46th week of 2010 patent applcation highlights part 18 |
Patent application number | Title | Published |
20100289379 | SURFACE ACOUSTIC WAVE (SAW) DEVICE - [Problem] In a SAW device using a SH-wave type surface acoustic wave, obtain a means to improve the Q factor. | 2010-11-18 |
20100289380 | Surface Wave Resonator Having Reduced Parasitic Resonance - The invention relates to a surface acoustic wave resonator produced on a cut substrate with propagation axes for which a nonzero directivity exists and comprising at least one central transducer (Tc) exhibiting a central axis, a first array of reflectors (R | 2010-11-18 |
20100289381 | AUTOMATED DRIVE FREQUENCY CONTROL FOR RESONANT ACTUATOR SYSTEMS AND METHODS THEREOF - An actuator system includes an actuator device comprising at least one piezoelectric member, a driving system, and an actuator controller. The driving system drives the at least one piezoelectric member at a driving frequency. The actuator controller monitors at least one parameter of the actuator device and the direct driving system to determine an operational mechanical resonant frequency of the actuator device based on the at least one parameter. The actuator controller adjusts the driving frequency based at least in part on the determined operational mechanical resonant frequency. | 2010-11-18 |
20100289382 | ULTRASONIC LINEAR MOTOR - An ultrasonic linear motor includes a substrate; a vibrator disposed on the substrate having an oblique or curved face at two sides thereof; and a slider having clamping portions at two sides thereof for correspondingly contacting with the two side faces of the vibrator and the substrate surfaces, wherein the vibrator is for generating a driving force to the slider while connecting with a power supply, such that the clamping portions of the slider slides with respect to the two side surfaces of the vibrator and with respect to the substrate surface, thereby generating a linear translation. The present invention adopts a simple structure having few elements that enables easy manufacturing and integration with other elements, thus reducing manufacturing cost. | 2010-11-18 |
20100289383 | PIEZOELECTRIC THIN FILM AND METHOD OF MANUFACTURING THE SAME, INK JET HEAD, METHOD OF FORMING IMAGE WITH THE INK JET HEAD, ANGULAR VELOCITY SENSOR, METHOD OF MEASURING ANGULAR VELOCITY WITH THE ANGULAR VELOCITY SENSOR, PIEZOELECTRIC GENERATING ELEMENT, AND METHOD OF GENERATING ELECTRIC POWER WITH THE PIEZOELECTRIC GENERATING ELEMENT - Provided are a piezoelectric thin film including a lead-free ferroelectric material and exhibiting high piezoelectric performance comparable to that of lead zirconate titanate (PZT), and a method of manufacturing the piezoelectric thin film. The piezoelectric thin film of the present invention includes: a LaNiO | 2010-11-18 |
20100289384 | Ceramic and method of manufacturing the same, dielectric capacitor, semiconductor device, and element - A method of manufacturing a ceramic includes forming a film which includes a complex oxide material having an oxygen octahedral structure and a paraelectric material having a catalytic effect for the complex oxide material in a mixed state, and performing a heat treatment to the film, wherein the paraelectric material is one of a layered catalytic substance which includes Si in the constituent elements and a layered catalytic substance which includes Si and Ge in the constituent elements. The heat treatment includes sintering and post-annealing. At least the post-annealing is performed in a pressurized atmosphere including at least one of oxygen and ozone. A ceramic is a complex oxide having an oxygen octahedral structure, and has Si and Ge in the oxygen octahedral structure. | 2010-11-18 |
20100289385 | MOTOR - A motor is disclosed. The motor can include: a rotor equipped with a shaft; a base, in which a housing hole is formed and which includes a housing support portion protruding along a periphery of the housing hole; a housing, which may be inserted in the housing hole to be supported by the housing support portion and in which a through-hole is formed so that the shaft may be inserted in one side of the through-hole; and a rotor support, which may be inserted into the other side of the through-hole and in which a support indentation is formed to rotatably support the shaft. This motor can be manufactured by a simple process at a low manufacturing cost. | 2010-11-18 |
20100289386 | COOLING SYSTEM FOR ROTATING MACHINE - An electrical machine comprising a rotor is presented. The electrical machine includes the rotor disposed on a rotatable shaft and defining a plurality of radial protrusions extending from the shaft up to a periphery of the rotor. The radial protrusions having cavities define a fluid path. A stationary shaft is disposed concentrically within the rotatable shaft wherein an annular space is formed between the stationary and rotatable shaft. A plurality of magnetic segments is disposed on the radial protrusions and the fluid path from within the stationary shaft into the annular space and extending through the cavities within the radial protrusions. | 2010-11-18 |
20100289387 | Rotation detecting apparatus and direct current motor - A rotation detecting apparatus includes a direct-current motor, a power source part, an energization detecting part, and a rotation state detecting part. The direct-current motor is configured so that an inductance between a pair of brushes periodically changes in accordance with a rotation. The power source part applies a power source voltage between the pair of brushes. In the power source voltage, an alternating-current voltage is superimposed on a direct-current voltage. The energization detecting part detects an electric quantity related to the alternating-current voltage applied from the power source part to the direct-current motor. The rotation state detecting part detects at least one of a rotation angle, a rotation direction, and a rotation speed of the direct-current motor based on a change in an amplitude of an alternating-current component in the electric quantity detected by the energization detecting part. | 2010-11-18 |
20100289388 | Drive Device Having an Electric Motor and an Electronic Control System Having a Circuit Carrier - A drive device having an electric motor and an electronic control system for the electric motor, the electronic control system being disposed on a circuit carrier. Provision is made that the circuit carrier is a mechanical component, or part of a mechanical component, of the electric motor. | 2010-11-18 |
20100289389 | CABINET SYSTEM AND METHOD OF ASSEMBLING THE SAME - A front panel, a pair of side panels, a top panel, and a bottom panel connect to form a cabinet. Optionally, the cabinet includes a rear panel. Front panel includes a pair of master keyways and a pair of grooves. Each of side panels has a side key, a pair of side keyways, and a side notch. Each side key connects with one master keyway. Top panel includes a pair of top keys and a top extender. Each top key connects with one side keyway and top extender connects with one groove. Bottom panel includes a pair of bottom keys and a bottom extender. Each bottom key connects with one side keyway and the bottom extender connects with the other groove. | 2010-11-18 |
20100289390 | REINFORCED DEVICE HOUSING - A housing for an electronic device or other object formed from a fiber-in-matrix material. A layered fiber-in-matrix type material, such as CFRP, may be used. A spine made from CFRP may support, and be attached to, a CFRP skin. The CFRP spine may be a unitary frame that imparts strength and rigidity to the overall housing and also form at least some of the corners of the frame. In some embodiments, the spine may be rectangular. The skin may be formed from multiple layers of CFRP type material stacked atop each other. Each layer may be cut at one or more corners to expose at least a portion of the layer beneath. The skin may thus have an overall cross shape, such that each arm of the cross may be wrapped around a different side of the aforementioned rectangular spine. | 2010-11-18 |
20100289391 | HINGE ASSEMBLY AND ELECTRONIC DEVICE USING THE SAME - A hinge assembly includes a spacing member, a first fixing member, and a second fixing member. The spacing member includes two opposite surfaces. The first fixing member is pivotally connected to the spacing member, and is in tight contact with one of the two opposite surfaces of the spacing member. The second fixing member is pivotally connected to the spacing member, and is in tight contact with the other of the two opposite surfaces of the spacing member. An electronic device using the hinge assembly is also provided. | 2010-11-18 |
