Abstract: Disclosed is a high-precision dynamic real-time 360-degree omnidirectional point cloud acquisition method based on fringe projection. The method comprises: firstly, by means of the fringe projection technology based on a stereoscopic phase unwrapping method, and with the assistance of an adaptive dynamic depth constraint mechanism, acquiring high-precision three-dimensional (3D) data of an object in real time without any additional auxiliary fringe pattern; and then, after a two-dimensional (2D) matching points optimized by the means of corresponding 3D information is rapidly acquired, by means of a two-thread parallel mechanism, carrying out coarse registration based on Simultaneous Localization and Mapping (SLAM) technology and fine registration based on Iterative Closest Point (ICP) technology.

Abstract: This application relates to a UWB base station anomaly detection method. The method includes: obtaining a first distance that is between each of the N UWB base stations and the UWB tag and that is obtained through measurement; obtaining an estimated value of spatial coordinates of the UWB tag in the first coordinate system based on the first distance and spatial coordinates of each UWB base station in the first coordinate system; obtaining a second distance between each UWB base station and the UWB tag based on the estimated value and the spatial coordinates of each UWB base station in the first coordinate system; and determining, based on the first distance and the second distance that correspond to each UWB base station, whether a UWB base station in the N UWB base stations is abnormal.

Abstract: A three-section synchronous slide rail, which has simple structure, longer service life, is easy to install and replace is provided, which includes: two sets of slide rail assemblies which comprise a fixed rail, a middle rail and a sliding rail, synchronization components comprising a flexible deflector unit and a roller, the flexible deflector unit is connected with the fixed rail and the sliding rail, the middle rail is connected with a rope base, a first end of the flexible deflector unit is wound around a first end of the rope base and fixed to the rope base, and a second end of the flexible deflector unit bypasses the roller and is reversely wound on a second end of the rope base and the second end of the flexible deflector unit is fixed to the rope base, a connecting rod is connected between the rope bases.

Abstract: A nanoscale positioning apparatus with a large stroke and multiple degrees of freedom and a control method thereof are provided. The nanoscale positioning apparatus includes a base, a plurality of parallel branch chain mechanisms and a working table. Each of the parallel branch chain mechanisms includes an electric cylinder, a micro-motion drive mechanism, a laser interferometer, a grating measuring device, a self-locking upper hinge and a self-locking lower hinge. The top of the base is connected to one end of the electric cylinder through the self-locking lower hinge. The other end of the electric cylinder is connected to one end of the micro-motion drive mechanism. The other end of the micro-motion drive mechanism is connected to the bottom of the working table through the self-locking upper hinge. The positioning apparatus has multiple degrees of freedom, and realizes multi-degree-of-freedom arbitrary position adjustment of the working table through parallel branch chain mechanisms.

Abstract: This application discloses an application switching method. In the method, an electronic device may separately display interfaces of corresponding applications by using a plurality of floating windows. When a quantity of floating windows is greater than a preset quantity, and the electronic device detects that a new floating window is opened, the electronic device may switch the first displayed floating window to a form of a floating ball, and add a new floating window. In addition, the electronic device may switch the one or more floating windows to one or more corresponding floating balls for display. When detecting a sliding operation input by the user, the electronic device may switch a current floating window to a corresponding floating window on which the minimization operation is first or last performed. In this way, the electronic device can simultaneously display a plurality of applications, and quickly switch any one of the applications.

Abstract: A method for manufacturing a sigma-shaped groove in a semiconductor substrate includes: step 1: performing the first etching to form a U-shaped groove in a selected area of the substrate; step 2: performing a second etching configured to expand an opening width of the top sub-groove outward laterally, without changing an opening width of the bottom sub-groove and a depth of the groove; and step 3: performing the third etching which has different etching rates on different crystal surfaces of the semiconductor substrate to further expand the groove into a sigma-shaped groove with a sigma-shaped cross section. An increase of the opening width of the top sub-groove shifts the upper side surface towards an outer side of the sigma-shaped groove, resulting in an upward shift of the apex and reduces a vertical spacing between the apex and top surface of the semiconductor substrate, thereby improving the device performance.

Abstract: Projection methods and systems are disclosed in this disclosure. In an implementation, a method includes: A first device that displays first content, detects a first gesture operation, and recognizes the detected first gesture operation, where the first gesture operation is a continuous and moving gesture operation; a second device detects the first gesture operation, and recognizes the detected first gesture operation, where the second device establishes a communication connection to the first device; if recognizing that the first gesture operation is a projecting gesture, the first device projects, to the second device, the first content displayed by the first device; and if recognizing that the first gesture operation is a projected gesture, the second device receives the first content projected by the first device, and displays the first content on the second device.

Abstract: Embodiments of this application provide an always-on-display method and an electronic device. The method includes: displaying, by an electronic device, an always-on-display screen, where the always-on-display screen includes a first image of a first display object; in response to detecting by the electronic device that an external object satisfies a first preset condition, displaying, by the electronic device, a second image of a second display object, where the second image is different from the first image. In the embodiments of this application, the always-on-display screen displayed by the electronic device can change according to the external object. When the external object satisfies a preset condition, a corresponding image or motion video is displayed, so that the always-on-display screen can be flexibly displayed.

