Xiao Zhen is from The Temple of Oufei
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Friend, are you like me, waiting a year and a half for Apex Heroes to launch PS5?
Is that like me, when I heard the PS5 version of Apex Heroes was exposed at the beginning of the year, I couldn't wait to buy a 4k 120Hz TV and PS5 device?
So, you must have heard the big news that Apex Heroes really launched PS5 not long ago:
Emm...... After seeing this push, I was stunned on the spot.
What is it? Up to 4k 60Hz??
Even "Rainbow Six Siege", which launched PS5 a year ago, has launched a 4k 120Hz version, and you "Apex Heroes" have been rubbing for a year and a half to get me this?
Now "Apex Heroes" is officially a scolding, and the anger of the juicers can be felt across the screen (doge):
To be honest, my first reaction at that time was: finished, 4k 120Hz TV white bought.
You know, during this time, almost all of my off-work time was used (in the in-depth forums to post passionately) to study the screen display technology in the TV industry, and even nibbled on a lot of concepts.
Aside from Apex Heroes (there is also a color 6 anyway), the water of the 4k 120Hz TV industry is indeed quite deep.
What exactly is the 4k 120Hz standard?
It is understood that 4k 120Hz is currently the "top matching" standard for the industry's screen display.
As of March 2022, the real 4k 240Hz screen display has not yet been listed. Computer screens do have "240Hz," but it's more of a gimmick.
For the 4k 120Hz standard, there are also strict requirements, which must be the screen body, chip, and input that meet the 4k 120Hz at the same time:
Screen: The screen body refresh rate reaches 4k 120Hz (4K has several standards, the most common TV resolution is 3840×2160) chip: the chip supports 4k 120Hz decoding input: full blood VERSION HDMI 2.1 interface (supports up to 48Gbps information transmission, that is, 48GB per second)
If any one of these conditions is not met, the final screen will not be able to reach 4k 120Hz, analogous to the "barrel effect":
Of course, the above 3 conditions are still the "hard conditions" of the TV itself.
In addition, the movies you play on TV and the games you play also need to support 4k 120Hz.
Taking the game as an example, if your graphics card can't move while running the game, and can only output up to 4k 30fps, you can still feel obvious stuttering even when playing on TV.
For shooters, the frame rate directly affects the feel of the game. When fighting guns, if your display can only output up to 60Hz, and the other party is 120Hz, in the case of the same technology between the two of you, the other party is more dominant than you (packet transmission is faster).
One Apex Heroes player described the feeling as "like a foot stuck in sticky honey."
The same is true of movies, like Will Smith's "Twin Killers", which currently supports 4k 120Hz, and it is indeed "every hair can be seen clearly" when played.
However, a low frame rate can be thought of. There are now some TVs that can increase the frame rate to 120Hz through MEMC motion compensation technology, reducing the sense of stuttering caused by the picture.
In addition to MEMC, VRR (Adaptive Display Refresh Rate) technology will also force the screen display to be synchronized with the game frame rate to avoid the problem of torn screens.
In short, 4k 120Hz changes not only the visual effect, but also improves the feel of the game operation, and even increases the effect ceiling of the original technology (so that meMC can be plugged in up to 120Hz, VRR has a place).
But what I didn't expect was that when I identified a 4k 120Hz TV, I almost "planted" it in the routine of the TV manufacturer.
TV manufacturers routine your "marketing black talk"
In fact, not all TVs that advertise "4k 120Hz" really meet the three-point hardware requirements: the screen body, chip, and input simultaneously reach the 4k 120Hz standard.
The first layer of routines is often a screen that flaunts various latest technologies.
In the case that the screen body is only 4k 60Hz, some manufacturers will forcibly increase the screen to close to 4k 120Hz through technologies such as black frame, DLG and HSR.
First, it is to use the black frame technology to achieve a similar effect of 120Hz on the 60Hz screen.
Specifically, black frames do not require the TV's screen, chip or transmission line to reach the 120Hz standard, but use the technology of backlight flickering to insert a frame of almost complete darkness between the two frames.
It sounds a bit incredible, but this technology actually takes advantage of the visual persistence effect of our human eyes.