20100289392 | Reversible wall track system for office furniture - A wall track system is provided with overhead storage cabinets or other furniture components to accommodate mounting of the furniture components in multiple configurations in a minimum of space. This system includes wall tracks which have two opposite side faces with two different slot patterns that accommodate two different mounting orientations for the furniture components. | 2010-11-18 |
20100289393 | Integrated Recycling System - A piece of office furniture includes a body portion. The body portion defines a cavity therein. A plurality of drawers is disposed within the cavity. Each drawer is slidably mounted to the body portion and includes a front door portion affixed thereto. A plurality of removable bins are each disposed in a different one of the plurality of drawers. A cabinet is defined by at least one vertical sub-wall and the body portion. A cabinet door is pivotally affixed to the body portion and is configured to enclose the cabinet. A plurality of labels is associated with each of the door portions and the cabinet door. The plurality of labels indicates which type of material is to be placed in the removable bin corresponding to the door with which each label is associated. | 2010-11-18 |
20100289394 | CABINET HAVING RAILS CAPABLE OF PREVENTING A DRAWER FROM FALLING - A cabinet includes a housing, a drawer, two rails, and two engaging members. The housing includes two side walls, a back wall, and a front opening. The drawer has a bottom surface and is disposed between the side walls. Each rail extends in a front-to-rear direction and has a lateral plate portion, a longitudinal top support face, a longitudinal limit face, a front end block, a connecting face, and a rail groove. The engaging members project downwardly from the bottom surface of the drawer in proximity to a rear end of the drawer, and are movable along the connecting face of one of the rails when the drawer slides on the top support face. The engaging members respectively have protrusions that engage the respective front end blocks when the drawer slides to front ends of the rails, thereby limiting the drawer from being released from the housing. | 2010-11-18 |
20100289395 | DIMMABLE LED LAMP - An LED-powered replacement for the conventional incandescent screw-in light bulb comprises a phosphor coated sphere emitting white light into the same spherical pattern as a frosted incandescent bulb. In one embodiment inside the hollow sphere there is a dielectric cone emitting blue light, which causes the phosphor coating to glow. The blue light comes into the cone from a dielectric totally internally reflecting concentrator (DTIRC), which receives light from a conical reflector surrounding an LED array. The array has blue chips for energizing the phosphor and red chips for supplementing the phosphor light, enabling separate electronic control of the color temperature as well as the overall luminosity of the LED Lamp. Both blue and red chips are controlled by a quantum dimmer. | 2010-11-18 |
20100289396 | LED BULB AND LIGHTING APPARATUS - An object of the present invention is to provide an LED bulb in which temperature of a lighting circuit is suppressed from rising during lighting of an LED so that life time of the lighting circuit is maintained without increasing manufacturing cost of components. According to the invention, an LED module | 2010-11-18 |
20100289397 | SPARK PLUG FOR INTERNAL-COMBUSTION ENGINE AND METHOD FOR MANUFACTURING THE SAME - A spark plug for an internal-combustion engine comprises an attachment fitting | 2010-11-18 |
20100289398 | METHOD FOR PRODUCING SPARK PLUG AND SPARK PLUG - A spark plug ( | 2010-11-18 |
20100289399 | ELECTRON BEAM APPARATUS AND IMAGE DISPLAY APPARATUS USING THE SAME - Deformation of a gate by Coulomb force generated when operating an electron-emitting device is inhibited by appropriately maintaining relationship between film thickness h of the gate and distance L from an outer surface of an insulating member to an inner surface of a concave portion. According to this, in an electron beam apparatus provided with a laminate-type electron-emitting device, the deformation of the gate is prevented to reduce variation in electron emission characteristics, thereby preventing the element from being broken. | 2010-11-18 |
20100289400 | PLASMA DISPLAY PANEL AND METHOD FOR PRODUCING THE SAME - A method for producing a plasma display panel comprising a front panel wherein an electrode, a dielectric layer and a protective layer are formed on a substrate of the front panel, a formation of the dielectric layer comprising: (i) preparing a dielectric material comprising a glass component, an organic solvent and silica particles; (ii) supplying the dielectric material onto the substrate having the electrode thereon, and then allowing the organic solvent contained in the supplied dielectric material to evaporate to form a dielectric precursor layer therefrom; (iii) heating the dielectric precursor layer to form a first dielectric layer therefrom; and (iv) heating the surface of the first dielectric layer as a local heat treatment to form a second dielectric layer to a limited depth from the surface of the first dielectric layer. | 2010-11-18 |
20100289401 | DISPLAY PANEL AND IMAGE DISPLAY APPARATUS - A display panel includes: a vacuum vessel provided with a face plate, a rear plate, and a plurality of plate-like spacers provided between the face plate and the rear plate so that the lengthwise directions thereof are parallel to each other; and a plurality of linear fixing members adhered to a surface of the rear plate on the opposite side from the surface opposing the face plate. Each of the plurality of linear fixing members is adhered to the rear plate by bonding members at mutually prescribed intervals and along the lengthwise direction of the plurality of spacers. | 2010-11-18 |
20100289402 | Display Device - A display device including a first substrate, a second substrate opposite to the first substrate, a fiber layer, a first electrode layer and a second electrode layer is provided. The fiber layer is disposed between the first substrate and the second substrate and includes a plurality of fibers and a display medium disposed therein. The first electrode layer is disposed adjacent to the first substrate, and the second electrode layer is disposed adjacent to the second substrate. The display medium is driven by the change of electric field between the first electrode layer and the second electrode layer to be moved in the fibers for displaying a frame. | 2010-11-18 |
20100289403 | Oxynitride phosphor and production process thereof, and light-emitting device using oxynitride phosphor - An oxynitride phosphor consisting of a crystal containing at least one or more of Group II elements selected from the group consisting of Be, Mg, Ca, Sr, Ba and Zn, at least one or more of Group IV elements selected from the group consisting of C, Si, Ge, Sn, Ti, Zr and Hf, and a rare earth element being an activator R, thereby providing a phosphor which is excited by an excitation light source at an ultraviolet to visible light region and which has a blue green to yellow luminescence color that is wavelength converted. | 2010-11-18 |
20100289404 | Oxynitride phosphor and production process thereof, and light-emitting device using oxynitride phosphor - An oxynitride phosphor consisting of a crystal containing at least one or more of Group II elements selected from the group consisting of Be, Mg, Ca, Sr, Ba and Zn, at least one or more of Group IV elements selected from the group consisting of C, Si, Ge, Sn, Ti, Zr and Hf, and a rare earth element being an activator R, thereby providing a phosphor which is excited by an excitation light source at an ultraviolet to visible light region and which has a blue green to yellow luminescence color that is wavelength converted. | 2010-11-18 |
20100289405 | Light-emitting device and manufacturing method thereof - A light-emitting device of the present invention includes: a light-emitting element; and a phosphor layer containing phosphors that absorb light from the light-emitting element and wavelength-convert the absorbed light to emit light. The phosphor layer has a structure in which the phosphors are disposed on an applied adhesive with a thickness equal to or less than an average particle size of the phosphors. A thickness of the phosphor layer is equal to or less than five times the average particle size of the phosphors, and an occupancy ratio of the phosphors in the phosphor layer is 50% or more. Further, the phosphors disposed on the adhesive has an adjusted particle size. | 2010-11-18 |
20100289406 | 2-AZATRIPHENYLENE MATERIALS FOR ORGANIC LIGHT EMITTING DIODES - Compounds containing 2-azatriphenylene are provided. In particular, compounds containing a 2-azatriphenylene core having an additional aromatic group are provided. The compounds provided may be emissive or non-emissive materials. The compounds may be used in organic light emitting devices, particularly as host materials, hole blocking layer materials, or emitting dopants. Devices comprising 2-azatriphenylene containing compounds may demonstrate improved stability and efficiency. | 2010-11-18 |
