Refresh rates confuse you when the manufacturers fail to convince the viewers. Here is an article that explains TV refresh rates in detail. Here is also an explanation for 60 Hz vs 120 Hz.
Therefore, without any further delay, read the article to understand the concept of refresh rate.
What Does a TV Refresh Rate Mean?
A TV refresh rate is the measure of the times the TV redraws the image on the screen within a second. It determines the number of times the image gets refreshed on the screen per screen. It is measured in Hertz (Hz).
Generally, most TVs come with a refresh rate of 60 Hz. However, the manufacturers do not list such numbers on TV.
There are manufacturers who make use of various technologies like black frame insertions. Thus, they claim a higher number of refresh rates. However, maximum times they do not justify the claims, but at times they do.
Concept of Motion Interpolation
Interpolation is adding frames to the video source before the image gets displayed. It calls for creating additional frames. It is done by guessing the movements between two frames.
If done properly and efficiently, it enhances the motion to look smoother. Thus, it is ideal for fast-moving sports and action scenes.
Note that, at times, it creates an unnatural image. However, it can be helpful to watch TV. In the case of gaming, it is difficult as a lag gets introduced.
The Concept of Black Frame Insertion
As mentioned earlier, the manufacturers use this to improve the refresh rates. There is a trick here. Between each video frame, it turns the screen black. Thus, it fools your eyes into watching a smoother motion. Note that this technique works due to motion blur.
The Concept of Motion Blur
Motion blur is a phenomenon that affects your experience of TV viewing. People generally tend to confuse this with refresh rates. However, the fact is that motion blur has nothing to do with refresh rates.
Basically, it occurs when there is a quick movement on the screen (especially in sports), the image gets blurred.
It can occur due to many reasons. One can be TV panels. Some TVs switch between the panels at quicker rates. You generally observe this in LCD and LED TVs. The OLED is ideal in such a scenario.
Note: You can refer to our article “LED vs OLED – What are the differences?” for more information.
Motion blur can also be a result of sample and hold techniques that are used in TV. Here the TV screens hold the pixels for a more prolonged moment. Thus, when the picture moves quickly, it is seen blurred, and you experience motion blur.
Shooting video at a very low shutter speed leads to motion blur.
As motion blur can be very irritating, black frame insertion or motion interpolation can remove it.
Frame Rate vs Refresh Rate
Generally, people confuse frame rates or frame per second with TV refresh rates. They think it to be all the same. However, it is not the case. These two influence each other but are different.
Here is a chart that highlights the possible differences between the two.
|Differences on||Frame rate||Refresh rate|
|Measured in||It is measured in Frame Per Second (FPS).||It is measured in Hertz (Hz).|
|Merits||It reduces choppiness at the time of watching fast-paced movies. Or at the time of playing video games. Moreover, FPS determines the level of smoothness when the picture gets displayed on the screen.||A higher refresh rate improves motion blurring.|
|Demerits||Generally, the movies are shot in 3 FPS. Or they are shot even lower than that. Hence, the frame rate of 60 FPS is of no use.||The refresh rates are not noticeable at the maximum time.|
60 Hz Vs 120 Hz
As we know, the broadcast content is generally a maximum of 60 FPS. Thus, with a refresh rate of 60 FPS, the content looks perfect.
If this frame needs to get displayed on 120 Hz TV, then each frame needs to be repeated twice. That is (60 fps x 2 =) 120 fps.
Thus, if you are having 30p video content, the TV needs to repeat the content four times. That is 30 fps x 4= 120 fps.
Nowadays, TVs are able to switch from 120 Hz refresh rates to 60 Hz. However, only if video input is 60 fps. Hence, it is nearly equal to a 60 Hz TV.
Thus, does it indicate that it is not worth buying a TV with a 120 Hz refresh rate? The answer to this question is NO. It is because nowadays, there are video contents with higher refresh rates.
Merits of 120 Hz TV
Here are the benefits of a 120 Hz TV. Therefore, read them to understand them better.
The Ideal Refresh Rates For a TV
It is said and believed that 120 Hz frames per second are better than that of the 60 Hz frames per second as the ideal refresh rates.
Theoretically, 120 Hz refers that the image will get displayed double the times than the refresh rate of 60 Hz.
Moreover, based on research, a 120 Hz TV frequency doesn’t indicate that the motion blur will be less than 60 Hz. Therefore, a normal 60 Hz rate is good for TVs. Also, the refresh rates depend on the TVs content type.
For playing games on your TV or watching movies ( high and fast-paced ones) it is better to go for 120 Hz TV. with it, you can enjoy a better picture quality.
On the other hand, if you are not doing the above things, then 60 Hz is all good. It will also allow you to stay within your budget and save money.
Different Refresh Rates from Various Sources
|Different brands||Refresh rates|
|LG- Tru Motion||Tru Motion 240 (120Hz refresh rate)Tru Motion 120 (60Hz refresh rate)|
|Sony- Slow Motion XR||For older motions: Slow Motion XR 240 refers to a 60 Hz refresh rate. ( native).Motion Flow XR- 14440 refers to a 120 Hz refresh rate. (native).|
|Toshiba- Clear Frame||There is a 120 Hz refresh rate in high-end TVs.|
|Samsung- Motion Rate||Samsung uses this for its 4K TVs. This is two times the native refresh rates. Thus, a 240 motion rate is a good refresh rate of 120 Hz.|
|TCL- Clear Motion Index||It has a 60 Hz refresh rate, however, except for the high priced models.|
Tips to Get The Best Results
To get the best results, here are some tips and hacks. You just need to tweak some settings. The chart below guides you.
|Sony TV||Go to the Menu settings. Next, go to the Picture & Display. Look for Picture Adjustment Change the Motion Flow setting to True Cinema. Moreover, do not forget to set the Cinemotion setting to high.|
|LG TV||Go to Menu settings Look for the picture Go to the picture mode settings Now, turn the Real Cinema setting ON.|
|Samsung TV||Go to the Menu settings: Go to the picture options, Now, enable the Film Mode|
|Other TVs||Look for the settings. Go to Auto-Motion Plus, Change it to Custom. Just move both the sliders toward 0.|
Thus, with these settings, you can enjoy a shake-free image.
Thus, the article ends guiding you with the proper idea of refresh rates. We hope to guide you well. For any queries about the refresh rates, drop them in the comment box. We would try to assist you.
Shirsendu Roy Co-Founder and Chief Technology Officer (CTO) of REVIEWCIRCLES. He is Bachelor of Computer Science has experience of 7+ years in Web Development, Technology Blogging, Review Video Production. His passion for solving problems shifted him to consumer electronics sector and led to form this platform to influence consumer to take proper purchasing decision.