Hai-Feng
Hai Feng Jin, Daejeon-Si KR
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20150249388 | SWITCHING APPARATUS AND CONTROL METHOD THEREOF - Disclosed are a switching apparatus including an internal circuit using an inductive element and a control method thereof. The switching apparatus includes a switch that regulates a current of the inductive element, and a signal control circuit that arithmetically calculates a turn-off time point of the switch by using a monitoring voltage corresponding to the current of the inductive element, a sampling voltage of the monitoring voltage, and a reference voltage corresponding to a target average current of the inductive element, and controls the switch. | 09-03-2015 |
Hai Feng Jin, Yuseong-Gu KR
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20150340945 | SIGNAL CONTROL CIRCUIT AND SWITCHING APPARATUS - A signal control circuit and a switching apparatus are provided. The switching apparatus includes: a switch for controlling a current flowing through an inductive element; a monitoring node connected with the switch; and a signal control circuit, connected with the monitoring node and a reference voltage, for turning on/off the switch, wherein the signal control circuit includes an integrator for generating a comparison voltage by using a monitoring voltage of the monitoring node and the reference voltage, wherein the integrator includes: a resistor unit; a capacitor unit; and an auto-calibrator for receiving at least one selection signal and determining at least one of a resistance of the resistor unit and a capacitance of the capacitor unit, during a power-up period, and allowing a peak value of the comparison voltage to fall within a target range. | 11-26-2015 |
Hai Feng Li, Beijing CN
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20100082671 | Joining Tables in Multiple Heterogeneous Distributed Databases - A method for joining tables in multiple heterogeneous distributed databases implemented by at least two data sources accessible to a federal database server over a network includes: transmitting from the federated database server a sub-command to a first of the data sources responsive to the federated database server receiving a data query; retrieving, with the federated database server, block data from the first data source related to the data query using block fetching according to the sub-command; transmitting, with the federated database server, at least a portion of the block data to a second of the data sources together with an instruction for the second data source to perform a join operation on the portion of the block data and a data table stored by the second data source related to the query; and retrieving a result of the join operation with the federated database server. | 04-01-2010 |
20110246479 | Creating Indexes for Databases - An index is created for a database by selecting at least one column of a database table as a basis to create the index, generating at least one index of a tree structure according to the at least one column, where a pointer stored in a leaf node of the at least one index is null. In an example embodiment, a value to a pointer is stored in a leaf node according to an intermediate result in response to the intermediate result being generated, where the pointer stored in the leaf node points to a data page storing the intermediate result. The created index can be reused and the intermediate result can be effectively used, such that the efficiency of database operation is improved. | 10-06-2011 |
Hai Feng Shi, Shenzhen CN
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20150280509 | ELECTRIC MOTOR - An electric motor has a stator, a rotor rotatable with respect to the stator, motor windings, a connection plate electrically connected to the motor windings, and a power lead for connecting the motor to a power source. The power lead is connected to the connection plate by an electrical connection and by a separate mechanical connection. The mechanical connection protects the electrical connection from vibration or movement which may otherwise break the electrical connection. | 10-01-2015 |
20150307123 | Housing Assembly for an Electric Motor - A housing assembly has a housing having an open end. A plurality of magnets are fixed to an inner surface of the housing. A magnet holder supports the magnets against movement in the axial and circumferential directions. A cover is mounted in the magnet holder for fixing the magnets in the radial direction. The cover is resiliently deformed when assembled to the magnet holder and magnets, and abuts and resiliently urges the magnets towards the inner surface of the housing. | 10-29-2015 |
20150326099 | Brush Assembly - An electric power steering assembly includes a motor which includes a brush assembly. The brush assembly includes a brush base, a plurality of brush units and a plurality of fixing units for fixing the brush units to the brush base. The brush unit includes a brush, a guide rail and a spring. The rail includes two guiding arms, a closed end interconnecting the guiding arms and wings extending from free ends of the guiding arms. Grooves in the brush receive the guiding arms. The fixing unit includes a first fixture and a second fixture. The closed end of the guide rail engages the first fixture. The second fixture includes two columns spaced from each other. Each column defines a slot in a top end. Protrusions extend from a side of each slot to lock the wings in the slots. | 11-12-2015 |
