Moxiang Technology: Xiaomi VR glasses are doing this out

Back in December 2015, Tencent held the Tencent VR Developer Salon in Beijing. At that time, Li Shuxin served as the technical director of Tencent's Intelligent Device Innovation Center. He introduced the Tencent VR team's product plan for the next year to the developers present. Although it is only a plan, there are no real products, but it is enough to make VR developers excited - "Tencent also has to do VR."

Millet VR glasses and handles

Leave and start

Tencent's VR products, we have not waited, Li Shuxin chose to start another story. He left Tencent and became the CEO of Moxiang Technology. Lei Feng's editor naturally asked why he left Tencent, and why he chose Xiaomi. Everything seems to be back, "What kind of product to do".

"This stage of VR glasses products, like Lei Zong, is a high-end mobile phone accessories, or to use with Xiaomi mobile phones. Starting from around 2014, VR, responsible for Tencent's entire VR R&D and planning. We think this stage, like This form of product is optimized by matching with the mobile phone, which is most suitable for the current stage of product form. It is a strong connection with the mobile phone. There are many advantages when it is done by the ecological company, and the direction of other Xiaomi ecological chain enterprises is Very similar."

Although "we did a lot of pre-research projects last year, like the SDK, but lacked the carrier. At the beginning of this year, it is too early to see the one machine. At that time, it is too tangled to do the whole machine, if you can master it yourself. It can be an all-in-one machine. But the one-piece machine is obviously too early for the market. To be an integrated machine with a qualified experience, the retail price is basically around 3,000. This is a fixed asset for the user, which is a very serious matter."

At the same time, the content is not enough to support the all-in-one machine, and it needs to be popularized and accumulated by users during this period. Cardboard is very hot, but the experience is poor. He believes that the most promising opportunity at this stage is the first-line mobile phone manufacturers. "There is a relatively low threshold, but a good experience device that allows users to experience VR content for a longer period of time."

"Tencent will be more biased in application and software, and it is difficult to land on the system. Frankly speaking, after a lot of efforts, we tried to cooperate with mobile phone manufacturers at Tencent. It is difficult to achieve a better model. But if not If you have a mobile phone, you can't do it yourself. Like system optimization, such as the SMS in the UI system, various notifications, including mutual jumps between applications, how can I achieve a completely immersive experience, this is not the case. Mobile phone cooperation can't be done."

And "the cooperation between big companies is not so easy, it is difficult for the two sides to reach a very good model that both sides recognize." Therefore, Li Shuxin decided to leave Tencent's own business to build Moxiang Technology and become a member of Xiaomi Ecological Chain Company.

Division of labor and cooperation

After determining the product form, the implementation stage, Xiaomi Exploration Lab and Moxiang Technology have a clear division of labor and cooperation. According to Li Shuxin, they are responsible for the development of VR glasses, and Xiaomi Exploration Lab is responsible for the optimization of mobile phone software. “We often need to work with Xiaomi to tune, for the entire experience, sensor optimization, calibration, algorithm tuning, need to work together.”

“The Xiaomi Discovery Lab is mainly aimed at the mobile phone part, software optimization on the mobile phone, and the entire distribution of the UI. For example, when each application comes in and out, return to the Launcher, or return to a VR mode, it must always maintain a complete VR mode. , a closed loop experience from beginning to end."

Like Samsung's Gear VR, Xiaomi VR glasses also chose to support only Xiaomi phones, namely Note 2, Xiaomi 5, 5s and 5s Plus. Li Shuxin said that in the current product form, "the plan will not support third-party mobile phones because of the need to optimize with the mobile phone."

"We feel that the first thing is to let users get the best experience. If the third-party mobile phone, the experience can't be guaranteed, there is no optimization in the system."

In order to adapt to four mobile phones released at different times, system tuning between VR glasses and mobile phones has become a difficult point of development. “Millet 5 was released at the beginning of this year. At that time, VR demand was not considered. If you want to cover more people and support the previous mobile phone, then you need to renovate the original system.”

