Abstract: The present disclosure provides a method and system for detecting a detection device located at an energy metering point of natural gas, comprising: obtaining a first detection data set collected by the detection device located at the energy metering point of the natural gas and determining whether the detection device is abnormal based on the first detection data set and a first historical detection data set.

Abstract: A method for managing resources, a computing device, and a computer-readable storage medium are provided. The method includes obtaining device information of multiple physical devices included in a computing node to confirm physical devices supporting a predetermined hardware resource management method; initializing at least one physical device among the physical devices supporting the predetermined hardware resource management method as a unified device view device; allocating a virtual storage address of the unified device view device, where the virtual storage address is mapped to a physical storage address of the physical device participating in the unified device view; transmitting data to the virtual storage address of the unified device view device; and issuing a computing task to the unified device view device via a task queue for using the physical device participating in the unified device view to execute the computing task.

Abstract: Embodiments of the present application disclose a fingerprint identification apparatus and an electronic device. The fingerprint identification apparatus is used to be disposed under a display screen and includes a first filter layer and a fingerprint sensor, and the first filter layer is disposed above the fingerprint sensor, the first filter layer includes a plurality of first filter units, and the plurality of first filter units are disposed in a region of the first filter layer corresponding to an edge region of the fingerprint sensor; sensing units of the edge region of the fingerprint sensor are configured to receive a light signal returned by a finger above the display screen and filtered by the plurality of first filter units; and sensing units of a middle region of the fingerprint sensor are configured to receive a light signal returned by the finger, to generate a fingerprint image of the finger.

Abstract: An embedded module according to the present invention includes a base substrate having a multi-layer wiring, at least two semiconductor chip elements having different element thicknesses, each of the semiconductor chip element having a first surface fixed to the base substrate and having a connection part on a second surface, an insulating photosensitive resin layer enclosing the semiconductor chip elements on the base substrate and being formed by a first wiring photo via, a second wiring photo via, and a wiring, the first wiring photo via electrically connected to the connection part of the semiconductor chip elements, the second wiring photo via arranged at the outer periphery of each of the semiconductor chip elements and electrically connected to a connection part of the base substrate, the wiring arranged so as to be orthogonal to and electrically connected to the first wiring photo via and the second wiring photo via.

Abstract: The present invention relates to a stent for interventional valve-in-valve, wherein the stent is a metal mesh tube, and is provided with four rows of transversely extending circumferential struts and a plurality of columns of axial struts arranged between the circumferential struts; the axial struts in each row are arranged in a staggered mode, the axial struts are connected with transverse struts attached thereon to form a staggered honeycomb meshes, the area of honeycomb meshes at the inflow end is basically the same as that of the honeycomb meshes in the middle row, and the area of honeycomb meshes at the outflow end is slightly larger than that of the honeycomb meshes in the other three rows.

Abstract: A light source system, comprising a first light source, a first wavelength conversion device, a second wavelength conversion device, a light path conversion element, and a light combining unit. The light path conversion element is configured to make an excitation light emitted by the first light source irradiate the first wavelength conversion device and the second wavelength conversion device in turn, so as to correspondingly excite and generate a first excited light and a second excited light. The light combining unit is configured to combine the first excited light and the second excited light. A projector system, comprising the light source system.

Abstract: A method of peak power management (PPM) for a memory chip with multiple memory dies is provided, where each of the multiple memory dies includes a PPM circuit having a PPM contact pad and PPM contact pads of the multiple memory dies are electrically connected. The PPM method includes the following steps: switching on a pull-down driver of the PPM circuit on a selected memory die of the memory chip; verifying a PPM enablement signal regulated by a pull-down current flowing through the pull-down driver; and performing a peak power operation on the selected memory die when the PPM enablement signal indicates that a total current of the memory chip is less than a maximum total current allowed for the memory chip.