20100289407 | LED ROOM LIGHT - Disclosed is a light bulb which utilizes LEDs which replaces an incandescent light bulb in a fixture for incandescent light bulbs. The LED light bulb includes a multi-faceted head on which multiple LEDs are placed, with the multi-faceted head being in contact with heat dissipation structures. The heat dissipation structures include a heat transfer column which extends from the LEDs to the base of the bulb. A removable cover is enclosed which has openings for air circulation within the globe of the light bulb. | 2010-11-18 |
20100289408 | SINGLE PHOTON SOURCE - A photon source capable of emitting, for example, a single photon or a single pair of photons on demand. The photon source may include an excitation region where a single instance of a quantum system is excited using excitation energy. A Stimulated Raman Adiabatic Passage (STIRAP) technique can be used for exciting the quantum system to a desired energy level. The photon source may include a photon emission region physically displaced from the excitation region. A transport device can be used for controllably moving an excited quantum system from the excitation region to the photon emission region. The photon emission region may include a resonant cavity tuned to the de-excitation frequency of the quantum system for inducing de-excitation of the quantum system and emission of a photon. The photon emission resonant cavity may be switchably coupled to an output port by a tunable resonant cavity coupling device. | 2010-11-18 |
20100289409 | PARTICLE BEAM SOURCE APPARATUS, SYSTEM AND METHOD - An ion source is disclosed including: a chamber disposed about a longitudinal axis and containing a gas, a magnetic confinement system configured to produce a magnetic field in a confinement region within the chamber, an electron cyclotron resonance driver which produces a time varying electric field which drives the cyclotron motion of electrons located within the confinement region, the driven electrons interacting with the gas to form a confined plasma. During operation, the magnetic confinement system confines the plasma in the confinement region such that a portion of atoms in the plasma experience multiple ionizing interactions with the driven electrons to form multiply ionized ions having a selected final ionization state. | 2010-11-18 |
20100289410 | Illumination device and control method thereof - An illumination device and a control method thereof are provided. The illumination device includes a fan and a light emitting diode module capable of emitting a light beam. The control method includes: detecting a fan signal of the fan; determining whether an operation of the fan is abnormal according to the fan signal, wherein a driving current of the LED module is reduced when the operation of the fan is determined to be abnormal; and a driving current of the LED module is reduced to a predetermined rang of the normal rated driving current when the fan is determined to be stop according to the fan signal. | 2010-11-18 |
20100289411 | GREENHOUSE SYSTEM - Greenhouse system may comprise an illumination, a sensor, and a controller. The illumination and controller are arranged to vary the intensity and the spectral distribution of the light emitted by the illumination. The emitted light may be pulsed light, the pulse characteristics being variable by the controller in dependency of the output of the sensor. The controller are arranged to interpret the relevant variables measured by the sensor and to assess the actual and/or expected growth of the relevant plants, and to control the intensity and/or the spectral distribution of the light emitted by the illumination. Some sensors may be provided for measuring the intensity and/or spectral distribution of the actual light in the greenhouse, other sensors for measuring plant dimensions of the relevant plants or plant groups. The illumination may comprise a heat collection which can be connected to heating or air conditioning inside or outside the greenhouse. | 2010-11-18 |
20100289412 | Integrated lighting system and method - System and method are provided where a plurality of luminaires, control switches, occupancy detectors, and photocells are connected to a central control module including a user interface which is used for setting up, testing, commissioning and maintaining the system; a memory card interface and associated memory card which can be used to load and save configuration data, update firmware, and log system operation. Lighting system can be set up and tested and then the configuration saved in a portable memory, such as on a memory card which can be transferred to another system where it is read to facilitate faster and easier configuring of the other system to parallel, or to be exactly like, the original system. Data stored on a portable memory can be automatically recognized to perform appropriate actions such as, for example: update configuration, or update firmware. Also provided is switching between different mutually exclusive lighting modes where the lighting of each mode is sequenced such that the second lighting mode is initiated before the first mode is terminated, resulting in a continuity of lighting in the controlled area. Other features include daylight harvesting control with multiple zone dimming and switching, programmable attack and decay dimming rates, the ability to return a system to its previous dimming level after the lights have been turned off, and the ability to start the controlled lights at full light level then dim down to the previous level to ensure the lighting ballast have sufficient voltage to start up. | 2010-11-18 |
20100289413 | ELECTRON INJECTION-CONTROLLED MICROCAVITY PLASMA DEVICE AND ARRAYS - An embodiment of the invention is a microcavity plasma device that can be controlled by a low voltage electron emitter. The microcavity plasma device includes driving electrodes disposed proximate to a microcavity and arranged to contribute to generation of plasma in the microcavity upon application of a driving voltage. An electron emitter is arranged to emit electrons into the microcavity upon application of a control voltage. The electron emitter is an electron source having an insulator layer defining a tunneling region. The microplasma itself can serve as a second electrode necessary to energize the electron emitter. While a voltage comparable to previous microcavity plasma devices is still imposed across the microcavity plasma devices, control of the devices can be accomplished at high speeds and with a small voltage, e.g., about 5V to 30V in preferred embodiments. | 2010-11-18 |
20100289414 | TWO-STAGE BALANCER FOR MULTI-LAMP BACKLIGHT - A two-stage balancer for a multi-lamp backlight is electrically connected to a driving unit through a driving transformer. The two-stage balancer includes a plurality of first balancing transformers, second balancing transformers, and lighting units. Each of the first balancing transformers is electrically connected to the corresponding second balancing transformers to form a two-stage structure. In addition, a primary winding and a secondary winding of the second balancing transformer is electrically connected in series to one lighting unit, respectively, to form a circuit loop. Further, each of the circuit loops is electrically connected in parallel. Whereby the two-stage balancer provides much better current balance between the parallel circuit loops, and outputs a sinusoid-like driving current to increase lighting efficacy and further maintain uniform brightness of the multi-lamp backlight. | 2010-11-18 |
20100289415 | Energy efficient decorative lighting - Energy efficient system for lighting is provided that allows variation of length, density of illumination and positioning. The inventive system is particularly suitable for decorative lighting and seasonal display. The lighting system comprises at least one light string having a plurality of light emitting diodes (LEDS) interconnected to a parallel set of power wires maintaining output voltage within a prescribed range. A direct current (DC) transformer is connected to the parallel set of power wires to convert alternating current (AC) input to DC output to control power to the lighting system at relatively low voltage level and less than about fifteen watts. Multiple LED light strings may be connected to the parallel set of power wires to provide decorative lighting displays of desired length, configuration and density of illumination. Accordingly, the unique system provides decorative lighting that is energy efficient and suitable for low cost manufacture compared with conventional incandescent light strings. | 2010-11-18 |
