Patent of drones (Dajiang articles, two)

The head of the intellectual property department of DJI directly participates in the overall operation of the company, and has the right to know the core business information such as the company's overall operation plan, and is directly responsible to the top management of the company. Integrating intellectual property work into the company's overall operations to help shape future growth is quite valuable for a growing company.

Patent of drones (Dajiang articles, two)

By Zach Wang

In 2010, Dajiang’s sales amounted to only 3 million yuan. With the success of Phantom 1, sales increased to 200 million yuan in 2012. Although Dajiang’s overseas drone aerial photography market has just started, it still got At the end of 2012, Li Xin, the investment director of Shenzhen Maixing Investment, the first round of venture capital institution in Dajiang, found Wang Wei (Li Xin, who has a background in intelligent flight control, is not only as keen on model aircraft as Wang Wei. It is also able to fully understand the core technology of the UAV products used in the aerial photography application of Dajiang and the possibility of widespread application in the market. The founder Wang Wei gave the company a valuation of 300 million yuan, which is equivalent to 15 times PE in 2012. The equity of % is in exchange for the cash of 10 million RMB invested by Maixing. However, it turns out that Wang Wei still underestimated the explosive power of his own company: in 2013, the sales performance of Dajiang reached 800 million yuan.


As mentioned in the above article, although Dhan's Phantom 1 is a fairly successful multi-rotor drone, some models sold often leave the user's control because of software failure, as Wang Wei thinks, not enough. The perfect Phantom 1 urgently needs an upgraded version to achieve "perfect" release, so in less than one year after the first product was released, DJI "XU MOU YI JIU" released its second generation "Dajiang Elf" "The series, including Phantom 2, Phantom 2 Vision, and Phantom 2 Vision+, which helped Wang Feng "capture" Zhang Ziyi's heart, this new product release rhythm is rare in the industry, it can be seen that Dajiang is quite confident in technical performance. In 2013, Dajiang also won the first prize of the Shenzhen Science and Technology Progress Award for technical development in the year by “a drone flight controller based on GPS/INS intelligent navigation system”. If Phantom 1 is to let the market know about Xinjiang, then the Phantom 2 series is to make the market recognize Dajiang.

Patent of drones (Dajiang articles, two)


With good market revenue and venture capital, Dajiang has invested more in research and development. At the same time, Dajiang has paid more attention to intellectual property protection. Since 2013, Dajiang’s patent application has entered an outbreak period. : In terms of Chinese patents, Dajiang applied for 58 patents in 2013; in 2014, it applied for 329 patents (in contrast, in 2012, Dajiang submitted only 22 patent applications) and within two years. Through the PCT, 53 applications were submitted to the International Bureau. As a result, Dajiang has also begun to deploy patents overseas.

In terms of the quality of patent texts, it can be seen from the public texts of the early DJI patents and the public texts of 2015 and 2016 that there is a clear difference between the two (interested friends can search for the next big Xinjiang) As well as the early patent texts, in the application strategy, Dajiang also submitted Chinese applications to the Chinese Intellectual Property Office from all the early patents, and the first application for partial patents was submitted to the International Bureau in PCT. It is also richer in the technical points involved, including not only the flight control and pan/tilt that it is good at, but also the fuselage, propeller, landing gear, shooting control, image processing, lens, power calculation, charging control, firmware upgrade, Harness processing, motors, ESCs, remote controls, operating experience, antennas, digital transmission, image transmission and applications. Of course, this is due to the in-depth exploration of the aerial photography potential of drones and the importance of intellectual property rights at the decision-making level.

It is reported that the person in charge of the intellectual property department of Dajiang directly participates in the overall operation of the company, has the right to know the core business information such as the overall operation plan of the company, and is directly responsible to the top management of the company. Integrating intellectual property work into the company's overall operations to help shape future growth is a valuable experience for a growing company.



In 2012, Dajiang released the world's first three-axis brushless motor direct drive Yuntai Zenith Z15-5N, using attitude analysis and ultra-high-precision brushless motor control to revolutionize the response of the servo-type gimbal. The video jitter caused by the unsmoothness and the image ripple problem have opened up the true aerial photography era of the multi-rotor drone. From 2013 to 2014, consumer multi-axis UAVs began to fully adopt the design of brushless heads and cameras. The representative cloud platform is the Zenmuse H3-2D in DJI. The highlights are focused on the PTZ drive and reduction. Vibrate and stabilize. For example, improving the rotation accuracy of the pan-tilt drive motor and the smoothness of the rotation (CN104076825A; CN104075084A; CN203286221U; CN203135367U; CN104078913A), solving the problem of the winding of the pan-tilt drive motor when winding the wire (CN104075093A; CN203131382U), in the load base and the mount The damping ball (PCT/CN2014/074499; CN203819498U; CN203558203U) is widely used in the follow-up products of Dajiang) and the stabilization equipment is miniaturized to achieve anti-shake (CN104903790A; ie WO/2015/051501; The number of claims in this patent publication is up to 81). Such innovations are innumerable. The innovative technologies of Dajiang on the PTZ are mainly focused on vibration reduction and stability, center of gravity adjustment, attitude control, PTZ drive and carrier.

Patent of drones (Dajiang articles, two)
Related patent technology for cloud table vibration reduction and stabilization

Due to the limitations of the brushless pan/tilt structure, the third-party cameras mounted on the drone are basically GoPro's professional sports cameras, making the cost of drones high. UAV manufacturers independently developed high-definition cameras and integrated them into the PTZ. The trend of integration into the standard second-generation UAV design has gradually been widely recognized, namely, with flight control systems, brushless PTZ, HD Wide-angle camera and WiFi digital image transmission are the core technologies. Obviously, DJI has a first-mover advantage in the flight control system and the brushless cloud platform. Therefore, it is extremely urgent to solve the problem of high-definition wide-angle shooting and image transmission technology.

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