19th week of 2011 patent applcation highlights part 18 |
Patent application number | Title | Published |
20110109192 | ELECTRIC MACHINE, IN PARTICULAR COMMUTATOR MACHINE - The invention relates to an electric machine, in particular a commutator machine ( | 2011-05-12 |
20110109193 | Motor device - There is provided a motor device. The motor device includes a sleeve including an axial hole, a shaft inserted in the axial hole and rotatably installed thereto, a rotor case coupled with the shaft, rotating together with the shaft, and supporting a disc disposed thereupon, and a balancer including one or more races formed inside the rotor case and guiding a plurality of balls for correcting imbalance caused when the disc rotates. | 2011-05-12 |
20110109194 | TWO-DIMENSIONAL MICROMECHANICAL ACTUATOR WITH MULTIPLE-PLANE COMB ELECTRODES - A micro-electro-mechanical actuator consists of a first semiconductor layer comprising a movable element with comb electrodes, a support element with inner and outer comb electrodes and a stationary element with comb electrodes, an electrical insulation layer, and a second semiconductor layer with a cavity to allow out-of-plane rotation of the movable and support elements. The movable element is mounted to the support element by a first pair of torsional hinges whereas the support element is mounted to the stationary element by a second pair of torsional hinges such that the actuator is in gimbaled structure. Inner comb electrodes of the support element interdigitate with comb electrodes of the movable element, and outer comb electrodes of the support element interdigitate with comb electrodes of the stationary element in the same plane defined by the first semiconductor layer to form in-plane comb-drive actuators. The in-plane comb-drive actuator may be controlled to generate two-dimensional oscillation of the movable element about the two axes defined by the torsional hinges. The second semiconductor layer may further comprise comb electrodes which interdigitate vertically with outer comb electrodes of support element to form vertical comb-drive actuators. Combing the in-plane and the vertical comb-drive actuators, the movable element is controllable to perform two-dimensional raster scan motion. | 2011-05-12 |
20110109195 | VIBRATION POWER GENERATOR, VIBRATION POWER GENERATING DEVICE AND COMMUNICATION DEVICE HAVING VIBRATION POWER GENERATING DEVICE MOUNTED THEREON - Generating efficiency of a vibration power generating device, which generates power by vibration in the biaxial direction, is improved. The vibration power generating device is provided with: a first substrate ( | 2011-05-12 |
20110109196 | PLATE WAVE ELEMENT AND ELECTRONIC EQUIPMENT USING SAME - A plate wave element includes a piezoelectric body, a comb-shaped electrode disposed on an upper surface of the piezoelectric body, and a medium layer disposed on the upper surface of the piezoelectric body so as to cover the comb-shaped electrode. The comb-shaped electrode excites a Lamb wave as a main wave. The medium layer has a frequency temperature characteristic opposite to that of the piezoelectric body. The plate wave element has a preferable frequency temperature characteristic. | 2011-05-12 |
20110109197 | DRIVE DEVICE - A drive device includes a stator; a rotatably provided drive member; a piezoelectric element, which is nipped between the stator and the drive member in a tangential line direction of a rotation locus circle of the drive member, and expands and contracts in the tangential line direction at an expansion speed at the time of the expansion and a contraction speed at the time of the contraction, respectively, the expansion speed and the contraction speed different from each other; and a rotor provided concentrically with the drive member to touch the drive member with a pressure. | 2011-05-12 |
20110109198 | PHASED ARRAY BUCKLING ACTUATOR - A harmonic buckling actuator is comprised of numerous buckling units engaged to a rotational track/gear. Each buckling unit includes two input translational actuators. One end of each input actuator is constrained to rotate about a rotational joint that is rigidly attached to a common ground. The other end of each input actuator is constrained to move with the other actuator of the same buckling unit along a single output axis via another rotational joint that is the output of the buckling unit. The inactivated, unforced configuration of each buckling unit is such that the input actuators are nearly collinear with the line segment connecting the unit's grounded rotational joints. This line segment is parallel to the output axis of the track/gear. The buckling units are arrayed around the track/gear such that their outputs are spatially phased within the groves of the track/gear. Harmonic activation of the buckling units generates torque on the track/gear about its output axis. The hollow section of the track/gear encompasses a gear reducer such as a planetary gear box, cyclo-drive, or harmonic drive. The track/gear is coupled to the slow speed shaft of the reducer. The buckling unit supports are rigidly coupled to each other and to the gear box of the reducer. The high speed shaft is the output shaft of the entire harmonic buckling actuator. | 2011-05-12 |
20110109199 | ELECTROMECHANICAL TRANSDUCER AND METHOD FOR MANUFACTURING THE SAME - Disclosed is an electromechanical transducer and the method for manufacturing the same, which can detect or control deformation and vibration of a structure and flow of fluids by applying controlling forces. The electromechanical transducer of the present invention comprises a base substrate to which initial stress is applied; an electro-active material layer attached on the base substrate; and electrodes installed on the top and bottom side of the electro-active material layer for actuating the electro-active material layer, the base substrate and the electro-active material layer which is deformed when initial stress is removed from the base substrate so that the base substrate and the electro-active material layer have curvatures. | 2011-05-12 |
20110109200 | TWO- OR MULTI-LAYER FERRELECTRET AND METHOD FOR THE PRODUCTION THEREOF - The present invention relates to a method for producing two- or multi-layer ferroelectrets with defined voids, with the exception of three-layer ferroelectrets with a perforated middle layer made of PTFE between two FEP layers, involving, introducing one or more clearances into at least one surface side of a polymer film element by means of a method of removal, applying a first covering to the surface side of the polymer film element comprising clearances formed in step A), and joining the polymer film element and the covering to form a polymer film composite, the clearances being closed while voids are formed, and to a two- or multi-layer ferroelectret, with the exception of three-layer ferroelectrets with a perforated middle layer made of PTFE between two FFP layers, in particular produced by this method. The invention also relates to a piezoelectric element containing a ferroelectret multi-layer composite according to the invention. | 2011-05-12 |
20110109201 | Manual control device with power generation function and remote control device with power generation function - A manual control device with a power generation function includes a manual input unit of a touch sensor type, a control unit that detects a direction input in the manual input unit and performs a control operation according to the direction, a power generation unit that is formed of piezoelectric material for power generation and arranged to a bottom side of the manual input unit, a charge unit that charges electric power from the power generation unit, and a power supply unit that supplies the electric power from the charge unit to the control unit. The operation start control unit supplies an operation instruction to the power supply unit after predetermined delay time since the electric power supply from the power generation unit to the charge unit is detected. | 2011-05-12 |
20110109202 | AUTONOMOUS PIEZOELECTRIC DEVICE FOR GENERATING AN ELECTRICAL VOLTAGE - A piezoelectric device for generating an electrical voltage, comprises a vibrating plate having a portion integral with a fixed support and at least one free end capable of moving under the effect of a mechanical pulse, and at least one piezoelectric element attached to one face of the plate so as to deform under the effect of the oscillations of the plate that result from said mechanical pulse, thus generating an electrical voltage. | 2011-05-12 |
20110109203 | FLEXIBLE PIEZOELECTRIC STRUCTURES AND METHOD OF MAKING SAME - A flexible piezoelectric structure and a method of making the structure are disclosed. A piezoelectric film having a relatively high piezoelectric coefficient is attached to a flexible substrate. The piezoelectric film is fabricated on a different substrate and transferred to the flexible substrate by contact. | 2011-05-12 |