20100289416 | Lighting devices - Lighting devices capable of being powered by both AC and DC power sources without requiring AC power source to the DC power source conversion are provided, in which a lighting module comprises a plurality of micro-diodes formed on a substrate and a conductive wire pattern connecting to the micro-diodes, wherein the conductive wire pattern has at least three voltage feed points. A selection unit is coupled to a power source and selects at least two of the voltage feed points, such that a portion of the micro-diodes and the power source form at least one loop thereby turning on the micro-diodes in the loop. | 2010-11-18 |
20100289417 | LIGHT-EMITTING DEVICE, METHOD FOR MANUFACTURING THE SAME, DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A light-emitting device is provided which includes: a cathode; an anode; at least one light-emitting layer which is provided between the cathode and the anode and which emits light when a voltage is applied between the cathode and the anode; a cathode terminal which is provided at a portion not in contact with the anode and the light-emitting layer and which supplies electrons to the cathode; and an electron adjust layer which includes a material having insulating properties and which adjusts the amount of electrons supplied from the cathode terminal to the cathode, and in the light-emitting device described above, the cathode is connected to the cathode terminal with the electron adjust layer interposed therebetween. | 2010-11-18 |
20100289418 | ELECTRONIC CIRCUIT FOR DC CONVERSION OF FLUORESCENT LIGHTING BALLAST - Embodiments of an illumination device including LEDs for connection to an existing fluorescent lamp fixture including a conventional ballast described. One illumination device includes protection circuitry configured to protect the illumination device from the ballast current signal, a full-wave rectifier, a smoothing filter electrically coupled to the full wave rectifier, and a current regulator power circuit electrically coupled to the smoothing filter and the LEDS. The current regulator power circuit can include a first switching element configured to operate in response to a first (PWM) ON/OFF control signal; a current controller electrically coupled to a gate of the first switching element, the current controller configured to generate the first PWM control signal; and a current sense resistor electrically coupled to the first switching element and configured to sense the current through the LEDS, wherein the sensed current is fed back to the current controller. | 2010-11-18 |
20100289419 | CIRCUIT ARRANGEMENT FOR OPERATING A LOW-PRESSURE GAS DISCHARGE LAMP AND CORRESPONDING METHOD - A circuit arrangement is provided, which may include an input; an output; an inverter, configured to provide an AC supply voltage from a DC supply voltage; a control device configured to drive the inverter, the control device being configured to initiate a preheating phase once a preheating criterion has been met; a resonant circuit having a resonant inductor and having a resonant capacitor; and a transformer configured to preheat electrodes of a gas discharge lamp; wherein the primary winding of the transformer is connected in series with the resonant capacitor and is connected directly to the reference potential of the control device, and an electrical switch is coupled in parallel with the primary winding of the transformer, which switch has a control connection, which is coupled to the control device being configured to transfer the electrical switch into its electrically conducting switching state once the starting criterion has been met. | 2010-11-18 |
20100289420 | LIGHTING DEVICE AND DISPLAY DEVICE - A lighting device ( | 2010-11-18 |
20100289421 | STARTING AN ELECTRONIC BALLAST - A ballast including an H-bridge type inverter for driving a lamp and a filter circuit that includes a buck inductor is disclosed. The buck inductor is a primary winding of a transformer, and a secondary winding of the transformer provides power to a controller of the ballast. The controller operates the inverter in various pre-ignition modes of operation such that prior to ignition, the open circuit voltage (OCV) (i.e., voltage across the lamp) and buck inductor current are controlled to transfer sufficient power from the primary of the transformer to the secondary winding of the transformer to power the controller. No switches of the inverter are turned on while there is a non-zero current through the filter circuit. | 2010-11-18 |
20100289422 | PIEZOELECTRIC TYPE RESONANCE HIGH-VOLTAGE LIGHT-STARTING CIRCUIT - A piezoelectric type resonance high-voltage light-starting circuit, wherein, the intrinsic capacitance characteristic of a piezoelectric transformer is utilized as a piezoelectric capacitor, and said piezoelectric transformer connected to a light tube is connected in series with an independent inductor, thus forming a resonance type series-connected or parallel-connected light-starting circuit, hereby achieving the efficacy of small leakage current, low operating temperature, and high voltage endurance, as such raising the light-starting efficiency. Furthermore, in the application of said circuit mentioned above, output voltage is further amplified through a booster transformer, thus achieving its characteristics of high illuminance. When driving said plurality of light tubes, a fixed frequency is utilized in making an intrinsic impedance of an equivalent circuit containing said piezoelectric capacitor to be fixed at a constant value, thus current flowing in each of said light tubes is equivalent, and achieving balance of currents in said plurality of light tubes. | 2010-11-18 |
20100289423 | ELECTRONIC BALLAST WITH STEP UP/DOWN POWER FACTOR CORRECTION DC-DC CONVERTER SUITABLE FOR HIGH INPUT VOLTAGE APPLICATIONS - Electronic ballasts and buck-boost DC-DC converters therefor are presented with a buck converter with two switching devices connected with two capacitances and two diodes to limit the individual switching device voltages to around half the converter DC input voltage or less. | 2010-11-18 |
20100289424 | Methods and Circuits for LED Drivers and for PWM Dimming Controls - The present invention relates to methods for LED driver applications, comprising the steps: providing an input voltage, V | 2010-11-18 |
20100289425 | BACKLIGHT DRIVING SYSTEM UTILIZING ONE PWM CONTROLLER TO CONTROL TWO BACKLIGHT UNITS SEPARATELY - A backlight driving system comprises a first inverter circuit, a second inverter circuit, a pulse width modulation (PWM) controller, a frequency regulator and a switch circuit. The pulse width modulation (PWM) controller generates an illumination signal to control the first and second inverter circuits to illuminate first and second backlight units in response to a first enable signal, and generates a maintaining signal to control the first and second inverter circuits to maintain stable lighting of the first and second backlight units in response to a first feedback signal. The frequency regulator controls the PWM controller to generate the illumination signal and the maintaining signal in response to a second enable signal and a second feedback signal, respectively. The switch circuit connects the PWM controller to the second inverter circuit in response to the second enable signal. | 2010-11-18 |
20100289426 | ILLUMINATION DEVICE - The light source portion is provided with a plurality of LED circuits having a plurality of LEDs. A plurality of drive circuits are provided which cause the LEDs to be lit per LED circuit in response to input of PWM signals. The PWM control circuit outputs PWM signals per drive circuit in response to input of lighting control signals and simultaneously make the output timings of the PWM signals different from each other per drive circuit. By making the output timings of the PWM signals different, the period of time during which the LEDs are turned off can be reduced as the entirety of the light source portion, and the occurrence of flickering is reduced without increasing the lighting frequency. | 2010-11-18 |
20100289427 | Light emitting and lasing semiconductor methods and devices - A method for producing light emission from a two terminal semiconductor device with improved efficiency, includes the following steps: providing a layered semiconductor structure including a semiconductor drain region comprising at least one drain layer, a semiconductor base region disposed on the drain region and including at least one base layer, and a semiconductor emitter region disposed on a portion of the base region and comprising an emitter mesa that includes at least one emitter layer; providing, in the base region, at least one region exhibiting quantum size effects; providing a base/drain electrode having a first portion on an exposed surface of the base region and a further portion coupled with the drain region, and providing an emitter electrode on the surface of the emitter region; applying signals with respect to the base/drain and emitter electrodes to obtain light emission from the base region; and configuring the base/drain and emitter electrodes for substantial uniformity of voltage distribution in the region therebetween. | 2010-11-18 |