Abstract: A method includes displaying, by an electronic device, a graphical user interface (GUI) of a first application on a touchscreen of the electronic device, detecting, by the electronic device, a screenshot operation from a user, taking, by the electronic device, a screenshot of the GUI in response to the screenshot operation, displaying, on the touchscreen, a first preview image corresponding to an obtained first screenshot, detecting, by the electronic device, a first touch operation on the first preview image, updating the first preview image to a second preview image in response to the first touch operation, and displaying the second preview image on the touchscreen.

Abstract: Embodiments of this application provide an always-on-display method and an electronic device. The method includes: displaying, by an electronic device, an always-on-display screen, where the always-on-display screen includes a first image of a first display object; in response to detecting by the electronic device that an external object satisfies a first preset condition, displaying, by the electronic device, a second image of a second display object, where the second image is different from the first image. In the embodiments of this application, the always-on-display screen displayed by the electronic device can change according to the external object. When the external object satisfies a preset condition, a corresponding image or motion video is displayed, so that the always-on-display screen can be flexibly displayed.

Abstract: A preparation of a homogeneous polysaccharide from a Radix Puerariae aqueous extract is provided and the lipid-lowering activity of the polysaccharide is studied. It is proved through in vivo experiments that the homogeneous polysaccharide QL extracted from Radix Puerariae (a genuine medicinal material in Jiangxi Province) in the present disclosure has significant lipid-lowering activity, can significantly reduce a serum triglyceride content and a liver index, and can be used to develop a potential safe and effective lipid-lowering drug.

Abstract: A method and an apparatus for displaying an operation interface, and a touchscreen terminal, where the method includes: receiving a first pull-down operation in a first set area on a touchscreen; displaying a first operating interface; receiving a second pull-down operation in the second set area on a touchscreen; displaying a second operating interface, wherein display width of the second operating interface is the same as display width of the first operating interface, which is the same as width of the touchscreen.

Abstract: Embodiments of this application relate to the field of intelligent terminals, and provide a screen sharing method, a terminal, and a storage medium. In the method, a first local terminal sends a first shared picture of the first local terminal to a peer terminal. The first local terminal receives a second shared picture of the peer terminal that is sent by the peer terminal. The first local terminal receives a third shared picture of a second local terminal that is sent by the second local terminal. The first local terminal sends the third shared picture to the peer terminal. The first local terminal displays a first interface, where the first interface includes at least the second shared picture.

Abstract: A notification message preview method includes displaying, by an electronic device, a notification message in the message group on a first card, where the message group includes N notification messages, and other notification messages in the message group are hidden, receiving, by the electronic device, a preset operation from a user on the first card, and displaying, in response to the preset operation; by the electronic device, M notification messages in the message group on a second card, where the M notification messages are M of the N notification messages, and where the M notification messages include the notification message.

Abstract: A method for limiting usage of an application on a mobile terminal includes presetting a usage limitation condition for the application, where the usage limitation condition includes a geographical location, a time, and a network condition of the mobile terminal. When an input operation of a user is received, the method includes obtaining a current operation environment corresponding to the usage limitation condition, limiting usage of the application when the operation environment meets the usage limitation condition, or normally using the application when the operation environment does not meet the usage limitation condition.

Abstract: Certain aspects relate to systems and techniques for a patient platform system that includes a table and one or more kinematic chains that are coupled to the table. The table includes a rigid base and a table top that is movable relative to the rigid base. One or more processors initiate first movement of the table top relative to the rigid base in accordance with a user request, and move the one or more kinematic chains relative to the rigid base in coordination with the first movement of the table top such that one or more preset conditions are maintained during the first movement of the table top.

Abstract: An application program control method includes acquiring user operation information, determining, according to the user operation information, an application program icon operated by a user, determining a target control operation according to a control operation of an application program corresponding to the application program icon, and executing the target control operation.

Abstract: A method and an apparatus for displaying an operating interface, and a touchscreen terminal, where the method includes: receiving a touch operation that is input by a user in a first set area on a touchscreen; and when it is detected that the touch operation ends in a second set area, displaying, on the touchscreen, a second operating interface corresponding to the second set area. An operating interface can be obtained by means of one touch operation, and without complex operation steps to switch between operating interfaces.

Abstract: A smart syringe system and method are provided. The system includes a smart syringe and an external device. The syringe obtains data of a dose administered to a patient and wirelessly transmit the data to the external device. Alternately, the external device obtains the data via an image of the syringe. The external device may execute an application configured to process the data and display information of the dose.

Abstract: In one embodiment, a method comprises: identifying, by a network management device, a location-based device group in a wireless data network comprising constrained wireless network devices, including identifying an identified subset of the constrained wireless network devices as member devices based on the member devices having respective physical locations within the location-based device group; identifying, by the network management device, a member device density for the location-based device group; setting by the network management device, for the location-based device group, a set of deployment group network parameters based on the member device density; and sending, by the network management device, the set of deployment group network parameters to the location-based device group for density-based deployment thereof by the member devices.