20110109204 | Piezoelectric Element and Audio Device - A piezoelectric element including a plurality of stacked piezoelectric sheets, wherein the stretching axis of a first piezoelectric sheet and the stretching axis of a second piezoelectric sheet of the plurality of piezoelectric sheets are oriented in different directions from each other. Preferably, the stretching axis of the first piezoelectric sheet and the stretching axis of the second piezoelectric sheet are intersected at an angle of 90 degrees. | 2011-05-12 |
20110109205 | VIBRATION DEVICE AND ELECTRONIC DEVICE - A vibration device includes: a vibrating reed including a base having a notch, a plurality of vibrating arms extending from the base, and each including an arm section, a weight section, and a groove section, and a support section, wherein a mechanical resonant frequency f of the vibrating reed is higher than a thermal relaxation frequency f | 2011-05-12 |
20110109206 | BICYCLE POWER GENERATOR - A bicycle power generator includes a tube which is adapted to be installed in a bottom bracket of a bicycle. The tube has a receiving space defined therein. A plurality of coil stators is annularly disposed in an inner periphery of the receiving space. A rotary shaft axially passes through the tube. The rotary shaft has a plurality of magnets annularly disposed on an outer periphery thereof. The plurality of magnets are intervally alternately arranged in north and south polarities. Each end of the rotary shaft has a threaded portion formed thereon for adapting to threadedly connect with a bicycle crank, such that the rotary shaft rotates with the bicycle crank. When the rotary shaft synchronously rotates with the bicycle crank, the plurality of magnets disposed on the rotary shaft is axially rotated relative to the coil stators such that the coil stators generate electricity. | 2011-05-12 |
20110109207 | Collapsible Food Service System - A food service system is formed using a plurality of units capable of being interlocked together in a variety of customizable configurations. The units of the food service system include a food service bar with buffet pan chillers, a work table, a cashier station, and variety of connecting pieces for linking each of the units together. The food service bar comprises a sneeze guard that protects the food contained within the bar on three sides and can be broken down and folded down and into itself when the bar is being transported or stored. The buffet pan chillers are double sided and configured such that when frozen, may accommodate a shallow food pan on one side and then flipped over to accommodate a deep food pan on the other side while still maintaining the same serving height. Each unit is configured to receive multiple sizes of wheels or casters. | 2011-05-12 |
20110109208 | DOMESTIC APPLIANCE INCLUDING A TREATMENT CHAMBER THAT CAN BE CLOSED BY A DOOR AND A FILLING DEVICE - A household appliance includes a treatment chamber having an opening. The opening of the treatment chamber is configured to be closed by a door. The opening of the treatment chamber is bounded by at least one frame member. An external container is configured to hold at least one of an operating fluid or an operating powder. A filling device is disposed on the at least one frame member and in fluid connection with the external container. The filling device is configured to introduce, in an operating mode of the household appliance, at least one of an operating fluid and an operating powder to the treatment chamber, either treated or untreated. The filling device includes a filling device opening. | 2011-05-12 |
20110109209 | LOCK MECHANISM FOR FIXING A SLIDE BAR IN EITHER OF TWO POSITIONS - A lock mechanism for manually or automatically fixing a slide bar in either of two positions. A lock body has a key barrel adapted to rotate a lock cam in a first rotational direction. A latch is biased in a closed position, the latch being adapted to move to an open position when the lock cam is rotated in the first rotational direction. A slide bar is fixable in a locked position and an unlocked position, wherein the slide bar is biased in the unlocked position. A knob slider is adapted to move the slide bar into the locked position such that the latch moves to the closed position and engages a notch of the slide bar to fix the slide bar in the locked position. A servo motor is adapted to rotate a servo cam in a second rotational direction to move the slide bar into the locked position, and is adapted to rotate the lock cam in the first rotational direction to move the slide bar into the unlocked position. The key barrel is adapted to rotate in the first rotational direction to move the slide bar into the unlocked position. The lock mechanism can be made smaller, more compact, less expensive, have fewer parts, and be easier to manufacture. | 2011-05-12 |
20110109210 | METHOD OF INSERTING BRITTLE MATERIAL IN PLASTIC SHELL AND ELECTRONIC DEVICE HAVING THE PLASTIC SHELL - A method of inserting a brittle material into a plastic shell comprises: a) processing the brittle material, so that the brittle material comprises an embedded portion to be embedded into the plastic shell, an exposed portion to be exposed outside the plastic shell, and a positioning portion between the embedded portion and the exposed portion; b) putting the exposed portion and at least part of the position portion into a fixed mold core of an injection mold, with the brittle material being positioned in the fixed mold core by the positioning portion; and c) injecting molten plastic into the mold to form the plastic shell, in which the embedded portion and at least part of the positioning portion are embedded into the plastic shell with the exposed portion and the remaining or the positioning portion being exposed outside the plastic shell. An electronic device having the above plastic shell is also provided. | 2011-05-12 |
20110109211 | Furniture Product with Power Port Feature - A furniture product is provided comprising a power port disposed on an exterior side surface of the furniture product, for providing regulated and unregulated power for electronic devices disposed external to the furniture product. The power port comprises a variable attenuator providing a regulated power output, a regulated power output cord having a first end connected to the attenuator and a second end extending exterior to the furniture product and an electrical power receptacle provided a first unregulated power output. | 2011-05-12 |
20110109212 | SLIDING MECHANISM AND ELECTRONIC DEVICE HAVING THE SAME - A sliding mechanism comprises a sliding plate, a main plate, a sliding enabling member, a biasing member and a stopping member. The sliding plate has sidewalls and the main plate has peripheral walls corresponding to the sidewalls, respectively. The slide enabling member is coupling the sidewalls to the peripheral walls such that the sliding plate is slid relative to the main plate between closed and open position. The biasing member provides a force for biasing the sliding plate to slide relative to the main body. The stopping member is coupled between the sliding plate and the main plate. When the sliding plate is slid from the open position to the closed position, the stopping member provides a mechanism for the sliding plate to steadily slide relative to the main plate and to firmly stop in the closed position. | 2011-05-12 |
20110109213 | Fiber Tray - A fiber tray for managing and organizing fiber distribution is disclosed. The fiber tray includes a housing and a drawer received in the housing. The housing is secured to an equipment rack. The housing includes inner sides with a glide mechanism extending the length of each inner side. The glide mechanism includes a first end and a second end. The glide mechanism also includes at least one curved path located at one of the first end and the second end. The drawer includes a bottom, a first side, a second side, a front and a back. The first and second sides of the drawer have a pin. The pins extending from the sides of the drawer slide within the glide mechanism to enable the drawer to be retracted, extended or removed from the housing. | 2011-05-12 |
20110109214 | DRAWER ASSEMBLY - A drawer assembly is provided and includes a drawer and a sliding guide rail system for opening and closing the drawer within an article of furniture. A support bracket for supporting the drawer is provided at each side of the drawer. The system includes a fixed rail disposed within each of the support brackets. Each side of the drawer assembly has a first member located at a rear corner of the drawer assembly between the support bracket and the fixed rail, and a second member located at a forward corner of the drawer assembly between the support bracket and the fixed rail, when the drawer is fully closed. The drawer is guided against skewing by engagement at two diagonally opposing corners, of the support bracket and fixed rail through the first member on one side of the drawer and through the second member on the other side of the drawer. | 2011-05-12 |
