The resolution Ultra-HD / 4K

Schematical comparison of Full-HD and Ultra-HD
Schematical comparison of Full-HD and Ultra-HD

What offers Ultra-HD / 4K?

Ultra-HD / 4K (UHD-1) offers with its 3840 x 2160 pixel a four times higher resolution than Full-HD and a twenty times higher resolution than SD. The challenge is, there is a naming confusion in the area of entertainment electronics as well as at smartphone & Co. and seemingly, nobody knows what is actually what. Following table may help:

     RESOLUTIONS     
Designation Info
SD (Standard Definition) 720 x 576, aspect ratio 16:9
HD (High Definition) / 720p 1280 x 720, aspect ratio 16:9
Full-HD (Full High Definition) / 1080p / 2K 1920 x 1080, aspect ratio 16:9
Ultra-HD (Ultra High Definition) / 4K / UHD / UHD-1 3840 x 2160, colloquial also known as 4K Ultra-HD, even if that is not entirely correct (see below, next chapter)
5K 5120 x 2880, aspect ratio 16:9
DCI (Digital Cinema Initiatives) / DCI-4K / Cinema 4K / native 4K 4096 x 2160, by cropping made to the typical CinemaScope format 21:9
UHD-2 / 8K 7680 x 4320, that is eighty times of SD resolution

 RESOLUTIONS 

     RESOLUTIONS     
SD (Standard Definition)
720 x 576, aspect ratio 16:9
HD (High Definition) / 720p
1280 x 720, aspect ratio 16:9
Full-HD (Full High Definition) / 1080p / 2K
1920 x 1080, aspect ratio 16:9
Ultra-HD (Ultra High Definition) / 4K / UHD / UHD-1
3840 x 2160, colloquial also known as 4K Ultra-HD, even if that is not entirely correct (see below, next chapter)
5K
5120 x 2880, aspect ratio 16:9
DCI (Digital Cinema Initiatives) / DCI-4K / Cinema 4K / natives 4K
4096 x 2160, aspect ratio 17:9; by cropping made to the typical CinemaScope format 21:9
UHD-2 / 8K
7680 x 4320, that is eighty times of SD resolution

Why this mixup of terminologies?

Ultra-HD or 4K or even 4K Ultra-HD? The current user gets confused mainly because manufacturers juggle with the names and partly, they use the same label for articles with different resolution. Colloquial, resolutions with about 4000 pixel in the horizontal are called „4K“. More exactly it has to be distinguished between UHD and DCI resolution: UHD has 3840 x 2160 pixel like mentioned above. DCI (Digital Cinema Initiatives) is the 4K format used by digital cinemas and has a resolution of regularly 4096 x 2160 pixel. In technical view, 4K and UHD are different!

The official Ultra-HD logo (green), and manufacturer-own label creations

However, in everyday life the name „4K Ultra-HD“ is often used. And even if the CEA already in 2012 decided the name Ultra-HD has to replace the name 4K preferred until then, there is still disagreement about the naming. Like mentioned above, chiefly manufacturers mix names together for promotion proposes.

The label QFHD is also used sometimes. Don't get confused! For example, a display with a resolution of 3860 x 2160 is called QFHD or 2160p/i. QFHD stands for Quad Full High Definition and the „quad“ relates to the four times higher resolution than Full HD. QFHD is just another name for Ultra-HD. .

Please note in practise

The current consumer which want to get a new TV device, for example, has to keep in mind just following: All symbols / letterings / logos and labels at products only point to the potential performance of the device. Images and movies can be enjoyed in the quality announced not before all components of the system are adjusted to each other, and if the source material fits, and if the data line is appropriate fast.

Delock products in the area of Ultra-HD / 4K

Currently, Delock offers nearly 300 items in the product areas adapter / converter, cable and multimedia which support Ultra-HD / 4K. A great number of different adapters for diverse requirements and 4K cable in various lengths for HDMI, DisplayPort™ and USB Type-C™ are available, as well as docking stations, splitters and switches. The Delock 4K repeaters can be used for cable extension.

Active and passive DisplayPort™ adapters

With the Ultra-HD / 4K DisplayPort™ adapters by Delock, a Ultra-HD / 4K display can be connected to the system via a free DisplayPort™ interface in order to get Ultra-HD resolution. The adapters are downwards compatible to Full-HD 1080p. Delock has active and passive 4K DisplayPort™ adapters in its range:

Aktive adapters offers an active conversion and are also suitable for graphic cards that can not output DP++ signals. The only system requirement in this case is a free DisplayPort™ female.

Passive adapters require a free DisplayPort™ DP++ female at the graphic card .

Be it active (e.g. DisplayPort™ 1.2 > HDMI) or passive (e.g. DisplayPort™ 1.2 > DVI): There is a great adapter diversity at Delock

More Ultra-HD / 4K adapters

The Delock product range not only offers active and passive Ultra-HD / 4K DisplayPort™  adapters. Below you can find a list of all available port combinations for adapters with Ultra-HD / 4K support to serve (almost) any purpose:

  • DisplayPort™ to DVI
  • DisplayPort™ to HDMI
  • Mini DisplayPort™ to DVI
  • Mini DisplayPort™ to HDMI
  • USB Type-C™ to HDMI
  • USB Type-C™ to DisplayPort™
  • USB Type-C™ to Mini DisplayPort™
  • USB Type-C™ to DVI
  • HDMI to DisplayPort™
  • Thunderbolt™ 3 to HDMI
  • Thunderbolt™ 3 to DisplayPort™

Discover all Delock Ultra-HD / 4K products!

Delock Ultra-HD / 4K cables
Delock Ultra-HD / 4K adapters und converters
Delock Ultra-HD / 4K multimedia items
 TO THE TOP