26th week of 2010 patent applcation highlights part 20 |
Patent application number | Title | Published |
20100164360 | BLUE PHOSPHOR, LIGHT-EMITTING DEVICE, AND PLASMA DISPLAY PANEL - The present invention provides a phosphor having high luminance, a property of low luminance degradation during driving of a light-emitting device and manufacturing processes, and chromaticity y in PDP comparable to that of BAM:Eu. The present invention is the phosphor represented by the general formula xSrO.yEuO.MgO.zSiO | 2010-07-01 |
20100164361 | PLASMA DISPLAY PANEL PROTECTIVE LAYER - A plasma display panel (PDP) protective layer including a ternary compound in the form of BaXO, wherein X is selected from the group consisting of Sc, Y, Gd, La, Er, Ho, Nd, Sm, and Ce. Such protective layer has excellent electron emission characteristics and phase stability. | 2010-07-01 |
20100164362 | METAL BASE CIRCUIT BOARD - Provided is a metal base circuit board having a new function of a light reflection in addition to the conventional printed circuit board function for mounting electronic parts. The metal base circuit board has a circuit arranged on a metal plate via an insulation layer. A white film is arranged at least one the insulation layer. | 2010-07-01 |
20100164363 | DISPLAY DEVICE - A display device includes an insulating substrate having an upper surface and a lower surface opposing the upper surface, a display element including a first electrode, an organic light emitting layer on the first electrode, and a second electrode on the organic light emitting layer, a first film connected to a first side of the upper surface, and a first circuit substrate connected to the first film and including a first surface facing the display element, a second surface opposing the first surface, and an electric element protruding from the second surface. | 2010-07-01 |
20100164364 | LIGHT EMITTING DEVICE - A light emitting apparatus ( | 2010-07-01 |
20100164365 | PHOSPHOR, METHOD FOR PRODUCING SAME, PHOSPHOR-CONTAINING COMPOSITION, LIGHT-EMITTING DEVICE, IMAGE DISPLAY, AND ILLUMINATING DEVICE - To provide a phosphor emitting green fluorescence and having such superior characteristics as excellent conversion efficiency of blue light or near-ultraviolet light and excellent color purity,
| 2010-07-01 |
20100164366 | Luminescent materials for a carbon nanotube (cnt) field emission device (fed) - A RGB phosphor system for a carbon nanotube (CNT)/field emission device (FED) display operated between about 4-10 kV. The RGB phosphor system is formed on an interior surface of a screen of the CNT/FED display. The RGB phosphor system includes ZnS:Cu, Al (green phosphor), ZnS:Ag,Cl (blue phosphor) and Y | 2010-07-01 |
20100164367 | FLUORESCENT SUBSTANCE, METHOD FOR PRODUCING THE SAME, AND LIGHT-EMITTING DEVICE USING THE SAME - The present invention provides a fluorescent substance exhibiting higher brightness as compared to conventional fluorescent substances, a method for producing the same, and a light-emitting device using such a fluorescent substance. Specifically, the fluorescent substance comprises an α-sialon crystal structure having the same crystal structure with an α-type silicon nitride crystal, which includes at least an M(0) element (where M(0) represents one or two elements selected from Sr and La), an M(1) element (where M(1) represents one or more elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb), Si, Al, and nitrogen. | 2010-07-01 |
20100164368 | RADIATION- OR THERMALLY-CURABLE BARRIER SEALANTS - This invention relates to curable sealants that provide low moisture permeability and good adhesive strength after cure. The composition comprises an aromatic compound having meta-substituted reactive groups and a cationic or radical initiator. | 2010-07-01 |
20100164369 | APPARATUS OF ORGANIC LIGHT EMITTING DIODE AND PACKAGING METHOD OF THE SAME - A packaging method of an organic light emitting diode (OLED) is described. First, a substrate is provided, and the substrate has the OLED device formed thereon. Thereafter, at least one protection layer is formed on the substrate, so as to cover the peripheral sidewall of the OLED device entirely. The step of forming the protection layer includes forming an organic layer on the substrate, and then forming a metal layer on the organic layer, wherein the metal layer at least covers a sidewall of the OLED device. Afterwards, an oxidation treatment is performed, so as to oxidize a portion of the metal layer. | 2010-07-01 |
20100164370 | Polymer Compound and Method for producing the same, and Light Emitting Material, Liquid Composition, Thin Film, Polymer Light-Emitting Device, Surface Light Source, Display Device, Organic Transistor and Solar - A polymer compound comprising a repeating unit represented by the following general formula (1): | 2010-07-01 |
20100164371 | ELECTRON TRANSPORTING-INJECTION COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME - An electron transporting-injection compound, represented by following Formula 1: | 2010-07-01 |
20100164372 | ORGANIC EL DISPLAY DEVICE - An organic EL display device includes a substrate, pixel regions, each having a first electrode, a light emitting material layer, and a second electrode, and an organic bank film formed above the substrate to separate pixel regions from one another. The bank film has openings exposing upper surfaces of the first electrodes to the light emitting material layers, and the second electrode is formed over the openings in common with the pixel regions. A side wall of the bank film around the openings thereof is sloped at an angle less than 85 degrees (°) with respect to a principal surface of the substrate to prevent deterioration of the light emitting material layer and disconnection of the second electrode at steps of the bank film in the vicinity of the openings. | 2010-07-01 |
20100164373 | ORGANIC ELECTROLUMINESCENCE DEVICE AND PRODUCTION METHOD THEREOF - An object of the present invention is to provide an organic EL device with a fine appearance at the time of non-light emission, and a production method thereof. The object is achieved by providing an organic EL device comprising: a substrate, a transparent electrode layer formed on the substrate, an organic EL layer including a light emitting layer, formed on the transparent electrode layer, and a metal electrode layer including a first metal film and a second metal film, formed on the organic EL layer, wherein the metal electrode layer comprises: a first electrode region with the first metal film disposed to face the organic EL layer side, and a second electrode region with the second metal film disposed to face the organic EL layer side, and wherein the first electrode region and the second electrode region have different reflection characteristics, and the first metal film of the first electrode region and the second metal film of the second electrode region contact electrically. | 2010-07-01 |
20100164374 | Organic light emitting material and organic light emitting device using the same - Disclosed is an organic light emitting material having the following chemical formula, for improving luminous efficiency, | 2010-07-01 |
20100164375 | Organic electroluminescent display device and method of repairing a defective pixel of the device - The present invention provides an organic electroluminescent display device and a method of repairing a defective pixel of an organic electroluminescent display device which can realize the repairing a defective pixel to a light emitting pixel by electrically separating a leak portion which generates a defective pixel. To be more specific, a peeling suppression layer is formed between an anode and an organic light emitting layer formed on a main substrate, and a cavity is formed between the main substrate and the peeling suppression layer due to the evaporation generated by an absorption of laser beams thus electrically separating a defective portion so as to repair a black-dot defective pixel to form a light emitting pixel. | 2010-07-01 |
20100164376 | Anthracene Derivative, and Light Emitting Element, Light Emitting Device, Electronic Device Using Anthracene Derivative - A novel anthracene derivative represented by General Formula (1) is provided, which enables the production of a light-emitting element with high luminous efficiency and a long lifetime. A high-performance light-emitting device and electronic device in which the anthracene derivative is employed are also disclosed. The anthracene derivative of the present invention is represented by General Formula (1), in which the unit A represents any one of substituents represented by General Formulae (1-1) to (1-3). The variables shown in Formulae (1) and (1-1) to (1-3) are defined in the specification. | 2010-07-01 |
20100164377 | Organic Light Emitting Display Apparatus - An object of the present invention is to provide an organic light emitting element having a high efficiency and a high quality in which electron and hole injection efficiency of an electrode is reproduced in an insulated or contaminated first electrode. In an organic light emitting display apparatus, a substrate, a first electrode, an insulation film bank formed so as to cover edges of the first electrode, a metal thin film formed on the first electrode and the insulation film bank, an organic light emitting layer, and a second electrode are disposed in the cited order. A lower part of a side face of the insulation film bank takes a reverse tapered shape. | 2010-07-01 |
