Digital television (DTV) is the transmission of television signals using digital encoding, in contrast to the earlier analog television technology which used analog signals. At the time of its development it was considered an innovative advancement and represented the first significant evolution in television technology since color television in the 1950s. Modern digital television is transmitted in high-definition television (HDTV) with greater resolution than analog TV. It typically uses a widescreen aspect ratio in contrast to the narrower format (4:3) of analog TV. It makes more economical use of scarce radio spectrum space; it can transmit up to seven channels in the same bandwidth as a single analog channel, and provides many new features that analog television cannot. A transition from analog to digital broadcasting began around 2000. Different digital television broadcasting standards have been adopted in different parts of the world; below are the more widely used standards:
Digital Video Broadcasting (DVB) is a set of international open standards for digital television. DVB standards are maintained by the DVB Project, an international industry consortium, and are published by a Joint Technical Committee (JTC) of the European Telecommunications Standards Institute (ETSI), European Committee for Electrotechnical Standardization (CENELEC) and European Broadcasting Union (EBU).
Television in Hong Kong is primarily in Cantonese and English. It is delivered through analogue and digital terrestrial, cable, IPTV, and the Internet. Satellite TV is not common, although many housing estates have dishes and re-distribute a limited number of free channels through coaxial cables. The dominant broadcaster is TVB and ViuTV.
Digital terrestrial television is a technology for terrestrial television in which land-based (terrestrial) television stations broadcast television content by radio waves to televisions in consumers' residences in a digital format. DTTV is a major technological advance over the previous analog television, and has largely replaced analog which had been in common use since the middle of the 20th century. Test broadcasts began in 1998 with the changeover to DTTV beginning in 2006 and is now complete in many countries. The advantages of digital terrestrial television are similar to those obtained by digitising platforms such as cable TV, satellite, and telecommunications: more efficient use of limited radio spectrum bandwidth, provision of more television channels than analog, better quality images, and potentially lower operating costs for broadcasters.
Near Instantaneous Companded Audio Multiplex (NICAM) is an early form of lossy compression for digital audio. It was originally developed in the early 1970s for point-to-point links within broadcasting networks. In the 1980s, broadcasters began to use NICAM compression for transmissions of stereo TV sound to the public.
In cable television, governments apply a must-carry regulation stating that locally licensed television stations must be carried on a cable provider's system.
MCOT Public Company Limited, formerly known as the Mass Communication Organization of Thailand, is a Thai state-owned public broadcaster. It owns and operates a number of radio and television stations in Thailand. It is based in Bangkok.
DVB-T2 is an abbreviation for "Digital Video Broadcasting – Second Generation Terrestrial"; it is the extension of the television standard DVB-T, issued by the consortium DVB, devised for the broadcast transmission of digital terrestrial television. DVB has been standardized by ETSI.
The digital television transition, also called the digital switchover (DSO), the analogue switch/sign-off (ASO), the digital migration, or the analogue shutdown, is the process in which older analogue television broadcasting technology is converted to and replaced by digital television. Conducted by individual nations on different schedules, this primarily involves the conversion of analogue terrestrial television broadcasting infrastructure to digital terrestrial (DTT), a major benefit being extra frequencies on the radio spectrum and lower broadcasting costs, as well as improved viewing qualities for consumers.
In Thailand, television broadcasting started on 24 June, 1955 .Color telecasts were started in 1967, and full-time color transmissions were launched in 1975. As of November 2020, there are currently 21 digital (DVB-T2) TV channels in Thailand.
True4U is a Thai digital terrestrial television channel owned by True4U Station Company Limited, a unit of TrueVisions, a subsidiary of True Corporation, part of the Charoen Pokphand Group and Telenor. It broadcasts news, entertainment and sport programs. True4U is broadcasting on Thailand digital television platform on channel 24.
There are severalsports broadcasting contracts in Thailand.
PPTV, also known as PPTV HD and PPTV HD 36, an acronym for Prasert Prasarttong-Osoth Television) is a digital terrestrial television channel in Thailand, owned by Bangkok Media & Broadcasting Co., Ltd., a company managed by Prasarttong-Osoth, Bangkok Airways and Bangkok Hospital group owner, Prasert Prasarttong-Osoth.
Nation TV is the first 24-hour news television channel in Thailand, owned by Nation TV Co., Ltd., a subsidiary of Nation Group.
Thairath TV is a digital terrestrial television channel owned by Triple V Broadcast Co., Ltd., a subsidiary of the news publisher, Thairath, which was owned by Vacharaphol Co., Ltd., launched in April 2014 after they won a digital television broadcast license.
TNN is a Thai satellite, cable and digital terrestrial 24-hour news channel owned by Thai News Network (TNN) Co., Ltd., a unit of TrueVisions, a subsidiary of True Corporation, part of the Charoen Pokphand Group and Telenor, presents news, documentaries and sport news. TNN has a sister channel called TNN2.
Channel 8 is a Thai digital television channel that broadcasts entertainment, foreign TV series, and sports. It is owned and operated by RS Multimedia Company Limited. The channel is based in Bangkok, Thailand, where it is available on both C and KU bands. Channel 8 broadcasts popular events such as HBO World Championship Boxing plus domestic and self-produced programs.
Amarin TV, fully known as Amarin TV 34 HD, is a Thai digital terrestrial television channel operated by Amarin Television Co., Ltd., a subsidiary of Amarin Corporations PCL, which is an affiliate of the TCC Group. The networks offers a variety of content such as news, entertainment lifestyle, food and variety programs. It was also one of the broadcasting companies which was granted a license to operate on digital television by the National Broadcasting and Telecommunications Commission in December 2013.