20110109215 | LIGHTING DEVICE - Disclosed is a lighting device. The lighting device includes:
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20110109216 | LIGHTING DEVICE - Disclosed is a lighting device. The lighting device includes:
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20110109217 | LIGHTING DEVICE - Disclosed is a lighting device. The lighting device includes:
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20110109218 | LED Light Structure with Internal Electronic Circuit - The invention concerns a LED lighting body ( | 2011-05-12 |
20110109219 | LAMP - It is provided a lamp ( | 2011-05-12 |
20110109220 | Intermittent cyclic permanent illuminating LED lamp - The present invention relates to an intermittent cyclic permanent illuminating LED lamp, comprising a radiating substrate, a plurality of chips, a plurality of conducting wires, 4 insulating pieces, 4 sets of positive and negative conducting pieces, 2 fluorescent layers and transparent adhesive tape, wherein 2 insulating pieces are bonded to the front side and back side of the radiating substrate, the insulating pieces are available for bonding of the 4 sets of positive and negative conducting pieces, and the plurality of conducting wires on the front side and back side of the radiating substrate are provided for serial connection with the plurality of chips and the positive pole and negative pole on the two sides to offer the intermittent switching cyclic permanent lighting effect or achieve the industrial application of multi-serial connection all illuminating and multi-color light selection and control effect. | 2011-05-12 |
20110109221 | OXYNITRIDE PHOSPHOR, METHOD OF PREPARING OXYNITRIDE PHOSPHOR, AND WHITE LIGHT EMITTING DEVICE INCLUDING THE OXYNITRIDE PHOSPHOR - An oxynitride phosphor including: a compound represented by Formula 1: | 2011-05-12 |
20110109222 | LIGHT EMITTING DEVICE, AND BACKLIGHT, LIQUID CRYSTAL DISPLAY DEVICE AND ILLUMINATION DEVICE USING THE SAME - A light emitting device | 2011-05-12 |
20110109223 | ORGANIC ELECTROLUMINESCENT COMPOUNDS WITH HIGH EFFICIENCY AND DISPLAY DEVICE USING THE SAME - The present invention relates to an organic electroluminescent compound containing fluorenyl group and a display device using the same, more precisely the organic electroluminescent compound. The organic electroluminescent compound of the present invention is characterized by upgraded excellent EL property compared with the conventional host materials. | 2011-05-12 |
20110109224 | MICROCAVITY PLASMA DEVICES WITH NON-UNIFORM CROSS-SECTION MICROCAVITIES - An embodiment of the invention IS an array of microcavity plasma devices The array includes a first metal film electrode with a plurality of non-uniform cross-section microcavities therein that are encapsulated in oxide A second electrode is a thin metal foil encapsulated in oxide that is bonded to the first electrode A packaging layer contains gas or vapor in the non-uniform cross-section microcavities To make such device, photoresist is patterned to encapsulate the anodized foil or film except on a top surface at desired positions of microcavities A second anodization or electrochemical etching is conducted to form the non-uniform cross-section sidewall microcavities cavities After removing photoresist and metal oxide, a final anodization lines the walls of the microcavities with metal oxide and fully encapsulates the metal electrodes with metal oxide | 2011-05-12 |
20110109225 | Escimer lamp - In an excimer lamp, rare gas and fluorine are enclosed inside a translucent ceramics arc tube. External electrodes are formed on an outer surface of the arc tube. A condition of 2.5+0.5 log(C | 2011-05-12 |
20110109226 | MICROPLASMA DEVICE WITH CAVITY FOR VACUUM ULTRAVIOLET IRRADIATION OF GASES AND METHODS OF MAKING AND USING THE SAME - An illumination device provides light to a flowing gaseous sample. The device includes a structure including a cavity configured to have a microplasma disposed therein. The cavity substantially encircles a cross-section of a channel that is configured to pass the flowing gaseous sample therethrough. The cavity is defined in part by an interior wall of the structure separating the cavity from the channel. The interior wall includes at least one orifice passing therethrough configured to provide to the flowing gaseous sample light generated by the microplasma. At least one electrode is configured to supply energy to the microplasma within the cavity. | 2011-05-12 |
20110109227 | Target Exchange Type Plasma Generating Apparatus - The objective of the present invention is to provide a target exchange type plasma generating apparatus in which the positions of two targets can be adjusted independent of each other. A target exchanging mechanism ( | 2011-05-12 |
20110109228 | System and method for lighting power and control system - Light Emitting Diodes (LEDs) are increasingly used in illumination applications. To control multiple Light Emitting Diodes (LEDs), or any other controllable light source, this document introduces a single-wire multiple-LED power and control system. Specifically, individually controlled LED units are arranged in a series configuration that is driven by a control unit located at the head of the series. Each of the individually controlled LED units may comprise more than one LED that is also individually controllable. The head-end control unit provides both electrical power and control signals down a single wire to drive all of the LED units in the series in a manner that allows each LED unit to be controlled individually or in assigned groups. | 2011-05-12 |
20110109229 | HIGH EFFICIENCY LED LIGHTING - An LED lighting system may include one or more light-emitting diodes and one or more power management modules. Components of the LED lighting system may be selected and arranged, for example, to match a load voltage to an operating voltage. Matching the load voltage to the operating voltage may enable efficient use of power by the LED lighting system. A method of selecting components of the LED lighting system is provided. For example, the components may be selected based on a target luminance and a given operating voltage. The method may be facilitated and/or implemented with a computer. | 2011-05-12 |
20110109230 | Ballast Circuit for LED-Based Lamp Including Power Factor Correction with Protective Isolation - A ballast circuit for a light emitting diode (LED) based lamp including power factor correction with protective isolation. The circuit includes a transformer with electrically isolated windings and a power factor correction circuit that receives no feedback from a secondary winding side of the transformer. An LED-based lamp assembly and a method of driving an LED-based light source are also provided. | 2011-05-12 |
20110109231 | LED CURRENT CONTROL CIRCUIT, CURRENT BALANCER AND DRIVING APPARATUS - An LED current control circuit including a current adjusting unit, a detecting unit, and a current control unit is provided. The current adjusting unit has a current control end coupled to an LED string for determining an amount of current flowing through the LED string according to a current control signal. The detecting unit detects the current control end and determines whether to generate a protecting signal according to a protecting voltage value. The current control unit generates the current control signal to control the amount of current flowing through the LED string of and determines whether to stop the current flowing through the LED string according to the protecting signal. | 2011-05-12 |
20110109232 | LIGHT SENSOR AND LIGHTING DEVICE WITH ADAPTABLE COLOR - Light sensors ( | 2011-05-12 |
20110109233 | MULTI-CHANNEL CURRENT DRIVER - A multi-channel current driver is provided. One of the channels includes a channel switch and a memory-type current mirror. A first end of the channel switch receives a reference current. A master current end of the memory-type current mirror is coupled to a second end of the channel switch. Wherein, a slave current end of the memory-type current mirror outputs a driving current according to the reference current when the channel switch provides the reference current to the memory-type current mirror, and the slave current end of the memory-type current mirror holds the driving current when the channel switch stops the reference current. | 2011-05-12 |
