What is a high refresh rate? Frame rate? (Phone, TV, monitor)


Many of us Favorite tv And today’s displays have high refresh rate displays, which can ensure smoother screen actions and clearer pictures.Newest iPhone 13 Pro models It can reach a refresh rate of 120Hz, as do several mobile phones running Google’s Android operating system.

High refresh rates are also often talked about in games, where fast response and instant screen updates may mean the difference between victory and defeat.

What is the refresh rate?

All the content on the display consists of a single still frame (photo) displayed one after another at a very high speed. The refresh rate is in Hertz (Hz), which determines the frequency of frame changes. The 120 Hz refresh rate allows up to 120 new frames to be displayed per second. A 60Hz monitor can only refresh the screen 60 times per second. You can guess how many times the 90Hz screen can be refreshed.

What about the frame rate?

It should be noted that the potential benefits of a high screen refresh rate are limited by the frame rate of any content on the screen. For video or video game graphics, this is expressed as frames per second (fps). Movies usually run at 24 frames per second, because this is a cinema standard, and many games run at up to 120 fps.

Touch response rate?

Just to make you more confused, manufacturers sometimes list the touch response rate (or touch sampling rate) of touch screen displays, also in hertz. This number is related to how often the touch screen scans finger touches. The higher the touch response rate, the faster it will respond to your touch.

How the refresh rate affects your phone

A higher refresh rate allows the phone’s display to keep up with game action and reduce motion blur in the video, but it can also make navigating around the interface feel more sensitive than on a display with a lower refresh rate. In the frenetic action, the game looks less intermittent, the video clips of the fast-paced sports action look smoother, and any jitter of scrolling long web pages is reduced. To get the full benefits of a high refresh rate, you also need a high frame rate, and ideally, the two match.

Google via Simon Hill

The cost is usually your battery life. Refreshing the image on the display more times per second requires more battery power. It also requires processing power to run graphics at a higher frame rate. The processor has been greatly improved, but the battery life of smartphones is still limited. For this reason, most mobile phones with high refresh rates will not run at the highest frequency all the time.This includes some New iPhone Pro 13 models, It has an “adaptive” 120Hz refresh rate, and when you are more likely to notice a difference, it will scale up at a specific time.

Higher refresh rates first appeared on gaming-centric smartphones Razer Phone, But manufacturers such as Samsung, OnePlus, and Google have adopted them in their flagship devices, such as Galaxy S21 series with Pixel 5.

Razer Phone 2 focuses on gaming and has a fast refresh rate.

Razer

What about TVs and monitors?

The benefits of a high refresh rate on a TV or monitor are very similar to those of a smartphone. The motion on the screen should look smoother and the image should look clearer. Here, the frame rate of the content is also very important. Sometimes the frame rate does not match the refresh rate, which can make TV shows and movies look worse.

“Soap Opera Effect” Explanation

Some TVs and monitors handle the difference between frame rate and refresh rate better than others. Many people simply lower the refresh rate to match the frame rate, but monitors with a fixed refresh rate must find other ways to deal with this difference.

For example, when a movie runs at 24 frames per second but has a high refresh rate, the TV may insert extra frames to fill in the gaps. When the refresh rate is divisible by the frame rate, this may be relatively simple, because the TV can display multiples of the same frame. For example, a 120-Hz refresh rate for displaying 24-fps content can display five times per frame. However, with a 60-Hz refresh rate and 24-fps material, you will end up displaying an uneven number of frames, which may cause trembling and shaking effects for some viewers.



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