电视和电话等消费电子产品通常以新技术流行语进行销售，这些流行语很容易贴在盒子外面。这(Which)就是为什么您会在营销材料上 看到带有“ 4K ”、“ HDR ”和其他技术声音的图标的原因。(HDR)
现在，“ 120Hz ”已加入这两种产品类型的可销售功能列表。这是什么意思？“120Hz TV”指的是电视屏幕的“刷新率”，这里需要稍微解释一下。
“刷新率”是什么意思？
刷新率描述了您的屏幕多久可以完全更新它正在显示的图像。所以一个 120Hz 的电视屏幕每秒可以显示 120 个独特的新鲜图像！这是一个简单的概念，但它对图像的外观有重大影响。
刷新率与您正在查看的内容的“帧率”有关。也就是说，视频持续时间的每一秒有多少个独特的静止帧。每秒帧数越多，运动就会显得越平滑。如果内容的帧速率高于屏幕的刷新率，那么您将无法从额外的运动细节中看到任何好处。
刷新率对比 解析度
谈到现代屏幕，您可能已经熟悉“分辨率”的概念。这是构成图片的“像素”的数量。分辨率越高，图像中的细节越精细。这假设您正在显示的图像包含足够的细节以匹配屏幕能够显示的内容！
刷新率有点像分辨率。事实上，它有时被称为“时间”分辨率。它是可以随时间显示的运动细节的数量，而不是可以在单个帧中显示的细节总量。
120Hz 显示器不必是特定的分辨率。对于 120Hz 电视，大多数设备将提供 4K 图像分辨率，但您可能会发现在较低分辨率下提供该刷新率的示例。所以请记住分别评估这两个功能。
确保电视上的连接选项以您想要的分辨率支持 120Hz 也很重要。带有HDMI 2.1 连接器的电视能够在 4K 分辨率下达到 120Hz。低于此值的任何内容均不正式支持此分辨率和刷新率组合。
为什么 120Hz 对电视很重要
如今，几乎家中和货架上的每台电视都支持至少 60Hz 的频率。目前，您在YouTube(YouTube)等平台上找不到任何以更高刷新率运行的视频内容。对于电影内容，每秒 24 帧是常态，偶尔会有更高速率的实验，例如以每秒 48 帧提供的霍比特人电影。(Hobbit)大部分电视内容为每秒 30 帧。因此，如您所见，在 60Hz 以上几乎没有什么可看的。
当我们切换到电脑或游戏机时，情况就大不相同了。最新一代的游戏机能够输出 120Hz 的帧速率，具体取决于游戏名称。因此，在能够以这些速度运行的游戏中，您将体验到令人难以置信的流畅度和响应能力。
为什么 120Hz 对手机和平板电脑很重要
虽然电视上 120Hz 的情况都是关于终极流动性的，但手机和平板电脑上还有一个额外的维度。那是因为在智能手机上，屏幕不仅仅是你看的东西。这是一个触觉界面。
120Hz 屏幕的流动性改善了使用触摸界面的感觉。通常，此类手机上的触摸检测也设置为以 120Hz 对您的触摸输入进行采样，这使手机使用起来感觉灵敏且直观。很多用过 120Hz 智能手机的人都觉得 60Hz 接口现在感觉迟钝，不管内部处理器有多快。
然而，120Hz 手机确实需要权衡取舍。通常，手机必须以略低于其屏幕能力的分辨率运行，从而导致图像的清晰度略低。120Hz 手机也更耗电，尽管它们确实提供了省电选项，例如在省电模式下降低刷新率。
要考虑的其他显示功能
屏幕的刷新率只是影响整体图像质量的因素之一。正如我们之前提到的，在某些情况下 120Hz 模式需要降低图像分辨率。与具有这些功能的 60Hz 型号相比，缺少HDR或良好黑电平等功能的 120Hz 电视可能是更糟糕的整体选择。(HDR)
因此，您永远不应该让“120Hz”之类的单一营销数字以某种方式左右您。相反(Rather)，从整体上看待设备，并根据您实际要消费的内容和您拥有的用例来考虑它。
注意“假”120Hz 电视！
许多电视(TVs)列出了 120Hz 或其他一些高刷新率的“有效”速率。然而，这些电视(TVs)实际上所做的是使用诸如黑帧插入或帧插值之类的技术来使运动看起来更流畅。
但是，您实际上并没有看到每秒超过 60 帧的视频，因为假帧不包含新信息。如果您想要真正的交易，请始终(Always)寻找原生 120Hz（或更高）刷新率！
120Hz 适合你吗？
在这里，我们达到了底线。您是否应该将当前的电视或手机升级为 120Hz 显示屏？
在等式的电视方面，唯一真正应该考虑在短期内跳到 120Hz 的人是游戏玩家。新的PlayStation 5和Xbox Series S和 X 游戏机可以提供高达每秒 120 帧的游戏内容。这是一个重大的升级。如果你有一台功能强大的游戏 PC，那么有些显示器支持高达 240Hz，因为显卡可以以高于 120 的帧速率输出。
如果您正在考虑购买这些新游戏机之一，那么值得购买具有 4K 功能的 120Hz 电视。对于其他内容类型，一点也不着急。事实上，当谈到电影和电视节目时，大多数人都不喜欢高帧率视频的外观。
谈到 120Hz 手机，游戏也得到了不错的提升。假设有问题的手机可以以这些速度运行游戏。然而，120Hz 的真正价值在于触觉用户体验。120Hz 的移动设备感觉更加活泼和反应灵敏。这是一场可用性革命，几乎任何人都会欣赏。虽然这不是立即抛弃当前智能手机的理由，但大多数人购买手机的更换周期比电视短得多。
我们的建议是在那个时候寻找提供 120Hz 输入和显示的手机。响应能力和手感的主观改进是如此显着，以至于我们可以很自在地说 120Hz 显示屏对于未来的手机和平板电脑来说应该是最低要求。
120Hz TVs and Phones Are Here: Do You Need It?