20110109234 | Multi-Color Backlight Control Circuit and Multi-Color Backlight Control Method - The present invention discloses a multi-color backlight control circuit, comprising: a plurality of pins for electrically connecting with a plurality of LED strings of different LED colors; and a voltage supply circuit for receiving an input voltage and supplying a single output voltage to the plurality of LED strings of different LED colors. The present invention also discloses a multi-color backlight control method, comprising: supplying a single output voltage to a plurality of LED strings of different LED colors. | 2011-05-12 |
20110109235 | Expandable and controllable LED lighting strip - An expandable and controllable LED lighting strip is in the form of a transparent long strip having a plurality of LEDs, and includes a flexible printed circuit board with the LEDs spaced thereon by a predetermined distance. The circuit board is coated with a transparent waterproof protective layer and has a male and a female connector provided to two ends thereof, allowing two or more pieces of the LED lighting strips to serially connect end to end. A control chip is packaged on a reverse side of the circuit board for controlling the LEDs on the same circuit board to operate. The LED light strips can be wound into rolls for storage, and can be serially or parallelly connected to one another to form an LED matrix for widely applying to LED signboards, indicating illuminators, lighting curtains and other furniture to provide illumination or create special atmosphere. | 2011-05-12 |
20110109236 | Periodic lighting device - There is presented a detailed electronic method for simulation of a firefly, other insects, or organisms producing bioluminescence and with light radiation functions similar to a real firefly, other insects, or organisms producing bioluminescence. An illuminated artificial firefly, other insects, or organisms producing bioluminescence can be placed on trees and shrubs in landscape, or at home to produce radiation, at night time, and blinking a gradually decaying light. More particularly it relates to a decorative type of device in the form of a firefly, other insects, or organisms producing bioluminescence and with light radiation functions similar to a real firefly, other insects, or organisms producing bioluminescence. The light is simulated by an electronics program that is a part of compact device with the form of a real firefly, other insects, or organisms producing bioluminescence. Short radiation pulses of microsecond-millisecond duration time in violet and ultraviolet range of radiation wavelengths can be utilized for scaring birds or other animals from undesirable or dangerous places of human activity, such as airports, contaminated ponds, wind turbines, electorized fences and antennas. | 2011-05-12 |
20110109237 | EFFICIENT POWER SUPPLY FOR SOLID STATE LIGHTING SYSTEM - Drive circuitry drives a plurality of solid state light emitters coupled between a higher voltage node and a lower voltage node. The drive circuitry includes a switching regulator, such as a buck regulator, having a switch and an inductive element coupled between the switch and the lower voltage node to electrically connect the switch to the lower voltage node. A controller drives the switch in accordance with an output signal produced by the solid state light emitters. Input power supply circuitry supplies an input power supply signal for providing a voltage level at the higher voltage node to operate the solid state light emitters. The input power supply circuitry is configured for supplying the controller with a first power supply signal produced based on the input power supply signal. Operation power supply circuitry is electrically connected to the lower voltage node for supplying the controller with a second power supply signal when the voltage level developed at the lower voltage node is sufficient to support operation of the controller. | 2011-05-12 |
20110109238 | Digital dimming device and digital dimming method - The present invention discloses a digital dimming device and a digital dimming method, for controlling a plurality of light emitting device channels. The method comprises: generating a corresponding plurality of driving signals to control the plurality of light emitting device channels; receiving a PWM input signal having a duty ratio, and phase shifting the PWM input signal to generate multiple PWM output signals with about the same duty ratio as the PWM input signal, but with respectively shifted phases; and enabling or disabling corresponding driving signals by the multiple PWM output signals, respectively. | 2011-05-12 |
20110109239 | ILLUMINATION CONTROL DEVICE - A lighting control device | 2011-05-12 |
20110109240 | LIGHT-EMITTING ELEMENT DRIVE CIRCUIT SYSTEM, AND ELECTRONIC DEVICE - A light-emitting element drive circuit system for driving a light-emitting element includes a current circuit section that drives the light-emitting element at a preset drive current value, and a current value setting section. The current value setting section sets the drive current value so that the drive current value is changed during a preset transition period from a first current value to a second current value that is not equal to the first current value, and changed during a preset transition period from the second current value to a third current value that is not equal to both the first current value and the second current value. | 2011-05-12 |
20110109241 | LED LIGHTING DEVICE AND ILLUMINATING DEVICE - According to one embodiment, an LED lighting device comprises at least one normally-on type switching element, an output generation unit that generates DC output by an on-off operation of the switching element, a semiconductor light emitting element that is lit by the DC output generated by the output generation unit, and a driving control unit that causes the switching element to perform an off operation using a current passed through the semiconductor light emitting element. | 2011-05-12 |
20110109242 | Bulb set structure - A bulb set structure comprises a plug having two guiding pieces to connect with a power source and to assemble with a LED bulb set and a fitter, an orifice to output alternating current, and a power converting unit having one end to electrically connect with the guiding pieces, and having another end to connect with wires of the LED bulb set and the fitter by using the joining segment to convert the alternating current into direct current, and a circuit board is used to rectify the alternating current to output direct current to emit LED bulb set and to transmit the alternating current to the fitter. | 2011-05-12 |
20110109243 | CIRCUIT AND METHOD OF DRIVING LIGHT EMITTING DIODES, AND LIGHT EMITTING DIODE SYSTEM HAVING THE SAME - A light-emitting-diode driving circuit includes a current driving circuit configured to control current signals flowing through light-emitting-diode strings in response to a first signal that includes information of a light-emitting-diode current, a dynamic headroom controller configured to generate a third control signal that changes according to a change of the current signals flowing through the light-emitting-diode strings based on voltage signals of first terminals of each of the light-emitting-diode strings and a second control signal that includes the information of the light-emitting-diode current, and a power supply circuit configured to generate a light-emitting-diode driving voltage that changes in response to the third control signal, and provide the light-emitting-diode driving voltage to second terminals of each of the light-emitting-diode strings. | 2011-05-12 |
20110109244 | ARCHITECTURE FOR HIGH POWER FACTOR AND LOW HARMONIC DISTORTION LED LIGHTING - Exemplary apparatus and associated methods involve a bypass module for modulating conductivity of one or more current paths to provide a first set of LEDs that are conducting near minimum output illumination and having a larger conduction angle than that of a second set of LEDs that conduct at a maximum output illumination. In an illustrative example, the conductivity of a bypass path in parallel with a portion of the second set of LEDs may be reduced while the AC input excitation is above a predetermined threshold voltage or current. The bypass path may be operated to provide a reduced effective turn-on voltage while the input excitation is below the predetermined threshold. For a given maximum output illumination at a maximum input excitation, the bypass module may control current through selected LEDs to construct an input current waveform with substantially improved power factor and reduced harmonic distortion. | 2011-05-12 |
