Abstract: A single phase brushless motor and a power tool are provided. The single phase brushless motor includes a stator and a rotor. The stator includes a stator core and windings wound around the stator core. The stator core includes a yoke and at least two teeth. The tooth includes a tooth body and a tooth tip. The tooth tip includes first and second pole shoes. The two pole shoes of each tooth are symmetrical about a center line of the tooth body. Each tooth defines a positioning groove facing the rotor between the two pole shoes. Pole shoes of adjacent two of the at least two teeth are spaced apart by a slot opening. A width of the positioning groove is greater than a width of the slot opening. The peak value of the cogging torque of the motor is increased, and the motor has a large startup torque.

Abstract: A single phase permanent magnet motor includes a stator. The stator includes a stator core and windings. The stator core includes a ring portion, tooth bodies extending radially from the ring portion, and a pole shoe extending from a distal end to two circumferential sides of each tooth body. Each pole shoe defines a positioning slot. A center of each positioning slot is offset from a center of symmetry of one adjacent tooth body so that a torque fluctuation of an output torque of the single phase permanent magnet motor during operation is less than 50%. As a result, the motor vibration and noise are small.

Abstract: A single phase permanent magnet motor includes a stator core, windings, and a permanent magnet rotor. The stator core includes an end portion and two spaced arm portions each including a connecting arm and a pole claw. Each pole claw has a long pole tip and a short pole tip, and forms a pole surface. The long pole tip of each pole claw corresponds to the short pole tip of the other pole claw with a slot opening formed there between. The slot opening causes the arc pole surface to be discontinued along a circumferential direction, and the arc pole surface is recessed inwardly to form a startup groove.

Abstract: A stator core includes an end portion, a first pole arm, and a second pole arm. The first pole arm includes two first connecting arms extending from the end portion and spaced from each other, and two first pole claws respectively formed at ends of the first connecting arms. The first pole claws are spaced from each other with an opening formed there between. The second pole arm includes two second connecting arms axially stacked to the two first connecting arms respectively and two second pole claws respectively formed at distal ends of the two second connecting arms. The two second connecting arms are connected with each other.

Abstract: A single phase permanent magnet motor and a method for making the same are provided. The method includes the steps of: configuring a stator core, wherein the stator core comprises a first ring portion, tooth bodies, and a pole shoe extending from each tooth body, a slot opening is defined between each two adjacent pole shoes, at least one pole shoe includes a main portion, a connecting portion and an easily bendable tip, the easily bendable tip is bent relative to the main portion about the connecting portion; winding a stator winding around the stator core; and bending the easily bendable tip about the connecting portion to narrow the slot opening. The present invention can change the size of the slot opening, thus more rapidly finishing the winding of the stator winding and enhancing the efficiency of the motor fabrication.

Abstract: Embodiments of the present invention disclose a resource allocation method, a transmission method, and apparatuses. The resource allocation method comprises: sending a scheduling instruction, wherein the scheduling instruction is used to instruct a user equipment to prepare for transmission; determining an available carrier in an unlicensed spectrum; and sending a resource allocation message in response to that an available carrier exists, wherein the resource allocation message is used to instruct to allocate the available carrier to the transmission of the user equipment. According to the method and apparatus of the embodiments of the present invention, after an available carrier is determined, a resource allocation message is sent again to explicitly inform a user equipment of the available transmission resource, thereby avoiding the problem of resource unavailability and/or resource waste caused by the unpredictability of whether an unlicensed spectrum is available.

Abstract: A single phase permanent magnet motor includes a stator and a rotor. The stator includes a stator core and a stator winding. The stator core includes an outer yoke, teeth extending inwardly from the outer yoke, and pole shoes extending from inner ends of the teeth. The rotor is received in a space cooperatively defined by the pole shoes. The rotor includes circumferentially arranged permanent magnetic poles. An outer circumferential surface of the permanent magnetic poles is concentric with an inner circumferential surface of the pole shoes, such that a uniform air gap is formed between the pole shoes and magnetic poles. The single phase permanent magnet motor forms the uniform air gap, which reduces the vibration and noise. The pole shoes form invisible positioning slots, which avoids the negative effect of the positioning slots to the thickness of the air gap and reduces the startup dead point.

Abstract: A single phase permanent magnet motor includes a stator core, windings wound around the stator core, and a permanent magnet rotor rotatable relative to the stator core. The stator core includes an end portion and a pole arm extending from the end portion. The pole arm includes two connecting arms spaced from each other and pole claws respectively formed at distal ends of the connecting arms. The two pole claws define a space for receiving a rotor therein. The pole claws surround the space and form an arc pole surface. The arc pole surface has a first axial portion continuous along a circumference of the arc pole surface and a second axial portion being discontinuous along a circumferential direction of the arc pole surface.

Abstract: A single phase permanent magnet motor includes a stator core, windings wound around the stator core, and a permanent magnet rotor. The stator core includes an end portion and two spaced arm portions. Each arm portion includes a connecting arm connected to the end portion and a pole claw formed at a distal end of the connecting arm. The two pole claws define a space for receiving the rotor. The pole claws surround the space and form an arc pole surface. The arc pole surface is recessed to form a startup groove located at a central axis of the pole claw. The two pole claws are spaced apart to form two slot openings there between. A line connecting the two slot openings is orthogonal to the central axis of the pole claw.

Abstract: Embodiments described herein describe a power supply configured to provide power to an output load via a power supply transformer. The power supply includes a controller configured to operate in a configuration state and an operating state. During the configuration state, the controller receives a configuration signal from a sense circuit coupled to the controller and selects one of a plurality of operating modes from the configuration signal. During the operating state, the controller controls a switch coupled to the transformer based on the selected operating mode and a sense signal received from the sense circuit representative of the power provided to the output load by the power supply. When the switch is closed, current flows from a power source through the transformer, and when the switch is open, current is prevented from flowing from the power source through the transformer.