Hai Feng Shi, Tianjin CN
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20150147569 | THERMO-REGULATED FIBER AND PREPARATION METHOD THEREOF - The present invention provides a thermo-regulated fiber and a preparation method thereof by using a new polymeric phase-change material and adopting a new fiber preparation method, and the resulting thermo-regulated fiber has good thermo-regulating properties and a good thermal stability. The thermo-regulated fiber has a composite structure, and the cross-sectional structure is an sea-island type or a concentric sheath/core type, characterised in that the polymeric phase-change material is a polyethylene glycol n-alkyl ether (structural formula: H(OCH | 05-28-2015 |
20150203733 | PREPARATION METHOD OF POLYMERIC PHASE-CHANGE MATERIAL - The invention relates to a preparation method of a polymeric phase-change material, comprising: using 1, 2 or 3 of (meth)acrylate poly(ethylene glycol) n-alkyl ether ester as a raw material, wherein the (meth)acrylate poly(ethylene glycol) n-alkyl ether ester has a structural general formula of CH | 07-23-2015 |
Hai Feng Wang, Beijing CN
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20140239639 | CONTROLLING WIND TURBINE - The present invention relates to a method and apparatus for controlling a wind turbine. The method includes: dividing a plurality of wind turbines into at least one group based on a similarity in status information of the plurality of wind turbines; in response to having detected a fault in a first wind turbine of the plurality of wind turbines, searching a group to which the first wind turbine belongs for a second wind turbine matching status information of the first wind turbine; and controlling the first wind turbine based on parameters from the second wind turbine. | 08-28-2014 |
20140244188 | FORECASTING OUTPUT POWER OF WIND TURBINE IN WIND FARM - A method and apparatus for forecasting output power of wind turbine in a wind farm. The present invention provides a method for forecasting output power of a wind turbine in a wind farm, including: generating a corrected data set based on environmental data collected from at least one sensor in the wind farm; correcting a weather forecasting model by using the corrected data set; obtaining a forecast value of wind information at the wind turbine based on the corrected weather forecasting model; and forecasting the output power of the wind turbine based on the forecast value and a power forecasting model. | 08-28-2014 |
20150213364 | PREDICTING POLLUTION FORMATION ON INSULATOR STRUCTURES OF POWER GRIDS - A method and a device for predicting insulator pollution grade includes acquiring prediction data affecting the insulator pollution grade; acquiring current pollution status of the insulator; predicting the insulator pollution grade based on the prediction data, the current pollution status and an insulator pollution grade calculating model, wherein the insulator pollution grade calculating model at least comprises an initial pollution status variable of the insulator, and a pollutant accumulation prediction and a pollutant reduction prediction based on the initial pollution status variable, at least one of the accumulation prediction and the reduction prediction being associated with the prediction data, and the initial pollution status variable being associated with the current pollution status. | 07-30-2015 |
20150276981 | METHOD AND APPARATUS FOR LIGHTNING FORECAST - The present invention proposes a lightning forecast method, comprising: identifying a Targeted Weather of SDA carrier (TWLC) based on radar reflectivity data; forecasting a future TWLC state based on the identified TWLC; building or updating an SDA model based on SDA observation data and detected TWLC state-related data; and calculating the probability of producing SDA in the forecasted future TWLC according to the SDA model. | 10-01-2015 |
20150293262 | METHOD AND APPARATUS FOR LIGHTNING FORECAST - The present invention proposes a lightning forecast method, comprising: identifying a Targeted Weather of SDA carrier (TWLC) based on radar reflectivity data; forecasting a future TWLC state based on the identified TWLC; building or updating an SDA model based on SDA observation data and detected TWLC state-related data; and calculating the probability of producing SDA in the forecasted future TWLC according to the SDA model. | 10-15-2015 |
Hai Feng Wu, Beijing CN
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20140148685 | METHOD AND APPARATUS FOR NAVIGATING CT SCAN WITH A MARKER - A method for a CT scan of a body part, wherein a marker is positioned on the body part. The method comprises: positioning a marker on the body part; performing a scout scan of the area which contains the body part, to acquire a scout image; detecting the marker in the scout image to acquire position information of the marker; and using the position information to navigate the CT scan. | 05-29-2014 |