20110109245 | CIRCUITS AND METHODS FOR DRIVING LIGHT SOURCES - In one embodiment, a driving circuit includes an AC/DC converter which converts an AC voltage to a DC voltage and a DC/DC linear regulator which regulates a current through, e.g., an LED light source, according to a first current reference if a monitoring signal indicating the DC voltage is within a predetermined range, and regulates the current according to a second current reference less than the first current reference if the monitoring signal is beyond the predetermined range. In another embodiment, a controller controlling power to an LED light source turns on a first plurality of LEDs and turns off a second plurality of LEDs if a monitoring signal indicative of a DC voltage received by the LED light source is within a predetermined range, and turns on both first and second plurality of LEDs if the monitoring signal is beyond the predetermined range. | 2011-05-12 |
20110109246 | CIRCUIT CONFIGURATION AND METHOD FOR OPERATING AT LEAST ONE FIRST AND ONE SECOND LED - A circuit configuration may include an operational amplifier having a plus and a minus input and an output; and a current sensing resistor, whereby the voltage drop across the resistor is coupled to the minus input; a first transistor having a control electrode, a reference electrode and a working electrode, the working-reference electrode path of which is coupled in series to a first and second connection for a first LED between a connection for a supply voltage and the reference potential; a second transistor having a control electrode, a reference electrode and a working electrode, the working-reference electrode path of which is coupled in series to a first and second connection for a second LED between a connection for a supply voltage and the reference potential; a first switch and a second switch coupled in series between the output and the control electrode of the first and second transistor, respectively. | 2011-05-12 |
20110109247 | SWITCHED MODE POWER CONVERTER AND METHOD OF OPERATING THE SAME - A switched mode power converter is disclosed, together with a method for operating the same. The power converter is adapted to be operable in the boundary conduction mode, and operation is interruptible in the absence of any load requirement. | 2011-05-12 |
20110109248 | DC/DC CONVERTER WITH MULTIPLE OUTPUTS - Embodiments of the invention provided a DC/DC converter. The DC/DC converter includes a transformer, a first controller and a first switch. The transformer has a primary winding coupled to a power source, a first secondary winding for providing a first output voltage and a second secondary winding for providing a second output voltage. The first controller is coupled to the primary winding for controlling input power to the primary winding to regulate the first output voltage. The switch is coupled to the second secondary winding and for regulating the second output voltage. The first switch is controlled by a pulse modulation signal. A current flows through the second secondary winding if the pulse modulation signal is in the first state, and the current flowing through the second secondary winding remains cut-off if the pulse modulation signal is in the second state. | 2011-05-12 |
20110109249 | DIMMABLE LED LAMP AND DIMMABLE LED LIGHTING APPARATUS - A dimmable light-emitting diode (LED) lamp and a dimmable LED lighting apparatus thereof are provided. The dimmable LED lamp includes a bridge rectifier, a toggle detector, a sustain voltage supply circuit, a counter, an LED light source, and an LED lighting driver. The bridge rectifier receives a source alternating current (AC) voltage through a wall switch and provides a rectified direct current (DC) voltage. The toggle detector monitors a toggle action of the wall switch. The sustain voltage supply circuit provides a sustain voltage. The counter receives the sustain voltage for operation. Moreover, the counter stores and provides an counting value that changes when the toggle detector detects the toggle action. The LED lighting driver converts the rectified DC voltage to a constant current to drive the LED light source. The LED lighting driver also provides multi-level dimming to the LED light source according to the counting value. | 2011-05-12 |
20110109250 | METHOD AND COMPUTER IMPLEMENTED APPARATUS FOR LIGHTING EXPERIENCE TRANSLATION - The invention relates to the translation of lighting experience, particularly to the translation of scripts for describing lighting experiences and provided for controlling of lighting devices in a lighting system. An embodiment of the invention provides a method for lighting experience translation by means of a computer, comprising the acts of—receiving an effect based script, which describes one or more light effects of the lighting experience on one or more locations in a view in an environment (S | 2011-05-12 |
20110109251 | LIGHT-EMITTING ELEMENT DRIVING CIRCUIT SYSTEM - A light-emitting element driving circuit system is provided in which a plurality of current paths, in each of which a light-emitting element and a switching element which is controlled to be switched ON and OFF for causing light to be emitted from the light-emitting element are connected in series, are placed in parallel to each other, wherein an ON time of each switching element is adjusted based on a light-emission period which is a period in which the light-emitting elements are caused to emit light in a circulating manner, such that a number of switching operations of each switching element is reduced. | 2011-05-12 |
20110109252 | LINEAR SCALE, LINEAR MOTOR, AND LINEAR MOTOR CONTROLLER - Disclosed is a linear scale for obtaining a distance from a reference point. A scale detection mechanism is adapted to output waveform signals of the same phase. Also the scale detection mechanism corresponds to a magnetic flux density generated by magnetic bodies of a scale element. The scale detection mechanism may be sensors. The sensors are arranged at even intervals corresponding to a scale length of the scale element. The sensors are adapted to output sine-wave signals having the same phase to continuously detect the scale element in a movement direction of the scale element. The scale element has opposite ends each has the same polarity and configured such that an output voltage of the single sensor detecting the end of the scale element is reduced to one-half of an output voltage of the single sensor detecting the remaining portion of the scale element. | 2011-05-12 |
20110109253 | Motor Controlling Circuit for Multiple Control Modes - A motor driving circuit has a motor operated with a forward operation, a reverse operation, an inactivating operation, and/or a brake operation under a constant current mode, a constant voltage mode, and/or a full swing mode. The motor driving circuit also prevents usage of multiple operational amplifiers and errors brought by the usage of the multiple operational amplifiers with simple circuit designs. | 2011-05-12 |
20110109254 | METHOD AND DEVICE FOR CONTROLLING A MOTOR - A method controls a motor, especially for opening and closing a door. The motor is controlled by a pulse width-modulated switching signal that is divided into a specifiable number of pulse width-modulated control signals for actuating a bridge circuit to a corresponding number of functional channels. The functional channels are switched off independently from each other by at least one or more switch-off signals on at least one switching circuit of a number of independent switching circuits corresponding to the number of functional channels. | 2011-05-12 |
20110109255 | SYSTEM AND METHOD FOR DETERMINING THE START POSITION OF A MOTOR - A system and method for determining the start position of a motor. According to an embodiment, a voltage pulse signal may be generated across a pair of windings in a motor. A current response signal will be generated and based upon the position of the motor, the response signal will be greater in one pulse signal polarity as opposed to an opposite pulse signal polarity. The response signal may be compared for s specific duration of time or until a specific integration threshold has been reached. Further, the response signal may be converted into a digital signal such that a sigma-delta circuit may smooth out glitches more easily. In this manner, the position of the motor may be determined to within 60 electrical degrees during a startup. | 2011-05-12 |
20110109256 | FIBER OPTICALLY COMMUNICATED MOTOR TEMPERATURE AND POSITION SIGNALS - Methods and apparatus are provided for a controlling an electric motor that is at least partially disposed within a motor housing. The rotational speed and position of the electric motor are sensed, and a temperature of the electric motor is sensed. The sensor signals are converted to optical signals and are propagated in a fiber optic cable. The electric motor is controlled based, at least in part, on the propagated optical signals. | 2011-05-12 |
