48th week of 2011 patent applcation highlights part 20 |
Patent application number | Title | Published |
20110291541 | LIGHT EMITTING DEVICE - According to one embodiment, a light emitting device includes a first lead, a light emitting element, a second lead and a molded body. The first lead includes a die pad portion having a major surface and a recess provided in the major surface, a bent portion bent toward above the major surface, and a thermally conductive portion extending outward from the die pad portion. The first lead is provided with a slit at an end of a fold. The light emitting element is bonded to a bottom surface of the recess. The second lead with one end portion is opposed to one end portion of the first lead. The molded body covers the light emitting element, the bent portion, the die pad portion, the thermally conductive portion, and the one end portion of the second lead, penetrates through the slit, and is made of a resin. | 2011-12-01 |
20110291542 | LED BULB - An LED bulb includes a connector for electrically connecting with a power supply, a heat sink disposed on the connector, and a plurality of LEDs mounted the heat sink. The heat sink includes a base, a tube extending downwardly from a first face of the base, and a plurality of fins extending outwardly from an outer circumference of the tube. The LEDs are attached on a second face of the base. The base defines a plurality of through tunnels extending through the base from the first face to the second face of the base. | 2011-12-01 |
20110291543 | IGNITER ASSEMBLY INCLUDING ARCING REDUCTION FEATURES - A corona igniter ( | 2011-12-01 |
20110291544 | GAS BARRIER SUBSTRATE, PACKAGE OF ORGANIC ELECTRO-LUMINENSCENT DEVICE AND PACKAGING METHOD THEREOF - A gas barrier substrate including a first gas barrier layer, a substrate, and a second gas barrier layer is provided. The first gas barrier layer has a central bonding surface bonded with the substrate and a peripheral boding surface surrounding the central bonding surface. The second gas barrier layer entirely covers the substrate and the first gas barrier layer. The second gas barrier layer is bonded with the substrate and the peripheral boding surface of the first gas barrier layer, wherein a minimum distance from an edge of the substrate to an edge of the first gas barrier layer is greater than a thickness of the first gas barrier layer. | 2011-12-01 |
20110291545 | ELECTRON TUBE WITH OPTIMIZED INJECTION OF THE ELECTRON BEAM INTO THE TUBE - An electron tube includes a microwave structure, an electron gun having a cathode-wehnelt assembly, with axis for providing a linear electron beam along the same axis in a circular cylindrical passage with axis of the microwave structure, the cathode comprising a centre of rotation of the beam on the said axis of the cathode. The electron gun and the microwave structure each comprise portions of spherical surfaces in contact inscribed on one and the same sphere of radius centred on the centre of the cathode so as to form a swivel for angular adjustment of the axis of the cathode and to make the axis of the electron beam coincide with the axis of the circular cylindrical passage of the microwave structure. Applications include microwave electron tubes such as travelling wave tubes and klystrons. | 2011-12-01 |
20110291546 | LOW PRESSURE DISCHARGE LAMPS WITH COATED INNER WIRES FOR IMPROVED LUMEN MAINTENANCE - Disclosed herein is a low pressure discharge lamp having a coating disposed upon at least a portion of inner lead-in wires, wherein the coating comprises refractory nanoparticles. Also disclosed herein, in particular, are fluorescent lamps having a coating disposed upon at least a portion of inner lead-in wires, the coating comprising refractory oxide nanoparticles having a median primary particle size of less than about 70 nm, with a thickness of from about 0.5 micrometer to about 10 micrometer. Disclosed advantages may include lessened end discoloration over the operational lifetime of the lamp, enhanced lumen maintenance, and inhibited mercury consumption. | 2011-12-01 |
20110291547 | PLASMA DISPLAY PANEL (PDP) - A Plasma Display Panel (PDP) enabling optimization of a process to apply phosphor paste in order to achieve mass production using a jet nozzle method includes dummy areas structured to determine whether application conditions such as an ejecting pressure or the like are stable by measuring a depth of the applied layer after applying phosphor paste at a portion thereof in advance. The PDP includes: a first substrate and a second substrate opposing each other; address electrodes arranged on the first substrate; display electrodes arranged on the second substrate along a direction perpendicular to the address electrodes; barrier ribs arranged in a space between the first substrate and the second substrate to define a plurality of discharge cells, and phosphor layers arranged in each of the discharge cells. | 2011-12-01 |
