研究合适的设备可能是一项艰巨的任务，尤其是当您被全高清^{(Full HD)}、高清就绪、4K超高清^{(Ultra HD)}等术语轰炸时。这些字母是什么意思？如果您不知道，请不要担心！本文将向您解释什么是全高清以及^{(Full HD)}HD ^(F)Ready^{(HD Ready)}和全高清分辨率^{(ull HD resolution)}之间的区别。

FHD vs HD 解释

什么是高清

高清^(HD)或高清^{(High Definition)}，图像分辨率的新黄金标准经常与“全高清”互换使用来描述产品的图像分辨率——但它只会导致混淆。让我们尝试清除这一点。高清的概念完全改变了我们对屏幕的期望的视觉细节和清晰度水平。

什么是全高清

全高清^{(Full HD)}是用于表示电视屏幕分辨率的术语。它基本上意味着分辨率为 1920 x 1080 像素的图像。像素数的测量是通过估计高度和宽度来完成的。因此，如果像电视这样的显示单元具有 1920 x 1080p 分辨率，则意味着它的高度为 1080 像素，宽度为 1920 像素，此分辨率可以承载的像素总数为 1920 x 1080 = 2073600 像素。像素数越多，画质越好，因为像素数共同构成电视上的画面。这种分辨率常见于宽屏电视^(TVs)或纵横比为 16:9 的显示器。

什么是超高清

在频谱的高端，有超高清^{(Ultra HD)}（UHD或 4K）。这种图像分辨率甚至比 1080p 更大、更清晰、更清晰。然而，超高清^{(Ultra HD)}图像分辨率尚未被普遍采用。为什么？虽然在技术术语中“4K”是指包含 4096 个像素的像素的水平分辨率，但没有为其指定垂直分辨率。因此，超高清^{(Ultra HD)}电视在技术上不是 4K。

阅读^(Read)：4K 对比 HDR 对比杜比视界^{(4K vs HDR vs Dolby Vision)}。

HD Ready和Full HD分辨率之间的区别

HD Ready分辨率和Full HD 分辨率^{(Full HD Resolution)}之间的主要区别是指实际图像大小。高清可能指 720p 或 1080p，但全高清^{(Full HD)}只能指 1080p。另一方面，HD Ready一词仅指 720p。因此，当术语“ HD Ready ”用于描述电视或显示器/笔记本电脑/PC 时，它意味着该设备的图像分辨率为 720p。也可以使用术语“HD”。因此，HD Ready图像分辨率将包含沿垂直轴的 720 行像素和沿水平轴的 1,280 行像素，从而使图像的高度为 720 像素，宽度为 1,280 像素。

这将导致总像素数为 921,600，这是可被视为高清的最低图像分辨率。

另一方面，全高清^{(Full HD)}分辨率意味着 1080p 高（高）和 1920 像素宽。这导致总像素数约为 200 万总像素。

图像中的像素越多越好，因为每个区域中的更多像素将允许图像包含很少或不包含可见像素（称为视网膜显示），从而实现更清晰的视觉细​​节和清晰度。在视网膜显示器中，特定区域中的像素比人眼单独看到的要多。

What is Full HD - Difference between HD Ready and Full HD resolution

Researching the right device can be quite a task, еspecially when you are bombarded with terms like Full HD, HD ready, 4K Ultra HD and more. What do these letters mean? If you аre not aware, dоn’t worry! This article will explain to you what is Full HD and the difference between HD Ready and Full HD resolution.

FHD vs HD explained

What is HD

HD or High Definition, the new gold standard for image resolution is often being used interchangeably with ‘Full HD’ to describe a product’s image resolution- but it has only led to confusion. Let’s attempt to clear this. The concept of HD has completely changed the level of visual detail and clarity we’ve come to expect from our screens.

What is Full HD

Full HD is a term used to denote the resolution of the TV screen. It basically means an image with a resolution of 1920 by 1080 pixels. The measurement of the number of pixels is done by estimating the height and width. So, if a display unit like a TV holds 1920 x 1080p resolution then, it means its height is 1080 pixels and the width is 1920 pixels and the total number of pixels this resolution can carry is 1920 x 1080 = 2073600 pixels. The more the number of pixels, the better picture quality is as the number of pixels together compose a picture on the TV. This resolution is commonly seen in widescreen TVs or monitors with an aspect ratio of 16:9.

What is Ultra HD

On the upper end of the spectrum, there is Ultra HD (UHD or 4K). This image resolution is larger, crisper, and clearer than even 1080p. However, the Ultra HD image resolution hasn’t yet been universally adopted. Why? Although in technical terms “4K” means a horizontal resolution of pixels containing 4096 pixels, there’s no vertical resolution specified for it. So, Ultra HD TV’s are not technically 4K.

Read: 4K vs HDR vs Dolby Vision.

Difference between HD Ready and Full HD resolution

The primarily difference between HD Ready resolution and Full HD Resolution refers to the actual image size. HD may refer to 720p or 1080p, but Full HD can only refer to 1080p. On the other hand, the phrase HD Ready refers to just 720p. So, when the term ‘HD Ready’ is used to describe a television or monitor/laptop/PC, it means the device has an image resolution of 720p. The term ‘HD’ may also be used. As such, HD Ready image resolution will contain 720 lines of pixels along the vertical axis, and 1,280 lines of pixels along the horizontal axis thereby making the image is 720 pixels tall and 1,280 pixels wide.

This will results in a total pixel count of 921,600, the lowest image resolution that can be considered as high definition.

On the other hand, Full HD resolution means 1080p tall (height) and 1920 pixels wide. This results in a total pixel count of approximately 2 million total pixels.

The more pixels there are in an image, the better because more pixels in each area will allow for an image to contain little to no visible pixels (known as a retina display) allowing sharper visual detail and clarity. In a retina display, there are more pixels in a specific area than can be individually seen by the human eye.

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