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)

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

Related Articles

Human Resources Management System

A Human Resources Management System (HRMS) is a software application that supports many functions of a company's Human Resources department, including benefits administration, payroll,...

How To Defend Yourself Against Identity Theft

Almost every worldwide government agency responsible for identity theft issues will tell you the same thing: The first step to fighting identity theft is...

Infographic

An infographic is a visual representation of information or data. It combines the words information and graphic and includes a collection of imagery, charts,...

Phishing

What is phishing? Phishing is a type of cybercrime in which victims are contacted by email, telephone, or text message by an attacker posing as...

ScalaHosting

ScalaHosting is a leading managed hosting provider that offers secure, scalable, and affordable...

HRIS

Human resources information system (HRIS) solutions help businesses manage multiple facets of their...

Best Managed Service Providers...

In today's business world, managed services are more critical than ever. They can...