Ask Rob: The Age of Ultra HD
Ultra HD/4K televisions have been sold since 2012. However, it took a full six years before the first UHD Blu-Ray player hit the market. In the meantime, streaming boxes such as Roku and Amazon Firestick came out with 4K devices allowing for streamed 4K content, which was most often found on Netflix and YouTube.
More and more UHD content has become available as cable and satellite providers have increased their offerings, and broadcasters are on the verge of transmitting Ultra HD, through a new standard called ATSC 3.0. So, we are finally seeing the promise of Ultra HD, which is great news.
Since we are now seeing Ultra HD content finally reach its potential, the questions now pertain to features and bandwidth, and what will be needed to ensure it all works. How will developments such as HDMI 2.1, HDCP 2.2, High Dynamic Range, wide
We live in
Ultra HD Evolution
Early Ultra HD was a little confusing, as it came without source devices or content, and there was even some uncertainty about what to call it.
The combination of these improvements is focused on “immersion”, which provides a more realistic visual experience never experienced before. This is consistent
The key to installing UHD displays is a proper understanding of the new features and technologies, how they co-exist, and what effect (if any) each will have on the data payload. Understanding what will be going down the proverbial pipe will enable you to know the size, type
Understanding the technical specifications of HDMI 2.1 is paramount. The
areas which systems integrators must pay attention to are:
- Resolution – The number of pixels on an image at one point in time. Resolutions for HDMI 2.1 include 1920 x 1080(FHD), 3840 x 2160(4KUHD), 5120 x 2160(5K Wide UHD), 7680 x 4320(8K UHD) & 10420 x 4320(10K Wide UHD)
- Frame Rate – This refers to the number of times an image refreshes per second, referred to as FPS (frames per second). HDMI 2.1 enables refresh rates up to 120 FPS
- Color Depth (bits) – In digital television, simply put, pictures are based on the three primary colors: Red, blue and green. Each of the three
colourshas a certain amount of shades based on the bit value. There are three different bit values for red, blue and green 8, 10, 12, 14 and 16bit color. This equates to trillions of colors HDMI 2.1 capable displays can reproduce
- Data Rate – Since its inception in 2002, each new version of HDMI has increased the amount of data the HDMI cable must be able to pass. With each major iteration, the maximum data rate has increased, going from 4.95 Gbps to 10.2 Gbps, to 18 Gbps to the 48 Gbps requirement introduced with HDMI 2.1
Article written by Kordz