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Digital terrestrial television — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Digital_terrestrial_television
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-31T08:01:15.729Z
SHA-256 of the archived text: 958382769410e5607471ad67377e43bd8b17afb6c889301b8aebbd81dc780f78
Stable URL of this page: https://metraipolis.com/documento/dc_ae072dbd2fbc

How to cite

Digital terrestrial television — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Digital_terrestrial_television (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_ae072dbd2fbc (Metraipolis archive dc_ae072dbd2fbc, sha256 958382769410e5607471ad67377e43bd8b17afb6c889301b8aebbd81dc780f78)

BibTeX

@misc{dcae072dbd2fbc,
  title = {Digital terrestrial television — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Digital_terrestrial_television},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_ae072dbd2fbc; sha256 958382769410e5607471ad67377e43bd8b17afb6c889301b8aebbd81dc780f78},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Digital_terrestrial_television. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Digital terrestrial television (DTT, DTV, or DTTV) is a broadcast technology that transmits television signals digitally over the air, replacing analog transmission methods. It has become the primary form of free-to-air broadcasting in many countries, offering improved picture quality and the capacity to carry multiple channels within a single frequency. Reception typically requires a television antenna and a compatible receiver, such as a HD/UHD TV or set-top box. The conversion from analog to digital broadcasting, known as the digital transition or analog switch-off (ASO), began with experimental transmissions in the 1990s. By the mid-2000s, many governments had established timelines for phasing out analog signals, with deadlines for the changeover, often including subsidies for equipment upgrades and limited exemptions for remote areas. Regional technical standards differ widely. North America and South Korea developed ATSC 1 and ATSC 3.0, while Europe and most of Africa and Oceania primarily use DVB-T and DVB-T2. Japan and much of Central and South America adopted ISDB-T and ISDB-Tb, and China operates the DTMB standard. Some of these standards also support mobile reception and interactive features. By late 2024, the International Telecommunication Union and DVB/EBU reported that more than 160 countries had completed their DTV transition, while some states were still in various transition phases. Digital terrestrial television continues to play an important role in global media distribution. It is particularly significant for audiences who rely on it for regional news and live sports, despite competition from multichannel video programming distributors (MVPD)s and the rapid growth of over-the-top streaming (OTT) services. Several countries are adopting newer standards that offer improved video resolution and add functions that link over-the-air signals with online platforms. Additionally, over-the-air television is also used to carry pertinent emergency alerts during natural disasters and other crises.

Tema degli esploratori: diritto e tecnologia (deposito sistematico; ricerca «Digital Services Act»).
Fonte: Wikipedia in inglese, voce «Digital terrestrial television» — https://en.wikipedia.org/wiki/Digital_terrestrial_television
Wikidata Q1083894: «sistema di trasmissione dei segnali televisivi» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q1083894
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Digital_terrestrial_television?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1376164814, consultata il 2026-10-31T07:46:18.718Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: ee2ad0273c92da7fd0ea60fb686f5d46473e888d0af3479e86780b8083525fc0