20100289428 | Controllable Retroffited LED Panel Lighting - The present invention involves a lighting kit adapted for installation into a conventional fluorescent lighting unit having a fluorescent socket and a ballast disposed in the lighting unit. At least one elongated body has fixture ends configured to engage a fluorescent socket. The elongated body supports a plurality of light emitting diodes (LEDs). A control unit, capable of receiving exterior control signals, electrically connects the LEDs to a power source for selectively dimming the LEDs, and is adapted to be mounted in place of the ballast. Dimming may be accomplished by control circuitry that recognizes repeated switching of a power source, and/or by a dipswitch on the LED device that sets the dim level. A method of retrofitting a fluorescent housing unit involves installing a LED device in the fluorescent housing unit and mounting an LED driver in the location configured to receive a conventional fluorescent ballast. | 2010-11-18 |
20100289429 | METHODS OF AND DRIVING UNITS FOR DRIVING A GAS DISCHARGE LAMP - Methods of driving a gas discharge lamp ( | 2010-11-18 |
20100289430 | Universal Lighting Source Controller with Integral Power Metering - A universal lighting source controller including integral power metering for use with substantially all light source types including fluorescent, incandescent, magnetic low voltage, electronic low voltage, light emitting diode (“LED”), high density discharge (“HID”), neon, and cold cathode. The lighting source controller includes a line voltage dimming circuit that can control the intensity of light sources in a lighting circuit and measures the actual amount of power consumed by the light sources. The line voltage dimming circuit includes a triac circuit for controlling this intensity and current and voltage detection circuits for measuring the power consumption. The lighting source controller can also include low voltage dimming circuits to provide a control signal to light sources having electronic or magnetic dimming ballasts to set the intensity of these light sources. | 2010-11-18 |
20100289431 | Dimming Control Method for Display - The present disclosure provides a dimming control method for a display having a light-emitting device which includes: a first light-emitting body including an active layer generating a first light by recombination of electrons and holes; and a second light-emitting body excited by the first light and emitting a second light having a longer wavelength than the first light, the dimming control method including: controlling the power which will be supplied to the light-emitting device according to a dimming request; and adjusting the brightness of the display according to the controlled power using the second light-emitting body containing a first fluorescent material having a characteristic that chromaticity coordinates are shifted in a first direction according to the power control and a second fluorescent material having a characteristic that chromaticity coordinates are shifted in a second direction opposite to the first direction according to the power control. | 2010-11-18 |
20100289432 | Light emitting apparatus and control method thereof - A light emitting apparatus and a control method thereof are provided. The light emitting apparatus has a semiconductor device capable of emitting light, and the control method includes the following descriptions. A driving power of the semiconductor device is reduced to an ideal power stepwise and gradually. After every time the driving power of the semiconductor device is reduced, the semiconductor device continually emits the light by the reduced driving power within a predetermined time. | 2010-11-18 |
20100289433 | Clip light - A clip light, for detachably mounting the clip light to a visor of a cap, includes a light arrangement and a detachable clip member. The light arrangement includes a light housing and a light device supported within the light housing, wherein the detachable clip member is detachably coupling with the light housing, wherein the detachable clip member is adapted to be detached for replacing to another type of clip member for different purposes. The detachable clip member is rotatably coupling with the light housing, such that a projecting angle of the light from the light source is adapted to be adjusted via a rotation manner. | 2010-11-18 |
20100289434 | Assembly for Doorway Illumination - An assembly for doorway illumination, the doorway having a door jamb and a door, the assembly for doorway illumination including an electrical circuit having first, second, and third electrical switches, the first and second electrical switches, upon closure of the third electrical switch, being electrically parallel to each other, and the first and second electrical switches, upon opening of the third electrical switch, being electrically isolated from each other; a base supporting the first switch; a door contacting spring biased push button adapted for alternatively closing and opening the first electrical switch; an electric torch including the second electrical switch; a plurality of “C” clips adapted for alternatively attaching and releasing the electric torch to and from the base; and a plurality of electrical contacts adapted for, upon the alternative torch attaching and releasing, alternatively closing and opening the third electrical switch. | 2010-11-18 |
20100289435 | Deep Ultraviolet Semiconductor Optical Device - A large-area and high-luminance deep ultraviolet light source device is provided under circumstances where the scales of existing mercury lamps used as ultraviolet light sources cannot be reduced and light-emitting diodes of 365 nm or less do not reach the practical level. The deep ultraviolet light source device comprises at least an anode substrate having an ultraviolet phosphor thin film doped with rare-earth metal ions such as gadolinium (Gd) ions and containing with aluminum nitride as the host material, a cathode substrate having a field electron emission material thin film, a spacer for holding the anode substrate and the cathode substrate opposite to each other and maintaining the space between the substrates in a vacuum atmosphere, and a voltage circuit for applying an electric field to the space between the anode substrate and the cathode substrate. Light is emitted by injecting electrons from the field electron emission material thin film into the ultraviolet phosphor thin film by applying the electric field to the space between the substrates and maintaining the space between the anode substrate and the cathode substrate as a vacuum channel region. | 2010-11-18 |
20100289436 | LOW-INJECTION ENERGY CONTINOUS LINEAR ELECTRON ACCELERATOR - This invention relates to continuous standing-wave linear electron accelerator ( | 2010-11-18 |
20100289437 | ELECTROSTATIC ION ACCELERATOR ARRANGEMENT - An arrangement with radiation cooling of the anode, which avoids the need for complex additional cooling measures, is proposed for an electrostatic ion accelerator arrangement in which the thermal power loss which is not negligible occurs at the anode, which is arranged in an ionization chamber, during operation. | 2010-11-18 |
20100289438 | BI-POWER MOTOR CONTROLLING SYSTEM AND MOTOR CONTROLLING APPARATUS THEREOF - A bi-power motor controlling system includes a motor, a system apparatus and a motor controlling apparatus, which is electrically connected with the motor and system apparatus respectively. The system apparatus has a rotational-speed target value for determining the targeted rotational speed of the motor. In addition, the system apparatus outputs a first power and a second power to the motor and the motor controlling apparatus, respectively. The motor controlling apparatus detects the motor to obtain a first rotational-speed value of the motor, and then adjusts the rotational speed of the motor to a second rotational-speed value according to the first rotational-speed value. Then, the motor controlling apparatus further generates a rotational-speed feedback signal to the system apparatus. The system apparatus adjusts the outputted first power in accordance with the rotational-speed feedback signal to make the rotational speed of the motor reach the rotational-speed target value. | 2010-11-18 |
20100289439 | DRIVING CONTROLLER FOR AC MOTOR - An object is to provide a driving controller for an AC motor that can prevent generation of an excessive voltage between lines of a motor and between contacts of a motor cut-off contactor and a continuous arc between contacts of the motor cut-off contactor, regardless of the type of a fault occurred, even when a phase in which a current zero point is not generated and a phase in which a current zero point is generated coexist in a fault current that flows between an inverter and the motor. A control unit is configured to open a motor cut-off contactor not at a time when a state of a detected current is determined to be abnormal but at a time when the state of the current is determined to be normal, even when a basic contactor-close command MKC0 becomes off (L level). | 2010-11-18 |