20110291548 | LAMP COVER FOR LIGHT EMITTING DEVICE - A lamp cover containing phosphor for providing white light emission is disclosed. The lamp cover is comprised of a light-partial-reflective cap structure providing the outer surface of the lamp cover, wherein the light-partial-reflective cap structure is composed of a plurality of light transparent layers and a plurality of vacuum layers that are alternatively stacked from outside to inside, a supporting transparent cap structure providing the inner surface of the lamp cover, and a phosphor mixed structure mechanically supported by the outer surface of the supporting transparent cap structure, wherein the outer surface of the phosphor mixed structure is adjacent to the most inner vacuum layer of the light-partial-reflective cap structure. Once the lamp cover is combined with a phosphor exciting light source, the light-partial-reflective cap structure partially prevents phosphor exciting light from escaping from the lamp cover by using Fresnel reflection. | 2011-12-01 |
20110291549 | Pixel arrangement of an organic light emitting display device - A pixel arrangement of an organic light emitting display device includes first sub-pixels and second sub-pixels alternately arranged in a first direction to define a plurality of first columns along the first direction, and third sub-pixels arranged along the first direction to define a plurality of second columns along the first direction among the first columns, two second columns of the third sub-pixels being arranged among three first columns of the alternating first and second sub-pixels. | 2011-12-01 |
20110291550 | Pixel arrangement of an organic light emitting display device - A pixel arrangement of an organic light emitting display device with a plurality of repeatedly arranged sub-pixel groups, each of the sub-pixel groups includes two first sub-pixels in i-th and (i+2)-th columns (i is a natural number), two second sub-pixels in the i-th and (i+2)-th columns, the second sub-pixels being arranged in different rows with respect to the first sub-pixels, and two third sub-pixels in (i+1)-th and (i+3)-th columns, each third sub-pixel being arranged to overlap at least two adjacent rows of the first and second sub-pixels. | 2011-12-01 |
20110291551 | ORGANIC EL ELEMENT AND ORGANIC EL DEVICE - According to one embodiment, an organic EL element has a first electrode on a first substrate, a first carrier transport layer on the first electrode, an emitting layer on the first carrier transport layer, a second carrier transport layer on the emitting layer, a second electrode on the second carrier transport layer, a first heat absorbing layer on the second electrode, the first heat absorbing layer being separated from a center of the second electrode, and a second substrate on the first heat absorbing layer. | 2011-12-01 |
20110291552 | ORGANIC LIGHT-EMITTING DISPLAY APPARATUS - An organic light-emitting display apparatus for selectively realizing circular polarization according to external light conditions, including a substrate; an organic light-emitting device on the substrate; a sealing member on the organic light-emitting device; a phase retardation layer on a surface of the substrate, the organic light-emitting device, or the sealing member; and a linear polarization layer on another surface of the substrate, the organic light-emitting device, or the sealing member, wherein the linear polarization layer is located to be closer to a source of external light than the phase retardation layer, and wherein the linear polarization layer comprises a photochromic material. | 2011-12-01 |
20110291553 | Organic light emitting diode display - An organic light emitting diode (OLED) display including a panel assembly, the panel assembly including an organic light emitting diode; a bezel, the bezel receiving the panel assembly; and a buffer member, the buffer member being attached to a side of the panel assembly and being between the panel assembly and the bezel, wherein the buffer member includes a first area and a second area, the first area having an elasticity greater than an elasticity of the second area. | 2011-12-01 |
20110291554 | SCANNING BEAM DISPLAYS BASED ON LIGHT-EMITTING SCREENS HAVING PHOSPHORS - This specification describes phosphor compositions used in fluorescent layers for scanning beam displays. In general, one aspect of the subject matter described in this specification can be embodied in a display device having a fluorescent layer that absorbs an excitation light at a single wavelength and emits visible light. The fluorescent layer includes a plurality of parallel fluorescent stripes. At least three adjacent fluorescent stripes are made of three different fluorescent materials, which include a first fluorescent material that absorbs the excitation light and emits light of a first color, a second fluorescent material that absorbs the excitation light and emits light of a second color, and a third fluorescent material that absorbs the excitation light and emits light of a third color. | 2011-12-01 |
