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Introduction to 4K Ultra HD

by Retired: Senior Social Media Specialist on ‎07-08-2013 05:21 PM - edited on ‎09-19-2020 02:04 PM by (1,912 Views)

4K Ultra HD offers four times the resolution of 1080p HDTV (twice as many pixels in each direction, horizontally and vertically). The decreased pixel size of 4K Ultra-HD TVs dramatically improves picture clarity. Meanwhile, 4K Ultra HD's deeper, broader color palette makes everything you watch more vibrant and lifelike, giving you a phenomenal viewing experience.


If you're interested in an amazing home theater experience, keep reading to find out what you need to know about 4K Ultra HD.


The Technical Stuff


The technology for 4K Ultra HD had to be developed from scratch. So not only did manufacturers need to build a video device capable of displaying the higher resolution, they also needed cameras that were able to record the content. A camera manufacturer called RED built a camera that can shoot video with the higher bit rate required to capture Ultra HD's finer resolution and broader color gamut. Resolution is made up of tiny picture elements called pixels. The pixel count for 4K Ultra HD is 3840 x 2160, compared to 1080p HD at 1920 x 1080. (The "4K" in the name represents an approximation of the horizontal pixel count.)


How can they fit all those pixels into one screen? Special cameras, like the one developed by RED, are used to record a movie or TV show in 4K Ultra HD. The content is then electronically compressed to allow the large amount of data to be transmitted more efficiently. An advanced processor within the TV receives the compressed data and restores it to its original 4K format for display. Even with lower-resolution signals like 1080p HD, your 4K Ultra-HD TV can upconvert the resolution, intelligently filling in the missing pixels to create the 4K experience.


Every Seat is the Best Seat in the House


With 4K Ultra HD, the pixels are so small that you can still experience a seamless picture at a closer viewing distance. For example, you can sit closer to an 84" 4K Ultra-HD TV than to a 46" 1080p HDTV. With double the resolution and deeper, richer colors, 4K Utra HD gives you the ultimate, smooth picture.


How 3D Works with 4K Ultra HD


Most 4K Ultra-HD televisions include support for 3D that looks better than ever. Passive 3D technology is widely used by Ultra-HD TV manufacturers because each eye will see a full 1080p image. With a full 1080p picture for each eye, you experience greater detail and less eye fatigue. In addition, passive 3D glasses are lightweight and cost much less than active glasses.


Finding the Right Cables


The primary factors affecting an HDMI cable's ability to provide a picture are the amount of data being sent and the length of the cable. Ultra HD takes up much more bandwidth — four times as much, to be exact. This means the cable needs to handle four times more data, and your picture quality will diminish with the length of your cable. HDMI cables still play a vital role in your 4K Ultra-HD home theater, which is why choosing high quality will make a difference. You can learn more about that by checking out our article HDMI Cords: Quality Matters.


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Industry recommendations provided by AudioQuest and Atlona.