Posted on March 8, 2023 in ATSC News
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 22.214.171.124) 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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The Advanced Television Systems Committee, Inc., is an international, non-profit organization developing voluntary standards and recommended practices for digital terrestrial broadcasting. ATSC member organizations represent the broadcast, broadcast equipment, motion picture, consumer electronics, computer, cable, satellite, and semiconductor industries. ATSC also develops digital terrestrial broadcasting implementation strategies and supports educational activities on ATSC standards.