ATSC

ATSC is a set of standards for digital television broadcasting developed by the Advanced Television Systems Committee (ATSC), a non-profit organization established by the Federal Communications Commission (FCC) in collaboration with the National Association of Broadcasters (NAB), Consumer Technology Association (CTA), and Society of Motion Picture and Television Engineers (SMPTE). The ATSC standards are used in several countries, including the United States, Canada, Mexico, and South Korea, and are compatible with Dolby Digital and DTS audio formats. The development of ATSC was influenced by the work of Joseph Flaherty, a pioneer in HDTV technology, and Richard Green, a renowned expert in digital signal processing. The ATSC standards have been adopted by major broadcasters such as NBC, CBS, and ABC, and are supported by industry leaders like Samsung, LG, and Sony.

Introduction to ATSC

The ATSC standards provide a framework for broadcasting digital television signals, including HDTV and SDTV formats, using a variety of transmission modes, such as VHF and UHF frequencies. The ATSC system is designed to be compatible with existing NTSC infrastructure, allowing for a smooth transition to digital broadcasting, as demonstrated by the successful transition of PBS and Fox to digital broadcasting. The ATSC standards also support advanced features like multicasting, data broadcasting, and interactive television, which have been implemented by broadcasters like BBC and CNN. The development of ATSC has been influenced by the work of IEEE and ITU, and has been recognized by awards such as the Emmy Award and the Technology & Engineering Emmy Award.

History of ATSC

The development of ATSC began in the late 1980s, with the formation of the Advanced Television Systems Committee (ATSC) in 1982, which brought together industry leaders like General Instrument, Zenith Electronics, and RCA, to develop a standard for digital television broadcasting. The ATSC committee was chaired by Richard E. Wiley, a former chairman of the FCC, and included representatives from major broadcasters like CBS and NBC. The first ATSC standard, known as ATSC A/53, was published in 1995, and was later revised and updated to include new features and technologies, such as Dolby AC-3 audio and MPEG-4 video, which have been adopted by industry leaders like Disney and Warner Bros.. The ATSC standards have undergone several revisions, with the latest version, ATSC 3.0, being published in 2017, and have been recognized by organizations like the National Academy of Television Arts and Sciences (NATAS) and the Society of Broadcast Engineers (SBE).

Technical Specifications

The ATSC standards specify the technical requirements for digital television broadcasting, including the modulation scheme, error correction, and audio compression algorithms. The ATSC system uses a VSB (Vestigial Side Band) modulation scheme, which is similar to the NTSC modulation scheme, but with improved performance and resistance to interference, as demonstrated by the work of Bell Labs and IBM. The ATSC standards also specify the use of MPEG-2 video compression and Dolby AC-3 audio compression, which provide high-quality video and audio with efficient use of bandwidth, as implemented by broadcasters like HBO and Showtime. The ATSC system is designed to be flexible and adaptable, with support for a range of transmission modes and channel bandwidths, as recognized by the Federal Communications Commission (FCC) and the International Telecommunication Union (ITU).

ATSC Standards

The ATSC standards include a range of specifications and guidelines for digital television broadcasting, including the ATSC A/53 standard, which defines the basic requirements for ATSC broadcasting, and the ATSC A/65 standard, which specifies the requirements for PSIP (Program and System Information Protocol) data, as implemented by broadcasters like ESPN and Fox Sports. The ATSC standards also include guidelines for closed captioning, video description, and emergency alert systems, which have been recognized by organizations like the National Federation of the Blind (NFB) and the American Red Cross. The ATSC standards are regularly updated and revised to reflect advances in technology and changes in industry requirements, as demonstrated by the work of the ATSC Technology Group and the Society of Cable Telecommunications Engineers (SCTE).

Implementation and Adoption

The ATSC standards have been widely adopted by broadcasters and manufacturers around the world, with many countries using the ATSC system for digital television broadcasting, including the United States, Canada, and South Korea. The ATSC system has been implemented by major broadcasters like NBC, CBS, and ABC, and is supported by industry leaders like Samsung, LG, and Sony. The ATSC standards have also been recognized by international organizations like the International Telecommunication Union (ITU) and the European Broadcasting Union (EBU), and have been adopted by broadcasters like BBC and CNN. The implementation of ATSC has been influenced by the work of FCC and CTA, and has been recognized by awards such as the Emmy Award and the Technology & Engineering Emmy Award.

Comparison to Other Standards

The ATSC standards are one of several digital television broadcasting standards used around the world, including DVB (Digital Video Broadcasting) and ISDB (Integrated Services Digital Broadcasting). The ATSC system is similar to the DVB system, but with some key differences, such as the use of VSB modulation instead of COFDM (Coded Orthogonal Frequency Division Multiplexing), as recognized by the European Telecommunications Standards Institute (ETSI) and the International Electrotechnical Commission (IEC). The ATSC system is also compatible with MPEG-4 video compression, which is widely used in IPTV (Internet Protocol Television) and OTT (Over-the-top) streaming services, as implemented by industry leaders like Netflix and Amazon Prime Video. The ATSC standards have been compared to other standards like DTMB (Digital Terrestrial Multimedia Broadcast) and DMB (Digital Multimedia Broadcasting), and have been recognized by organizations like the National Academy of Television Arts and Sciences (NATAS) and the Society of Broadcast Engineers (SBE).

Category:Digital television