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Digital Multimedia Broadcasting (DMB) is a digital radio transmission technology developed in South Korea [4] [5] [6] as part of the national information technology project for sending multimedia such as TV, radio and datacasting to mobile devices such as mobile phones, laptops and GPS navigation systems.
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.
The five main ATSC formats of DTV currently [when?] broadcast in the U.S. are: . Standard definition—480i, to maintain compatibility with existing NTSC sets when a digital television broadcast is converted back to an analog one [citation needed] —either by a converter box or a cable/satellite operator's proprietary equipment
In North America, digital SDTV is broadcast in the same 4:3 fullscreen aspect ratio as NTSC signals, with widescreen content often being center cut. [ 5 ] In other parts of the world that used the PAL or SECAM color systems, digital standard-definition television is now usually shown with a 16:9 aspect ratio , with the transition occurring ...
Seven years before the commercial launch, the network initially applied for a license from NTC on digital free TV. The digital TV box was given away as a prize for the loyal viewers and listeners of ABS-CBN channel 2, DZMM (AM radio station of ABS-CBN) and DZMM TeleRadyo (TV-radio cable channel of ABS-CBN) after the initial application.
Vietnamese TV stations started showing their digital on-screen graphical DOGs in 1995. Logos are not removed during commercial breaks, but remain in full-color, unlike their national counterparts in Indonesia (but note the local ones). A digital clock and program name may also be shown. Some cable channels show its cable provider logo and its logo.
The situation with worldwide digital television is much simpler by comparison. Most digital television systems are based on the MPEG transport stream standard, and use the H.262/MPEG-2 Part 2 video codec. They differ significantly in the details of how the transport stream is converted into a broadcast signal, in the video format prior to ...
The digital dividend refers to the radio spectrum which is released in the process of digital television transition.When television broadcasters switch from analog TV to digital-only platforms, part of the electromagnetic spectrum that has been used for broadcasting will be freed-up because digital television needs less spectrum than analog television, due to lossy compression.