4K2K

The articles 4K2K , 2K (film) , Ultra HD , Ultra High Definition Television and 4K (image resolution) thematically overlap. Help me to better differentiate or merge the articles (→  instructions ) . To do this, take part in the relevant redundancy discussion . Please remove this module only after the redundancy has been completely processed and do not forget to include the relevant entry on the redundancy discussion page{{ Done | 1 = ~~~~}}to mark. Enzoklop ( discussion ) 5:51 p.m. , Sep 16. 2013 (CEST)

This article explains 4K2K in the field of television. The terms 2K and 4K in the field of cinema films are explained under 2K (film) .

4K2K is a high-resolution digital video format that has approximately four times as many picture elements (pixels) as Full HD . The designation 4K2K, with the two K as 1,000 prefixes for units of measurement, refers to the image resolution of approximately 4000 × 2000 pixels.

Details

Relative size of unscaled video resolutions on a 4K display. As popular as this representation is, its informative value is so little. On the one hand, the detail content of pictures cannot be represented by the picture size; on the other hand, the differences in the high-resolution formats are barely perceptible, whereas they are obvious in the low-resolution formats.

4K DLP CINEMA (Texas Instruments)

So far, two different resolutions are known for the 4K2K format:

• 4096 × 2160 pixels - also known as 4K (occasionally "Cinema 4K")
• 3840 × 2160 pixels - also known under the names 2160p / i , QFHD (Quad Full High Definition) and UHD (Ultra High Definition) . Here the side lengths of the 1080p resolution (1920 pixels in width and 1080 in height) are each doubled, which quadruples the number of pixels.

4K2K is the successor to the HDTV image formats 720p and 1080i / p. Unlike HDTV, however, the format was not primarily developed for home cinema , but is also to be used increasingly in medicine, in educational institutions and in computer games.

Entrance sign of the Botanical Garden in Life of Pi: Shipwreck with Tiger from 2012. The detail covers about 0.3% of the image area.
   Line 1:
   Extract from the original 2160p video Line 2: Scaled down to 1440p and scaled up again to 2160p
   Line 3: Scaled down to 1080p and scaled up again to 2160p
   Line 4: Scaled down to 720p and scaled up again to 2160p
   Line 5: Scaled down to 540p and again upscaled to 2160p
   line 6: downscaled to 432p and upscaled again to 2160p
Obvious sharpness losses only occur below 1080p.

In mid-2014, Stiftung Warentest advised not to base purchase decisions for televisions on the heavily advertised ultra-high resolution, because the difference between UHD and the common Full HD is difficult to see for the human eye, and there is hardly any image material in UHD. Resolution. After the first films were delivered in UHD format in 2016, Stiftung Warentest came to the conclusion in August 2016 that not even every second viewer recognized the pixel advantage of UHD, but UHD still has visible advantages in connection with the image enhancement technology HDR , albeit at Costs of higher electricity consumption.

New regulation for consumer electronics

The Consumer Electronics Association (CEA) decided on October 18, 2012 that Ultra HD should replace the previously propagated designation 4K. According to the definition, Ultra HD televisions must have a minimum resolution of 8 million pixels (four times as many pixels as with full HD televisions). The usual resolution is 3840 × 2160 pixels, but it can vary depending on the aspect ratio and manufacturer. In addition, Ultra HD televisions must have connections (inputs) with which Ultra HD content can be transmitted. Technically suitable for this are, for example, the HDMI interfaces from version 2.0 and DisplayPort from version 1.2 with four lines: 2160 MByte / s (17.28 GBit / s), sufficient for 3840 × 2400 or 4096 × 2560 pixels.

literature

• Frank Schäfer: CES 2010: 152 inch 3D plasma with 4K2K resolution. In: TVfacts.de. January 12, 2010, accessed June 3, 2013 . 
• 4K2K. In: FullHDTVs.de. March 2, 2010, accessed June 3, 2013 . 
• Michael Trei: Just when you thought 1080p was it, Mitsubishi demos 4K2K. In: DVICE. February 17, 2010, archived from the original on February 21, 2010 ; accessed on June 3, 2013 . 

Individual evidence

1. ↑ UHD TV - How to fly without wings. In: www.test.de. Stiftung Warentest, June 26, 2014, accessed on September 1, 2016 . 
2. ↑ UHD television - What does the "crisp" technology bring? In: www.test.de. Stiftung Warentest, August 31, 2016, accessed on September 1, 2016 .