This article is from WeChat official account:APPSO (ID: appsolution), author: Du Yuan best man, from head Figure: vision China
It is easy to change from simple to extravagant, but difficult to change from extravagant to simple. This principle still applies in the field of consumer electronics.
The screen technology of smartphones has undergone innovations in multiple dimensions such as resolution, material, and refresh rate. In the past, we thought that the screen resolution and refresh rate were enough. After all, it is difficult to distinguish the difference between them, such as the difference between 90 points and 95 points.
But the human eye is highly adaptable. To bring a better experience, screen technology must continue to move forward. Nowadays, the screen can be said to be the most important indicator for judging the performance of smartphones. It is said that the eyes are the windows of the soul. For the smartphone, the screen can also be said to be a window, and it is also a floor-to-ceiling window that can enhance the interactive experience.
Since the OnePlus 7 Pro led the high refresh rate screen in 2019, nowadays, from flagship phones to thousands of yuan phones, all are equipped with high refresh rate screens. On the other hand, the iPhone in the iOS world still sticks to the 60Hz screen, meditation and Buddhism.
As a former iPhone user, I had a very Buddhist mentality before I touched the high-swipe screen. I boast that 60Hz is sufficient, and with the creamy transition of iOS, it can be comparable to 90Hz. But until one day, I used the Android high-brush flagship, and everything changed.
Under the high refresh rate screen, I can feel the real silky smoothness. When I use the iPhone again, iOS behaves like a friend who is awkward with you all the time, and a jerky and lagging feeling arises spontaneously. At this time, I stopped meditation and joined the team denouncing that the iPhone would no longer be bought without having to swipe the screen.
Since its development, to be honest, the iPhone is no longer a rival of several other Android phones. The gap between them is constantly narrowing, and it has even been surpassed in some features. A high refresh rate screen is one.
the optimal solution for high refreshing
As we all know, Apple’s products are not the first to “eat crabs” in the industry, such as Touch ID, dual-camera, facial recognition, and OLED screens. But once Apple launches mass-produced products, its hardware standards and software tuning will be the industry leader. For high refresh rate screens, Apple should be looking for the current “optimal solution.”
This optimal solution has actually appeared in Apple products, and there is also a corresponding mass-produced product in the Android camp, which is the LTPO OLED screen (hereinafter referred to as LTPO).
The full name of LTPO technology is Low Temperature Polycrystalline Oxide, which is translated as “Low Temperature Polycrystalline Oxide” in Chinese. What it is called and how it is formed is actually not important to us consumers. After all, reading and recitation does not necessarily score points in the exam.
Apple Watch Series 5 supports always display
The biggest advantage of LTPO technology is that it supports adaptive adjustment of the refresh rate of the OLED screen,Obviously, there is a perceptual change. But on the first day, I paid special attention to the battery life. After the upgrade, the battery life of Find X3 Pro was significantly improved. The same way of use, after 24 hours, there will still be about 45% of the battery.(usually about 20%), if you concentrate on your work, you should be able to stay out of get off work.
In addition, in order to save power, the high frame rate mode of Find X3 Pro has intelligent dynamic frame rate adjustment. The use of these days has also made me feel some ways and some problems.
“Smart dynamic frame rate” is mostly divided according to application scenarios. For example, when staying on the desktop and the browser, there will be an ultra-low refresh rate of 1Hz. When watching video apps such as station B and oil pipes, The frame rate may be adjusted to 24Hz, 30Hz, in different games, it will come to 60Hz, 90Hz and 120Hz.
Switching to station B will have a significant frame rate change. (The display screen frame rate in the developer options is actually not accurate on the LTPO screen. It just shows the current highest refresh rate, but it is enough to explain the problem)
In reality, Find X3 Pro’s “frequency conversion” strategy is a little bit “crude”. The most obvious is to switch to the video application(Station B, oil pipe,”img-center-box”>
Actually, on mobile devices such as smartphones, Qualcomm introduced Q-Sync with reference to the concept of Free-Sync. The mechanism of action between them is very similar. They are all rendered according to each frame. The time is different, and the time of each frame synthesis is dynamically adjusted.