20100164378 | ELECTROLUMINESCENT DEVICE - An example embodiment there is provided an electroluminescent device comprising: an electroluminescent component, a first piezoelectric component, an alpha electrode and a first beta electrode, the electroluminescent component being located between the alpha electrode and the first piezoelectric component, the first beta electrode being in electrical contact with the alpha electrode and in electrical contact with the first piezoelectric component, the alpha electrode, first beta electrode, first piezoelectric component, and electroluminescent component being configured to generate a potential difference across the electroluminescent component responsive to a mechanical stress applied to the first piezoelectric component. | 2010-07-01 |
20100164379 | METAL HALIDE LAMP - The invention provides a metal halide lamp | 2010-07-01 |
20100164380 | LIGHT SOURCE - A light source is provided. The light source includes: a discharge lamp in which a pair of electrodes facing each other is disposed and a discharge medium is enclosed; and an energy beam irradiation unit that emits an energy beam toward a gap between the pair of electrodes. The energy beam irradiation unit emits the energy beam toward a bright spot that is formed near a tip end of the electrode when the discharge lamp is turned on by applying a voltage to the electrodes. | 2010-07-01 |
20100164381 | LONG LINEAR-TYPE MICROWAVE PLASMA SOURCE USING VARIABLY-REDUCED-HEIGHT RECTANGULAR WAVEGUIDE AS PLASMA REACTOR - A long linear-type microwave plasma source using a variably-reduced-height rectangular waveguide as the plasma reactor has been developed. Microwave power is fed from the both sides of the waveguide and is coupled into plasma through a long slot cut on the broad side of the waveguide. The reduced height of the waveguide is variable in order to control the coupling between microwave and plasma so that the plasma uniformity can remain a high quality when extending the length of the linear-type plasma source. | 2010-07-01 |
20100164382 | APPARATUS AND METHOD FOR PROVIDING A FAIL-SAFE IN A HEAD LAMP APPARATUS - Provided is an apparatus and method for providing a fail-safe in a head lamp apparatus. In one aspect of the present invention, an apparatus for providing a fail-safe in a head lamp apparatus includes an apparatus for providing a fail-safe in a head lamp apparatus includes an optical module generating a plurality of beam patterns using a predetermined shield, a shield driving unit driving the shield in the optical module, a module driving unit controlling an irradiation angle of the optical module in leftward and rightward directions, a leveling driving unit controlling the irradiation angle of the optical module in upward and downward directions, and a controller controlling the shield driving unit, the module driving unit, and the leveling driving unit, wherein when a fail occurs to one of the shield driving unit, the module driving unit, and the leveling driving unit, the controller controls at least one driving unit which is normally operating to adjust the beam pattern or the beam irradiation angle of the optical module. | 2010-07-01 |
20100164383 | METHOD OF DRIVING A DISCHARGE LAMP, DRIVING ARRANGEMENT, AN PROJECTOR SYSTEM - The invention describes a method of driving a discharge lamp ( | 2010-07-01 |
20100164384 | ILLUMINATION SYSTEM - An illumination system includes an LED lamp, a timer, a controlling circuit, a driving circuit and a power source electrically connected together. The timer produces different signals to the controlling circuit at different periods, thereby driving the LED lamp to lighten with different brightness. A light or movement sensor is further electrically connected to the LED lamp to work together with the timer. The sensor cooperating with the timer, detects light or movement of an object to drive the LED lamp to lighten for a while with a corresponding brightness. | 2010-07-01 |
20100164385 | DISCHARGE LAMP LIGHTING DEVICE - A discharge lamp lighting device is provided to comprise tube current detecting circuits | 2010-07-01 |
20100164386 | Application infrastructure for constructing illumination equipments with networking capability - An application infrastructure for constructing illumination equipments with a transmission function includes at least one lamp reporting device for reporting a lamp condition, at least one lamp detection and transmission module with a two-way communication function, at least one message transmission and receiving module coupled to a control system, and a main system. Through a built-in wireless network or a power line network function of the illumination equipments, data can be transmitted among nodes of a mixed routing by indoor lighting having a transmission function and outdoor road lamps having a transmission function, without the need of building a basic network structure. A special network structure connecting the nodes to form lines and planes constitutes the application platform for constructing the illumination equipments with a two-way transmission function. | 2010-07-01 |
20100164387 | SUPERVISION OF AN ILLUMINATION DEVICE - The invention relates to an illumination device ( | 2010-07-01 |
20100164388 | LUMINOUS SYSTEM AND METHOD WITH A CHANGEABLE COLOR LIGHT - A luminous system with a changeable color light applicable to an electronic device is provided. The system includes a light emitter for emitting a first light to outside of the electronic device, a color sensor for receiving a second light that is the reflection of the first light from an object and generating a RGB signal, and a central controller for receiving the RGB signal and generating a backlight color adjusting signal according to the RGB signal received. A backlight driver module of the device is further introduced to drive a backlight module to emit a third light according to the adjusting signal. The color of the third light is particularly the same as the second light. Thus the backlight color of the electronic device changes as what the color of the object is. The visual effect of the product can be alternative by providing this changeable color light. | 2010-07-01 |
20100164389 | CIRCUIT ARRANGEMENT AND METHOD FOR OPERATING AT LEAST ONE LED AND AT LEAST ONE FLUORESCENT LAMP - A circuit arrangement for operating an LED and an fluorescent lamp may include a main rectifier; an auxiliary rectifier; an inverter, the output of said inverter having a terminal for connecting the fluorescent lamp; a starting device, wherein its first terminal is coupled to a control electrode of one of the switches of the inverter; a pull-down circuit; and a starting capacitor; wherein the second terminal of the starting device and the second terminal of the pull-down circuit are coupled to the first output terminal of the auxiliary rectifier; wherein the starting capacitor is coupled between the first and the second output terminal of the auxiliary rectifier; and wherein there is arranged in parallel with the starting capacitor a series circuit including a first and a second terminal for the LED and an LED switch, wherein the LED switch has a control electrode, an operating electrode and a reference electrode. | 2010-07-01 |
20100164390 | LIGHT SOURCE AND METHOD FOR PRODUCING LIGHT MODIFIABLE IN COLOUR AND/OR LUMINOSITY - The present invention relates to a light source, which produces light leaving the light source with modifiable colour and luminosity, with at least one light emitting diode for emitting primary radiation, comprising a layer connected with said diode, wherein said layer includes at least one luminescent material for converting the primary radiation into a secondary radiation. | 2010-07-01 |
20100164391 | POWER SUPPLY APPARATUS AND METHOD FOR AMOLED - A power supply apparatus and method for an active matrix organic light emitting diode (AMOLED) is disclosed. The power supply apparatus supplies power to the AMOLED while using a switching frequency varied in accordance with a clock signal, and includes a load checker for comparing a load current of the AMOLED with a first reference voltage, and outputs a result of the comparison as a load check signal, and a frequency oscillator for generating the clock signal which has a variable frequency in response to the load check signal. The power supply apparatus is switched in accordance with a clock signal having a frequency modulated based on a load condition of the AMOLED, for example, a load current. Accordingly, it is possible to reduce switching power loss caused by unnecessary power consumption under the condition that a small load current is generated, thereby achieving an enhancement in efficiency. | 2010-07-01 |
20100164392 | DISCHARGE LAMP LIGHTING APPARATUS - A discharge lamp lighting apparatus is inexpensive and is capable of generally relaxing an unevenness of brightness caused by a brightness gradient of a discharge lamp. The apparatus includes an inverter | 2010-07-01 |
