Abstract: A display module, an assembly method of the display module and a display apparatus are provided, which belongs to the technical field of displaying, and the display module includes: a cover plate, a side of which including a first area and a second area adjacently connected to the first area; a display panel attached to the first area; and a spacer attached to a part or all of the second area, a height of the spacer being greater than a height of the display panel. The spacer includes a housing and an injection cavity recessed into interior of the housing, the injection cavity is close to the display panel and the injection cavity is filled with an injection material; and a space cavity is provided at a side of the display panel close to the spacer, and the space cavity is filled with the injection material.

Abstract: The present disclosure discloses a camera optical lens. The camera optical lens includes, from an object side to an image side, a first lens with a positive refractive power; a second lens with a negative refractive power; a third lens with a negative refractive power; a fourth lens with a positive refractive power; and a fifth lens with a negative refractive power. The camera optical lens satisfies the following conditions: 0.40?f1/f?0.70; 2.00?(R5+R6)/(R5?R6)?20.00; 1.20?d4/d5?5.00 and ?15.00?R7/R8??1.50. The camera optical lens of the present disclosure has excellent optical performances, and meanwhile can meet design requirements of a large aperture, a long focal length and ultra-thin.

Abstract: A display device includes: a display panel; and a polarizer, an optical adhesive, and a cover plate sequentially arranged on the display panel. The display panel has a transparent region. The polarizer has first and second surfaces parallel to each other, and the first surface is proximal to the display panel. The polarizer has therein a through hole penetrating through the first and second surfaces. The through hole has first and second boundaries at the first and second surfaces, respectively. An orthogonal projection of the first boundary on the second surface is inside and not in contact with the second boundary. For third and fourth boundaries of the through hole parallel to the first boundary, an orthogonal projection of the third boundary on the fourth boundary does not extend beyond the fourth boundary, the third boundary being closer to the first boundary than the fourth boundary.

Abstract: A secure ranging method and an apparatus are provided. The method includes: a receiving-end device and a transmitting-end device obtain a session key through a narrowband system. The devices of both parties further generate secure CTSs in a symmetric manner based on the session key in combination with CTS configuration information, and perform inter-device ranging in a UWB system by using the CTSs. According to this application, the CTS can be flexibly configured based on the CTS configuration information, to improve secure ranging performance. In addition, the narrowband system replaces the UWB system to perform key-related information negotiation, and ranging is performed in the UWB system, so that high-accuracy ranging is implemented while low power consumption is considered.

Abstract: In various examples, sensor calibration for autonomous or semi-autonomous systems and applications is described herein. Systems and methods are disclosed that calibrate image sensors, such as cameras, using images captured by the image sensors at different time instances. For instance, a first image sensor may generate first image data representing at least two images and a second image sensor may generate second image data representing at least one image. One or more feature points may then be tracked between the images represented by the first image data and the image represented by the second image data. Additionally, the feature point(s), timestamps associated with the images, poses associated with image sensors (e.g., poses of a vehicle), and/or other information may be used to determine one or more values of one or more parameters that calibrate the first image sensor with the second image sensor.

Abstract: A clock synchronization method includes sending a narrowband synchronization frame via a narrowband system, to complete coarse clock synchronization in a wideband system; and sending a wideband frame after duration, allocated by the narrowband system, for switching from a narrowband to a wideband ends, to complete fine clock synchronization in the wideband system.

Abstract: An information exchanging method includes a first device and a second device that negotiate, using respective narrowband communication systems, a parameter used in a ranging process, and then perform ranging using respective ultra-wideband (UWB) systems based on the parameter.

Abstract: Example ranging methods and apparatus are described. In one example method, a first device sends ranging control information to a second device through a first channel, where the ranging control information is used to configure a ranging frame. The first device receives or sends the ranging frame through a second channel, where a bandwidth of the second channel is greater than a bandwidth of the first channel. Based on the foregoing solution, the first device and the second device may exchange the ranging control information and a measurement result through the first channel, and perform ranging through the second channel.

Abstract: A ranging method includes a first device that sends a ranging control frame to a second device using a first resource with a lower bandwidth. The ranging control frame includes ranging parameter information. The first device and the second device perform ranging based on the ranging parameter information using a second resource.

Abstract: This application provides example ultra-wideband (UWB) signal synchronization methods and example communication apparatuses. One example method includes processing a narrowband signal to obtain time-frequency synchronization information of the narrowband signal. A synchronization signal of an UWB signal can be processed based on the time-frequency synchronization information of the narrowband signal to obtain time-frequency synchronization information of the UWB signal, where the UWB signal includes the synchronization signal and a ranging signal. The ranging signal can be received based on the time-frequency synchronization information of the UWB signal.

Abstract: In various examples, to support training a deep neural network (DNN) to predict a dense representation of a 3D surface structure of interest, a training dataset is generated using a simulated environment. For example, a simulation may be run to simulate a virtual world or environment, render frames of virtual sensor data (e.g., images), and generate corresponding depth maps and segmentation masks (identifying a component of the simulated environment such as a road). To generate input training data, 3D structure estimation may be performed on a rendered frame to generate a representation of a 3D surface structure of the road. To generate corresponding ground truth training data, a corresponding depth map and segmentation mask may be used to generate a dense representation of the 3D surface structure.

Abstract: In a noncontact vital sign sensing device of the present invention, a gain detector is provided to detect a gain between an oscillation signal and a received signal. Gain detection can cancel out the amplitude noise of an oscillator such that frequency information of vital sign(s) of a subject can be extracted from the gain without null-point issue, and vital sign(s) of the subject located at any position within sensing range can be detected.