20100289440 | Active Pull-Up System - An active pull-up system for use with a motor is described. The active pull-up system comprises: a first resistor coupled to an Output node; a first switch and a second resistor coupled in parallel with the first resistor, wherein the first switch is in series with the second resistor; a latch coupled to the first switch for either keeping the first switch open or closing the first switch in response to receiving a closing signal; and a threshold comparator coupled between the output node and the latch, wherein the threshold comparator transmits the closing signal when the output node exceeds a threshold value, which actively pulls up the output node. | 2010-11-18 |
20100289441 | BI-POWER MOTOR CONTROLLING APPARATUS - A bi-power motor controlling apparatus, which is electrically connected with a motor, includes a driver IC having a first pin and a second pin. The first and second pins are used to receive a first power and a second power, respectively, from outside. The second power is supplied to the driver IC, and the first power is supplied to the motor for controlling the rotational speed of the motor. | 2010-11-18 |
20100289442 | BRUSHLESS MOTOR POSITION DETECTION DEVICE - A brushless motor position detection device has a set of first Hall elements (main Hall ICs | 2010-11-18 |
20100289443 | Limiting Peak Electrical Power Drawn By Mining Excavators - The maximum electrical power drawn from an electrical power source by a mining excavator comprising electric motors is reduced by supplying supplementary electrical power from an electrical energy storage unit. The input electrical power drawn by the mining excavator is cyclic. An upper limit is set for the electrical power drawn from the electrical power source. When the input electrical power drawn by the mining excavator exceeds the upper limit, electrical power is supplied by the electrical energy storage unit, such as an ultracapacitor bank. The ultracapacitor bank may be charged by the electrical power source during off-peak intervals. Electrical power generated by electrical motors operating in a regeneration interval may also be recaptured and stored in the electrical energy storage unit. | 2010-11-18 |
20100289444 | DRIVER CIRCUIT - A stepping motor includes two coils and has supply currents to the two coils with different phases so that a rotor is rotated by the two coils. During a period where one coil is in a high impedance state, an induced voltage generated at that coil is detected. An output control circuit controls the magnitude of motor drive current supplied to the two coils in accordance with the detected induced voltage state. Then, prior to entering the high impedance state from the drive state, a short-circuit period is provided for short circuiting both terminals of the coil. | 2010-11-18 |
20100289445 | METHOD AND HARDWARE SYSTEM FOR DRIVING A STEPPER MOTOR IN FEED-FORWARD VOLTAGE MODE - A method of driving a stepper motor in a feed-forward voltage mode may include for a desired speed for the stepper motor setting an amplitude of a sinusoidal phase voltage of the stepper motor to be equal to a sum of an expected back-electromotive force (BEMF) amplitude estimated as a junction of the desired speed, and a product of a desired phase current amplitude and an estimated absolute value of an impedance of the stepper motor. | 2010-11-18 |
20100289446 | METHOD AND APPARATUS FOR PROVIDING CHARGING INFORMATION REGARDING PORTABLE TERMINAL WITH SOLAR CELL - A method and apparatus provides charging information regarding devices such as a portable terminal with a solar cell. The solar cell charges the battery of the portable terminal with the highest charging efficiency at an optimal charging angle. The optimal charging angle is determined according to the location information regarding the portable terminal and time information. When the solar cell performs a charging process with the highest charging efficiency, the portable terminal provides a user with an average charging efficiency and the help containing a user's manual of the solar cell. The average charging efficiency is determined according to environmental conditions, such as temperature, humidity, weather conditions, etc. | 2010-11-18 |
20100289447 | System and method for power management of energy storage devices - A power management system for batteries includes: a controller that controls a charger, switch matrix, and outputs, using algorithms to optimize system states based on a fuel gauge and learned conditions; a charger, which converts various inputs into charge voltage; a fuel gauge, which calculates remaining charge and battery health so the controller can effectively manage the battery and extend run-time; and a switch matrix providing management at individual cell level so that cell performance/health can be monitored. Cells can be combined dynamically in series and/or in parallel, and “bad” cells can be removed from service. A related method is also disclosed. | 2010-11-18 |
20100289448 | Induction Charging Device - An induction charging device for charging an energy accumulator of a mobile electric device is provided. The device includes a coil for energy transmission; and a control for energy transmission. The control is connected to a capacitor with a modifiable capacitance, and the capacitor is designed such that its capacitance changes as a function of whether the mobile electric device is in a charging position or not. | 2010-11-18 |
20100289449 | WIRELESS ENERGY TRANSFER - An apparatus ( | 2010-11-18 |
20100289450 | NON-CONTACT CHARGER CAPABLE OF WIRELESS DATA AND POWER TRANSMISSION AND RELATED BATTERY PACK AND MOBILE DEVICE - Disclosed is a non-contact charger. The present invention provides a non-contact charger capable of wireless data communication and power supply between a non-contact charger capable of computer UBS communication and a charging battery-pack of a mobile device, using an induced electromotive force, thereby to enable data communication and power supply at the same time and to make good signal transmission without other poor contacts in the contact transmission. | 2010-11-18 |
20100289451 | Battery Charging Control Methods, Electric Vehicle Charging Methods, Battery Charging Apparatuses And Rechargeable Battery Systems - Battery charging control methods, electric vehicle charging methods, battery charging apparatuses and rechargeable battery systems are described. According to one aspect, a battery charging control method includes accessing information regarding a presence of at least one of a surplus and a deficiency of electrical energy upon an electrical power distribution system at a plurality of different moments in time, and using the information, controlling an adjustment of an amount of the electrical energy provided from the electrical power distribution system to a rechargeable battery to charge the rechargeable battery. | 2010-11-18 |
20100289452 | POWER SUPPLY APPARATUS FOR VEHICLES - A load and a first storage battery are connected to a generator, and a second storage battery is connected to the generator via a DC/DC converter, wherein a controller connected to the DC/DC converter, receiving a regeneration signal emitted from outside, controls the DC/DC converter so that the voltage of an input/output terminal becomes the first target voltage that is lower by the first fixed value than the voltage of input/output terminal to which the generator is connected in the DC/DC converter at the time in order to charge the second storage battery, and when regeneration signal reception is ended, the DC/DC converter is controlled so that the voltage of the input/output terminal becomes the second target voltage that is higher by the second fixed value than the voltage of input/output terminal at the time, and thereby, it is possible to enhance the regenerative power recovering efficiency irrespective of conditions during braking. | 2010-11-18 |
20100289453 | VEHICLE POWER SYSTEM - A vehicle power system may include a plurality of series connected power storage units configured to supply power to move a vehicle, and at least one flyback switch mode converter having a plurality of primary windings and a single secondary winding. Each of the primary windings may be configured to be selectively electrically connected with a respective one of a set of the power storage units. The secondary winding may be electrically connected with a different set of the power storage units. | 2010-11-18 |
20100289454 | SECONDARY BATTERY REMAINING CAPACITY ESTIMATING APPARATUS - A secondary battery remaining capacity estimating apparatus basically includes a secondary battery ( | 2010-11-18 |
