Ultra High Definition (UHD) or Ultra HD includes two primary formats, 4K and 8K, with resolutions of 3840 x 2160 and 7680 x 4320 pixels respectively. UHD improves video and sound quality significantly, allowing for a more immersive experience, but faces challenges such as limited content availability and high costs. Various frame rates and color spaces enhance the viewing experience, though benefits are most noticeable on larger screens.

1. Ultra High Definition TV

2. Introduction
• Ultra HD (also known as “Ultra High Definition” /
“Super Hi-Vision” / “Ultra HDTV” / “UHD” / “UHDTV”
/ “4K” / “8K”), is a video format conceptualized by
the Japanese public broadcasting network, NHK.
• The Consumer Electronics Association (CEA)
announced that the official term “Ultra HD” would
be used for any display with a 16 x 9 ratio with at
least 1 digital input cable carrying a minimum
resolution of 3,840 x 2,160 square pixels.

3. Ultra HDTV Resolution
• Currently there are 2 forms of Ultra HD, 4K and 8K,
both have an aspect ratio of 16:9
• 4K Ultra HD (2160p) has a resolution of 3840 × 2160
(8.3 megapixels), which is roughly equivalent to 4K
cinema or 4 times the number of pixels in Full HD
format (1080p).
• 8K Ultra HD (4320p) produces an astonishing 7,680 ×
4,320 pixel resolution (33.2 megapixels), which is
roughly the equivalent of an IMAX film or 16 times
the pixel resolution of Full HD (1080p).

4. Comparison of 8K UHDTV, 4K UHDTV, HDTV and SDTV resolution

5. Ultra HD Frame rate
• Ultra HDTV frame rates - 120, 60, 59.94, 50, 30,
29.97, 25, 24, and 23.976 frames per second.
• The Rec. 2020 color space can reproduce colors that
can not be shown with the Rec. 709 (HDTV) color
space. In coverage of the CIE 1931 color space the
Rec. 2020 color space covers 75.8%, digital
cinema covers 53.6%, the Adobe RGB color
space covers 52.1%, and Rec. 709 covers 35.9%
Ultra HD Color space

6. Diagram of the CIE 1931
color space that shows
the Rec.2020 (UHDTV) c
olor space in the outer
triangle and Rec.
709 (HDTV) color space
in the inner triangle.

7. Ultra HD Upscaling
• The Ultra HD 4K resolution of 3840 × 2160 simplifies
video scaling from the popular high-definition source
formats 720p and 1080p.
• A 1080p video source can be scaled perfectly by
simply doubling each pixel horizontally and vertically,
using 4 pixels on the Ultra HD 4K display to represent
each pixel from the 1080p source.
• Similarly, a 720p source pixel can be tripled
horizontally and vertically, using 9 pixels on the 4K
display for each pixel from the 720p source.
• The 720p and 1080p resolutions will also evenly
divide the 8K resolution of 7680 × 4320.

8. Ultra HD Luminance coefficients
• If a luminance (Y’) signal is made that it uses the
R’G’B’ coefficients 0.2627, 0.6780, and 0.0593.
Other Ultra HDTV Details
• In addition to the significant upgrade in video
quality, sound quality is also significantly increased
with Ultra HDTV. 24 channels of audio can be used
with 24 speakers, producing a difference
comparable to the Ultra HD video resolution.
• Currently, only 3 cameras are able to capture video
in Ultra HDTV format, and can only capture about 20
minutes (requiring 4 terabytes) in a single day.

9. Advantages
• It pictures have more detail
• Better image depth
• Better colour handling
• A more cinematic, immersive experience
• It makes 3D better

10. Disadvantages
• Not much content available
• Wont see much of a difference if the screen is
smaller than 50 inches
• Expensive-Samsung’s new flagship 65-inch
JS9500 quantum dot UHD set is priced at
$6,000
• The High Dynamic Range Conundrum.

11. Bibliography
• ultrahdtv.net
• pcmag.com
• techradar.com
• Fobes.com
• Wikipedia

12. • Thank You!