Xiaomi mobile phone introduced the two exclusive core technologies of Xiaomi 12 Pro: sliding variable speed screen and natural eye protection mode.
Android’s first sliding screen
The Xiaomi 12 Pro uses the second-generation LTPO screen with a refresh rate of 120Hz and a resolution of 2K+. Officials say that the LTPO material allows the screen to actively reduce the refresh rate when needed to save power consumption this is a hardware capability, but it also requires software cooperation Xiaomi Smart Dynamic Refresh Rate Technology.
Ideally, for lists in a swipe, the optimal refresh rate would be to set Displacement/Frames to a constant value, i.e. the farther the swipe is, the more frames are required. In actual situations, in order to ensure that the vision is not stuck, the sliding speed change screen of Xiaomi 12 Pro will increase the frame rate to 120Hz at the moment when the user’s finger touches the screen, and gradually reduce the refresh rate as the list sliding speed decreases. , the refresh rate is 10Hz until the list stops.
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It is worth noting that the Xiaomi 12 Pro is the only model in the Android camp that has the ability to slide down slowly. In order to achieve such a function, Xiaomi needs to refactor the ScrollView and ListView in the Android native controls to increase the ability to judge the sliding speed.
In this process, you need to grasp the node that switches the frame rate. If you intervene too early, it will cause visual stuttering; if you intervene too late, it will not save power. After investigating user behavior, we know that some scenarios do not require very high refresh rates, such as low frame rate animation, low frame rate video, and input methods. When the system detects these scenarios, it can actively reduce the screen refresh rate to save power.
In browsing and reading scenarios, many times the screen is stationary, then we can reduce the refresh rate to 10Hz or even 1Hz to greatly save power consumption.
Eye protection mode that is not easy to color cast
The Xiaomi 12 series is equipped with a smarter screen eye protection mode, which no longer adopts a “one size fits all” approach but makes different adjustments for different colors. Taking the CIE color space as an example, the color with the most blue light components is the area between pure blue (0, 0, 255) and pure white (255, 255, 255). Although other colors also have blue light components, the proportion is low.
Therefore, Xiaomi needs to treat different colors differently so that most harmful blue light can be reduced without affecting the hue of other colors. This is the natural eye protection mode of the Xiaomi 12 series.
On top of this, the Xiaomi 12 series retains traditional features such as primary color screen, Dolby Vision, 10,000-level dimming, supports HDR video with a peak value of more than 1000nit, and has passed the DisplayMate A+ certification. It is the best mobile phone screen in the history of Xiaomi so far.
(via)