20100289455 | BATTERY-POWERED APPARATUS, METHOD OF CONTROLLING THE APPARATUS, PROGRAM FOR IMPLEMENTING THE METHOD, AND STORAGE MEDIUM STORING THE PROGRAM - A battery-powered apparatus which makes it possible to perform battery check with accuracy irrespective of whether a battery is used as an internal battery or an external battery and make the end voltages of the internal battery and the external battery coincide with each other. It is determined whether the battery or an accessory having the battery incorporated therein has been attached to the apparatus, and a predetermined voltage threshold level is set based on the determination result. The voltage value of the battery or the accessory having the battery incorporated therein is detected, and the detected voltage value and the voltage threshold level are compared with each other to decide whether or not it is possible to drive the apparatus. | 2010-11-18 |
20100289456 | Method and Apparatus for Handling a Charging State in a Mobile Electronic Device - The present invention is directed at a method of handling a device charging state for a Universal Serial Bus (USB) connected mobile electronic device comprising the steps of sensing a presence of a bus voltage; sensing an enumeration acknowledgement signal between the device and a USB host; and transmitting a signal to instruct the device to enter the device charging state. | 2010-11-18 |
20100289457 | ENERGY EFFICIENT AND FAST CHARGE MODES OF A RECHARGEABLE BATTERY - A method of providing power to an electronic device in an energy-efficient manner includes transitioning between power states corresponding to charging and discharging a battery. The state of charge of the battery is detected. Upon detecting a high threshold state of charge, an external power source such as an AC-to-DC adapter is disabled, and the battery to provides primary power to the electronic device. Upon a low threshold state of charge, the AC-to-DC adapter is controlled to provide a high current output to charge the battery and provide primary power to the electronic device. The power states, when cycled over time based on the state of the battery, provide for an energy-efficient method of powering the electronic device. | 2010-11-18 |
20100289458 | CAPACITOR ELECTROLYTE - A capacitor for an implantable medical device is presented. The capacitor includes an anode, a cathode, a separator therebetween, and an electrolyte over the anode, cathode, and separator. The electrolyte includes ingredients comprising acetic acid, ammonium acetate, phosphoric acid, and tetaethylene glycol dimethyl ether. The capacitor has an operating voltage ninety percent or greater of its formation voltage. | 2010-11-18 |
20100289459 | POWER SUPPLY DEVICE - Provided is a power supply device including: a magneto generator ( | 2010-11-18 |
20100289460 | ALTERNATOR CONTROLLING APPARATUS - Provided is an alternator controller that sets a target current value based on a target voltage as a control reference of an alternator mounted on a vehicle, and controls the alternator based on the set target current value. The alternator controller includes a filter processing unit that performs filter processing of a target power generation torque as a conversion physical amount used until the target current value is set from the target voltage. The filter processing unit performs a filter processing that attenuates or removes a frequency component f of the pitch resonance frequency of the vehicle among the waveforms of the target power generation torque. Thus, it is possible to surely suppress fluctuations of a vehicle behavior attributed to torque fluctuations of an alternator load torque. | 2010-11-18 |
20100289461 | BRIDGELESS POWER FACTOR CORRECTOR WITH LOGIC CONTROL - The present invention discloses a bridgeless active power factor corrector with a logic control comprising a high frequency switch controller, a boost inductor, an output filtering capacitor, two boost transistor modules, two boost diodes, two AC input voltage polarity detectors, and two low frequency switch drivers. With a coupling signal, the two AC input voltage polarity detectors respectively control the two low frequency switch drivers in conjunction with the high frequency switch controller to drive the two boost transistor modules with a logic control so that the inductor current releasing electric energy from the boost inductor can flow through the channels of the two boost transistor modules to effectively reduce the body diode conduction loss. | 2010-11-18 |
20100289462 | CALIBRATION APPARATUS AND CALIBRATION METHOD THEREOF - A calibration apparatus includes: a first circuit arranged for generating a reference voltage with respect to a first circuit element according to a reference current flowing to the first circuit element, a second circuit arranged for generating an output voltage according to a tunable current, and an adjusting circuit coupled to the first circuit and the second circuit for adjusting the tunable current to a target current value according to the reference voltage and the output voltage. | 2010-11-18 |
20100289463 | PRIMARY-SIDE FEEDBACK CONTROL DEVICE AND RELATED METHOD FOR A POWER CONVERTER - A primary-side feedback control device for a power converter includes a control unit, a comparator and a sample-and-hold unit. The control unit is utilized for generating a pulse signal according to a feedback signal for controlling on and off states of a switching transistor of the power converter. The comparator is coupled to an auxiliary winding of a primary side of the power converter, and is utilized for generating at least one control signal according to a voltage on the auxiliary winding. The sample-and-hold unit is coupled to the auxiliary winding, the comparator and the control unit, and is utilized for generating the feedback signal according to the voltage on the auxiliary winding and the at least one control signal. | 2010-11-18 |
20100289464 | POWER SUPPLY CIRCUIT - A power supply circuit comprises a power transistor, differential amplifier, an I/V converter circuit, and an inverting amplifier, wherein the differential amplifier comprises a first current path in which a first resistor element, a first current mirror transistor, and a first control transistor are connected in series, and a second current path in which a second resistor element, a second current mirror transistor, and a second control transistor are connected in series, and the power supply circuit comprises a phase compensating capacitor element connected in parallel with the inverting amplifier, and a ripple removal rate improving capacitor element which is connected between ground and a connection point between the first resistor element and the first current mirror transistor, or between the ground and a connection point between the second resistor element and the second current mirror transistor. | 2010-11-18 |
20100289465 | TRANSIENT LOAD VOLTAGE REGULATOR - Systems and methods providing for improved voltage regulation of a supply voltage for an integrated circuit are described herein. The voltage regulator circuit includes a feedback circuit coupled to a first current path and adapted to maintain a gate voltage of a feedback transistor substantially constant. A pass device is coupled to a second current path and adapted to receive a signal with a magnitude based on first and second currents supplied by first and second current sources to the second current path. In an embodiment, the first current is a substantially constant current and the second current has a magnitude based on a magnitude of the voltage at the feedback transistor gate and a magnitude of a voltage at an output of the voltage regulator circuit coupled to the pass device. | 2010-11-18 |
20100289466 | CLOSED LOOP NEGATIVE FEEDBACK SYSTEM WITH LOW FREQUENCY MODULATED GAIN - A power supply apparatus and method of regulating is provided. A clock generator circuit is configured for generating a clock signal at a predetermined frequency. An amplifier circuit is coupled with the clock generator circuit. The amplifier circuit includes a gain circuit coupled with the clock generator circuit. The amplifier circuit is configured to receive the clock signal at a switching element of the gain circuit. A controller circuit is configured for receiving a modulated error signal of the amplifier circuit and is configured for generating a pulse width modulated signal for controlling a duty cycle of the switching circuit. The switching circuit is configured for receiving the modulated error signal. The error signal is modulated using the clock signal to vary a gain value of the gain circuit according to the predetermined frequency. An output circuit is coupled with the switching circuit and is configured for generating a regulated voltage signal. The controller circuit uses the modulated error signal to substantially reduce harmonic distribution in a switching frequency of the switching circuit. Harmonic distribution in the switching circuit can be reduce by 10.0 db or greater. | 2010-11-18 |