20100164393 | LIGHT SOURCE DRIVING CIRCUIT - A light source driving circuit includes a transformer, a switching circuit, a control circuit, a brightness adjusting circuit and an isolator circuit. The brightness adjusting circuit is connected to a secondary winding assembly of the transformer and the light-emitting element for detecting an output voltage and/or an output current and generating a control signal according to the brightness adjusting signal. The isolator circuit is used for isolating the primary winding assembly of the transformer from the brightness adjusting circuit. The isolator circuit generates a feedback current according to the control signal. According to the feedback current, the switching circuit is controlled by the control circuit. As a status of the brightness adjusting signal is changed, a status of the control signal is changed and a time period of changing the status of the control signal is longer than a time period of changing the status of the brightness adjusting signal. | 2010-07-01 |
20100164394 | LED CONTROL CIRCUIT AND METHOD - A LED control circuit and method determine the frequency and duty of a LED driving signal according to a swing control signal and a dimming control signal, respectively. Responsive to the swing control signal, a pulse edge generator generates a clock whose frequency is determined by the swing control signal. Responsive to the clock and the dimming control signal, a duty ratio controller generates the LED driving signal whose frequency is determined by the clock frequency and whose duty is determined by the dimming control signal. | 2010-07-01 |
20100164395 | Flourescent Lamp Whose Ballast Has An Output Power That Is Regulated For Flourescent Tubes Of Different Power Specifications - A fluorescent lamp includes a ballast, a holder, a power regulating switch, and a fluorescent tube. The power regulating switch includes a housing, a base, plurality of inductors, a plurality of first contacts, a plurality of second contacts, a plurality of conducting bridges, a plurality of push rods, and a plurality of elastic members. The circuit of the power regulating switch has different values of inductance and output power by provision of the inductors, and the output power of the power regulating switch is regulated by the electrical connection between each of the first contacts and the respective different second contact so as to fit the fluorescent tube of different power specifications. | 2010-07-01 |
20100164396 | DYNAMIC POWER SAVING PULSE WIDTH MODULATED LED DRIVER CIRCUIT - In accordance with an aspect of the present invention, an LED driving circuit includes a digital-to-analog converter and a driving portion. The circuit is operable to turn off the digital-to-analog converter at times when the driving portion is not providing a high signal. As such the digital-to-analog converter will waste less energy. | 2010-07-01 |
20100164397 | DIMMER DEVICE WITH FEEDBACK FUNCTION - A dimmer device enables wireless control of intensity of light output of an electric light source and includes a light dimmer for coupling electrically with the light source. The light dimmer includes a power supply module for outputting a supply power, a dimmer module operable to vary the supply power to result in drive power that is supplied to the light source, a feedback module for generating a feedback signal in accordance with the drive power, the feedback signal corresponding to a current intensity of the light output of the light source, a wireless receiver unit for receiving a control signal from a remote controller and providing the control signal to the dimmer module for controlling the dimmer module to vary the supply power in accordance with the control signal, and a wireless transmitter unit for transmitting the feedback signal from the feedback module. | 2010-07-01 |
20100164398 | SELF-LEARNING LIGHTING SYSTEM | 2010-07-01 |
20100164399 | SWITCHED LIGHT ELEMENT ARRAY AND METHOD OF OPERATION - A switched light element array includes first, second and third light emitting elements, and first and second switches. The first light emitting element includes first and second terminals, and the second light emitting element includes a first terminal, and a second terminal coupled to the second terminal of the first light emitting element. The third light emitting element includes a first terminal coupled to the first terminal of the first light emitting element and a second terminal. The first switch includes a first terminal coupled to each of the first terminals of the first and third light emitting elements and a second terminal coupled to the first terminal of the second light emitting element. The second switch includes a first terminal coupled to the second terminal of the third light emitting element, and a second terminal coupled to each of the second terminals of the first and second light emitting elements. | 2010-07-01 |
20100164400 | SWITCHING POWER SUPPLY SYSTEM FOR OPTICAL SOURCES OR A LOAD REQUIRING A CONTROLLED SUPPLY CURRENT - A switching power supply for supplying a load requiring a controlled current includes a PFC pre-regulator for receiving an input voltage and providing an output voltage, and a DC-DC switching converter for receiving at input the voltage output by the pre-regulator and for providing at output a supply voltage of said load. The switching DC-DC converter operates at a fixed and constant operating frequency, is a resonant converter and includes an LLC resonant circuit. | 2010-07-01 |
20100164401 | LIGHTING DEVICE WITH SWITCHABLE LIGHT SOURCES - Various lighting device implementations and related methods may be used to selectively provide various types of light in response to user-actuated controls. In one example, a lighting device includes a plurality of light sources, a body, a head, and one or more controls adapted to adjust operation of the light sources. The body includes a housing. The head includes a bezel adapted to rotate relative to the body to select between at least a first one of the light sources and a second one of the light sources. The head also includes a lens adapted to rotate eccentrically relative to a centerline of the head in response to rotation of the bezel. The lens includes a light inlet adapted to be selectively positioned over the first light source, the second light source, or neither of the light sources as the lens rotates eccentrically relative to the centerline of the head. | 2010-07-01 |
20100164402 | SELECTIVE CONTROL OF LIGHTING DEVICES - In an arrangement of lighting devices ( | 2010-07-01 |
20100164403 | Circuits and methods for controlling LCD backlights - A circuit for controlling light sources comprises a converter, a feedback circuit and a current distribution controller. The converter is operable for converting an input voltage to an output current and for providing the output current to the light sources. The feedback circuit is coupled to the light sources for generating feedback signals indicative of currents flowing through the light sources respectively. The current distribution controller is coupled to the feedback circuit for generating control signals based on the feedback signals respectively so as to regulate the currents of the light sources respectively, and for controlling the converter to regulate the output current based on the feedback signals. | 2010-07-01 |
20100164404 | System and method for a constant current source LED driver - A system and method for providing a constant current source driver for a light emitting diode string. The converter includes a current sensor that derives feedback signal corresponding to a peak current through the light emitting diode string. The feedback signal is used by a controller to vary a duty cycle of the controller to regulate the average current. The controller is operable to regulate the average current as the number of light emitting diodes is increased and/or decreased. | 2010-07-01 |
20100164405 | ILLUMINATED OPTICAL APPARATUS - A device may include a magnifying lens having a focal length that defines a focal plane, a light source providing visible light directed toward the focal plane, and a controller. The controller may be programmed to receive a signal indicative of the distance from the device to an object, cause the light source to emit visible light at a first brightness if the distance is at least substantially equal to the focal length of the lens, and cause the light source to emit visible light at a second brightness, dimmer than the first brightness, if the distance is not at least substantially equal to the focal length of the lens. | 2010-07-01 |
