Abstract: A motor controller for pulse heating of a power battery. The motor controller includes an inverter circuit, the inverter circuit includes three switching transistor bridge arms, two ends of each switching transistor bridge arm are respectively configured to connect to positive and negative electrodes of the power battery through a direct current bus, and bridge arm midpoints of the three switching transistor bridge arms are separately configured to connect to a three-phase winding of a motor. The bridge arm midpoints of the three switching transistor bridge arms are configured to output a three-phase current, the three-phase current is used to generate a pulse alternating current on the direct current bus, and the pulse alternating current is used to heat the power battery. A current of each phase of the three-phase current is a unipolar triangular wave, and a sum of the three-phase current is zero.

Abstract: A self-locking tuning assembly includes a tuning screw and a cover plate. The tuning screw includes a head portion and a rod portion. The head portion is provided with a first threaded portion and a second threaded portion. The cover plate defines an opening adapted to the tuning screw. The opening includes a first hole portion and a second hole portion that are communicated. The head portion is at least partially located in the first hole portion. The rod portion is at least partially located in the second hole portion. A hole diameter of the second hole portion is smaller than a hole diameter of the first hole portion. The self-locking tuning assembly improves its self-locking force and installation consistency while maintaining the structural strength thereof.

Abstract: Wireless communication methods for multicast/broadcast service (MBS) and apparatuses are disclosed. The method performed by a user equipment (UE) includes when the UE is interested in one or more multicast services/sessions or receives the one or more of multicast services/sessions, the UE is in a connected state or is indicated to enter the connected state, receiving, by the UE being in the connected state or being indicated to enter the connected state, a multicast configuration via a dedicated signaling, entering, by the UE, an inactive state when the UE receives the multicast configuration, and receiving, by the UE in the inactive state, the one or more of multicast services/sessions.

Abstract: A display device is disposed. The display device includes a first backlight module and a display panel, and the display panel is disposed on the backlight module. The first backlight module has an opening, and the opening passes through the first backlight module. The first backlight module includes a substrate, a plurality of light emitting units, and at least one light blocking structure. The light blocking structure is disposed on the substrate and surrounds the opening. The light emitting units are disposed on the substrate, and the light emitting units are disposed on a side of the light blocking structure away from the opening.

Abstract: An adapter cable can include a receptacle connector including contact pins as defined for a peripheral component interconnect express (PCIe) connector; edge connectors having edge pins as defined for a PCIe add-in card (AIC); and connections connecting the receptacle connector to the edge connectors, each connection connecting one of the contact pins to one of the edge pins.

Abstract: The embodiments of the present disclosure provide a light-emitting substrate and a manufacturing method thereof, a backlight module, and a display device, and the light-emitting substrate includes a base substrate, a light-emitting device and a reflective layer on the base substrate. The reflective layer has an opening, and the light-emitting device is in the opening and spaced apart from the reflective layer; the reflective layer includes an edge part close to the light-emitting device and defining the opening, and a body part on a side of the edge part away from the light-emitting device, wherein the edge part has a plurality of reflective edges facing the light-emitting device and defining the opening, and a plurality of reflective included angles formed by the reflective edges interesting with each other, and the reflective included angles include included angles that are not completely identical in shape or angle.

Abstract: A flight control method and device, and an aircraft are provided. The method includes: in a flight state, in response to a collision between an aircraft and an object, generating a trigger signal for characterizing an abnormality; and in response to the trigger signal, reducing rotation speeds of all motors in a power system of the aircraft to reduce a flight altitude of the aircraft, and adjusting an attitude of the aircraft to a normal attitude. It can reduce the occurrence of abnormal situations in which an aircraft flips over after colliding with an obstacle and finally firmly attached to the obstacle.

Abstract: An electro-optic modulator is provided, including: a light splitting element; a light combining element; a first waveguide arm and a second waveguide arm that are arranged in parallel and are connected between the light splitting element and the light combining element; and a first ground electrode, a first signal electrode, a second ground electrode, a second signal electrode, and a third ground electrode that are arranged in sequence, where the first waveguide arm is located between the first ground electrode and the first signal electrode, the second waveguide arm is located between the second ground electrode and the second signal electrode, and the first signal electrode and the second signal electrode are configured to receive differential signals. A technical solution of an embodiment of the present disclosure can improve working performance of the electro-optic modulator.

Abstract: A power tool system includes: a switch; a motor connected to the switch; a control module connected to the motor; a communication module of a power tool connected to the control module; a power supply module of the power tool connected to the control module; and a battery pack configured to supply power to the power supply module of the power tool. The battery pack comprises a communication module. The control module is configured to: receive a conduction signal of the switch; control the motor to operate according to the conduction signal; detect an operation time of the motor; control the communication module of the power tool and the communication module of the battery pack to establish communication therebetween, in response to the operation time being a first predetermined time, enabling the power tool to obtain a state of the battery pack.

Abstract: A backlight module includes a light guide plate and a prismatic reflective film. The prismatic reflective film is disposed on a surface of the light guide plate opposite to a light exit surface of the light guide plate. A surface of the reflective film proximate to the light guide plate is provided with a plurality of protruding structures thereon. The plurality of protruding structures extending in a first direction. Tops of at least two of the plurality of protruding structures are uneven.

