3/S32 Lab Performance Test Plan
  • A/326: Working Draft Recommended Practice: Field Test Plan
  • A/360: Security (encryption for broadcasters) (Working Draft)

References

  1. ^ http://www.tvtechnology.com/news/0002/first-element-of-atsc-30-approved-for-standard/278263
  2. ^ http://www.dolby.com/us/en/technologies/AC-4.html
  3. ^ http://www.tvtechnology.com/news/0002/atsc-a32-audio-elevated-to-candidate-standard/278594
  4. ^ MPEG-H Audio Alliance Official Website
  5. ^ http://atsc.org/news-release/advanced-television-systems-committee-begins-review-of-atsc-3-0-audio-system-proposals/
  6. ^ http://www.tvtechnology.com/atsc3/0031/atsc-30-physical-layer-standard-approved/279414
  7. ^ http://www.tvtechnology.com/atsc3/0031/atsc-approves-more-30-components/279556
  8. ^ http://www.tvtechnology.com/portals/0/ATSC30Layers.png
  9. ^ http://atsc.org/newsletter/atsc-3-0-what-will-the-standard-look-like/
  10. ^ http://atsc.org/candidate-standard/a341-atsc-candidate-standard-video/
  11. ^ http://www.tvtechnology.com/news/0002/hpa-2016-atsc-30-update/277950
  12. ^ http://atsc.org/newsletter/bootstrap-proposed-standard-tg3-ballot-imminent-atsc-3-0-candidate-standards-wings/
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