The reason why there is a sense of blurriness is because our eyes retain part of the previous frame when receiving the next frame:
If you add a black frame to the two frames, you can eliminate this visual persistence effect.
Previously, black frame insertion had an obvious flaw that would reduce the brightness of the picture. But at present, manufacturers such as Sony and LG are also exploring ways to achieve the effect of inserting black frames without reducing the brightness, such as inserting only part of the picture.
Second, DLG and HSR technology are also two very popular techniques to improve the frame rate of television.
Before popularizing these two technologies, we need to briefly understand how the pictures we usually see "appear".
When our graphics cards are calculated on a screen, they are often calculated from top to bottom, from left to right, line by line.
The speed unit of the graphics card calculating the picture is the frame rate (fps), and the speed at which the TV renders the picture is the refresh rate (Hz).
So, in order to forcibly improve the picture effect within the limited refresh time, try to crammed part of the picture information of the next frame in the limited number of refreshes to make it look smoother, what should the computer do?
DLG technology selects "exchanging space for time information", forcibly sweeping every two lines of the picture together, reducing the amount of screen calculation by half and increasing the number of scans.
As can be seen from the figure, the 4 lines displayed normally are directly "reduced" by the DLG into two large rows of data, of which 1 and 2 lines are the same as 3 and 4 lines, so that you can save some time to come out and scan again:
HSR technology is even more elaborate, not directly merging every two rows into a row of scanning, but on an even number of rows, half the time to display the previous row of data, half the time to display the next row of data, for example, the second row shows 1 + 3 rows of data:
Such a technical cost is higher than DLG, the effect is better than DLG, the current "multiplier refresh technology" promoted by some manufacturers is the use of HSR technology, but still not as clear as the normal 4k 120Hz picture.
When a normal 4k 120Hz screen is refreshed, there is no need to worry about the loss of resolution.
In fact, the 4k 240Hz screen is also through the insertion of black frame, DLG and HSR technology, to achieve a 4k 120Hz screen display, to achieve a close to 240Hz effect, but essentially still use the 120Hz screen body.
The second layer of routine is the situation where the chip is disguised as 4k 120Hz.
For example, some digital enthusiasts found in the evaluation that although the TV chip of a large factory is marked with 4k 120Hz, in actual use, the frame will automatically drop to 60Hz when playing the film source.
If you can't identify such chips when purchasing, you can go to testufo and other test sites in advance, or search the forum for whether there are netizens to break the thunder, in order to avoid such products.
The third layer of the routine also depends on whether the transmission interface is a full-blood version of HDMI 2.1.
It is worth noting that in the latest HDMI specification, the original HDMI 2.0 specification was cancelled, and some products that are actually HDMI 2.0 are no longer marked with HDMI 2.0 standards, but enter the category of HDMI 2.1.
That is to say, all the functions of HDMI 2.0 have become a subset of the HDMI 2.1 specification, and all are listed as "selective features", including FRL, higher bandwidth, VRR, ALLM, etc.
So now there is a batch of data lines that identify HDMI 2.1, but the actual transmission speed cannot reach 48Gbps, which is not a "full-blood version of HDMI 2.1 interface". Only the full-blood version of HDMI 2.1 interface can support the transmission of data volumes such as 4k 120Hz and 8K 60Hz.
The technology is not wrong, but some manufacturers play the edge of the technology to do marketing packaging, and do not clearly inform consumers, which is very undesirable.
4k 120Hz TV, is it really "bought for free"?
Then again, I finally thought about whether a 4K 120Hz TV was a free bet.
If you really want to count, you don't have.
On the one hand, there are already some good quality movies and variety shows to watch, and in some of the games on the line, there are also some that feel good.
Including games such as "Rainbow Six Siege", in fact, the 4k 120Hz version has long been launched on the PS5.
On the other hand, 4k 120Hz is also really one of the trends of the future.
For example, although "Apex Heroes" only launched a 4k 60Hz version this time, the official also said in the file that when the next version is updated, they will launch a 4k 120Hz version.
Some netizens joked that if after the launch of the 4k 120Hz version, they found that they still could not beat their opponents, then they could only uninstall (manual dog head).
So, did you get a 4k 120Hz TV like me? How's it going to be?