Abstract: A vehicle license plate recognition method includes: performing the vehicle license plate recognition on the obtained fisheye image to obtain the vehicle plate region; in response to the vehicle license plate region being in the non-reference direction, enlarging the vehicle license plate region based on all pixels of the vehicle license plate region to obtain the deformed image of the vehicle license plate; the resolution of the deformed image of the vehicle license plate being higher than the resolution of the vehicle license plate region; reference direction correction is performed on the deformed image of the vehicle license plate to obtain the to-be-detected image; and recognizing the to-be-detected image to obtain the output character corresponding to the vehicle license plate region.

Abstract: A communication device may be used in a communication system. The communication device includes a set of antenna elements arranged in an antenna aperture. The communication device determines a transformation matrix T based on a coupling matrix C, which includes coupling coefficients between each antenna element in the set of antenna elements. By multiplying the transformation matrix T with a first beamforming matrix f1 a second beamforming matrix f2 is obtained. Based on the second beamforming matrix f2 the communication device transmits a communication signal x via the set of antenna elements in a wireless channel.

Abstract: A display panel and a display device are provided. The display panel includes: a plurality of first pixel units, a plurality of second pixel units, a plurality of third pixel units and a plurality of first data lines. An effective light-emitting area of the first pixel unit is larger than an effective light-emitting area of the second pixel unit, and larger than an effective light-emitting area of the third pixel unit; an orthographic projection of the first data line on the base substrate is not overlapped with an orthographic projection of any one of the first electrode of the first pixel unit, the first electrode of the second pixel unit, and the first electrode of the third pixel unit on the base substrate.

Abstract: An electronic device for encoding a picture is described. The electronic device includes a processor and instructions stored in memory that are in electronic communication with the processor. The instructions are executable to encode a gradual temporal layer access (GTLA) picture. The instructions are further executable to send the GTLA picture.

Abstract: In an adjustment mechanism, a linkage rod is hinged to a linkage end of a first connecting rod and a linkage end of a second connecting rod. When the adjustment mechanism receives an external force, the linkage rod can generate a movement tendency, such that connecting components can be quickly unfolded or folded. An armrest is further provided. The adjustment mechanism is arranged as an adjustment module between a fixed vertical board and a movable vertical board of the armrest to unfold or fold the armrest. When the width of the armrest changes, the total length of the first connecting rod and the second connecting rod can be selectively matched according to the change in the width of the armrest, and the adjustment mechanism can hence be applicable to armrests of various width specifications.

Abstract: A light-emitting diode and a light-emitting device are provided. The light-emitting diode includes a semiconductor stack layer and a first electrode. The semiconductor stack layer has a light output surface and a back surface opposite to each other. On the back surface, the semiconductor stack layer has a first mesa exposing a first semiconductor layer thereof and a second mesa adjacent to the first mesa. The first electrode formed on the back surface of the semiconductor stack layer at least surrounds a portion of the second mesa, and the first electrode surrounding a portion of the second mesa extends toward the light output surface. The first electrode has a first chamfer portion, and the second mesa has a second chamfer portion. The first electrode and the second mesa have a minimum distance L, and a radius of curvature of the second chamfer portion is greater than or equal to ?{square root over (2)}L.

Abstract: A pixel driving circuit includes a first transistor, a second transistor, and a first capacitor. The first transistor is configured to receive a data signal and drive a light emitting element based on the data signal. The first transistor includes a first gate terminal, a first source terminal, and a first drain terminal. The second transistor includes a second gate terminal receiving a first bias signal from a first bias source, a second source terminal coupled to the first transistor, and a second drain terminal coupled to the light emitting element. The first capacitor is disposed between the first gate terminal and the second gate terminal. The first transistor and the second transistor are different types of transistors.

Abstract: A display method used includes: obtaining a plurality of illuminating data corresponding to the plurality of backlight units, the plurality of illuminating data are configured for the plurality of backlight units to display a frame within a predetermined time period. The predetermined time period is divided to a plurality of sub-periods. Two of the sub-periods are not equal. The illuminating data includes sub-illuminating data corresponding to the sub-periods, and the sub-illuminating data correspond to data voltages of different voltage levels. When each of the plurality of the sub-periods begins, inputting a scan signal into the scan line to allow the plurality of backlight units to receive the plurality of sub-illuminating data.

Abstract: Disclosed is an assembly optimization method, system, and medium based on Industrial Internet of Things (IIoT).

Abstract: The present invention provides a call system, a host device, a computer program product, a mobile terminal, and a cloud server. The call system (10) comprises a host device (11), a cloud server (12), and a plurality of clients (13). The host device (11) is configured to receive a first voice signal sent by a plurality of terminal devices (14), receive a second voice signal forwarded by the cloud server (12) and sent by the plurality of clients (13), perform audio mixing processing on the received first voice signal and the second voice signal, respectively generate a mixed audio signal corresponding to one of the terminal devices (14), send the mixed audio signal to the terminal device (14), generate a mixed audio signal corresponding to one of the clients (13), and forward the mixed audio signal to the client (13) by means of the cloud server (12). The call system may allow a user who is not within a coverage range of the wireless internal call system to access the call system for communication.