ITU-R Recommendation BT.2020 or Rec. 2020 was posted on the International Telecommunication Union (ITU) website on August 23, 2012.[1][2][3][4] Rec. 2020 defines various aspects of ultra-high-definition television (UHDTV) such as display resolution, frame rate, chroma subsampling, color depth, and color space.[1]
Technical details
Resolution
Rec. 2020 defines two resolutions of 3840 × 2160 and 7680 × 4320.[1] These resolutions have an aspect ratio of 16:9 and use square pixels.[1]
Frame rate
Rec. 2020 specifies the following frame rates: 120p, 60p, 59.94p, 50p, 30p, 29.97p, 25p, 24p, 23.976p.[1] Only progressive frame rates are allowed.[1]
Digital representation
Rec. 2020 defines a color depth of either 10-bits or 12-bits.[1]
10-bits per component Rec. 2020 uses video levels where the black level is defined as code 64 and the nominal peak is defined as code 940.[1] Codes 0-3 and 1,020-1,023 are used for the timing reference.[1] Codes 4 through 63 provide video date below the black level while codes 941 through 1,019 provide video data above the nominal peak.[1]
12-bits per component Rec. 2020 uses video levels where the black level is defined as code 256 and the nominal peak is defined as code 3760.[1] Codes 0-15 and 4,080-4,095 are used for the timing reference.[1] Codes 16 through 255 provide video date below the black level while codes 3,761 through 4,079 provide video data above the nominal peak.[1]
System colorimetry
| Color space | White point | Primary colors | ||||||
|---|---|---|---|---|---|---|---|---|
| xW | yW | xR | yR | xG | yG | xB | yB | |
| ITU-R BT.2020 | 0.3127 | 0.3290 | 0.708 | 0.292 | 0.170 | 0.797 | 0.131 | 0.046 |
Rec. 2020 can reproduce colors that can not be shown with the HDTV color space.[5]
See also
- Ultra-high-definition television (UHDTV)
- High Efficiency Video Coding (HEVC) - Upcoming video codec that supports resolutions up to 8K UHDTV
- Rec. 709 - ITU-R Recommendation for HDTV
- Rec. 601 - ITU-R Recommendation for SDTV
References
External links
- ↑ a b c d e f g h i j k l m n BT.2020 : Parameter values for ultra-high definition television systems for production and international programme exchange, International Telecommunication Union, 23. August 2012. Abgerufen am 24. August 2012
- ↑ The international standard for Super Hi-Vision TV, NHK, 23. August 2012. Abgerufen am 30. August 2012
- ↑ 8K Ultra High Def TV Format Opens Options for TV Viewing, The Hollywood Reporter, 28. August 2012. Abgerufen am 30. August 2012
- ↑ ITU approves NHK's Super Hi-Vision as 8K standard, sets the UHDTV ball rolling very slowly, Engadget, 25. August 2012. Abgerufen am 30. August 2012
- ↑ Super Hi-Vision format, NHK. Abgerufen am 24. August 2012