List of ATSC standards
Below are the published ATSC standards for ATSC digital television service, issued by the Advanced Television Systems Committee. A/49: Ghost Canceling Reference Signal for NTSC (for adjacent-channel interference or co-channel interference with analog NTSC stations nearby) A/52B: audio data compression (Dolby AC-3 and E-AC-3) A/53E: "ATSC Digital Television Standard" (the primary document governing the standard) A/55: "Program Guide for Digital Television" (now deprecated in favor of A/65 PSIP) A/56: "System Information for Digital Television" (now deprecated in favor of A/65 PSIP) A/57A: "Content Identification and Labeling for ATSC Transport" (for assigning a unique digital number to each episode of each TV show, to assist DVRs) A/63: "Standard for Coding 25/50 Hz Video" (for use with PAL and SECAM-originated programming) A/64A "Transmission Measurement and Compliance for Digital Television" A/65C: "Program and System Information Protocol for Terrestrial Broadcast and Cable" (PSIP includes virtual channels, electronic program guides, and content ratings) A/68: "PSIP Standard for Taiwan" (defines use of Chinese characters via Unicode 3.0) A/69: recommended practices for implementing PSIP at a TV station A/70A: "Conditional Access System for Terrestrial Broadcast" A/71: "ATSC Parameterized Services Standard" A/72: "Video System Characteristics of AVC in the ATSC Digital Television System" (implementing H.264/MPEG-4 as well as MVC for 3D television) A/76: "Programming Metadata Communication Protocol" (XML-based PMCP maintains PSIP metadata though a TV station's airchain) A/79: "Conversion of ATSC Signals for Distribution to NTSC Viewers" (recommended practice, issued February 2009) A/80: "Modulation and Coding Requirements for Digital TV (DTV) Applications Over Satellite" (ATSC-S) A/81: "Direct-to-Home Satellite Broadcast Standard" (not yet implemented by any services) A/82: "Automatic Transmitter Power Control (ATPC) Data Return Link (DRL) Standard" A/85: "Techniques for Establishing and Maintaining Audio Loudness for Digital Television" A/90: "Data Broadcast Standard" (for datacasting) A/92: "Delivery of IP Multicast Sessions over Data Broadcast Standard" (for IP multicasting) A/93: "Synchronized/Asynchronous Trigger Standard" A/94: "ATSC Data Application Reference Model" A/95: "Transport Stream File System Standard" (TSFS is a special file system for downloading computer files) A/96: "ATSC Interaction Channel Protocols" (interactive TV) A/97: "Software Data Download Service" (used by UpdateTV for upgrades and software patches in ATSC tuners) A/98: "System Renewability Message Transport" A/99: "Carriage Of Legacy TV Data Services" (for former analog supplemental services that used the vertical blanking interval lines, such as closed captioning and teletext) A/100: "DTV Application Software Environment - Level 1" (DASE-1) A/101: "Advanced Common Application Platform" (ACAP) A/103:2014: "Non-Real-Time Delivery" A/104: "ATSC 3D-TV Terrestrial Broadcasting" A/105:2015: "Interactive Services Standard" A/106:2015: "ATSC Security and Service Protection Standard" A/107:2015: "ATSC 2.0 Standard" A/110A: "Synchronization Standard for Distributed Transmission" (single-frequency networks) A/112: E-VSB (Enhanced Vestigal Sideband) A/153: ATSC-M/H 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.