Abstract: A board-to-board radio frequency coaxial connector includes an adapter, a clamping socket including a first outer conductor, a first inner conductor, and a first insulator, and a fixed socket including a second outer conductor, a second inner conductor, and a second insulator. The clamping socket and the fixed socket are respectively arranged at two ends of the adaptor. The adapter includes a third outer conductor, a third inner conductor, and two third insulators. The two third insulators are respectively arranged at two ends of the third inner conductors and sleeved on an outside of the third inner conductor. Each of the two third insulators includes a body portion and an auxiliary portion. The body portion includes a second groove recessed inwardly from its outer circumferential surface. Two ends of the third outer conductor are respectively electrically connected to the first and second outer conductors.

Abstract: The invention relates to the technical field of camera devices and discloses a camera lens with a protective shell. The camera lens comprises a base. A protective shell is disposed on one side of an outer surface of the base and comprises a support plate. A tube is disposed on one side of an outer surface of the support plate. A threaded rod is disposed on one side of an outer surface of the tube. According to the camera lens with a protective shell, the threaded rod drives the connecting plate to move when rotating, then the connecting plate drives the gear lever to move to drive the rotary gears on front and back side to rotate, and then the protective plates rotate around the rotary gears to be opened to allow the camera to be used. In this way, the camera lens is protected.

Abstract: A method provides data synchronization between a sensor hub and an application processor, which contains at least the following steps: generating and adding a plurality of absolute time stamps in a sensor-data stream; and generating and adding a plurality of pieces of sensor data and a plurality of relative time stamps in the sensor-data stream between the moments of generating each two adjacent absolute time stamps, wherein each relative time stamp is associated with one piece of sensor data.

Abstract: A board-to-board radio frequency coaxial connector includes an adapter, a clamping socket including a first outer conductor, a first inner conductor, and a first insulator, and a fixed socket including a second outer conductor, a second inner conductor, and a second insulator. The clamping socket and the fixed socket are respectively arranged at two ends of the adaptor. The adapter includes a third outer conductor, a third inner conductor, and two third insulators. The two third insulators are respectively arranged at two ends of the third inner conductors and sleeved on an outside of the third inner conductor. Each of the two third insulators includes a body portion and an auxiliary portion. The body portion includes a second groove recessed inwardly from its outer circumferential surface. Two ends of the third outer conductor are respectively electrically connected to the first and second outer conductors.

Abstract: A user data sharing method comprises: acquiring information of a query medium; obtaining, according to the information of the query medium, at least one user account related to the query medium and relationship information of the at least one user account from a medium network, the relationship information of the user account comprising: a strength of a relationship between the user account and the query medium and a strength of a relationship between the user account and other user accounts; constructing a local medium network by using the obtained at least one user account and relationship information of the at least one user account; determining a trusted account from the at least one user account by using the local medium network; and acquiring user data of the trusted account and outputting the user data of the trusted account as the user data corresponding to the information of the query medium.

Abstract: A method provides data synchronization between a sensor hub and an application processor, which contains at least the following steps: generating and adding a plurality of absolute time stamps in a sensor-data stream; and generating and adding a plurality of pieces of sensor data and a plurality of relative time stamps in the sensor-data stream between the moments of generating each two adjacent absolute time stamps, wherein each relative time stamp is associated with one piece of sensor data.

Abstract: The invention introduces a method for data synchronization between a sensor hub and an application processor, which contains at least the following steps: generating and adding a plurality of absolute time stamps in a sensor-data stream; and generating and adding a plurality of pieces of sensor data and a plurality of relative time stamps in the sensor-data stream between the moments of generating each two adjacent absolute time stamps, wherein each relative time stamp is associated with one piece of sensor data.

Abstract: A mobile device including an acceleration sensor, a magneto sensor, a gyroscope sensor, and a processor is provided. The acceleration sensor, the magneto sensor, and the gyroscope sensor generate acceleration data, magnetic field data, and angular velocity data, respectively. The processor determines a pitch angle and a roll angle according to the acceleration data, determines a yaw angle according to the magnetic field data, and determines a quaternion according to the pitch angle, the roll angle, and the yaw angle. Also, the processor determines orientation information of the mobile device according to the quaternion and the angular velocity data, and adjusts the orientation information according to the acceleration data and the magnetic field data.

Abstract: An online-control cooling process for seamless steel tube for effectively refining grains, comprising the following steps: when the temperature of a crude tube is higher than Ar3, evenly spraying water along the circumferential direction of the tube so as to continuously cool the tube to T1° C.˜T2° C., the cooling rate being controlled to be N1° C./s˜N2° C./s, wherein T1=810?360C?80(Mn+Cr)?37Ni?83Mo, T2=T1+115° C., N1=55-80×C, N2=168*(0.8?C), and C, Mn, Cr, Ni and Mo in the equations each represent the mass percentage of corresponding elements in the seamless steel tube; then, cooling to the room temperature at cooling rate no more than 10° C./s. Correspondingly, also provided are a method for manufacturing seamless steel tube for effectively refining grains, and a seamless steel tube. The online-control seamless steel tube cooling process does not require adding too many alloying elements, which is simple and can yield seamless steel tubes with good grain refinement and better toughness.

Abstract: A user data sharing method comprises: acquiring information of a query medium; obtaining, according to the information of the query medium, at least one user account related to the query medium and relationship information of the at least one user account from a medium network, the relationship information of the user account comprising: a strength of a relationship between the user account and the query medium and a strength of a relationship between the user account and other user accounts; constructing a local medium network by using the obtained at least one user account and relationship information of the at least one user account; determining a trusted account from the at least one user account by using the local medium network; and acquiring user data of the trusted account and outputting the user data of the trusted account as the user data corresponding to the information of the query medium.

Abstract: The invention introduces a method for data synchronization between a sensor hub and an application processor, which contains at least the following steps: generating and adding a plurality of absolute time stamps in a sensor-data stream; and generating and adding a plurality of pieces of sensor data and a plurality of relative time stamps in the sensor-data stream between the moments of generating each two adjacent absolute time stamps, wherein each relative time stamp is associated with one piece of sensor data.

Abstract: A mobile device including an acceleration sensor, a magneto sensor, a gyroscope sensor, and a processor is provided. The acceleration sensor, the magneto sensor, and the gyroscope sensor generate acceleration data, magnetic field data, and angular velocity data, respectively. The processor determines a pitch angle and a roll angle according to the acceleration data, determines a yaw angle according to the magnetic field data, and determines a quaternion according to the pitch angle, the roll angle, and the yaw angle. Also, the processor determines orientation information of the mobile device according to the quaternion and the angular velocity data, and adjusts the orientation information according to the acceleration data and the magnetic field data.