20110109257 | ELECTRIC SERVO-PRESS, AND CONTROL DEVICE AND CONTROL METHOD FOR ELECTRIC SERVO PRESS - Provided is a low-cost control device for an electric servo press, which is excellent in operability and operation efficiency, capable of abruptly stopping a servomotor in a safe and reliable manner within a short time period in response to an abrupt stop command while avoiding hard actuation of a mechanical brake, reliably and quickly stopping the servomotor even in the case where runaway of the servomotor or the like occurs. An electric servo press performs switching to rotation stop control for a servomotor according to an abrupt stop motion based on an abrupt stop command signal to perform brake actuation so as to cause a mechanical brake to actually start braking and to forcibly interrupt rotational drive power to the servomotor at a scheduled stop time at which the servomotor is stopped according to the abrupt stop motion. As a result, even if an abrupt stop request is issued in the case where runaway or the like occurs due to abnormality of the servomotor, a control system therefor, or the like, the rotation of the servomotor may be reliably and quickly stopped. | 2011-05-12 |
20110109258 | 2 SPEED 2/4-POLE PSC/PSC MOTOR WITH INDEPENDENT MAIN WINDINGS AND SHARED AUXILIARY WINDING - A PSC/PSC motor for 2-pole operation and 4-pole operation. The motor uses an independent 2-pole main winding and an independent 4-pole main winding. An auxiliary winding includes an independent 2-pole auxiliary winding, an independent 4-pole auxiliary winding, and a shared auxiliary winding used in both the 2-pole operation and the 4-pole operation. | 2011-05-12 |
20110109259 | PORTABLE TERMINAL - A portable terminal includes a cover movably coupled to a body, a first solar cell on the body; and a second solar cell on the cover. The first and second solar cells may be oriented in the same or different directions. When oriented in the same direction, both solar cells may receive light when the cover is opened relative to the body. The solar cells output voltages for simultaneously charging a battery when the cover is opened and when voltages from the first and second solar cells exceed a predetermined reference voltage. | 2011-05-12 |
20110109260 | SUN SENT POWER SYSTEMS - Sun sent power systems comprises a solar battery recharging assembly for children's electric toy vehicles (such as electric scooters, electric riding power vehicles and other such electrically powered outdoor riding toys). The solar battery recharging assembly comprises an array of photovoltaic panels having a plurality of solar cells to convert sun light into DC power to operate the toy vehicle. Sun sent power systems may be used to power and recharge virtually any outdoor electric toy substantially eliminating the need for users to have to plug the toys into standard electric outlets. The solar powering means of the photovoltaic panels enable the power toys to be continuously recharged while in use, thereby extending the duration of playtime and battery life. The item may be OEM installed or may be comprise an add-on converter kit for removable installment to an existing toy vehicle. | 2011-05-12 |
20110109261 | Multi-Power Charger and Battery Backup System - A multi-power charger comprises an internal battery, receptacles for connecting one or more external power sources, and output receptacles for connecting to an electronic device. A voltage selection circuit determines an operating voltage of the first device and selects a power supply source to supply the operating voltage the device. The power supply source may be the internal battery, one of the external power sources, or both. The operating voltage is delivered to the device via the output receptacle. | 2011-05-12 |
20110109262 | WIRELESS ENERGY TRANSFER ANTENNAS AND ENERGY CHARGING SYSTEMS - A resonant wireless energy transfer system comprises first and second antennas made up of dual parallel wire helixes wherein the wires are terminated by short wires. Voltage controlled variable capacitors are connected into the antennas to permit progressive variation between folded dipole and normal dipole operating modes such that optimum energy transfer can be achieved between the antennas over a wide range of antenna separation distances. A vehicle battery charging system using the above-described antennas is provided including an installation which allows purchase of battery charging power by members of the general public. In-vehicle energy transfer for sensors, computers, cell phones and the like is also described. | 2011-05-12 |
20110109263 | RESONANCE TYPE NON-CONTACT CHARGING APPARATUS - A resonance type non-contact charging system is disclosed that includes a resonance system. The resonance system has a primary side resonance coil, a secondary side resonance coil, a power converting section having a DC/DC converter, and a battery. The charging system has a controlling section that controls the DC/DC converter. The controlling section controls the duty cycle of the DC/DC converter such that the input impedance of the resonance system at the resonant frequency and the output impedance of a high-frequency power source match each other. | 2011-05-12 |
20110109264 | APPARATUS AND METHOD FOR PROVIDING CHARGE IN BATTERY CHARGING SYSTEM - Disclosed is a charging apparatus and method of a battery charging system, including a power supply unit supplying power for charging a battery of a terminal if the position of a charging coil of the battery charging system matches the position of a charging coil of the terminal, a sensing unit obtaining the sensing information for determining the position of the terminal, a position detecting unit determining the position of the terminal on the basis of the sensing information obtained by the sensing unit, a charging coil coupled inductively with the charging coil of the terminal to generate power for charging the battery of the terminal, a coil moving unit moving the charging coil to the position of the terminal, and a control unit controlling a battery charging operation by the charging coil of the terminal and the charging coil moved by the coil moving unit. | 2011-05-12 |
20110109265 | RECHARGEABLE BATTERY POWERED PORTABLE ELECTRONIC DEVICE - There is provided a planar inductive battery charging system designed to enable electronic devices to be recharged. The system includes a planar charging module having a charging surface on which a device to be recharged is placed. Within the charging module and parallel to the charging surface is at least one and preferably an array of primary windings that couple energy inductively to a secondary winding formed in the device to be recharged. The invention also provides secondary modules that allow the system to be used with conventional electronic devices not formed with secondary windings. | 2011-05-12 |
20110109266 | METHOD AND SYSTEM FOR CO-OPERATIVE CHARGING OF ELECTRIC VEHICLES - A method and system provide for the cooperative charging of electric vehicles. By using power line communications, chargers of the electric vehicles who are serviced by the same distribution transformer can form self-contained local area networks due to the nature of power line communications (PLCs). Alternatively, or in addition to the PLCs, other communication networks, such as the Internet and local area networks, may be used as part of the communications infrastructure for the chargers. After the chargers of the electric vehicles are coupled to one another through power line communications or traditional communications networks, they can form a logical token ring network. According to this token ring network, a predetermined number of tokens can be assigned within the token ring network for permitting chargers with tokens to charge respective electric vehicles while chargers without tokens must wait until they receive a token to initiate charging. | 2011-05-12 |
20110109267 | CHARGING SYSTEM FOR TRANSPORTATION SYSTEM WITHOUT CONTACT WIRE - The present invention provides a charging system for a transportation system without a contact wire having a configuration in which a power storage device of a vehicle is charged by a charging device provided on the ground when the vehicle equipped with the power storage device stops at a station on a track. In the present invention, the track includes a first track and a second track, the station includes a station controller which detects stopping of the vehicle, the charging device includes a first power line for supplying power to a vehicle on the first track and a second power line for supplying power to a vehicle on the second track, the first power line and the second power line each include switching means for controlling flow of the power supplied from the charging device, and the station controller controls the switching means, thereby causing the charging device to charge any of the vehicle on the first track and the vehicle on the second track. | 2011-05-12 |