20100164406 | SWITCHING POWER CONVERTER CONTROL WITH TRIAC-BASED LEADING EDGE DIMMER COMPATIBILITY - In at least one embodiment, a controller allows triac-based dimmer to properly function and dim a load whose voltage is regulated by a switching power converter. In at least one embodiment, the switching power converter includes a switch to control voltage conversion of an input voltage to the switching power converter, wherein phase delays are introduced in the input voltage by a triac-based dimmer during a dimming period. In at least one embodiment, the controller is configured to control the switch of the switching power converter to establish an input resistance of the switching power converter during a dimming portion of the input voltage, wherein the input resistance allows the triac-based dimmer to phase modulate a supply voltage to the dimmer so that an output voltage of the dimmer has a substantially uninterrupted phase delay during each half-cycle of the supply voltage during the dimming period. | 2010-07-01 |
20100164407 | SENSING TYPE CONTROL CIRCUIT FOR ELECTRONIC APPARATUS - A sensing type control circuit for an electronic apparatus is provided. An output unit is coupled between an external power source and the electronic apparatus and provides varied power supply to the electronic apparatus according to a control signal. A switch is coupled between the external power source and the output unit and disconnects or connects the external power source. A control unit receives a sensing signal and generates the control signal to the output unit according to the received signal. A sensing unit includes a sensing device and senses an external variation, wherein the sensing unit generates the sensing signal to the control unit when the sensing device senses an excitation. | 2010-07-01 |
20100164408 | LIGHT SOURCE CONTROL DEVICE - A light source control device is provided. A switching seat includes a switching key and a sensing device. A switching circuit is disposed between an external power source and a control circuit to disconnect or connect the external power source, and includes a mechanical switch, an electronic switch and a sensing unit. The mechanical switch is directly connected to the switching key, and is controlled to turn on or off by switching the switching key. The electronic switch is coupled to the sensing unit, and the sensing unit generates a sensing signal to control the electronic switch to turn on or off when the sensing device senses an excitation. The control circuit provides varied power supply to a light source according to the received signal. | 2010-07-01 |
20100164409 | INTEGRALLY FORMED LIGHT EMITTING DIODE LIGHT WIRE AND USES THEREOF - Integrally formed LED light wires are provided, comprising a plurality of dynamically addressible LED modules, each LED module comprising one or more LEDs; a microcontroller; and one or more ports, said microcontroller being configured to: check a status of at least one of said one or more ports; if the status of the port corresponds to a predetermined state: assign the LED module to which said microcontroller belongs to a first display address, and send signals to said microcontroller of a neighboring LED module, said signals assigning respective further display address to the neighboring LED module. Such LED light wires can also include a display memory which stores current display information associated with each of said LED modules in said LED light wire, and a display controller, said display controller being configured to update the current display information stored in said display memory. | 2010-07-01 |
20100164410 | DIELECTRIC BARRIER DISCHARGE LAMP - A dielectric barrier discharge (DBD-) lamp ( | 2010-07-01 |
20100164411 | LIGHTING SYSTEM - A lighting system including a powering rod and a first lighting unit is provided. The powering rod is used for providing power. The first lighting unit includes a housing, a light source, an inner ring body and an outer ring body. The light source is disposed inside the housing. The inner ring body, disposed in the housing, has a hollowed portion for receiving the powering rob and is electrically connected to the powering rod. The outer ring body, disposed on the inner ring body fixed to the housing. The outer ring body is capable of rotating with respect to the inner ring body for rotating the housing. When the outer ring body is rotated to a first position, the first lighting unit is in a first lighting state. When the outer ring body is rotated to a second position, the first lighting unit is in a second lighting state. | 2010-07-01 |
20100164412 | METHOD AND SYSTEM TO START MULTIPLE AC MOTORS SUPPLIED BY A POWER CONVERTER VIA A COMMON AC BUS - A method to start at least two AC motors that are supplied from a common AC bus, which in turn is supplied from a power converter. At least one of the AC motors is an electrically excited synchronous motor including an excitation circuit. The synchronous motor is started first. During starting of remaining of the at least two AC motors a reactive power supplied by the power converter is determined and an increase of a field current or of a field voltage of the synchronous motor in linear dependence on the reactive power supplied by the power converter is determined. The increased field current or field voltage is applied to the excitation circuit of the synchronous motor. | 2010-07-01 |
20100164413 | DRIVING CIRCUIT FOR VOICE COIL MOTOR AND METHOD THEREOF - The invention provides a driving circuit for a voice coil motor. In one embodiment, the driving circuit includes a logic circuit, a digital-to-analog converter, and an output circuit. The logic circuit generates a series of samples of a digital output signal according to a digital input signal, wherein the samples of the digital output signal sequentially alter from a first input value of the digital input value to a second input value of the digital input signal according to an alteration pattern determined by a mode selection signal. The digital-to-analog converter converts the digital output signal to an analog output signal. The output circuit generates a driving current signal according to the analog output signal for driving the voice coil motor. | 2010-07-01 |
20100164414 | MOTOR DRIVING SYSTEM AND METHOD - A motor driving system includes a storage unit, a driver, and a controller. The driver includes a first programmable logic device (PLD). The controller includes a second PLD. The storage unit stores a control program. The controller generates a first transmission data to the first PLD and a second transmission data to the second PLD according to the control program. The first PLD generates a first message packet including the first transmission data. The second PLC generates a second message packet including the second transmission data. The first and second PLDs communicate with each other using a full duplex transmission mode or a half duplex transmission mode. | 2010-07-01 |
20100164415 | METHOD FOR CONTROLLING POLYPHASE ROTATING ELECTRICAL MACHINE - A method for controlling a reversible polyphase rotating electrical machine, wherein at least one coil circuit is supplied through a bridge of switches, including the following steps: controlling (P | 2010-07-01 |
20100164416 | MOTOR DRIVE SYSTEM AND ITS CONTROL METHOD - A ripple detection unit detects a ripple current width of a motor current controlled according to PWM control. A ripple reference setting unit sets a reference value of the ripple current width. A frequency adjusting unit sets a control signal indicating a carrier frequency of the PWM control according to a ripple current width deviation. A carrier generation unit generates a carrier of the frequency based on the control signal. Thus, it is possible to realize feedback control of the carrier frequency for maintaining the ripple current width at an appropriate level. | 2010-07-01 |
20100164417 | APPARATUS MOTOR CONTROL METHOD - A method for controlling a motor can suppress an influence of speed variation due to cogging of the motor. The method includes performing a preliminary drive process to output a first driving signal to the motor to move the mechanism, performing the preliminary drive process to output a second driving signal corresponding to a cogging period of the motor to the motor as well as output the first driving signal, to move the mechanism, determining parameters which include an output waveform and output timing of the second driving signal based on a speed of the mechanism in the preliminary drive process, and outputting the second driving signal according to the determined parameters to the motor as well as outputting the first driving signal to the motor in an actual drive process to perform predetermined processing by moving the mechanism. | 2010-07-01 |
20100164418 | Power Converting Apparatus - To reduce, in a power converting apparatus for an electric locomotive, a sixth-order harmonic noise induced by a torque ripple component equivalent to a sixth-order frequency of an inverter frequency. When a motor is driven in a three-pulse mode to drive the electric locomotive, three pulses included within a ½ cycle of the inverter frequency in a PWM waveform, which is used for controlling a switching element of an inverter unit that drives the motor, are set to satisfy Tq≧T/8, Tp≦Tq/2, and Tr≦Tq/2 where, assuming that the three pulses include a first pulse, a second pulse, and a third pulse from an order of generation, Tp is a pulse width of the first pulse, Tq is ½ of a pulse width (full width at half maximum of a pulse) of the second pulse, Tr is a pulse width of the third pulse, and T is a cycle of the inverter frequency. | 2010-07-01 |