Abstract: Disclosed are an extrinsic camera parameter calibration method, apparatus and system. The method includes: obtaining a calibration image photographed for a target location in a calibration cabin by a first camera provided therein; determining calibration feature information of the target location from the calibration image; obtaining reference feature information pre-determined from a reference image photographed for a target location in a reference cabin by a second camera provided therein; determining position-posture change data of the first relative to the second camera based on a calibration location of the calibration feature information in the calibration image and a reference location of the reference feature information in the reference image; and determining an extrinsic parameter of the first camera based on the position-posture change data. The extrinsic parameter of the first camera can be calibrated in real time and is closer to a currently actual state of the first camera when used.

Abstract: Provided are a live broadcast method and apparatus, a computer device, and a storage medium. The live broadcast method is applied to a virtual application, which is configured to display a virtual scene and play first audio data. The method includes generating a first user code for the virtual application; acquiring a second user code from a live broadcast platform, where the first user code is bound to the second user code; logging in to the live broadcast platform according to the second user code, so as to open a live broadcast room bound to the second user code; and sending live broadcast stream data to the live broadcast platform for playing in the live broadcast room, where the live broadcast stream data includes the virtual scene displayed by the virtual application, the first audio data played by the virtual application, and second audio data recorded by a microphone.

Abstract: The present invention discloses a power supply device for intelligently adjusting an output voltage and a method thereof. The power supply device receives an external voltage source in order to modulate an external voltage from the external voltage source and provide the modulated external voltage to an electrical device with a preset power mode comprises: a power plug, a voltage modulation module, a connecting part, a control module.

Abstract: Provided are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a metal complex containing a ligand La having a structure of Formula 1A and a ligand Lb, having a structure of Formula 1B. Such metal complexes are applicable to electroluminescent devices and can obtain a higher sublimation yield during sublimation and have a lower evaporation temperature and can provide better device performance such as an increased device lifetime and a narrower full width at half maximum. Further provided are an electroluminescent device containing the metal complex and a compound composition containing the metal complex.

Abstract: The utility model discloses a U-shaped electric toothbrush. The U-shaped electric toothbrush includes a handle and a U-shaped brush head. The U-shaped brush head includes an inner brush piece and an outer brush piece separated from each other. Bristles are provided on opposite surfaces of the inner brush piece and the outer brush piece. A driving device configured to drive the inner brush piece and the outer brush piece to move in a reciprocating and alternating manner is provided on the handle. The driving device includes a motor, a connecting rod, a connecting sleeve sheathed on the connecting rod, and a gear set. The motor drives, through the gear set, the connecting rod and the connecting sleeve to move in a reciprocating and alternating manner in a radial direction of the connecting rod. The outer brush piece is connected to an upper end of the connecting sleeve and is drivable to move by the connecting sleeve. An upper end of the connecting rod passes through the connecting sleeve and protrudes upward.

Abstract: The application relates to an encoding and decoding method and apparatus, an encoding-side device, and a decoding-side device. The method includes: if characteristic information of a current block meets a specific condition, determining a first reference block corresponding to the current block according to a first original motion vector of the current block, and determining a second reference block corresponding to the current block according to a second original motion vector of the current block; adjusting the first and second original motion vectors according to a first pixel value of the first reference block and a second pixel value of the second reference block to obtain a first target motion vector corresponding to the first original motion vector and a second target motion vector corresponding to the second original motion vector; encoding or decoding the current block according to the first and second target motion vectors.

Abstract: Disclosed is an orthophoto map generation method based on a panoramic map, the method comprising: overlapping and fusing a panoramic map and panoramic field depth data when the panoramic map is photographed, such that each pixel of the panoramic map has a corresponding field depth value; acquiring a pitch angle and azimuth angle of a reference pixel relative to a photographing device, and in conjunction with a 360 degree feature of a panorama, calculating an azimuth angle and pitch angle, relative to a camera, of an object represented by each pixel; in conjunction with calculation results and geographic coordinates, determined by a positioning device when the panoramic map is photographed, of the camera, calculating a geographic position corresponding to the object represented by each pixel to form point cloud data.