20110109268 | BATTERY VOLTAGE BALANCE APPARATUS AND BATTERY CHARGE APPARATUS - A battery voltage balance apparatus including a balance determining unit and a converting unit is provided. The balance determining unit is coupled to a plurality of battery units and determines whether to perform a battery voltage balance process according to battery voltages of each battery units. The converting unit has an energy storage circuit and is coupled to the battery units. In the battery voltage balance process, the converting unit stores energy in the energy storage circuit and selectively charging at least one of the battery units by the energy storage circuit, so that the voltage differences between any two of the battery units are reduced to be lower than a predetermined value or a predetermined percentage. | 2011-05-12 |
20110109269 | CIRCUIT AND METHOD FOR BALANCING BATTERY CELLS - Embodiments of the invention provided circuits and methods for balancing battery cells. According to a first embodiment, a cell balancing circuit includes an auxiliary current path for controlling a conductance status of a shunt path. According to a second embodiment, a cell balancing circuit utilizes a total voltage of multiple neighboring cells in a battery pack to generate a current. Based on the current, a voltage drop is generated to conduct a shunt path corresponding to one cell of the neighboring cells. According to a third embodiment, a cell balancing circuit utilizes a total voltage of multiple neighboring cells in a battery pack to generate a current. Based on the current, a voltage drop is generated to conduct a shunt path corresponding to one cell of the neighboring cells. The cell balancing circuit can turn on multiple internal switches at the same time to balance multiple neighboring cells simultaneously. | 2011-05-12 |
20110109270 | INTER-MODULE VOLTAGE BALANCE CORRECTING CIRCUIT OF A POWER STORAGE SYSTEM - Provided is an inter-module voltage balance correcting circuit of a power storage system including a plurality of storage modules connected in series, each of the storage modules including a plurality of storage cells connected in series. The inter-module voltage balance correcting circuit includes a resistance voltage dividing circuit (R | 2011-05-12 |
20110109271 | NON-ISOLATED CHARGER WITH BI-POLAR INPUTS - Systems and methods are provided for an uninterruptable power supply having a positive DC bus, a neutral DC bus, and a negative DC bus. The uninterruptible power supply includes a battery charger circuit having an inductor, a first charger output, and a second charger output. A first switch connected to a first end of the inductor is configured to couple the positive DC bus with the first charger output. A second switch connected to a second end of the inductor is configured to couple the negative DC bus with the inductor. The neutral DC bus can be coupled to the second charger output. The battery charger circuit can be configured to draw power from at least one of the positive DC bus and the negative DC bus to charge a battery coupled to the first charger output and the second charger output. | 2011-05-12 |
20110109272 | MOBILE ELECTRONIC DEVICE AND POWER MANAGEMENT METHOD OF BATTERY MODULE THEREOF - This invention relates to a mobile electronic device and a power management method of a battery module thereof. The mobile electronic device includes a battery module, a charging/discharging module, and a control module. The charging/discharging module is coupled with the battery module. The control module is coupled with the battery module and the charging/discharging module. When the power supply is coupled with the mobile electronic device and the system time is not within a maintenance period, the control module controls the charging/discharging module to maintain capacity of the battery module within a first capacity range. When the power supply is coupled with the mobile electronic device and the system time is within the maintenance period, the control module controls the charging/discharging module to maintain the capacity of the battery module within a second capacity range. | 2011-05-12 |
20110109273 | AVAILABLE CHARGING / DISCHARGING CURRENT CALCULATION METHOD AND POWER SUPPLY DEVICE - A method includes steps of dividing resistance R into a physical and chemical resistances R | 2011-05-12 |
20110109274 | CHARGE AND DISCHARGE CONTROL APPARATUS AND CHARGE AND DISCHARGE CONTROL METHOD FOR SECONDARY BATTERY - A charge and discharge control apparatus for a secondary battery, which uses feedforward control and feedback control in combination to execute charge and discharge control over the secondary battery, includes: a feedforward control unit that executes the feedforward control; a feedback control unit that executes the feedback control; and a control mode changing unit that changes a control mode between the feedforward control and the feedback control. The feedforward control unit controls at least one of a charging electric power and a discharging electric power on the basis of a predetermined permissible electric power value. When the permissible electric power value is lower than or equal to a predetermined value, the control mode changing unit prohibits the feedforward control, and changes the control mode so as to control at least one of the charging electric power and the discharging electric power through the feedback control. | 2011-05-12 |
20110109275 | CHARGING CIRCUIT, AND BATTERY PACK AND CHARGING SYSTEM EQUIPPED WITH SAME - A charging circuit includes: a battery connection terminal for connection to a secondary battery; a power supply connection terminal for receiving, from a power supply unit which outputs a current for charging the secondary battery, the current; first and second switching elements, connected in series between the power supply connection terminal and the battery connection terminal, and turning on and off the current flowing from the power supply connection terminal to the battery connection terminal; a current detection unit for detecting the current flowing from the power supply connection terminal to the battery connection terminal; a charging control unit for supplying a pulse-shape charging current to the battery connection terminal by repeating a process of turning on the first and second switching elements, a process of turning on the first switching element and turning off the second switching element, and a process of turning off the first switching element and turning on the second switching element; and a malfunction judgment unit for judging that at least one of the first and second switching elements is malfunctioning in an interval in which only one of the first and second switching elements is turned on by the charging control unit when the current detected by the current detection unit exceeds a current threshold value set so as to enable judgment as to whether current is flowing to the battery connection terminal. | 2011-05-12 |
20110109276 | METHOD AND DEVICE FOR DETERMINING THE START OF A CHARGING PROCESS FOR AN ENERGY STORAGE DEVICE IN AN ELECTRIC VEHICLE - A method and a device are provided for determining the start of a charging process for an energy storage device in a vehicle, such as an electric vehicle. The method includes, but is not limited to determining at least one first parameter that indicates that a passenger is about to exit the electric vehicle. In addition, a first time t | 2011-05-12 |
20110109277 | Electric circuit for generating electric power - An electric circuit is described for generating electric power. In this circuit, an asynchronous generator includes a stator and a rotor. On the stator side, the asynchronous generator is coupled to a power grid. The rotor current flowing to the rotor of the asynchronous generator can be measured. A control device is designed such that, in case of a fault in the power grid, the stator current flowing to the stator of the asynchronous generator is calculated from the measured rotor current as a function of parameters of the asynchronous generator. | 2011-05-12 |
20110109278 | VEHICLE-USE POWER GENERATION CONTROL APPARATUS AND VEHICLE-USE POWER GENERATION CONTROL SYSTEM - The vehicle-use power generation control apparatus includes a first section to control an excitation current of a vehicle generator driven by a vehicle engine such that a power generation voltage of the vehicle generator is kept at a first set value, a second section to perform gradual excitation control in order to gradually increase the excitation current, a third section configured to inhibit the gradual excitation control when the power generation voltage falls below a second set value lower than the first set value while the gradual excitation control is performed, a fourth section to detect a rotational speed of the vehicle engine or the vehicle generator, a fifth section to determine a limit value of the excitation current based on the detected rotational speed, and a sixth section configured to limit the excitation current below the limit value when the power generation voltage falls below the second set value. | 2011-05-12 |
