Speaking of Virtual Reality (VR), I have experienced HTC VIVE, and after 10 minutes of adaptation, I can play happily, but one problem restricts the game experience - annoying connection, not light helmet The heavy long line seriously affects the action. The author even doesn't even bother to shoot, not to mention running, jumping and emergency dodging. This makes the original zombie shooting game for FPS players become a zombie tower defense. "How good is a wireless VR?" This is the author's experience after VIVE, and the value of the combination of mobile and VR, and Qualcomm's Snapdragon processor has unique skills to make VR into the mobile field. Fun mobile VR Snapdragon has inherent advantages In the Qualcomm Snapdragon 820 processor, the Adreno 530 GPU, Hexagon 680 DSP and Kryo CPU form a new heterogeneous computing "iron triangle", on which Qualcomm joined the Qualcomm Symphony System Manager to coordinate the three divisions. This means that even higher processor performance and more power savings can be achieved when the correct processor is processing the corresponding task, or when the correct processor handles the corresponding task in the appropriate combination. Most importantly, there is no need to install special software to implement this feature, all of which can be done automatically by the underlying hardware. Here, the Snapdragon 820 can be called the "heterogeneous computing orchestra", and the virtual reality immersive experience is the brilliance of this orchestra. In the past, many people were arguing whether it was necessary to adopt 2K resolution on the mobile side. However, entering the VR era, the eyes are shortened from a few meters and tens of centimeters to the distance of only myopia glasses. When the eyes are only 1 to 2 cm away from the screen, it is necessary to say whether 2K resolution is necessary, and the 4K display becomes crucial. In order to ensure the smooth motion picture, the dedicated integrated circuit is often used on the TV for MEMC (motion compensation) to improve the frame rate and refresh rate of the picture. The Snapdragon 820 only needs the high performance of the Adreno 530 GPU to achieve high frame rate insertion under 4K, ensuring smooth picture. In addition, the image enhancement technology brought by Adreno 530 VPU and DPU is played in the VR experience. The image quality is improved by algorithms such as noise reduction, resolution interpolation and HDR processing. It is not afraid that consumers will observe images with a high magnification magnifying glass. (The VR experience without 4K display is as shown on the left, the pixel fights) (The motion display in the VR experience is also a problem, I believe no one wants to watch the picture on the left)) (Adreno 530 VPU and DPU opposite surfaces for HDR processing, noise reduction) All the players who have played the camera know that distortion distortion (distortion) and dispersion are the enemy. In VR, it is more prominent. Because VR needs 360 degree 3D look, at least the combination of the two images of the left and right eyes. The larger the distortion, the bigger the distortion. the dispersion will greatly affect the clarity, the distortion correction function Snapdragon processor and dispersion compensation (Adreno 530 GPU implemented by) the dual optimization can improve the quality of mobile VR. Only beautiful images are not enough. The VR experience needs to make the senses consistent, which is the strength of the éª 820 Heterogeneous Computing Orchestra. Qualcomm Immersive Audio technology delivers completely clear, immersive sound, while the Qualcomm Hexagon 680 digital signal processor (DSP) with Hexagon Vector Extension (HVX) uses sensor processing with the Adreno 530 GPU. Virtual rendering must work together. Sound effects, image transmission, and sensor parallelism allow users to feel that they are looking around in a VR world. In addition, mobile VR is a rigorous test for wireless data transmission. Compared with pure 4K video, mobile VR needs to transmit 360-degree visual information, which puts quite high requirements on network bandwidth. In the past, when playing online games, ping is the core of the game experience. When you experience VR/AR applications, it is mainly because of delay. Reliable high-speed data transmission is the truth. Think of VIVE's strong connection. Isn't it just for reliable high speed and low latency to transfer data? This is precisely the best of the Snapdragon processor. Compared with competitors, it only implements 802.11ac standard WiFi in the flagship mobile processor, and does not support MU-MIMO technology. Qualcomm supports 802.11ad standard WiFi from Snapdragon 820. In the past, WiFi was running on the 2.4GHz and 5GHz bands, while 802.11ad used the 60GHz band of the high-frequency carrier. In addition to bringing 7Gbps high bandwidth to meet the huge transmission bandwidth requirements of VR, it can effectively reduce the delay. The 820 uses 802.11ad to transmit VR content with a latency of only 20 milliseconds or even 10 milliseconds. This means that when users bring the Snapdragon 820 to support a stand-alone VR device or a standalone device such as a mobile phone, they can enjoy a VR experience similar to wired HTC VIVE. éªé¾™é»‘科技 not on the specification sheet One of the biggest challenges in implementing VR technology is to reduce the time between the input action (head rotation) and the screen update display (light from the refreshed screen), which is the moTIon-to-photon (MTP) delay. To put it simply, in the traditional VR experience, the vertigo is much more serious than watching the phone on a swaying bus. As your head turns or even walks away, you may feel stunned. Therefore, reducing the MTP delay of the device is the key to keeping the virtual world stable while the user moves. Studies have shown that a good user experience in virtual reality requires an MTP delay of approximately 20 milliseconds or less. A lot of processing steps are required before refreshing the display: combining various inertial sensors and vision sensors for sensor fusion, view generation, rendering/decoding, and image correction for sampling, and finally refreshing the display, given that the 60hz display device itself has 17 milliseconds The delay is made, so these operations must be done at high speed. The Snapdragon 820 is a SoC that can meet this requirement. Its heterogeneous computing design can achieve point-to-point connections, reducing the latency of individual task processing, while minimizing MTP delays in parallel with as many tasks as possible, allowing software, sensors and displays. The screens work together in harmony and have unique advantages to support a superior mobile virtual reality experience. In addition, Qualcomm has already realized the unified and management of the sensor interface, which facilitates fast feedback of data to each sub-processor of the SoC. Snapdragon VR SDK has been on the road to Google Dreamay A key part of the virtual reality platform is software and tools. Qualcomm Technologies has announced the Snapdragon VR SDK based on the Snapdragon 820. The Snapdragon VR SDK will support a number of critical new technologies for the best VR user experience for the first time. . They include: DSP sensor fusion, fast photon movement, stereo rendering with lens correction, VR layers, and power management. Wherein the DSP full use of sensor fusion techniques snapdragon 820 included in the SDK allows developers to easily obtain from a high-frequency accelerometer and a gyroscope sensing data snapdragon sensor core, and using predictive Hexagon 680 DSP head Position processing to create an immersive experience with better responsiveness. Fast photon movement for MTP latency reduction, providing fast 3D rendering with asynchronous time warping and single display caching, can reduce latency by up to 50%. The birth of the development kit means that mobile VR developers do not need to consider more complex technical issues, and the focus on content is conducive to the development of the entire industry. Google announced the Daydream virtual reality platform at the Google I/O conference. This is a high-performance mobile virtual reality platform based on Android N. It is likely to become the world's largest virtual reality platform. The Daydream smartphone will be equipped with éªDragon processor. The Snapdragon VR SDK complements Daydream, enabling OEMs to take advantage of Snapdragon's heterogeneous computing and sensor engine's best-in-class virtual reality experience to further optimize the virtual reality experience. Conclusion Mobile VR is on the road. Qualcomm and Google have already prepared software and hardware for developers and vendors. I believe that the next mobile VR experience will not only appear at the product launch, but will enter consumers, and it will not be a simple Rough smartphone set VR box products.
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