4K Ultra High Definition (UHD)

4K resolution, also called 4K high-definition (or UHD for Ultra-High Definition) is a digital TV phrase used to describe a display resolution of up to 3,840 pixels in the horizontal and a vertical resolution of 2,160 pixels. It is four times the number of pixels on a 1080p display. In cinemas, 4K resolution is slightly higher at 4,096 in the horizontal.

Recommended Reading: What is HDTV?

Standards and Upscaling

Newer standards, such as HDMI 2.0, support 4K, allowing 2160p video to be displayed at 60 frames per second. While older standards do work with 4K, there is a loss of quality and frame rate. Newer 4K displays will upconvert 1080p and lower resolution video. Do upconvert, techniques like video smoothing and noise reduction will create a picture that looks sharp on the upscaled display.

Viewing 4K Media

While visual quality is harder to detect at the higher resolutions, the picture clarity and sharpness of 4K is visually apparent on larger screen sizes (i.e. 50 inch displays and larger). Streaming video services, such as Netflix and YouTube support 4K video content and Ultra HD Blu-ray discs offer 4K movies.

4K resolution

Image Source: 4K UHD Picture Quality (Courtesy of Samsung)

Previous articleIFTTT
Next articleFake News
Vangie Beal
Vangie Beal
Vangie Beal is a freelance business and technology writer covering Internet technologies and online business since the late '90s.

Top Articles

Huge List Of Texting and Online Chat Abbreviations

From A3 to ZZZ we list 1,559 text message and online chat abbreviations to help you translate and understand today's texting lingo. Includes Top...

How To Create A Desktop Shortcut To A Website

This Webopedia guide will show you how to create a desktop shortcut to a website using Firefox, Chrome or Internet Explorer (IE). Creating a desktop...

The History Of Windows Operating Systems

Microsoft Windows is a family of operating systems. We look at the history of Microsoft's Windows operating systems (Windows OS) from 1985 to present...

Hotmail [Outlook] Email Accounts

  By Vangie Beal Hotmail is one of the first public webmail services that can be accessed from any web browser. Prior to Hotmail and its...

Unregulated Power Supply Definition...

An unregulated power supply is a system that transforms input voltage into direct...

Cybersecurity Awareness Training Definition...

Cybersecurity awareness training informs employees of the attack surfaces and vectors in their...

OST File Definition &...

An OST file, or offline storage table (.ost) file, is an Offline Outlook...