high definition television wikipedia - EAS

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  1. dreamstime.com

    High-definition television ( HD) describes a television system providing an image resolution of substantially higher resolution than the previous generation of technologies. The term has been used since 1936, but in modern times refers to the generation following standard-definition television (SDTV), often abbreviated to HDTV or HD-TV.

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    What is high-definition TV?
    High-definition television (HDTV) is a television system providing an image resolution that is of substantially higher resolution than that of standard-definition television (SDTV).

    High-definition television - Wikipedia

    en.wikipedia.org/wiki/High-definition_television
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    What does HDTV stand for?
    TV resolution standard. High-definition television (often shortened to High-Definition and HD or High Definition) describes a television system providing an image resolution of substantially higher resolution than the previous generation of technology.

    High-definition television - Wikipedia

    en.wikipedia.org/wiki/High-definition_television
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    When was the first high definition TV introduced in the UK?
    The British high-definition TV service started trials in August 1936 and a regular service on 2 November 1936 using both the (mechanical) Baird 240 line sequential scan (later to be inaccurately rechristened 'progressive') and the (electronic) Marconi-EMI 405 line interlaced systems.

    High-definition television - Wikipedia

    en.wikipedia.org/wiki/High-definition_television
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    What is the origin of high definition?
    Since 1917, High Definition starts as Full Picture Form. The term high definition once described a series of television systems originating from August 1936; however, these systems were only high definition when compared to earlier systems that were based on mechanical systems with as few as 30 lines of resolution.

    High-definition television - Wikipedia

    en.wikipedia.org/wiki/High-definition_television
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    High-definition television - Wikipedia

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

    High-definition television (HD or HDTV) describes a television system providing a substantially higher image resolution than the previous generation of technologies. The term has been used since 1936, but in modern times refers to the generation following standard-definition television (SDTV),

     ...

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    Formats

    HDTV may be transmitted in various formats:
    • 720p (1280 horizontal pixels × 720 lines): 921,600 pixels
    • 1080i (1920×1080) interlaced scan: 1,036,800 pixels (~1.04 MP).

     ...

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    History

    The term high definition once described a series of television systems originating from August 1936; however, these systems were only high

     ...

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    Notation

    HDTV broadcast systems are identified with three major parameters:
    • Frame size in pixels is defined as number of horizontal pixels × number of vertical pixels, for example 1280 × 720 or 1920 × 1080. Often the number of horizontal pixels is implied from

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    Recording and compression

    HDTV can be recorded to D-VHS (Digital-VHS or Data-VHS), W-VHS (analog only), to an HDTV-capable digital video recorder (for example

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    See also

    • Display motion blur
    • Glossary of video terms
    • High Efficiency Video Coding

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    Further reading

    • Joel Brinkley (1997), Defining Vision: The Battle for the Future of Television, New York: Harcourt Brace.
    • High Definition Television: The Creation, Development and Implementation of HDTV Technology by Philip J. Cianci (McFarland & Company, 2012)

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    External links

    History
    • L'Alta Definizione a Torino 1986–2006 – the Italian HDTV experience from 1980s to 2006 – in Italian – C.R.I.T./RAI
    • The HDTV Archive Project
    European adoption

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  4. Truyền hình độ nét cao – Wikipedia tiếng Việt

    https://vi.wikipedia.org/wiki/Truyền_hình_độ_nét_cao

    Truyền hình độ nét cao (tiếng Anh: high-definition television, viết tắt HDTV) là định dạng kỹ thuật phát truyền hình kỹ thuật số với độ phân giải tốt hơn so với bình thường (như màn hình TV thường, hay SDTV). HDTV được gọi là truyền hình kỹ thuật số (digital television - DTV) vì cần băng thông để xử lý kỹ thuật nén trong tập tin.