Abstract: A wafer level package includes a wafer, a lead disposed of the wafer for connecting the wafer to an electrical circuit, and a core disposed of the lead. In some embodiments, the lead disposed of the wafer is a copper pillar, and the core is plated onto the copper pillar. In some embodiments, the core is polymer screen-plated onto the lead. In some embodiments, the core extends between at least approximately thirty-five micrometers (35 ?m) and fifty micrometers (50 ?m) from the lead. In some embodiments, the core covers between at least approximately one-third (?) and one-half (½) of the surface area of the lead. In some embodiments, the core comprises a stud-shape extending from the lead. In some embodiments, the core extends perpendicularly across the lead. In some embodiments, the core extends longitudinally along the lead. Further, a portion of the core can extend perpendicularly from a longitudinal core.

Abstract: Embodiments of the present application disclose a method for determining channel occupancy, including: determining whether clear channel assessment CCA information of a channel sent by a user equipment UE is received; and determining, according to whether the CCA information sent by the UE is received, whether the UE occupies the channel. The present application further discloses an apparatus for determining channel occupancy. By means of the method and apparatus for determining channel occupancy in the embodiments of the present application, a peer device, such as a base station, in communication with the UE can know whether the UE occupies a channel, thus guaranteeing subsequent right decisions.

Abstract: Techniques are disclosed to determine data quality issues in data processing jobs. The data processing job is received, the data processing job specifying one or more processing steps designed based on one or more data schemas and further specifies one or more desired quality metrics to measure at the one or more processing steps. One or more state machines are provided, that are generated based on the quality metrics and on the data schemas. Input data to the data process job are processed using the one or more state machines, in order to generate output data and a set of data quality records characterizing a set of data quality issues identified during the execution of the data processing job.

Abstract: Techniques are disclosed to determine data quality issues in data processing jobs. The data processing job is received, the data processing job specifying one or more processing steps designed based on one or more data schemas and further specifies one or more desired quality metrics to measure at the one or more processing steps. One or more state machines are provided, that are generated based on the quality metrics and on the data schemas. Input data to the data process job are processed using the one or more state machines, in order to generate output data and a set of data quality records characterizing a set of data quality issues identified during the execution of the data processing job.

Abstract: An LDMOS (Laterally-Diffused Metal Oxide Semiconductor) device has a substrate, which includes a first doped region, a second doped region, and a shallow trench isolation (STI) region disposed in the second doped region. The first doped region and the second doped region are adjacent and have different conductivity types. The device also has a gate structure disposed on the substrate; the gate structure substantially does not overlap the second doped region.

Abstract: A method of manufacturing a semiconductor device includes providing a semiconductor substrate. The semiconductor substrate includes a dummy gate structure formed thereon and an offset spacer formed on a sidewall of the dummy gate structure. The method further includes removing the dummy gate structure to form a gate trench, forming a high-k dielectric layer on the bottom and the sidewall of the gate trench, and forming a cover layer over the high-k dielectric layer. The cover layer has a thickness that is greater at the corners of the bottom of the gate trench than in the middle region of the bottom of the gate trench.

Abstract: An apparatus and a system are provided to proxy one or more media signals between at least one local client device and at least one remote client device. For instance, the apparatus can include a first network interface, a rate controller and media transcoder, and a second network interface. The first network interface receives a plurality of media signals over a first communication network, where the plurality of media signals is encoded into at least one codec format. The rate controller and media transcoder transcodes one or more of the plurality of media signals into a different codec format based on channel and processing capabilities associated with one or more local client devices and one or more control messages. The second network interface transmits the one or more of the transcoded plurality of media signals to a respective plurality of remote client devices over a second communication network.

Abstract: An IP multimedia gateway (IMG) receives content sharing service profiles generated by a service manager for communication devices that are coupled to the IMG. Content and/or content information that is received for communication to a first device, is communicated to other devices in response to a request. Content sharing profiles comprise permissions, group members, user preferences, device capabilities and security profiles. Content streams communicated to the first device may be shared with a second device based on the profiles. The second device may share additional streams with the first device. The first device or other devices may communicate the request. The content may be received from a service manager network device. The IMG and a communication device that may display the content may be integrated in a set-top-box or digital TV. Login access is enabled to devices for requesting content. Cooperation with other IMGs may enable discovery and/or content communication.

Abstract: A system for reducing maintenance frequency for bolts and nuts of a wind turbine comprises a plurality of fastening units, a PC data collector, a server and a terminal. The fastening unit has a bolt sequentially penetrates through a lower spacer, a sensor, an upper spacer, a wind turbine parts, a threaded ring, and a washer, and then a nut is engaged and tightly fastened on the bolt. With the fastening units, the system applied to the wind turbine is configured to create a double nut locking system thereby maintaining a preload tension force of the bolt in a safety operation range. Also, through the monitoring system including the sensor connected to the terminal through the PLC data collector and the server, a user can receive the real-time monitoring data of the preload tension force of the bolt to maintain and repair the wind turbine efficiently thereby preventing accidents.

Abstract: Provided are a computer program product, system, and method for limiting the rendering of instances of recursive elements in view output. A schema provides a definition of elements, wherein at least one of the elements comprises a recursive element of a recursive data type, wherein the recursive data type allows for instances of the recursive element to include instances of that same recursive data type at different levels in a hierarchy. A condition is received for terminating recursion for the recursive element. A view is generated for the schema including information on the condition for terminating the recursion, wherein the processing of the view causes a parser to chunk instances of the recursive element in schema data in response to the condition indicating to terminate recursion at the level of the instance of the recursive element being processed.