20100289467 | POWER SUPPLY CIRCUIT AND METHOD THEREOF - In a normal mode, the power supply is fed back in a close loop, but in a power saving mode, the power supply is fed back in an open loop. When it is detected that the power supply is continuously fed back in the open loop and in a substantially zero output status, the power supply circuit enters a power down status. If the back-stage circuit needs power supply again, then the feedback is switched to the close loop and the power supply circuit enters the normal mode. | 2010-11-18 |
20100289468 | Voltage Regulator and Method for Voltage Regulation - A voltage regulator ( | 2010-11-18 |
20100289469 | START-UP DETECTION IN A DIMMER CIRCUIT - Disclosed is an inductive load detection circuit for detecting the presence of an inductive load on a dimmer circuit. The detection circuit provides for enhanced detection of the inductive load by detecting voltage ringing resulting from a turn-off of a switching element in the circuit. The ringing can be enhanced by providing a faster turn-off rate in an initial period than a turn-off rate in a steady state period. | 2010-11-18 |
20100289470 | Power Supplying Method for LCD Display Device and Power Supply Device - A power supply device of a LCD display device comprising an AC rectifier; a square wave generator; an AC voltage converting module, coupled to the square wave generator, for providing an AC voltage to a backlight module of the LCD display device; and a plurality of DC voltage converting modules, for providing a plurality of voltage sources to a plurality of load circuits of the LCD display device, each DC voltage converting module comprising a control circuit for masking off the first oscillating signal, to generate a second oscillating signal according to a feedback signal of a corresponding load circuit; a voltage converting unit, coupled to the control circuit and the load circuit, for transforming the second oscillating signal into a voltage source for the load circuit; and a feedback control unit, coupled to the control circuit and the load circuit, for generating the feedback signal. | 2010-11-18 |
20100289471 | POWER CONTROL DEVICE, POWER SUPPLY DEVICE, AND POWER CONTROL METHOD - A power control device for performing switching control for an output voltage of a power supply device includes a signal generation circuit for comparing a difference between a value of the output voltage and a value of a first reference voltage with a value of a second reference voltage, and for stopping the switching control when a value of the difference is less than or equal to the value of the second reference voltage, and an adjuster circuit for adjusting the second reference voltage based on a ratio between a value of an input voltage and the value of the output voltage. | 2010-11-18 |
20100289472 | LOW DROPOUT VOLTAGE REGULATOR WITH LOW QUIESCENT CURRENT - The disclosure relates to a low dropout voltage regulator comprising a regulation transistor to supply an output voltage from an input voltage, a gate control stage to supply a gate voltage to the regulation transistor, and an error amplifier to supply a control voltage to a control terminal of a control transistor. The low dropout voltage regulator also comprises a quiescent current control circuit to limit a quiescent current flowing through the gate control stage when the input voltage approaches the output voltage and causes the regulation transistor to enter into an ohmic conduction mode. The quiescent current control circuit comprises a current source providing a reference current and is configured to control the quiescent current by current-mirror effect based upon the reference current. | 2010-11-18 |
20100289473 | CURRENT SENSE CIRCUIT AND SWITCHING REGULATOR USING THE SAME - A current sense circuit for use with a switching regulator including a first transistor, connected to an inductor, configured to switch a current flowing through the inductor from a power supply; and a second transistor, connected to a node to which the inductor and the first transistor are connected, configured to be turned on during a part of an OFF period of the first transistor. The current sense circuit includes a current generator configured to generate a sense current corresponding to a current flowing through the first transistor; a hold circuit configured to output a voltage corresponding to the sense current during an ON period of the first transistor, and to hold and output the voltage corresponding to the sense current during the OFF period of the first transistor; and an output transistor configured to generate a current corresponding to the voltage output by the hold circuit. | 2010-11-18 |
20100289474 | CONTROLLERS FOR CONTROLLING POWER CONVERTERS - In one embodiment, a controller includes a first comparator, a second comparator and a control unit coupled to the first and second comparators. The first comparator is operable for comparing a first sense signal indicative of an output current flowing through an energy storage component of the power converter with a first threshold, and for generating a first comparison signal. The second comparator is operable for comparing a second sense signal indicative of the output current with a second threshold and for generating a second comparison signal. The control unit is operable for turning a switch of the power convertor on and off according to the first and second comparison signals. The energy storage component is coupled to a power source for storing energy from the power source if the switch is turned on, and is decoupled from the power source for releasing stored energy to a load if the switch is turned off. | 2010-11-18 |
20100289475 | LOW DROPOUT REGULATOR COMPENSATION CIRCUIT USING A LOAD CURRENT TRACKING ZERO CIRCUIT - Disclosed is a low dropout regulator that uses a load current tracking zero circuit to stabilize a feedback loop to prevent oscillations. The load current tracking zero circuit senses the DC component of the current flowing through the pass transistor of the low dropout regulator and uses the pass transistor current signal to control a multiplicative factor. The multiplicative factor multiplies the AC variations in the output voltage to generate the zero current. | 2010-11-18 |
20100289476 | METHOD AND APPARATUS FOR REGULATING A POWER SUPPLY OF AN INTEGRATED CIRCUIT - Disclosed is a circuit for adjusting a voltage supplied to an IC by a power supply circuit that produces a regulated-output voltage based on an output-control signal generated by a resistive voltage divider. The circuit includes a PVT detector configured to generate an interface control signal and an interface circuit (i) connected to PVT detector and to the resistive voltage divider and (ii) configured to adjust its resistance in response to the interface control signal. Adjusting the resistance of the interface circuit causes the voltage of the output-control signal to be adjusted, thus causing the power supply circuit to adjust the regulated output voltage. | 2010-11-18 |
20100289477 | MEASURING DEVICE AND MEASURING METHOD FOR MEASURING THE ENVELOPE POWER AND THE MEAN-POWER VALUE - A measuring device for measuring the envelope power and the mean-power value of a high-frequency signal. The measuring device includes a detector for detecting the high-frequency signal and for generating an analog detector signal, an analog/digital converter for generating a digital signal and an evaluation device for evaluating the digital signal. A dither supply device for the supply of a dither signal is disposed between the detector and the analog/digital converter, and a dither elimination device for eliminating the dither signal is disposed between the analog/digital converter and the evaluation device. The dither supply device supplies a different dither signal for the measurement of the envelope power than for the measurement of the mean-power value. | 2010-11-18 |
20100289478 | MODELING AND CALIBRATING A THREE-PORT TIME-DOMAIN REFLECTOMETRY SYSTEM - A three-port TDR front end comprises numerous components. An exemplary three-port TDR front end is a DSL modem. Information-bearing TDR signals are distorted as they pass through these components. With a perfect model of the response of its front-end, a TDR system usually can compensate for the effects of its front-end. In reality, however, the electrical characteristics of each component vary from design-to-design, board-to-board, and slowly over time. The result is imperfect knowledge about the true response of the front-end, errors in the model of the front-end, and degraded TDR performance. At least for this reason it is important to precisely calibrate the response of the TDR front-end through the use of a TDR modeling system. | 2010-11-18 |