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  6. Ultra-high-definition television - Wikipedia

    https://en.wikipedia.org/wiki/Ultra-high-definition_television

    Ultra-high-definition television (also known as Ultra HD television, Ultra HD, UHDTV, UHD and Super Hi-Vision) today includes 4K UHD and 8K UHD, which are two digital video formats with an aspect ratio of 16:9.These were first proposed by NHK Science & Technology Research Laboratories and later defined and approved by the International Telecommunication Union (ITU).

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    • High Definition Television – Wikipedia

      https://de.wikipedia.org/wiki/High_Definition_Television
      • Audio
        Grundsätzlich sind bei HDTV alle beim Digitalfernsehen oder auf der DVD zum Einsatz kommenden Tonformate möglich, wobei sich aber Dolby Digital durchsetzt. In den Transportströmen kann MPEG-1 Audio Layer 2 (MP2) bis Dolby Digital (AC3) von Mono bis Mehr…
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      • High-definition television - Wikipedia

        https://nl.wikipedia.org/wiki/High-definition_television
        Image
        Hd-tv-formaat is onderverdeeld in een groot aantal (36) subformaten, gebaseerd op het Amerikaanse ATSC-formaat. De meest toegepaste hd-tv-formaten zijn: 1. 1280 × 720, Progressive 30, 50 of 60 Hz, aangeduid als 720p30, 720p50 of 720p60 (HD ready), bitrate 1,11Gbps (50 Hz) 2. 1920 × 1080, Interlaced, 50 en 60 Hz, aang…
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        • High-definition television – Wikipédia

          https://sk.wikipedia.org/wiki/High-definition_television

          High-definition television ( HDTV) je formát vysielania televízneho signálu s výrazne vyšším rozlíšením, ako umožňujú tradičné formáty PAL, SECAM a NTSC. Vysiela sa digitálne, môže sa použiť ako jeden z formátov digitálnej televízie DVB.

        • High-definition television – Wikipedia

          https://no.wikipedia.org/wiki/High-definition_television
          Image
          Oppdateringsfrekvensen må tilpasses standardene som allerede er satt: 1. 23.976p 2. 24p (Kino) 3. 25p 4. 29.97p 5. 30p 6. 50p 7. 60p 8. 50i (som ved PAL/SECAM) 9. 60i (som ved NTSC)
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          • Ultra High Definition Television – Wikipedia

            https://de.wikipedia.org/wiki/Ultra_High_Definition_Television
            • Die in Genf ansässige UN-Sonderorganisation Internationale Fernmeldeunion (englisch International Telecommunication Union, ITU) konnte sich nicht auf eine Pixelanzahl einigen, daher wurden der Bezeichnung UHD gleich zwei Videoauflösungen zugeordnet. Im Mai 2012 wurde UHD als Standard vorgeschlagen. An der Erarbeitung beteiligt sind unter anderem die itali…
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            • High-definition television – Wikipedie

              https://cs.wikipedia.org/wiki/High-definition_television
              • Pro označení formátů obrazu HDTV se používají tři údaje: 1. Počet řádků: 720 nebo 1080 2. Prokládání: i jako interlaced(prokládané řádkování) nebo p jako progressive (neprokládané řádkování) 3. Počet snímků za sekundu: 23,976; 24; 25; 30; 50 nebo 60 První údaj o počtu řádků udává rozlišení obrazu — 720 řádků znamená rozlišení 1280 na 720 pixelů, 1080 řádků se rovná …
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              • High-Definition Multimedia Interface — Wikipédia

                https://fr.wikipedia.org/wiki/High-Definition_Multimedia_Interface

                La High-Definition Multimedia Interface ( HDMI) (en français, « Interface Multimédia Haute Définition ») est un standard et interface audio/vidéo totalement numérique pour transmettre des flux chiffrés constitués de données vidéo non compressées et des données audio pouvant être compressées. Elle est destinée au marché grand public.

                • Auteur: HDMI Founder (7 membres), HDMI Forum (87 membres)
                • Date de production: 2003 à aujourd'hui
                • Date de création: Décembre 2002
                • Type: Connecteur numérique audio/vidéo/donnée

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