Abstract: An autonomous travel system equipped with a first travel route creation unit, a second travel route creation unit, a linked route creation unit, and a storage unit. The first travel route creation unit is capable of creating a first travel route. The second travel route creation unit is capable of creating a second travel route. The linked route creation unit has a function for creating the second travel route in conjunction with the creation of the first travel route by the first travel route creation unit and/or a function for creating the first travel route in conjunction with the creation of the second travel route by the second travel route creation unit. The storage unit stores, in association with each other, the travel route created by the first travel route creation unit or the second travel route creation unit, and the travel route created by the linked route creation unit.

Abstract: A dark field illuminator for microscopic imaging is provided. The dark field illuminator is arranged above an adjustable lens group of a unit microscopic imaging module and corresponds to the adjustable lens group, a surface of the dark field illuminator is attached to a back of a sample slide, and the sample slide is located between the dark field illuminator and the adjustable lens group; the dark field illuminator includes a bright and dark field substrate and a dark field black background patch, the size of the dark field black background patch matches with that of the adjustable lens group, and the dark field black background patch is arranged close to or away from the adjustable lens group relatively to the bright and dark field substrate. Preferably, the bright and dark field substrate further has a recessed structure with a white diffuse reflection surface.

Abstract: A wafer structure including a chip substrate and plural inkjet chips is disclosed. The chip substrate is a silicon substrate fabricated by a semiconductor process on a wafer of at least 12 inches. The inkjet chips are formed on the chip substrate by the semiconductor process and diced into the first inkjet chip and the second inkjet chip. Each of the first inkjet chip and the second inkjet chip includes plural ink-drop generators. Each of the ink-drop generators includes a nozzle. A diameter of the nozzle is in a range between 0.5 micrometers and 10 micrometers. A volume of an inkjet drop discharged from the nozzle is in a range between 1 femtoliter and 3 picoliters. The ink-drop generators form plural longitudinal axis array groups having a pitch and form plural horizontal axis array groups having a central stepped pitch equal to 1/600 inches or less.

Abstract: This engine is provided with multiple injectors, and an excess fuel return pipe. The injectors inject fuel from a fuel tank into a combustion chamber. The excess fuel return pipe returns excess fuel from the injectors to the fuel tank. The excess fuel return pipe is provided with multiple injector connecting pipes and multiple linking pipes. The linking pipes are formed from an elastically deformable hose. Each of the multiple injector connecting pipes is connected to the corresponding injector. Each of the multiple linking pipes links together two mutually adjacent injector connecting pipes. Across the multiple linking pipes, pipe connecting units, to which an injector connecting pipe and a linking pipe are connected, are arranged along the same straight line.

Abstract: An unconstrained saddle point of a function is obtained by computing a combination of a first subspace for minimization, and a second subspace for maximization. A combination of a current location including a first and second current location within the first and second subspace is iteratively selected. From the current location, a combination of a step-size including a first and second step-size along a first and second direction of the first and second subspace, is computed. The first and second step-size is to a next first and second location within the first and second subspace. The current location is set to a next location including the next first and second location. The combination of the first and second subspace is according to the next location. The iterations terminate when the next location meets a requirement denoting the unconstrained saddle point. The location indicating the unconstrained saddle point is provided.

Abstract: A white balance adjusting system for a display device includes a control member including a register storing white balance control commands and a preset white balance lookup table. A built-in self-test module is coupled to the control member and configured to store a test pattern. A first storage element is disposed in the display device. An optical sensor is configured to measure brightness and chroma data of the screen according to the test pattern. An external control device is operated by the control member to execute the white balance control commands so that white balance adjustment is implemented according to the preset white balance lookup table and the brightness and the chroma data of the screen, and a corrected white balance lookup table is produced. The corrected white balance lookup table is stored in the first storage element and provided to update the preset white balance lookup table.