Cоnsυmer electronіcs such as TVs and phonеs are often marketed with new technology buzzwоrds that are easy to stіck on the оutside of the box. Which is why you see iсonѕ with terms likе “4K”, “HDR” and other technology soundbites emblazoned on the marketing materials.
Now “120Hz” has joined the list of marketable features for both of these product types. What does this mean? A “120Hz TV” refers to the “refresh rate” of the TV screen, which needs just a little explanation.
What Does “Refresh Rate” Mean?
The refresh rate describes how often your screen can completely update the image it’s displaying. So a 120Hz TV screen can display 120 unique fresh images every second! It’s a simple concept, but it has a significant impact on what the image looks like.
Refresh rate is related to the “frame rate” of the content you’re viewing. That is, how many unique still frames for every second of the video’s duration. The more frames there are each second, the smoother the motion will appear. If the content has a frame rate higher than the refresh rate of the screen, then you’ll see no benefit from the extra motion detail.
Refresh Rate Vs. Resolution
You’re probably already familiar with the concept of “resolution” when it comes to modern screens. This is the number of “pixels” that make up the picture. The higher the resolution, the finer the detail in the image. This assumes you’re displaying an image that contains enough detail to match what the screen is capable of displaying!
The refresh rate is somewhat like resolution. In fact, it’s sometimes referred to as “temporal” resolution. It’s the amount of motion detail that can be displayed over time, as opposed to the total amount of detail that can be shown in a single frame.
120Hz displays do not have to be a particular resolution. For 120Hz TVs, most units are going to offer a 4K image resolution, but you might find examples that offer that refresh rate at lower resolutions. So remember to assess these two features separately.
It’s also important to ensure that the connection options on your TV support 120Hz at the resolution you desire. A TV with an HDMI 2.1 connector is capable of 120Hz at 4K resolutions. Anything lower than this does not officially support this resolution and refresh rate combination.
Why 120Hz Matters for TVs
Just about every TV in homes and on shelves today supports a minimum of 60Hz. Right now, you won’t find any video content on platforms like YouTube that runs at a higher refresh rate. For cinematic content, 24 frames per second is the norm, with the occasional experiment at higher rates, such as the Hobbit films which were offered at 48 frames per second. Much of television content is at 30 frames per second. So, as you can see, there’s little if anything to watch above 60Hz.
Things are very different when we switch to computers or gaming consoles. The latest generation of gaming consoles are capable of outputting frame rates at 120Hz, depending on the title. So in titles that can run at those speeds, you’ll experience incredible smoothness and responsiveness.
Why 120Hz Matters for Phones and Tablets
While the case for 120Hz on a TV is all about ultimate fluidity, there’s an added dimension on phones and tablets. That’s because on a smartphone the screen is not only something you look at. It’s a tactile interface.
A 120Hz screen’s fluidity improves the feel of using a touch interface. Usually the touch detection on such phones is also set to sample your touch input at 120Hz, which makes the phone feel snappy and intuitive to use. Many people who have used 120Hz smartphones feel that 60Hz interfaces now feel sluggish, regardless of how fast the internal processors are.
120Hz phones do have trade offs however. Usually the phone has to run at a slightly lower resolution than its screen is capable of, resulting in a slightly less sharp image. 120Hz phones are also more power hungry, though they do offer power saving options, such as lowering the refresh rate in battery saving mode.
Other Display Features to Consider
The refresh rate of a screen is just one component that affects overall image quality. As we mentioned before, in some cases 120Hz mode requires dropping your image resolution. A 120Hz TV that lacks features such as HDR or good black levels may be a worse overall choice than a 60Hz model that does have these features.
So you should never let a single marketing number such as “120Hz” sway you one way or another. Rather, look at the device holistically and consider it in relation to the content you’re actually going to consume and the use cases you have for it.
Be Aware of “Fake” 120Hz TVs!
Many TVs list an “effective” rate of 120Hz or some other high refresh rate. However, what these TVs actually do is use a technique such as black frame insertion or frame interpolation to make motion look smoother.
However, you aren’t actually seeing more than 60 frames of video per second, since the fake frames don’t contain new information. Always look for a native 120Hz (or higher) refresh rate if you want the real deal!
Is 120Hz For You?
Here we get to the bottom line. Should you upgrade your current TV or phone to one with a 120Hz display?
On the TV side of the equation, the only people who should really consider the jump to 120Hz in the short term are gamers. The new PlayStation 5 and Xbox Series S and X consoles can offer gaming content at up to 120 frames per second. This is a significant upgrade. If you have a powerful gaming PC, there are monitors that support up to 240Hz as a graphics card can output at a frame rate higher than 120.
If you’re thinking about getting one of these new consoles, it’s worth purchasing a 120Hz TV with 4K capability. For other content types, there’s no rush at all. In fact, most people don’t like the look of high frame rate video when it comes to movies and TV shows.
When it comes to 120Hz phones, games also get a nice improvement. Assuming the phone in question can run the game at those speeds. However, the true value of 120Hz comes in the tactile user experience. 120Hz mobile devices feel dramatically more snappy and reactive. It’s a usability revolution that just about anyone will appreciate. While it’s not a reason to immediately dump your current smartphone, most people buy phones on a much shorter replacement cycle than televisions.
Our recommendation for when that time comes is to look for a handset that offers 120Hz input and display. The subjective improvement in responsiveness and feel is so dramatic, that we’re comfortable in saying that a 120Hz display should be a minimum for phones and tablets moving forward.