Polishing of the product

Adjustable head size at the button

He said that the difficulty of the VR glasses part is the sensor. In addition to some hardware parameters, there are other aspects that need to be tuned.

"Like how to do tuning, it won't float, and the response is fast. On the one hand, for the calibration of the sensor, we have made a set of hundreds of thousands of equipment. The product includes the electronic part, a total of 248 parts, it looks very simple, but There are so many details in it, and many things have never been done before."

For example, many solutions have been repeatedly made on the optical system. Different optical parameters are matched with the structure, such as distance and size. For example, wearing a part of the sponge pad, using a delicate new material island velvet. The thickness of the mat also has an effect on the optical system. If the pad is thick or thin, the quality of the image will not be as good.

"But it is a soft thing. On the one hand, we have to be comfortable, but we can't get stuck. At the same time, everyone's head circumference and distance are different. We can't say that everyone can try it when designing, so it creates a very More hand boards, let different people test, repeat tuning, and finally achieve a good effect. In ergonomics, as well as vision system matching, it takes a lot of time to test."

The handle part also took a lot of thought. "It is very natural to let everyone take it in their hands, including the size, how to hold the hand, and the position of the center of gravity. It has to be debugged repeatedly. Like the position of the center of gravity, it is one thing to imagine, but it will actually do a lot of hand tests."

In the process of product formation, it is inevitable to compare with Gear VR. Li Shuxin said that he would design products for the pain points of Gear VR. For example, wearing a part of the belt, Gear VR's force point on the face, and no handle control. Therefore, they designed the Xiaomi VR glasses into a helmet, placed them on the forehead of the person, and added handles.

As for the handles that are said to be very similar to Google Daydream View, Li Shuxin said frankly, "The appearance and function are really similar. Only the trackpad and button position are arranged slightly differently. We were depressed for a while when the Daydream View controller was released. The handle of the Xiaomi VR glasses that will be released next will be plagiarized by everyone, but it is really original design."

External gyroscope = good experience?

On the day of the release of Xiaomi VR glasses, Feng Xin, founder of Stormwind Technology, commented in the circle of friends, “The appearance of Magic Mirror 4 and the technical solution of Magic Mirror 5.” Among them, the VR glasses external gyroscope scheme is more current VR manufacturers. The program adopted, Xiaomi also used the program. On the one hand, to support the already-listed mobile phones, on the other hand, external gyroscopes do not constitute all of the VR experience optimization. Because "the Android system itself has a limited sampling rate for the sensor, a lot of customization is required for the system core."

"I talked to the cooperating company last year. Someone came up with the concept: simply do not make such a helmet, just make a small module. Just make a small module, put the sensor on it, insert a wire into it, this The method is particularly intuitive, and even the helmet doesn't have to be done. But the actual implementation, the delay of the whole experience, and drift optimization is very limited. Because it can't be integrated into the SDK, and the subsequent graphic display, optimization can't be done. The sensor is just the first segment, and there are graphics systems behind it, and the optimization of the display can't be done. It has limited improvement on the experience, and many things need to be optimized in the phone ROM."

Another point that everyone pays attention to Xiaomi VR products is whether they support the Daydream platform. Li Shuxin explained,

"Time is still a little bit, Daydream itself has a lot of requirements on all aspects of hardware, it can only be a very high-end flagship machine, there are certain obstacles to meeting such requirements. Google has no clear requirements for the opening of Daydream, not like the past Android is so open and it will take a while."

He said that Daydream is definitely a direction, and the all-in-one is also a longer-term development direction.

The word "time point" was mentioned many times by Li Shuxin, and the Xiaomi VR glasses happened to be at the right time. In the future, whether Xiaomi will be an all-in-one machine or other forms of VR products will have to look at the "time point." "The big company doesn't worry about being unable to keep up. He has a lot of resources and needs to be big enough."

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