UHD Alliance prsenterer "UHD Premium" specifikation & logo

05 Jan 2016 | Rasmus Larsen |

Hvad definerer et godt Ultra HD-tv? UHD Alliancen mener, at de har svaret og med deres nye "UHD Premium" certificeringsprogram vil de kun lade de bedste tv-skrme p markedet bre deres logo.

Ultra HD Premium specifikation

UHD Alliance er skabt af tv-producenter, Hollywood-studier, indholdsdistributrer og andre teknologiselskaber. Mlet har vret at skabe en premium specifikation til tv-skrme og andre led i den overordnede kde for at sikre best mulig billedkvalitet.

P CES 2016 har UHD Alliance prsenteret specifikationer, der dkker over bl.a. oplsning, HDR, lysstyrke, sortniveau, farverum, farveprcision og mere. Specifikationerne giver ogs anbefalinger hvad angr immersive audio.

UHD Premium logo


Uafhngige testcentre rundt om i verden er blevet etableret for at certificere tv-skrme. De frste tv-skrme, som vil bre logoet afslres senere p ugen p CES i Las Vegas. Ud fra specifikationerne kan det dog allerede nu siges, at f - hvis overhovedet nogen - 2015-skrme vil opfylde kravene.

- The criteria established by this broad cross section of the Ultra HD ecosystem enables the delivery of a revolutionary in-home experience, and the ULTRA HD PREMIUM logo gives consumers a single, identifying mark to seek out so they can purchase with confidence. siger UHD Alliance.

Tekniske krav

I UHD Alliances egne ord:

The UHD Alliance has developed three specifications to support the next-generation premium home entertainment experience. The three specifications cover the entertainment ecosystem in the following categories:
  • Devices (currently, television displays, with other devices under consideration)
  • Distribution
  • Content

    A high level overview of each technical specification can be found below.

    Devices:

    The UHD Alliance supports various display technologies and consequently, have defined combinations of parameters to ensure a premium experience across a wide range of devices. In order to receive the UHD Alliance Premium Logo, the device must meet or exceed the following specifications:
    Image Resolution: 3840x2160
    Color Bit Depth: 10-bit signal
    Color Palette (Wide Color Gamut)
    Signal Input: BT.2020 color representation
    Display Reproduction: More than 90% of P3 colors
    High Dynamic Range
    SMPTE ST2084 EOTF
    A combination of peak brightness and black level either:
    - More than 1000 nits peak brightness and less than 0.05 nits black level
    OR
    - More than 540 nits peak brightness and less than 0.0005 nits black level

    Distribution:

    Any distribution channel delivering the UHD Alliance content must support:
    Image Resolution: 3840x2160
    Color Bit Depth: Minimum 10-bit signal
    Color: BT.2020 color representation
    High Dynamic Range: SMPTE ST2084 EOTF

    Content Master:

    The UHD Alliance Content Master must meet the following requirements:
    Image Resolution: 3840x2160
    Color Bit Depth: Minimum 10-bit signal
    Color: BT.2020 color representation
    High Dynamic Range: SMPTE ST2084 EOTF

    Content Master:

    The UHD Alliance recommends the following mastering display specifications:
    Display Reproduction: Minimum 100% of P3 colors
    Peak Brightness: More than 1000 nits
    Black Level: Less than 0.03 nits

    The UHD Alliance technical specifications prioritize image quality and recommend support for next-generation audio.



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