20100164419 | Motor Driving Inverter Circuit Module, Motor Driving Apparatus Having the Motor Driving Inverter Circuit Module, and Inverter Integrated Circuit Package - The motor driving inverter circuit module includes first-phase, second-phase, and third-phase high voltage drivers generating first-phase, second-phase, and third-phase upper arm and lower arm driving signals in response to input signals for driving the first-phase, second-phase, and third-phase upper and lower arms and a first-phase, second-phase, and third-phase upper arm and lower arm transistors, generating first-phase, second-phase, and third-phase motor driving output signals in response to the first-phase, second-phase, and third-phase upper arm and lower arm driving signals of the first-phase, second-phase, and third-phase high voltage drivers. The first-phase, second-phase, and third-phase high voltage drivers and the first-phase, second-phase, and third-phase upper arm and lower arm transistors are respectively integrated into separate chips. | 2010-07-01 |
20100164420 | BRUSHLESS DIRECT CURRENT MOTOR AND DRIVING UNIT THEREOF - A brushless direct current (DC) motor includes a rotor, a stator and a driving unit. The rotor includes a plurality of magnetic poles. The stator includes a plurality of upper pole arms and a plurality of lower pole arms. The driving unit includes at least two coils wound on the upper pole arms and the lower pole arms respectively, and the driving unit generates an alternating magnetic field on the stator for driving the rotor. | 2010-07-01 |
20100164421 | APPARATUS, SYSTEM, AND METHOD FOR IMPROVED FAN CONTROL IN A POWER SUPPLY - An apparatus, system, and method are disclosed for controlling fan speed in a power supply. The apparatus measures input power to the power supply and measures the output power provided by the power supply over an interval. The apparatus determines values for the input power and output power and, using the two, determines how much power has been dissipated in the power supply. Power dissipation values are associated with particular fan speeds, and the apparatus adjusts the speed of the fan in the power supply based on how much power was dissipated during the interval. Increasing levels of power dissipation increases the fan speed, and decreasing levels of power dissipation decrease the fan speed. | 2010-07-01 |
20100164422 | VARIABLE MAGNETIC FLUX ELECTRIC ROTARY MACHINE - An electric rotary machine is disclosed which can adjust relative angles of sub-rotors continuously and regardless of torque direction without generating an attractive force between the field magnets of the sub-rotors. The electric rotary machine includes: a stator having a winding; a dual rotor which is rotatably disposed with a gap from the stator and divided axially along a shaft into a first rotor and a second rotor each having field magnets with different polarities arranged alternately in a rotation direction; a mechanism for varying the axial position of the second rotor relative to the first rotor continuously; and a non-magnetic member located between the first rotor and the second rotor. | 2010-07-01 |
20100164423 | SERVO SYSTEM AND SAFETY CONTROL DEVICE - This invention aims to achieve safety without interchanging an entire existing servo system to a servo system having the safety function. In a servo system including a servo motor, and a servo amplifier for controlling the drive of the servo motor based on the output of an encoder attached to the servo motor, a safety control device for monitoring presence of abnormality based on the output of the encoder, and shielding the supply of drive power to the servo motor if abnormality is present is arranged, and the monitoring content is set as setting information. | 2010-07-01 |
20100164424 | TOOL COMPENSATION SYSTEM AND METHOD FOR COMPUTER NUMERICAL CONTROL MACHINE - A tool compensation system for compensating abrasion of a tool includes a rangefinder, a control system, and a compensation apparatus. The compensation apparatus includes an actuator, a transmission element, and a regulator. The rangefinder measures an actual length of the tool. The control system calculates a compensation value according to the actual length, and outputs a control instruction to the compensation apparatus according to the compensation value. The transmission element is actuated by the actuator to move a distance equaling to the compensation value in response to receiving the control instruction. The regulator is configured for supporting an article to be machined by the tool, and capable of moving towards the tool under the actuation of the transmission element, to compensate for abrasion of the tool. | 2010-07-01 |
20100164425 | SENSOR SIGNAL ESTIMATOR AND MOTOR CONTROLLER FOR STABILIZATION OF TRACKING ANTENNA - Provided is an apparatus and method for estimating sensor signals to stabilize a posture of a mobile satellite tracking antenna. The apparatus includes: an angular velocity estimating unit for estimating an angular velocity signal by removing an error signal generated from an input angular velocity sensor signal through a first low frequency band filtering operation; and an inclination angle estimating unit for estimating an inclination angle signal by receiving an inclination angle sensor signal, extracting low frequency component of inclination angle signal through performing a second low frequency band filtering operating on the received inclination angle sensor signal, obtaining an inclination angle integrating signal through integrating the estimated angular velocity signal, extracting high frequency component of inclination angle signal through performing a high frequency band filtering operation on the inclination angle integrating signal, and adding the extracted low frequency component and high frequency component of inclination angle signal. | 2010-07-01 |
20100164426 | Stepping motor control circuit and analogue electronic watch - A detecting period of a stepping motor is divided into a first segment for detecting an induced signal generated at least in a second quadrant by the rotation of a rotor immediately after the driving of a main driving pulse, a second segment being provided after the first segment for detecting the induced signal in a third quadrant, and a third segment provided after the second segment and the control circuit drives the stepping motor by the predetermined fixed main driving pulse having energy not smaller than the maximum energy when a rotation detecting circuit does not detect the induced signal exceeding a reference threshold voltage in the second segment at the time of the rotational driving by the main driving pulse having the maximum energy. | 2010-07-01 |
20100164427 | APPARATUS, SYSTEM, AND METHOD FOR FAULT TOLERANT COOLING IN A REDUNDANT POWER SYSTEM - An apparatus, system, and method are disclosed for fault tolerant cooling in a redundant power system. The apparatus receives power from a common power bus to power one or more power supply fans. The apparatus detects a non-functioning redundant power supply. The apparatus receives a fan control signal within a non-functioning redundant power supply. In addition, the apparatus uses the received fan control signal to synchronize a fan speed of a power supply fan within the non-functioning redundant power supply. The fan speed is synchronized with at least one fan control signal of a power supply fan within a functioning redundant power supply. Thus, the power supply fans of a non-functioning power supply continue to operate and are synchronized with power supply fans in functioning power supplies. | 2010-07-01 |
20100164428 | METHOD AND SYSTEMS FOR AN ENGINE STARTER/GENERATOR - A method and system for an engine starter/generator is provided. The starter/generator system includes a three phase squirrel cage induction machine, a three phase inverter/converter electrically coupled to the three phase squirrel cage induction machine. The starter/generator system also includes a bidirectional DC-DC converter electrically coupled to the three phase inverter/converter, and a digital control board configured to sensorlessly determine a rotor angle from a plurality of phase currents to the induction machine during a start mode. During the start mode, logic in the digital control board configures the starter/generator system into a combination of an induction motor, a three phase DC-AC inverter, and a DC-DC boost converter, and during a generate mode, the logic in the digital control board configures the starter/generator system into a combination of an induction generator, a three phase AC-DC converter, and a DC-DC buck converter. | 2010-07-01 |
20100164429 | INVERTER CONTROL APPARATUS - An inverter control apparatus includes: a state estimator that calculates an estimated current vector and an estimated magnetic flux vector from a motor command voltage vector, a detected current vector, and a motor parameter; a correction voltage calculator that calculates a correction voltage vector on the basis of a current error between the detected current vector and the estimated current vector; and a correction voltage unit that adds the correction voltage vector to the motor command voltage vector. | 2010-07-01 |
