ATSC Standards Update: Four Updated Documents Published
Four updated documents have been published since the last issue of this newsletter. They are:
— A/331:2023-02, “Signaling, Delivery, Synchronization, and Error Protection.” This version includes two recently approved amendments. The first removed the Broadcaster Application Lifecycle provisions (Section 7.1.2.3) and instead points to the latest version of A/344. The second amendment addressed the need for special timing and buffering consideration for IMSC1 tracks, added required timing constraints, and introduced possible implementations.
— A/344:2023-02, “ATSC 3.0 Interactive Content.” This document includes a number of updates and changes collected since the previous version of A/344 was published last year. It also includes the Application Lifecycle changes as detailed above.
— A/362:2023-02, “Digital Rights Management (DRM).” This document is a revision that includes formal JSON Schema for DRM APIs, which had previously been shown by less formal means.
— A/53 Part 3:2023-02, “Service Multiplex and Transport Subsystem Characteristics.” This update to the ATSC 1.0 standard aligns ATSC A/53 Part 3 with the method of implementing AVC compression of multicast programs that has been implemented in broadcast transmissions and are anecdotally reported to be received successfully on a large majority of “smart” DTV sets.
One ballot is currently open at the Membership level—the annual revision of A/300, “ATSC 3.0 System.” An element of the ATSC 3 Version Control process is the annual update of references; specifically, all of the ATSC 3.0 documents listed in A/300 are to be made internally consistent with the remainder of the suite.
Posted in ATSC News
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