More ATSC 3.0 Standardization Steps Completed

The US-based Advanced Television Systems Committee standardized three more components of ATSC 3.0, the next-generation television system expected to transform the ability of broadcasters to deliver mobile, interactivity and higher quality content.

The Advanced Television Systems Committee (ATSC) members ratified the Link Layer Protocol and Audio and Video Watermark Emission standards to be part of the ATSC 3.0 suite of 20 standards and recommended practices. Three new Proposed Standards and two new Candidate Standards are also in progress within the technical subcommittee charged with developing and documenting ATSC 3.0.

The details

The Link Layer Protocol Standard (A/330) defines the layer between the physical layer and the network layer. The link layer transports the data from the network layer to the physical layer at the sending side and transports the data from the physical layer to the network layer at the receiving side. The ATSC Link-Layer Protocol also optimizes the proportion of useful data in the ATSC 3.0 Physical Layer, by means of efficient encapsulation and overhead reduction mechanisms for IP and MPEG-2 TS transport. Extensible “headroom” for future use is also provided.

The Audio Watermark Emission Standard (A/334) specifies the audio watermark encoding for use with systems conforming to the ATSC 3.0 family of specifications. This standard specifies the format in which the audio watermark resides in an uncompressed audio signal.

The Video Watermark Emission Standard (A/335) specifies the emission format for video watermarks used in ATSC 3.0 broadcasts. The video watermark technology provides the capability to robustly embed ancillary data in the transmitted pixels of a video signal. It provides a data path for its ancillary data payload that can readily survive changes in video compression data rate, transcoding to other video compression codecs, and delivery over legacy consumer HDMI interfaces.

More work in progress

ATSC Technology Group 3 (TG3) members have begun voting to elevate three ATSC Candidate Standards to Proposed Standard status (the final step before ATSC member approval).

The standards include the A/322 Service Announcement, which defines announcement of services in an ATSC 3.0 broadcast, A/333 Service Usage Reporting, which defines service usage reporting for ATSC 3.0; and A/343 Captions and Subtitles, which defines the required technology for closed caption and subtitle tracks over ROUTE-DASH and MPEG Media Transport.

TG3 members also are voting to elevate the A/360 Security draft document to Candidate Standard status. A/360 specifies the mechanisms for security and service protections in ATSC 3.0 systems. The A/324 Scheduler and Studio-to-Transmitter Link is now a Candidate Standard. Among other things, it specifies the interface protocol and operation parameters for Single Frequency Network transmitters.

Let us know what you think…

Log-in or Register for free to post comments…

You might also like...

Articles You May Have Missed – May 17, 2017

Whether you are facing a move to ATSC 3.0 or need to change out RF systems, the recent NAB show provided plenty of options for RF engineers. For those more ‘grounded’, production efficiency was top-of-mind with attendees. Our editors review both…

LG Builds Dual-Tuner ATSC 1.0/3.0 Ultra HD TVs for the Korean Market

LG Electronics is launching the first ATSC 3.0-equipped 4K Ultra HD TVs in Korea as SBS and other Korean broadcasters begin Next Gen TV broadcasting this spring in advance of the 2018 Winter Olympics.

Articles You May Have Missed

ATSC 3.0 is coming. Plan now. The front-of-mind issue for U.S. broadcasters is ATSC 3.0. When will it arrive? What can I do to prepare for it? Because it is not backward compatible, the change is controversial. Mike Chapman, a business…

An Update on the DTV Spectrum Reorganization

While there is plenty of talk about disruptive technologies — the SDI-to-IP migration, for instance — that transition pales in comparison to the FCC’s repack of the DTV broadcast frequency spectrum. For a TV station, what could be more disruptive than…

A Tutorial on ATSC 3.0 Signaling and Announcement: The Next PSIP

When the ATSC 3.0 broadcast television system replaces ATSC 1.0, the local TV station landscape is going to change drastically. Based on this first standardization effort, broadcasters will be able to deliver a hybrid mix of broadcast and broadband content, opening up…