HDMI - Installation guide

4K/Ultra HD connection of sources and displays

Consumers, resellers and installers are encountering compatibility and connectivity issues between various 4K /Ultra HD devices. At Nuetec we have identified challenges and solutions this document is highlighting them and will be useful to all.

4K A Quick Guide

4K is a term widely used to describe a very high resolution large size files of video and images. In its simplest form 4K is a resolution that is 4 times larger than 1080p.

4K is also a format that has game-changing features which make it very difficult to describe 4K as a homogenous single specs standard. To better evaluate what 4K is and how many of its features users are able to harness and benefit from,  please review the sets of specifications that are described in this document.

HDMI (High-Definition Multimedia Interface) is a proprietary audio/video interface for transmitting uncompressed video data and digital audio data from a HDMI-compliant source device (e.g. DVD & Blu-ray players) to a compatible video display (HD/4K TVs & Projector). HDMI has become the de facto standard for high-definition home theatre applications, and is now prevalent on high-end graphics card for Gamers.

HDR

HDR is the game changer which will make viewing far more enriching for consumers at homes and professionals at work.

HDR’s effect is most prominent on LCD screens. OLED screens emulate some of the benefits of HDR technology but doing so via different means.

1billion colour pigments make a difference

Sub sampling 4:4:4/4:2:2/4:2:0

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This feature refers to colour sub sampling. 4:4:4 is used in content mastering, but 4K Ultra UHD is distributed via 4:2:0 standard format

Much has been made of the "4:4:4 60Hz" term. In many cases it is used to highlight speed capabilities.

At NueTec we would like to highlight some facts related to the constant comparison between images iluminated by one colour sub sampling or another.

Please note, the term 4:4:4 60Hz relates to bandwidth requirement and has no relation to image quality.

This is the measure with which colour bit depth is defined by. Streamed and broadcasted video as well as 1080p and UHD discs played using Blu ray player all use 8bit colour.  Each pixel is made of eight bits for each of the three primary colours.   There are 256 possible 8-bit binary numbers, each Red, Green and Blue pixel presented via 256 shades. 10bit Deep Colour offers a major improvement as it is able to contain a vastly greater numbers of colours pixels and shades (pigments).

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HEVC/H.265 4K encoded discs

Watch a colourful display employing almost 80,000 times more colours and shades.

Benefit from the most impressive HDR display, made possible by HEVC/H.265 codec.

Please click on the arrow below to see the full list of movies encoded to offer superior colours and contrasts.

Fibre Optic cables

Fibre optics are rapidly replacing copper cables as they are far better at transmitting high rates of data by overcoming the limitation of copper technology that is in comparison inefficient and fraught with many limitations due to its electro magnetic properties.