20100164430 | Intelligent Adaptive Energy Management System and Method for Using - An intelligent adaptive energy management system and method that manages the charge and discharge process as well as the environmental quality of the energy resource to maximize its safety and its energy output. The system includes multiple features that may be used alone or in combination. One feature includes one or more sensors capable of measuring various characteristics of the battery cells and their environment such as cell temperature, rate of rise in cell temperature, cell voltage, cell density, cell internal resistance and cell shape deformation. The sensors communicate the measured data to a controller which controls activities such as cell charging, cell discharging, cell balancing, and/or cell availability to provide energy to the device served. Another feature includes a charging module in communication with the controller adapted to provide varying types and/or durations and/or amplitudes of the charge to the cells. Another feature includes a discharge system and methodology in communication with the controller that employs at least one first battery cell and at least two second battery cells adapted to work together in a complementary manner. Another feature includes an active cell balance system and methodology for balancing battery cells. Circuitry, firmware, and programmable software may be used to implement and control the above systems and methodologies to push energy resource capacity beyond its normal limits in a safe and predictable manner. | 2010-07-01 |
20100164431 | RECHARGING SYSTEM AND ELECTRONIC DEVICE - A recharging system for a rechargeable battery in an electronic device includes a receiver and a power supply. The receiver is fixed to a surface of a casing of the electronic device. The receiver includes a receiving coil connected to the rechargeable battery. The receiving coil is a planar spiral coil substantially parallel to the surface of the casing of the electronic device. The power supply includes a base and a source coil attached to a surface of the base corresponding to the receiving coil, and the source coil is a planar spiral coil and capable of magnetically coupling to the receiving coil of the receiver. | 2010-07-01 |
20100164432 | Method and device for recharging a headset - A system for recharging a headset includes a base, a cradle connected to the base, and an electrical plug connected to the base, wherein the cradle is formed of resilient material which is deformable to accommodate headsets of different dimensions. | 2010-07-01 |
20100164433 | Wireless Battery Charging Systems, Battery Systems and Charging Apparatus - Disclosed is a battery charging system, a battery system, a charging apparatus, wherein the charging apparatus includes an ultrasonic wave generator configured to be in intimate proximity to an ultrasonic wave receiving device including a piezoelectric component. The ultrasonic wave receiving device includes a piezoelectric component of a resonant frequency substantially matching the frequency of the transmitted ultrasonic waves from the ultrasonic wave generator. A gel-based surface of the charging apparatus is configured to be in intimate proximity with both the piezoelectric component and the ultrasonic wave generator. The piezoelectric component is coupled to a battery by a circuit, the piezoelectric component configured to receive ultrasonic wave vibrations of the ultrasonic waves, the ultrasonic wave receiving device further including a circuit configured to convert the mechanical vibrations to electrical energy in accordance with an inverse piezoelectric effect. The battery is configured to receive and store the energy. | 2010-07-01 |
20100164434 | Electronic Rechargeable Stylus and Eraser System - A system for recording writing performed on a surface includes a rechargeable stylus, a rechargeable eraser, and a charging station for one or both of the rechargeable stylus and the rechargeable eraser. Each of the rechargeable stylus and the rechargeable eraser includes a pair of charging rings. The charging rings are disposed so as to contact a corresponding pair of charging contacts on a receptacle on the charging station for the stylus or the eraser. The receptacle, charging contacts, and charging rings cooperate to charge rechargeable stylus or the rechargeable eraser when the stylus or eraser is placed into the receptacle. | 2010-07-01 |
20100164435 | MultiChannel DC Controller Operating Independently of Output Power in Critical Conduction Mode - A multichannel bidirectional DC converter includes first and second parallel current channels and a controller. The first channel has a first inductor, first and second switches, and a device operable for detecting a current null passage (zero crossing) of current of the first inductor. The second channel has a second inductor and third and fourth switches. The controller controls the switches to turn on and off such that the channels can be driven in either a boost converter mode or a buck converter mode at a given time. The controller is operable with the device of the first channel for detecting a period of the current null passage of the first inductor. The controller drives the channels with a time delay with respect to one another based on the detected period such that the channels operate in a critical conduction mode. | 2010-07-01 |
20100164436 | Control Electronics for Li-ion Batteries - A storage voltage of a battery pack is controlled with control electronics. The storage voltage of a battery pack is sensed, and a discharge mechanism is triggered if the storage voltage is within a predetermined range of voltage, to thereby adjust the storage voltage of the battery pack to below the predetermined range of voltage, or if the storage voltage is at or above a predetermined voltage, to thereby adjust the storage voltage of the battery pack to below the predetermined voltage. Control electronics sense a storage voltage of a battery pack and trigger a discharge mechanism if the storage voltage is within a predetermined range of voltage, to thereby adjust the storage voltage of the battery pack to below the predetermined range of voltage, or if the storage voltage is at or above a predetermined voltage, to thereby adjust the storage voltage of the battery pack to below the predetermined voltage. The control electronics are coupled to an electronic device and a battery pack. The control electronics are either implemented into the electronic device or the battery pack, or in a separate control electronic device. | 2010-07-01 |
20100164437 | BATTERY FORMATION AND CHARGING SYSTEM AND METHOD - Method and system for forming or charging batteries or power cells. The system includes control processor; input switch coupled to a power supply, charging switch coupled to the battery, filter network between the input and charging switches, battery temperature sensor, input voltage sensor, and charging voltage and current sensors. The control processor monitors the sensors and controls the switches to deliver a charging waveform to the battery selected to perform an efficient charging of the battery. The method includes applying a charging current pulse, having a current value and a pulse width, to the battery at a repetition rate; monitoring battery temperature; determining whether to change the current value, repetition rate or pulse width; and changing them when determined. Battery resistance can be a determinant. A sensor on a battery post can monitor battery temperature. A hardware temperature sensor can monitor system temperature and be used to detect system resonance. | 2010-07-01 |
20100164438 | BATTERY CONTROLLING APPARATUS FOR A VEHICLE - The present invention relates to a battery controlling apparatus for a vehicle and effectively prevents overcharge upon battery charging with a simple configuration. | 2010-07-01 |
20100164439 | CHARGING CONTROL DEVICE, METHOD, AND PROGRAM - This invention aims to more appropriately perform reserved charging of a battery, which is a power source of a vehicle. A necessary capacity calculation unit obtains a necessary capacity, which is a necessary capacity of the battery, based on at least one of an average traveling distance of the vehicle and an average consuming amount of the battery for a predetermined time. A charging time calculation unit obtains a time necessary for charging from a currently remaining amount of the battery to the necessary capacity as a charging time. A reserved time setting unit sets a charging start time of the battery between a current time and a time in which the charging time is subtracted from a use start time set by a user, and sets a time the charging time elapsed from the charging start time as a charging end time. A charging control unit controls to charge the battery from the set charging start time to the charging end time. The present invention can be applied to a charging control device of an electrical vehicle. | 2010-07-01 |
