digital TV - ορισμός. Τι είναι το digital TV
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Τι (ποιος) είναι digital TV - ορισμός

TRANSMISSION OF AUDIO AND VIDEO BY DIGITALLY PROCESSED AND MULTIPLEXED SIGNAL
Digital TV; Digital tv; Terrestrial Digital Television; Digital (television); High-definition television in Europe; DTV channel-protection ratio; Digital Television; Digital television in Europe; Digital television in europe; Terrestrial digital television; DTV channel protection ratios; Digital television tuner; Comparison of digital and analog television; Comparison of analog and digital television; History of digital television
  • Comparison of image quality between [[ISDB-T]] (1080i broadcast, top) and [[NTSC]] (480i transmission, bottom)
  • A map depicting digital terrestrial television standards

digital TV         
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Digital TV is the same as digital television
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A digital TV is the same as a digital television
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Digital television         
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.
digital television         
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Digital television is television in which the signals are transmitted in digital form and decoded by the television receiver.
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A digital television is a television that can receive digital signals.
...wide screen digital televisions.
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Βικιπαίδεια

Digital television

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 (commonly 16:9) in contrast to the narrower format 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) uses coded orthogonal frequency-division multiplexing (OFDM) modulation and supports hierarchical transmission. This standard has been adopted in Europe, Africa, Asia, and Australia, for a total of approximately 60 countries.
  • Advanced Television System Committee (ATSC) standard uses eight-level vestigial sideband (8VSB) for terrestrial broadcasting. This standard has been adopted by 9 countries: the United States, Canada, Mexico, South Korea, Bahamas, Jamaica, the Dominican Republic, Haiti and Suriname.
  • Integrated Services Digital Broadcasting (ISDB) is a system designed to provide good reception to fixed receivers and also portable or mobile receivers. It utilizes OFDM and two-dimensional interleaving. It supports hierarchical transmission of up to three layers and uses MPEG-2 video and Advanced Audio Coding. This standard has been adopted in Japan and the Philippines. ISDB-T International is an adaptation of this standard using H.264/MPEG-4 AVC, which has been adopted in most of South America and Portuguese-speaking African countries.
  • Digital Terrestrial Multimedia Broadcast (DTMB) adopts time-domain synchronous (TDS) OFDM technology with a pseudo-random signal frame to serve as the guard interval (GI) of the OFDM block and the training symbol. The DTMB standard has been adopted in China, including Hong Kong and Macau.
  • Digital Multimedia Broadcasting (DMB) is a digital radio transmission technology developed in South Korea 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.
Παραδείγματα από το σώμα κειμένου για digital TV
1. Digital TV offers sharper pictures and better sound.
2. About half the country now accesses digital TV through Freeview, Sky or cable.
3. It has so far attracted 210,000 digital TV customers, 207,000 broadband customers and 70,000 telephony customers.
4. China to announce digital TV standard soon: BEIJING – The Associated Press China will soon announce a digital TV standard for the world‘s biggest television market, a state news agency reported.
5. Don‘t Miss FCC information To order government coupons Can retailers meet digital TV demand?