20110291555 | DISCHARGE LAMP WITH SELF-SUPPORTING ELECTRODE STRUCTURES - A discharge lamp comprises an electrode assembly structured to induce tension in certain of the component electrodes and compression in others of the component electrodes. The balancing tensile and compressive forces cause the electrode assembly to be a unitary, self-supporting structure, which can be inserted into a prefabricated envelope and in which the forces are induced independently of interaction with the envelope. The electrodes in tension may be relatively thin wires and the electrodes in compression may be relatively thicker rods. The electrode assembly may include concentric arrangements of electrodes, with a plurality of rod counter-electrodes spaced circumferentially around a thin wire electrode, or a plurality of thin wire electrodes spaced circumferentially around a central rod counter-electrode. In other embodiments, a counter-electrode may have a flat, polished surface facing one or more electrodes overlying the surface. Dummy electrodes may equalize bending loads on the counter-electrode. | 2011-12-01 |
20110291556 | GAS DISCHARGE LAMP - A gas discharge lamp includes a lamp tube, two electrodes and an electron emitter. The lamp tube has a hermetic discharge chamber filled with a rare gas and two sealing neck portions. Each of the sealing neck portions has a metallic foil disposed therein. Each of the two electrodes includes an emitting part and a connecting part. The connecting part is connected to a metallic wire via the metallic foil. The metallic wire extends out of the sealing neck portion to form a circuit contact. The electron emitter is made of a conductive material and electrically connected to one of the electrodes. A portion of the electron emitter disposed in the hermetic discharge chamber, and a diameter of an end of the electron emitter in the hermetic discharge chamber is less than an outer diameter of the connecting part. | 2011-12-01 |
20110291557 | HIGH PRESSURE DISCHARGE LAMP - A high pressure discharge lamp may include a ceramic discharge vessel and a longitudinal axis, wherein at least one electrode is led out of the discharge vessel by means of a metal-containing feed-through, wherein the feed-through is connected to one end of the discharge vessel by way of a ceramic-containing adjustment part, wherein the adjustment part is tubular and consists of individual layers with different compositions, at least two materials A and B forming a plurality of layers of the adjustment part, these materials being chosen such that their coefficient of thermal expansion is between that of the feed-through and that of the end of the discharge vessel or at most is just outside, the layer thickness of each layer being so low that no shearing forces can occur, and the layer thickness of each layer of the same material being different. | 2011-12-01 |
20110291558 | Ceramic Discharge Vessel Having an Opaque Zone and Method of Making Same - An opaque zone in the polycrystalline (PCA) discharge vessel of a high intensity discharge lamp may be made by creating residual pores in predetermined regions of the final-sintered discharge vessel. The control over the placement of the opaque zone is achieved by forming a carbonaceous residue in a specific region of the discharge vessel prior to final sintering. During sintering, the carbonaceous material causes residual porosity in the sintered PCA. The higher emissivity of the opaque PCA provides localized cooling in order to provide more control over the condensate behavior in the discharge vessel. | 2011-12-01 |
20110291559 | TERAHERTZ SHEET BEAM KLYSTRON - A terahertz sheet beam klystron (TSBK) includes an electron gun configured to generate a sheet electron beam and a drift tube through which the sheet beam is propagated. The drift tube is provided with multiple resonant cavities and includes a drift tube circuit including an input RF circuit through which an input RF signal is introduced and an output RF circuit through which an output RF signal is extracted, a collector, and a vacuum envelope. The output RF circuit is configured such that Q | 2011-12-01 |
20110291560 | ILLUMINATING DEVICE - An illuminating device includes a tubular light guide, a plurality of light-emitting devices, and a base. The tubular light guide has a light input edge and an inner space. The light-emitting devices are distributed at the light input edge to provide lights into the tubular light guide. The base supports the light-emitting devices and the tubular light guide. The base also has an electronic circuit to provide power to the light-emitting devices. The base has at least one air circulation hole for connecting an outer space with the inner space. | 2011-12-01 |
20110291561 | LED LAMP - An LED lamp includes a circuit board with a plurality of LEDs switch and a lamp base made of heat dispersing material. The lamp base includes a fastening pedestal. The fastening pedestal includes an accommodating member, a shell, and a plurality of heat diffusion walls. The accommodating member defines a cavity configured for receiving the circuit board. The shell encloses the accommodating member. The plurality of heat diffusion walls connect the accommodating member to the shell. Each of two adjacent heat diffusion walls define an outlet. | 2011-12-01 |