20150139384 | METHOD AND APPARATUS FOR REDUCING RADIATION FROM CT MEASUREMENT OF RESPIRATORY CYCLES AND CT SCANNER - A method for reducing radiation from CT measurement of respiratory cycles and a corresponding CT scanner. The method includes: determining a lying direction of a patient to be measured; and setting a tube position for a first respiratory cycle measurement of the patient according to the lying direction. | 05-21-2015 |
Hai-Feng Li, Shenzhen CN
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20110216922 | SILICON CONDENSER MICROPHONE - Disclosed is a silicon condenser microphone including a backplate having a plurality of perforations therethrough, a diaphragm opposed from the backplate for forming a capacitor. The diaphragm includes a first part and a second part received in the first part, the second part being capable of vibrating relative to the backplate. The first part is connected to the ground and the second part is connected to a bias voltage. | 09-08-2011 |
Hai-Feng Wang, Kaohsiung TW
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20150132568 | POLYMERIC POSITIVE TEMPERATURE COEFFICIENT THERMISTOR - A polymeric positive temperature coefficient thermistor comprises a positive temperature coefficient complex material as a middle layer and an electrode covering a surface of the positive temperature coefficient complex material. The positive temperature coefficient complex material comprises a crystalline polymer, a titanium carbide nanoparticle powder, and a titanium carbide microparticle powder. A mass ratio of the titanium carbide nanoparticle powder to the titanium carbide microparticle powder ranges from 0.1:9.9 to 1.0:9.90. The titanium carbide nanoparticle powder comprises titanium carbide nanoparticles and a particle size of the titanium carbide nanoparticles is from 1 to 50 nm. The titanium carbide microparticle powder comprises titanium carbide microparticles and a particle size of the titanium carbide microparticles is from 0.1 to 10 μm. | 05-14-2015 |
Hai-Feng Wang, Shanghai CN
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20130153822 | BLUE PHASE LIQUID CRYSTAL COMPOSITION, BLUE PHASE LIQUID CRYSTAL MATERIAL AND METHOD FOR MANUFACTURING THEREOF - A blue phase liquid crystal material includes a liquid crystal host, a chiral reagent and a stable polymer. The chiral reagent is R811. The stable polymer is formed by photo-polymerizing a first monomer and a second monomer. The first monomer is 2-ethylhexyl acrylate (2-EHA), and the second monomer is 2-methyl-1,4-bis{4-[3(-acrylate)propoxyl]benzoicacid}phenylester (PTPTP). The blue phase liquid crystal material has a blue phase temperature range widened to an extremely low temperature. A blue phase liquid crystal composition and a method for manufacturing the blue phase liquid crystal material by using the blue phase liquid crystal composition are also provided. | 06-20-2013 |
Hai-Feng Wu, Shenzhen City CN
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20130017699 | POWER SUPPLY DEVICE AND POWER SUPPLY SYSTEMAANM LI; HAN-YUAACI Tu-ChengAACO TWAAGP LI; HAN-YU Tu-Cheng TWAANM ZHANG; NINGAACI Shenzhen CityAACO CNAAGP ZHANG; NING Shenzhen City CNAANM WU; HAI-FENGAACI Shenzhen CityAACO CNAAGP WU; HAI-FENG Shenzhen City CN - A power supply device includes a power supply module, a main bus-bar module, an assistant bus-bar module, and a plurality of connectors. The power supply module, for supplying a direct current voltage, includes a positive terminal and a negative terminal for outputting the current voltage. The main bus-bar module includes a first main bus-bar and a second main bus-bar. The first main bus-bar is electronically connected to the positive terminal. The second main bus-bar is electronically connected to the negative terminal. The assistant bus-bar module includes a first assistant bus-bar electronically connected to the second main bus-bar, and a second assistant bus-bar electronically connected to the first main bus-bar. Each connector includes a first pin and a second pin. The first pin is inserted and electronically connected to the first assistant bus-bar. The second pin is inserted and electronically connected to the second assistant bus-bar. | 01-17-2013 |
20130039003 | SERVER RACK ASSEMBLY - A server rack assembly receives a plurality of servers. The server rack assembly includes a server rack, a bus-bar, a power supply and a plurality of fan modules. The server rack includes a stand column. The server rack defines a plurality of server spaces for receiving the plurality of servers. A bus-bar is mounted to the server rack and includes a plurality of connectors aligned in a first direction substantially parallel to the stand column. The bus-bar is adapted to electronically plug to the plurality of servers. The power supply device is electronically connected to the bus-bar. The power supply device is adapted to output direct current to the bus-bar. Each of the plurality of fan modules is adapted to dissipate heat from three of the plurality of server spaces. | 02-14-2013 |
