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[Discussion] Different TV Screen Resolutions Explained!

2018-03-09 15:57:16
1403 2

Hello, Mi Fans!
Just about everyone has moved away from standard definition analog TVs in favor of the much superior high-definition televisions. They have a 16:9 aspect ratio, which is similar in appearance to a movie theater screen, and they are available with much higher resolution screens, which impress with their clarity, color and detail. Resolution is undoubtedly HDTVs biggest selling point. So, When you're shopping for a TV, one of the most obvious and prevalent numbers is the resolution. In this thread, I will try to explain what does it mean by "Resolution" and what are different types of it. So, Let's get started.

What Is Resolution:
  • The resolution of a television is the number of pixels in each dimension that the TV can display natively. A pixel is essentially a lit-up square that produces a specific color. The more pixels you have on a TV, the more detailed the picture on the screen will appear.

  • While the resolution isn't the only aspect of picture quality, it is important, and most people will easily notice and appreciate the difference between a high-resolution TV and a low-resolution one. Now, you don't see each individual pixel at work as they are too small to see from a distance, but if you go up very close to your TV screen you will see how the image is built from this grid of small coloured dots - and when you walk away from the screen, these small dots merge into one and all you see is one big image. So, in short the further away you are from the screen, then the less detail your eyes will actually be able to see.

Different TV Screen Resolutions:
  • There are different Tv Screen Resolutions devided into SDTV(Standard Definition TV) and HDTV(High Definition TV). In which HDTV contains resolutions like 720p, 1080i and 1080p, 4K UHD ect.

  • When talking about high definition television, you will also hear the resolution numbers followed by a “p” or an “i”. This is preceded by the number of rows. So you will hear a resolution referred to as 720p or 1080i or 1080p. “P” stands for progressive. “I” is for interlaced.
  • rogressive means that the rows of pixels are refreshed one row after the other like 1,2,3,4.  Interlaced means that the alternating rows are refreshed like rows 1,3,5,7 then 2,4,6,8. What you need to know is that progressive scanning gives better results. Right now high definition television shows are broadcast as 720p or 1080i.

Let's discuss each of them in detail:

Standard Definition:
  • Standard Definition TV (SDTV) is an older version of digital TV with picture quality similar to that of a DVD. Standard Definition usually has 640 x 480 pixel resolution and no defined aspect ratio. It’s better than analogue broadcasts but can’t compete with the quality created by new technologies. Newer TVs come in much larger screen sizes and most networks primarily cater for these wider screens, often cutting off the edges of programmes as they don’t fit the smaller models. Information such as sports scores also comes out small and fuzzy when reduced to fit on SDTVs.

  • An SDTV image outside the constraints of the SMPTE standards requires no non-proportional scaling with 640 pixels (as defined by the adopted IBM VGA standard) for every line of the image. The display and pixel aspect ratio is generally not required with the line height defining the aspect. For widescreen 16:9, 360 lines define a widescreen image and for traditional 4:3, 480 lines define an image.

High Definition:
  • When high-definition TVs became the norm, manufacturers developed a shorthand to explain their display resolution. The most common numbers you will see are 720p, 1080p and 2160p or 4K.

Here’s how the shorthand translates:
  • 720p = 1280 x 720 - is usually known as HD or “HD Ready” resolution.
  • 1080p = 1920 x 1080 - is usually known as FHD or “Full HD” resolution.
  • 1440p = 2560 x 1440 - commonly known as QHD or Quad HD resolution, and typically seen on gaming monitors and on high-end smartphones. 1440p is four times the resolution of 720p HD or “HD ready”.
  • 2160p = 3840 x 2160 - commonly known as 4K, UHD or Ultra HD resolution. It’s a very large display resolution and it’s found on high-end TVs and monitors. 2160p is called 4K because it offers four times the pixels of 1080p FHD or “Full HD”.
  • 4320p = 7680 x 4320 - is known as 8K and it offers 16 times more pixels than the regular 1080p FHD or “Full HD” resolution. Although you’re not going to see TVs or computer monitors with this resolution too soon, you can test whether your computer can render such a large amount of data.

Depending on the aspect ratio of your display, you are able to use only resolutions that are specific to its width and height. Some of the most common resolutions that can be used for each aspect ratio are the following:

  • 4:3 aspect ratio resolutions: 640×480, 800×600, 960×720, 1024×768, 1280×960, 1400×1050, 1440×1080 , 1600×1200, 1856×1392, 1920×1440, and 2048×1536.
  • 16:10 aspect ratio resolutions: - 1280×800, 1440×900, 1680×1050, 1920×1200 and 2560×1600.
  • 16:9 aspect ratio resolutions: 1024×576, 1152×648, 1280×720, 1366×768, 1600×900, 1920×1080, 2560×1440 and 3840×2160.

How does the size of the screen affect resolution?

  • The most important thing is not the screen size, but its ability to display the higher resolution images. The higher you set the resolution, the smaller the images on the screen will be, and there comes a point at which the text on the screen becomes so small it’s not readable. On a larger screen it is possible to push the resolution very high indeed, but if that screen’s pixel density is not up to par, you won’t get the maximum possible resolution before the image becomes unreadable.

  • UHD is an "umbrella term" that encompasses higher resolutions (more pixels) than HDTV, as well as more realistic color and higher frame rates. Today and this year, pretty much the only one of those improvements available in new TVs and content is 4K resolution.

  • When used in a home context, 4K/UHD means the TV's screen has a minimum resolution of 3,840 pixels wide and 2,160 pixels high, making it the equivalent to two 1080p screens in height and two in length. This resolution was originally known as "Quad HD," and it's used by basically every 4K TV.
  • Technically, "Ultra High Definition" is actually a derivation of the 4K digital cinema standard. However while your local multiplex shows images in native 4096 x 2160 4K resolution, the new Ultra HD consumer format has a slightly lower resolution of 3840 X 2160. This is one reason why some brands prefer not to use the 4K label at all, sticking with Ultra HD or UHD instead.
  • The higher pixel density of a 4K panel also enable you get much closer without the grid-like structure of the image itself becoming visible –this means you can comfortably watch a much larger screen from the same seating position as your current Full HD panel. Currently all available 4K Ultra HD TVs are in excess of 50-inches.

Indeed, the TV's resolution is one of the most important aspects that defines its picture quality, but it is highly dependent on the quality of the content you are watching as well as the position you are watching it from. So, Friends, If you are not very technical, it is very likely that you are confused by so many technicalities. Hopefully this thread has managed to help in your understanding of the most important characteristics of a display: aspect ratio, resolutions or type. Let me know your views though the comment box below. See you again with one more interesting topic. Take care!

Sources : 1 , 2
Thread credit goes to Sam_crazy

2018-03-09 15:57:16
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Sea Rider | from Redmi Note 4


informative thread...
2018-03-10 00:51:20

Advanced Bunny

Kiran Chand P | from Redmi Note 4


Have some info....
2018-03-11 12:07:40
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