20100164440 | Charger for electronic device, electronic device, and charging method - A charger for an electronic device that charges a rechargeable battery of the electronic device. The charger includes a detection unit, which detects connection of another electronic device to the electronic device through a communication cable including a power supply line. A charging unit charges the rechargeable battery with power supply voltage from the power supply line. A measurement unit acquires a measurement value indicating a degree of a voltage drop of the power supply voltage occurred when the charging unit performs charging. A control unit instructs a charging current value for charging the rechargeable battery with the charging unit. When the detection unit detects connection of the other electronic device, the control unit monitors the measurement value while instructing the charging unit to increase the charging current value from an initial current value and determines the charging current value based on the monitored measurement value. | 2010-07-01 |
20100164441 | Dense Energy Storage via Interacting Nanostructures - Apparatus and method for dense energy storage is disclosed. The inner tube of a multi-wall nanotube is reversibly withdrawn from the outer tube thereof via a facing electrode that is biased with respect to the nanotube by an external voltage source. As the inner tube is withdrawn, the potential energy of the van der Waals field between the inner tube and the outer tube increases, which manifests as a force that is directed opposite to the electrostatic force of attraction between the electrode and the inner tube. The storage apparatus is discharged by decreasing the applied voltage, which enables the van der Waals force to overcome the electrostatic force. As a consequence, the inner tube is drawn back into the outer tube. The electrode and nanotube define a variable capacitor and, as such, the change in capacitance based on movement of the inner tube results in a flow of charge to a load. | 2010-07-01 |
20100164442 | DYNAMIC ADJUSTMENT OF POWER CONVERTER CONTROL - In general, in one aspect, the disclosure describes a system comprising a power converter, a power delivery network, a load, and a communication link between the power converter and the load. The communication link is to implement a training sequence to dynamically adjust parameters of the power converter and set load-line slope based on implementation of the system. The load includes a training capability to generate stimuli having defined patterns and to update on the stimuli application to the power converter over the communication link. The power converter includes a controller to measure noise amplitude in a power output based on the stimuli, to adjust loop parameters to reduce the noise amplitude, and to set the load-line for the power converter based on the adjusting. | 2010-07-01 |
20100164443 | METHOD FOR CONTROLLING A SWITCHING REGULATOR AND RELATED SWITCHING REGULATOR - An embodiment of a power-supply controller comprises a switching-control circuit, an error amplifier, and a signal generator. The switching-control circuit is operable to control a switch coupled to a primary winding of a transformer, and the error amplifier has a first input node operable to receive a feedback signal, a second input node operable to receive a comparison signal, and an output node operable to provide a control signal to the switching-control circuit. The signal generator is operable to generate either the feedback signal or the comparison signal in response to a compensation signal that is isolated from a secondary winding of the transformer and that is proportional to a load current through a conductor disposed between the secondary winding and a load. | 2010-07-01 |
20100164444 | TRANSFORMING APPARATUS FOR AUTOMATICALLY ADJUSTING THREE-PHASE POWER SUPPLY VOLTAGE - A transforming apparatus automatically adjusting the voltage of three-phase power supply comprising three input terminals, three output terminals, a Y-connection three-phase transformer, a switch group, and a switch switching circuit. The three input terminals are respectively connected to three main lines of the three-phase power supply, and the three output terminals are connected to a load installation. The Y-connection three-phase transformer comprises a core, an R-phase winding circuit, an S-phase winding circuit, and a T-phase winding circuit. In the R-phase winding circuit, an R-phase main winding, an R-phase first auxiliary winding, an R-phase first switch, an R-phase second auxiliary winding, and an R-phase third auxiliary winding are serially connected in that order between the input terminal Rin and a neutral point O, the output terminal Rout being connected to the other end of the R-phase main winding. An R-phase second switch is connected in parallel with a series circuit of the R-phase first auxiliary winding and the R-phase first switch. An R-phase third switch is connected in parallel with a series circuit of the R-phase first auxiliary winding, the R-phase first switch, and the R-phase second auxiliary winding. An R-phase fourth switch is connected in parallel with a series circuit of the R-phase second auxiliary winding and the R-phase third auxiliary winding. The switch switching circuit controls the switches based on the voltage levels of the output terminals to switch between first to fourth modes in an alternative manner. | 2010-07-01 |
20100164445 | Digital Linear Voltage Regulator - A digital linear voltage regulator includes a comparator, a finite state machine, and a current digital-to-analog converter (DAC). The comparator is preferably coupled to receive a reference voltage and an operating voltage supplied to a dynamic load. The comparator generates, during a clock cycle, a binary output based on a comparison between reference and operating voltages. The finite state machine (FSM) is coupled to receive at least one control signal that indicates a target operating state for the digital linear voltage regulator. The FSM receives the binary output from the comparator and generates a digital word, during a clock cycle, based on the target operating state of the digital linear voltage regulator and on the binary output. The current DAC is coupled to the FSM, receives the digital word and delivers current at the desired voltage to the dynamic load. | 2010-07-01 |
20100164446 | BIDIRECTIONAL DC-DC CONVERTER - The object of the present invention is to provide a bi-directional DC-DC converter having a simplified circuit configuration. Each output of high voltage detection circuit ( | 2010-07-01 |
20100164447 | STATIC-DYNAMIC-DYNAMIC REPEATER CIRCUIT - A repeater circuit. The repeater circuit includes two input circuits, two intermediate circuits, and two output circuits. Responsive to a transition of an input signal from one logic level to another level, one of the input circuits is activated. The corresponding intermediate circuit is activated corresponding to activation one of the input circuits, and in turn, the corresponding output circuit is activated, which then drives an output signal on an output node. After a delay, a feedback signal conveyed via a feedback path deactivates the corresponding intermediate circuit and the corresponding output circuit. After deactivation of the corresponding output circuit, a keeper circuit continues to provide the output signal on the output node. The other one of the two input circuits inhibits activation of the other one of the intermediate circuit responsive to the transition, which results in the other output circuit also being inhibited from activation. | 2010-07-01 |
20100164448 | Saturating Series Clipper - A clipper circuit for regulating an unregulated or semi-regulated output of a power supply unit. The circuit includes a gate element between the load and the input voltage from the power supply unit. The gate is activated by a comparing circuit, which turns the gate on or off based on the feedback voltage of the circuit output, compared with a reference voltage. The gate is in saturation mode during normal and heavy loading and in linear mode during light loading. | 2010-07-01 |
20100164449 | Power Converter with a Dynamically Configurable Controller and Output Filter - A controller and an output filter for a power converter, and a power converter employing at least one of the same. In one embodiment, the controller includes an error amplifier with first and second input terminals coupled to one of an operating characteristic and a reference voltage of the power converter, and a switch configured to couple the first and second input terminals to one of the operating characteristic and the reference voltage as a function of a power conversion mode of the power converter. In one embodiment, the output filter includes an output filter capacitor with a first terminal coupled to a first output terminal of a power converter, and an output filter inductor coupled between a second terminal of the output filter capacitor and a second output terminal of the power converter. | 2010-07-01 |