However, before the LTPO technology screen supports stepless frequency conversion screens, Qualcomm’s Q-Sync is difficult to land, or it is difficult to play an advantage. Previously, the screen refresh rate of smartphones had only a few changes (60Hz, 90Hz, 120Hz), it was difficult to match the synthesis time of different frames, and it was frequent The switch may cause the screen to be blurred.
OPPO and OnePlus introduced Q-Sync under the LTPO technology screen on the new flagship, and at the same time they developed O-Sync, which they call overclocking response. In addition to adapting to the synthesis time of different frames, it also speeds up the synchronization frequency between the screen and the processor to 360Hz(if 60Hz refresh is used as the benchmark, That is, it has been improved by 6 times), which can send the image rendered by the chip to the screen faster. When you touch it, you will have a faster response than the original device. This advantage is not obvious in normal applications, but it will have a more hands-on control in the game.
Currently, LTPO technology screens generally have these two advantages. In fact, they all support 120-speed frequency conversion with a refresh rate of 1Hz~120Hz. It can adjust the refresh rate according to different scenarios to save power. In the game, you can also perform more flexible rendering based on a faster synchronization frequency to achieve low latency.
But judging from the current products, there are good points and some areas where optimization is not enough. The good part is that it saves electricity and makes the control more user-friendly. Where optimization is not enough, it is still in the variable frequency strategy of different software and different scenarios. This is also a point that requires manufacturers to continue to think and optimize.
Where is Apple’s advantage?
And the new iPhone that will use the LTPO technology screen will naturally have these advantages and disadvantages from now on.
The iPhone 12 series is far from perfect, and it seems that it’s just one piece of high refresh. Picture from: the Verge
It can reduce the battery life pressure brought by the high refresh rate screen to the iPhone(maybe similar to the current iPhone 12 series battery life), how to respond to the scene , The software frequency conversion of the screen refresh rate is still a challenge. As for the control with lower latency in the game, it can almost make the iPhone the best “gaming phone” again.
For the improvement brought by the high refresh rate, you can actually refer to the iPad Pro with ProMotion screen. Here I will talk about the frequency conversion strategy. The biggest difference between iPhone and Android is the right to speak in the third-party software ecosystem. Apple has a strong appeal to the iOS ecosystem, which is a major advantage in optimizing the frequency conversion strategy.
It can draw oneA rule framework, and then let developers optimize their own app’s different refresh rate calling strategies according to the rules. For example, in video apps such as YouTube and Station B, before entering the horizontal screen and maximizing the video, The highest refresh rate can be used, and after full screen, it can be consistent with the video frame rate (such as 24Hz, 30Hz, 60Hz, etc.). In this way, there is no need to optimize all the app ecology and scene rules by yourself.
This is like the dark mode that was launched at the time. Android and iOS adopted completely different strategies. Androids have pre-built options for global darkening in the machine, and can force the application to switch to dark according to the rules, while iOS has It is for developers to optimize and complete by themselves. Different right to speak to the ecology has led to different ways of handling them.
This does not mean to belittle Android and improve iOS. It just shows that Apple has stronger control and self-control in the software ecology, so it should have a more mature frequency conversion strategy on the LTPO technology screen.
The new technology is like a piece of uncultivated black land, and the products of different manufacturers are like young trees that have just sprouted. It always needs to be trimmed and pruned continuously during the growth process to make it grow better and become towering. tree. The people who first arrived in this land to plant trees may not have enough experience and need to continue to explore the wall, while those who come later can optimize according to their existing experience, so that their trees can grow faster.
To make this new land full of saplings and become a forest, more manufacturers need to participate, stimulate their wisdom, and constantly optimize the process of planting trees to make it more efficient and reasonable. The same is true for the LTPO technology screen. It may be a new feature of tomorrow’s products. Its perfect presentation requires the participation of more manufacturers, whether it is the first batch of Samsung, OPPO, OnePlus, or later Apple, Xiaomi and so on.
On the new land of afforestation, they are all worthy of our respect. With their development, we will have a whole forest to enjoy the shade and enjoy.