Abstract: Disclosed are a processing apparatus, a corrugated plate, and a storage container. The processing apparatus includes a pair of slide plates, a pair of press plates, a shaping block, and a driving mechanism. The driving mechanism includes a slide plate driving portion linked to a shaping block driving portion, allowing the slide plate driving portion drives the pair of slide plates to approach each other at a first predetermined speed, the shaping block driving portion moves the shaping block downward at a second predetermined speed, and the first and second predetermined speed are specifically correlated with respect to a predetermined forming profile of an intersection portion. The processing apparatus of the present disclosure causes running speeds of various portions that move in different directions to extrude a blank plate to be specifically associated, so that the formation process is particularly applicable to a corrugated plate having the predetermined corrugated shape.

Abstract: In various examples, to support training a deep neural network (DNN) to predict a dense representation of a 3D surface structure of interest, a training dataset is generated using a parametric mathematical modeling. A variety of synthetic 3D road surfaces may be generated by modeling a 3D road surface using varied parameters to simulate changes in road direction and lateral surface slope. In an example embodiment, a synthetic 3D road surface may be created by modeling a longitudinal 3D curve and expanding the longitudinal 3D curve to a 3D surface, and the resulting synthetic 3D surface may be sampled to form a synthetic ground truth projection image (e.g., a 2D height map). To generate corresponding input training data, a known pattern that represents which pixels may remain unobserved during 3D structure estimation may be generated and applied to a ground truth projection image to simulate a corresponding sparse projection image.

Abstract: A display module, an assembly method of the display module and a display apparatus are provided, which belongs to the technical field of displaying, and the display module includes: a cover plate, a side of which including a first area and a second area adjacently connected to the first area; a display panel attached to the first area; and a spacer attached to a part or all of the second area, a height of the spacer being greater than a height of the display panel. The spacer includes a housing and an injection cavity recessed into interior of the housing, the injection cavity is close to the display panel and the injection cavity is filled with an injection material; and a space cavity is provided at a side of the display panel close to the spacer, and the space cavity is filled with the injection material.

Abstract: In various examples, a 3D surface structure such as the 3D surface structure of a road (3D road surface) may be observed and estimated to generate a 3D point cloud or other representation of the 3D surface structure. Since the estimated representation may be sparse, a deep neural network (DNN) may be used to predict values for a dense representation of the 3D surface structure from the sparse representation. For example, a sparse 3D point cloud may be projected to form a sparse projection image (e.g., a sparse 2D height map), which may be fed into the DNN to predict a dense projection image (e.g., a dense 2D height map). The predicted dense representation of the 3D surface structure may be provided to an autonomous vehicle drive stack to enable safe and comfortable planning and control of the autonomous vehicle.

Abstract: The invention provides a colloidal gold immunochromatographic test strip for detecting enramycin, a preparation method, and an application thereof, which belongs to the field of rapid immunoassay; the test strip comprises a backing plate, a sample pad, a conjugate pad, a nitrocellulose membrane, and an absorbent pad; the conjugate pad was fixed with colloidal gold-labeled enramycin monoclonal antibody; the nitrocellulose membrane is equipped with a T-line coated with enramycin artificial antigens and a C-line coated with goat anti-mouse secondary antibodies. The invention also provides a kit for detecting enramycin, comprising a test strip, a sample treatment solution, and a sample diluent.

Abstract: A magnetic tunnel junction is disclosed wherein the reference layer and free layer each comprise one layer having a boron content from 25 to 50 atomic %, and an adjoining second layer with a boron content from 1 to 20 atomic %. One of the first and second layers in each of the free layer and reference layer contacts the tunnel barrier. Each boron containing layer has a thickness of 1 to 10 Angstroms and may include one or more B layers and one or more Co, Fe, CoFe, or CoFeB layers. As a result, migration of non-magnetic metals along crystalline boundaries to the tunnel barrier is prevented, and the MTJ has a low defect count of around 10 ppm while maintaining an acceptable TMR ratio following annealing to temperatures of about 400° C. The boron containing layers are selected from CoB, FeB, CoFeB and alloys thereof including CoFeNiB.

Abstract: A system includes a fiber optic cable configured to detect one or more first parameters of a leak event along a fluid conduit, and one or more sensors configured to measure one or more second parameters of a fluid flow along the fluid conduit. The system also includes a controller including a processor, a memory, and instructions stored on the memory and executable by the processor to: detect the one or more first parameters of the leak event via the fiber optic cable, measure the one or more second parameters of the fluid flow via the one or more sensors, input the one or more first parameters and the one or more second parameters into a model configured to simulate operation with the fluid conduit, and output leak information corresponding to the leak event via execution of the model.

Abstract: A display module includes a display panel having a fingerprint identification area and a light-transmitting protective film located on a back surface of the display panel. The light-transmitting protective film includes a protective layer, a light-shielding pattern located on a side of the protective layer, and a light-transmitting adhesive layer located on a side of the light-shielding pattern away from the protective layer. The protective layer has a target area. At least the target area is a light-transmitting area, and the target area at least partially overlaps with the fingerprint identification area. The light-shielding pattern defines a plurality of imaging apertures, the plurality of imaging apertures are arranged at intervals, and orthogonal projection of the plurality of imaging apertures on the protective layer are at least located in the target area. A surface of the light-transmitting adhesive layer away from the light-shielding pattern is in contact with the display panel.