20130039004 | SERVER RACK ASSEMBLY - A server rack assembly receives a number of servers. The server rack assembly includes a server rack, a bus-bar, and a power supply. The server rack includes a stand column. The server rack defines a plurality of server spaces for receiving the plurality of servers. A bus-bar is mounted to the server rack and includes a plurality of connectors aligned in a first direction substantially parallel to the stand column. The bus-bar is adapted to electronically plug to the plurality of servers. The power supply device is pluggable to one of the plurality of connectors of the bus-bar along a second direction substantially perpendicular to the stand column The power supply device is adapted to output direct current to the bus-bar. | 02-14-2013 |
20130039005 | SERVER RACK ASSEMBLY - A server rack assembly receives a plurality of servers. The server rack assembly includes a server rack, a bus-bar, and a power supply. The server rack includes a stand column. The server rack defines a plurality of server spaces for receiving the plurality of servers. A bus-bar is mounted to the server rack and includes a plurality of connectors aligned in a first direction substantially parallel to the stand column. The bus-bar is adapted to electronically plug to the plurality of servers. The power supply device is electronically connected to one of the plurality of connectors of the bus-bar. The power supply device is adapted to output direct current to the bus-bar. The power supply is approximately twice the height of each of the plurality of server spaces. | 02-14-2013 |
20130134845 | MOUNTING APPARATUS FOR DATA STORAGE DEVICE - A mounting apparatus includes a bracket, a cage, and a hand. The bracket includes two sidewalls and two positioning posts extending from the two sidewalls. Each sidewall defines a first cutout. The cage secures a data storage device and defines two sliding slots and a positioning hole. The handle includes a positioning portion and two mounting portions. Each positioning post is received in each sliding slot. The handle is slidable relative to the cage between a locked position and an unlocked position. When the handle is in the locked position, the positioning portion is engaged in the positioning hole, and each mounting portion is engaged in the first cutout. When the handle is in the unlocked position, the positioning portion is disengaged from the positioning hole, the mounting portion is disengaged from the first cutout, and the two positioning post are movable in the two sliding slots. | 05-30-2013 |
Hai-Feng Zhang, Shenzhen CN
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20130329538 | DEVICE AND METHOD FOR TESTING DISC PLAYER - A test method includes the steps of providing a test optical disc stored data that is reproduced to display a plurality of images having a plurality of single colors, the plurality of single colors comprising a plurality of first single colors; providing a first timer that begins counting for a first predetermined time when the disc player begins to read the test optical disc; displaying test images according to the video signals generated by the disc player that read the test optical disc. The test method further includes the steps of detecting the color of the test images, determining whether the currently detected color is substantially the same as one of the first single colors after the first timer has timed out; determining that the read performance of the disc player is unsatisfactory if the currently detected color is substantially the same as one of first single colors. | 12-12-2013 |
20140060288 | TESTING DEVICE AND STORAGE MEDIUM WITH TESTING FUNCTION, AND TESTING METHOD - A testing device for testing timbre of a disc player is provided. The testing device may be contained in a computer, or test equipment. The testing device is electronically connected to the disc player for receiving audio signals from the disc player, and analyzing the audio signals to obtain at least one test value for determining the timbre of the disc player. A testing method applied in the testing device is also provided. | 03-06-2014 |
Hai-Feng Zhang, Shenzhen City CN
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20090136051 | SYSTEM AND METHOD FOR MODULATING AUDIO EFFECTS OF SPEAKERS IN A SOUND SYSTEM - A system for modulating audio effects of speakers is provided. The system includes a selecting module, a playing module, a recording module, a time delay computing module and a modulating module. Based on these modules, the system is capable of determining a time difference and a pitch for each of the speakers, and modulating the time difference and the pitch for each of the speakers to a desired time difference and a desired pitch, so as to ensure that simultaneous sounds from each speaker arrive at a microphone at about the same time and with the same audio pitch. A related method is also provided. | 05-28-2009 |