20100164450 | APPARATUS, SYSTEM, AND METHOD FOR PROVIDING HIGH EFFICIENCY IN A POWER SUPPLY OVER A RANGE OF LOAD CONDITIONS - An apparatus, system, and method are disclosed for providing high efficiency in a power supply over a range of load conditions. The apparatus includes a condition module that determines whether the power supply is in a high load state or a low load state. A high load module ensures that the load receives power through the power supply's high load power train if the load state is the high load state. A low load module ensures that the load receives power through the power supply's low load power train if the load state is the low load state. The high load power train is optimized for efficiency under high power conditions, while the low load power train is optimized for efficiency under low power conditions. The power supply thus operates with the most efficient power train for the particular load conditions, improving the net efficiency of the power supply. | 2010-07-01 |
20100164451 | Voltage Regulator and Method for Voltage Regulation - A voltage regulator, comprising: an input terminal; an output terminal at which an output voltage is provided; an output transistor which couples the input terminal of the voltage regulator to the output terminal of the voltage regulator; and a transimpedance amplifier including an input terminal which is coupled to the output terminal of the voltage regulator and an output terminal which is coupled to a control terminal of the output transistor, optionally via a coupling, the coupling having an impedance value between the output terminal of the transimpedance amplifier and the control terminal of the output transistor which at a given frequency is smaller than or equal to an impedance value of an output impedance of the transimpedance amplifier. The transimpedance amplifier comprises an amplifier including an input terminal which is coupled to the input terminal of the transimpedance amplifier, and an output terminal which is coupled to the output terminal of the transimpedance amplifier, and wherein the transimpedance amplifier further comprises a first impedance which couples the output terminal of the transimpedance amplifier to the input terminal of the transimpedance amplifier and which comprises a first resistor with a first terminal which is connected to a first terminal of the first impedance, a second resistor with a first terminal which is connected to a second terminal of the first resistor and a second terminal which is connected to the second terminal of the first impedance, and a first capacitor which couples the second terminal of the first resistor to the input terminal of the voltage regulator. | 2010-07-01 |
20100164452 | CURRENT REGULATOR - A current regulator includes a first switch, a second switch, a first current detecting circuit, a second current detecting circuit and a control circuit. Both of the first and second current detecting circuits detect the current of corresponding power route. The control circuit controls the first and the second switches on the route to be turned on or turned off according to detecting signals, and regulates to keep the wiring current in balance. | 2010-07-01 |
20100164453 | CURRENT MODE DC-DC CONVERTER - A voltage regulator uses a comparing apparatus having hysteresis characteristics. The voltage regulator includes a comparator for comparing a comparison voltage with a reference voltage, and outputs a result of the comparison; a switching controller for generating a plurality of switching signals in response to the comparison result; resistors connected in the form of a string, to divide the comparison voltage into a plurality of voltages; and a switching box for selecting one of the plural voltages, as the comparison voltage, in response to the switching signals. | 2010-07-01 |
20100164454 | POWER CONVERTER - The present invention relates to power converters of the type known generally as switch mode power converters (SMPCs). In particular, the present invention addresses the problem of reducing thermal stress across the phases of a multi phase converter. Specifically, a method of controlling a multi-phase switch mode power arrangement is provided. The multi-phase arrangement comprises a plurality of phases configured to deliver DC power to a common load. The method comprises the steps of: determining the thermal stress of each phase along with at least one other stress for each phase and controlling the share of DC power provided by the individual phases in an effort to equalise the thermal and other stress across the individual phases. | 2010-07-01 |
20100164455 | ADAPTIVE MULTI-MODE DIGITAL CONTROL IMPROVING LIGHT-LOAD EFFICIENCY IN SWITCHING POWER CONVERTERS - Adaptive multi-mode digital control schemes that improve the light-load efficiency (and thus the overall average efficiency) in switch-mode power converters without causing performance issues such as audible noises or excessive voltage ripples. Embodiments include a switch-mode power converter that reduces current in the power converter using a second pulse-width-modulation (PWM) mode before reaching switching frequencies that generate audible noises. As the load across the output of the power converter is reduced, the power converter transitions from a first PWM mode in high load conditions to a first pulse-frequency-modulation (PFM) mode, then to a second PWM mode, and finally to a second PFM mode. During the second PFM mode, the switching frequency is dropped to audible frequency levels. Current in the power converter, however, is reduced in the second PWM mode before transitioning to the second PFM mode. Therefore, the power converter produces less or no audible noise in light load conditions where the switching frequency drops to audible frequency levels, while achieving high efficiency across varying load conditions. | 2010-07-01 |
20100164456 | CONTROL CIRCUIT AND CONTROL METHOD FOR SWITCHING REGULATOR - A first comparator compares a feedback voltage that corresponds to the output voltage of a switching regulator with a threshold voltage having hysteresis. The first comparator outputs a voltage comparison signal which is asserted when the feedback voltage is smaller than the threshold voltage. A second comparator generates a current comparison signal which is asserted when an electric current that flows through a switching transistor reaches a reference current. During a period in which the voltage comparison signal is asserted, a logic unit performs an operation in which, when the current comparison signal is asserted, a control signal is set to a second level at which the switching transistor is turned off, following which, after the passage of a predetermined OFF time, the control signal is set to a first level at which the switching transistor is turned on. | 2010-07-01 |
20100164457 | Voltage Regulator Circuit - One embodiment of the invention includes a regulator circuit that regulates a substantially constant magnitude of an output voltage at an output node. The circuit includes a master stage configured to set a first threshold voltage and a second threshold voltage. The first threshold voltage can have a magnitude that is greater than the second threshold voltage. The circuit also includes a charging follower stage configured to conduct a first current from a first power rail to the output node. The first current can increase in response to a transient decrease of the output voltage relative to the first threshold voltage. The circuit further includes a discharging follower stage configured to conduct a second current from the output node to a second power rail. The second current can increase in response to a transient increase of the output voltage relative to the second threshold voltage. | 2010-07-01 |
20100164458 | INDUCTIVE POWER SYSTEM - An inductive power transfer system for coupling a power source to a load across an air gap is provided, including a primary unit and a secondary unit separable from the primary unit and arranged to receive power inductively from the primary unit when placed proximate thereto. The system includes a multi stage comparator for monitoring operating conditions within the secondary unit and feedback loop for transmitting a feedback signal to the primary unit when predetermined operating conditions are detected within the secondary unit. The primary unit is arranged to operate in a low power mode where power is applied to the primary winding for a minimal period during each switching cycle when no feedback signal is received and a high power mode where power is applied to the primary winding for the majority of each switching cycle when a feedback signal is received. The power transfer system functions by applying bursts of power from the primary to the secondary unit, the bursts becoming more frequent and of longer duration as the load on the secondary unit increases or the air gap increases, so as to transfer more power or maintain power as air gap losses increase. The bursts of power will also change their duration and frequency in correspondence with variations of the input power supply to the primary unit, so as to maintain the voltage regulation of the power delivered to the secondary unit. | 2010-07-01 |
20100164459 | VOLTAGE LIMITER AND PROTECTION OF A PHOTOVOLTAIC MODULE - A voltage limiter device of an assembly of photovoltaic modules, including: (a) means (Z | 2010-07-01 |