20110109279 | METHOD FOR DETERMINING A ROTOR POSITION OF AN ELECTRICAL GENERATOR IN A WIND TURBINE - A method for determining a rotor position of an electrical generator in a wind turbine is described comprising determining a voltage of the electrical generator, determining a rotor position angle estimate based on the voltage of the electrical generator, determining a subsequent rotor position angle estimate through a feedback loop, based on a combination of the voltage of the electrical generator and the rotor position angle estimate. Further, a method to real time track encoder health is described comprising determining the phase angle of a reference voltage, determining the angle difference between the rotor position and the reference voltage, and determining the differentiation of the angle difference. | 2011-05-12 |
20110109280 | Automatic Self-Adjusting Voltage Controller - An apparatus ( | 2011-05-12 |
20110109281 | POWER FACTOR CORRECTION TYPE SWITCHING POWER SUPPLY UNIT - A multiplier multiplies a current signal of an Iy generator and a voltage signal from a Vx generator corresponding to a divided voltage value of an output voltage of a full-wave rectifier. The result of the multiplication is output as a current reference signal to the non-inversion input terminal of a current error amplifier. A current peak waveform generator circuit generates an envelope waveform of peak values of an inductor current. An Iz generator, when the envelope waveform exceeds a first threshold value smaller than a third threshold value set in an overcurrent protection circuit, curbs the inductor current by adjusting the size of a current signal output to the multiplier, and reducing the current reference signal. | 2011-05-12 |
20110109282 | ACTIVE DAMPING CIRCUIT FOR ELECTRIC CHOPPER CIRCUIT - A snubber circuit for a chopper circuit has at least one chopper transistor with terminals connected to a first line and to a second line, the first line being at a power supply potential and the second line being at ground potential. The snubber circuit has a capacitive element and a charging diode for charging the capacitive element. The charging diode and the capacitive element are connected in series to each other and together they are connected in parallel with the chopper transistor. The snubber circuit has an inductive element having a first end connected to a connection point situated between the charging diode and the capacitive element, and a second end connected to one of the lines. | 2011-05-12 |
20110109283 | SYSTEM AND METHOD FOR CONTROLLING A CONVERTER - A system and method for controlling a converter. One embodiment provides the cyclic actuation of a first switching element, used for applying an input voltage to an inductive storage element. A second switching element is used as a first rectifier element in a rectifier arrangement, in a step-up converter. An actuating circuit is provided for the first and second switching elements. | 2011-05-12 |
20110109284 | SYSTEM AND METHOD FOR EQUALIZING THE SMALL SIGNAL RESPONSE OF VARIABLE PHASE VOLTAGE REGULATORS - A control circuit for a variable phase voltage regulator comprises an error amplifier to generate a difference signal based on a difference between a reference voltage and a signal representative of a voltage at an output node of the variable phase voltage regulator. The control circuit also comprises a variable phase compensator to amplify the difference signal to produce a modified difference signal to compensate for effects of varying the number of active phases in the variable phase voltage regulator, wherein the amplification is proportional to a ratio of total number of phases in the variable phase voltage regulator to number of active phases in the variable phase voltage regulator. | 2011-05-12 |
20110109285 | OPERATION OF A THREE LEVEL CONVERTER - A method of operating a three level converter includes controlling the output voltage of the converter when a DC link voltage of the three level converter is lower than one-half of a rated DC link voltage of the converter by, for each leg of the converter, alternately connecting an output terminal of the leg to the positive terminal or the negative terminal of the DC link. When the DC link voltage is at least one-half of the rated DC link voltage, the method includes controlling the output voltage of the converter by, for each leg, selectively connecting the output terminal of the converter to the positive terminal, the negative terminal, or a mid-point of the DC link. | 2011-05-12 |
20110109286 | Power switching circuit - This invention relates to a power switching circuit, and, the switching circuit has very wide bandwidth, better capability to deal with bigger power and better capability to increase chances to impedance-match with loading. The invention has also revealed a backward current decoupler which can be used to drive a loading so that a better capability to impedance-match with loading can be achieved. | 2011-05-12 |
20110109287 | SEMICONDUCTOR PACKAGE AND DC-DC CONVERTER - According to one embodiment, a semiconductor package includes a chip, a plurality of bumps, a source frame, a drain frame, and a mold member. The chip has a lateral transistor formed inside the chip and has a top source electrode exposed on a first surface of the chip and a top drain electrode exposed on the first surface of the chip. The plurality of bumps are mounted on each of the top source electrode and the top drain electrode. The source frame is connected to the top source electrode through the bumps. The drain frame is connected to the top drain electrode through the bumps. The mold member embeds at least a part of each of the chip, the bumps, the source frame and the drain frame. | 2011-05-12 |
20110109288 | POWER CONVERTING CIRCUIT - A power converting circuit including a converting circuit and a controller is provided. In an embodiemnt of the invention, the inductance of the converting circuit and the operation frequency of the controller can be adjusted according to the power required by the load and/or the size of the inductor current to effectively reduce the switching times and the switching loss of the switch in the converting circuit when the load is light. Accordingly, no matter the load is light or heavy, the efficiency of the power converting circuit can be maintained at a higher standard. | 2011-05-12 |
20110109289 | SWITCHING REGULATOR CIRCUIT AND OPERATION METHOD THEREFOR - A switching regulator circuit for achieving stepping-up or stepping-down, including a basic circuit and an inductor connected to the basic circuit. The basic circuit includes a switching circuit to perform switching, a control circuit to control the switching circuit, a first terminal connected to one end of the inductor and the switching circuit, and second and third terminals connected to the switching circuit. When the input voltage is stepped up, the control circuit causes the switching circuit to charge the inductor via the first terminal and the third terminal and to discharge the inductor via the first terminal and the second terminal. When the input voltage is stepped down, the control circuit causes the switching circuit to charge the inductor via the first terminal and the second terminal and to discharge the inductor via the first terminal and the third terminal. | 2011-05-12 |
20110109290 | FREQUENCY CONTROL CIRCUIT AND METHOD FOR A NON-CONSTANT FREQUENCY VOLTAGE REGULATOR - A non-constant frequency voltage regulator includes a constant-time trigger to generate a pulse width modulation signal, a current generator to provide a first current to set a constant on-time or a constant off-time for the pulse width modulation signal, and a frequency control circuit to detect the pulse width of a phase node voltage, compare the pulse width with the constant on-time or the constant off-time set by the first current to generate a second current, and add the second current to the first current to supply to the constant-time trigger to control the frequency of the pulse width modulation signal. | 2011-05-12 |
20110109291 | FREQUENCY CONTROL CIRCUIT AND METHOD FOR A NON-CONSTANT FREQUENCY VOLTAGE REGULATOR - A non-constant frequency voltage regulator includes a constant-time trigger to trigger a constant on-time or a constant off-time for a pulse width modulation signal, a current generator to provide a first current to determine the constant on-time or the constant off-time, a power output stage operated by the pulse width modulation signal to produce a load current, and a frequency control circuit for loading feed forward by a second current added to the first current to adjust the constant on-time or the constant off-time for frequency compensation to the pulse width modulation signal. | 2011-05-12 |