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  2. High-definition television in the United States - Wikipedia

    en.wikipedia.org/wiki/High-definition_television...

    High-definition television (HDTV) in the United States was introduced in 1998 and has since become increasingly popular and dominant in the television market. Hundreds of HD channels are available in millions of homes and businesses both terrestrially and via subscription services such as satellite, cable and IPTV.

  3. High-definition television - Wikipedia

    en.wikipedia.org/wiki/High-definition_television

    High-definition television (HDTV) describes a television or video system which provides a substantially higher image resolution than the previous generation of technologies. The term has been used since at least 1933; [ 1 ] in more recent times, it refers to the generation following standard-definition television (SDTV).

  4. Digital television in the United States - Wikipedia

    en.wikipedia.org/wiki/Digital_television_in_the...

    High definition—720p; High definition—1080i; High definition—1080p (only used by a few cable operators and some terrestrial stations broadcast in 1080p) Most digital television sets sold in the U.S. use a display with a 16:9 aspect ratio to optimally display HDTV-formatted content. Lower-resolution sources like regular DVDs may be ...

  5. How to find the best TV antenna for free HD channels - AOL

    www.aol.com/news/2018-03-12-best-tv-antenna-for...

    You can stream a lot of TV online, but for things like the Olympics and breaking news, you'll want a local broadcast station to deliver the goods. Buying an antenna isn't like buying a toaster ...

  6. List of digital television deployments by country - Wikipedia

    en.wikipedia.org/wiki/List_of_digital_television...

    The BBC is broadcasting BBC HD as a free-to-air channel from the Astra 2D satellite, and the channel can be viewed for free with suitable satellite reception equipment. There are additional equipment and subscription charges for HD from Sky TV but they are broadcasting over 30 channels in the HD format.

  7. High-definition television transition - Wikipedia

    en.wikipedia.org/wiki/High-definition_television...

    The transition to high-definition television is a process by which standard-definition (SD) television signals are upgraded to a high-definition (HD) format. [1] In this process, channels usually either simulcast their HD signals alongside the existing SD signals or broadcast exclusively in HD.

  8. Free-to-view - Wikipedia

    en.wikipedia.org/wiki/Free-to-view

    The remaining channel aimed exclusively at the UK that use the Astra satellites at 28.2°E with a Europe-wide beam and remain free-to-view and encrypted is regions STV HD (Aberdeen, Dundee, Edinburgh), London Live and they can be viewed with a Sky Videoguard receiver and a Sky viewing card, either an inactive former Sky pay-TV card or one for ...

  9. Terrestrial high-definition television - Wikipedia

    en.wikipedia.org/wiki/Terrestrial_high...

    Terrestrial high-definition television is a form of broadcast high-definition television that is received via the terrestrial airwaves using either a VHF television aerial or a UHF television aerial. Depending on the country, the high definition television channels are broadcasts using either ATSC , ISDB-T , DVB-T or DVB-T2 .

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