20110291562 | LIGHTING DEVICE, DISPLAY DEVICE AND TELEVISION RECEIVER - A lighting device of the present invention includes a number of discharge tubes | 2011-12-01 |
20110291563 | SAFETY PROTECTION SOLUTION FOR COMPACT FLUORESCENT LAMPS - A compact fluorescent lamp which includes a compact fluorescent light source and a ballast operatively connected to and controlling operation of the light source. An outer light transmissive envelope surrounds the light source and an elastic protective shield surrounds the ballast. | 2011-12-01 |
20110291564 | LIGHT COLOR AND INTENSITY ADJUSTABLE LED - An integrated photonic device includes a number of LEDs and a feedback mechanism that measures individual LED light outputs using a photo sensor via a light transmitter disposed in the vicinity of individual LEDs. A controller or driver adjusts a current driven to each LED using the detected values according to various logic based on the device application. | 2011-12-01 |
20110291565 | Backup Battery Systems for Traffic Cabinets - Backup battery systems for traffic cabinets that control traffic lights are provided herein. Backup battery systems include a controller operably coupled to 1 or more backup battery panels having rechargeable battery cells. Preferred systems can fit and operate entirely within the traffic cabinet. | 2011-12-01 |
20110291566 | Multi-Wavelength Pumping to Sustain Hot Plasma - A method of sustaining a plasma, by focusing a first wavelength of electromagnetic radiation into a gas within a volume, where the first wavelength is substantially absorbed by a first species of the gas and delivers energy into a first region of a plasma having a first size and a first temperature. A second wavelength of electromagnetic radiation is focused into the first region of the plasma, where the second wavelength is different than the first wavelength and is substantially absorbed by a second species of the gas and delivers energy into a second region of the plasma region within the first region of the plasma having a second size that is smaller than the first size and a second temperature that is greater than the first temperature. | 2011-12-01 |
20110291567 | DISCHARGE LAMP FOR GDS WITH AN AXIAL MAGNETIC FIELD - A glow discharge spectrometer discharge lamp includes: a lamp body having a vacuum enclosure connected to pump elements and to injector elements for injecting an inert gas into the enclosure; a hollow cylindrical first electrode of longitudinal axis X-X′; a second electrode for receiving a sample for analysis and for holding the sample facing one end of the cylindrical electrode; electric field generator including an applicator for applying to the terminals of the electrodes an electric field that is continuous, pulsed, radiofrequency, or hybrid, and suitable for generating a glow discharge plasma in the presence of the gas; coupler elements for coupling the discharge lamp to a spectrometer suitable for measuring at least one component of the plasma; and magnetic field generator elements for generating a magnetic field having field lines oriented along the axis X-X′, the magnetic field being uniform in orientation and in intensity over an area of the sample that is not less than the inside area of the hollow cylindrical electrode as projected along the direction X-X′. | 2011-12-01 |
20110291568 | PLASMA PROCESSING APPARATUS AND PROCESSING GAS SUPPLY STRUCTURE THEREOF - There is provided a plasma processing apparatus for generating inductively coupled plasma in a processing chamber and performing a process on a substrate accommodated in the processing chamber. The plasma processing apparatus includes an upper cover installed to cover a top opening of the processing chamber and having a dielectric window; a high frequency coil installed above the dielectric window at an outer side of the processing chamber; a gas supply mechanism supported by the upper cover and installed under the dielectric window. Here, the gas supply mechanism includes a layered body including plates having through holes. Further, the gas supply mechanism is configured to supply a processing gas into the processing chamber in a horizontal direction via groove-shaped gas channels installed between the plates or between the plate and the dielectric window, and end portions of the groove-shaped gas channels are opened to edges of the through holes. | 2011-12-01 |
20110291569 | LIGHTING APPARATUS USING LIGHT-EMITTING DIODE - The present disclosure provides a lighting apparatus using a light-emitting diode (LED), which includes: LEDs; a power transfer substrate with the LEDs thereon; a radiating member radiating heat generated in the LEDs; a driver electrically connected to the power transfer substrate and integrally coupled to the power transfer substrate and the radiating member; and a heat insulation layer reducing the amount of heat transferred from the radiating member to the driver. In addition, the present disclosure provides a lighting apparatus using an LED, which further includes a cradle fixed to a given object and detachably fixing a lighting body in which a power transfer substrate with LEDs thereon, a radiating member and a driver have been integrally coupled. | 2011-12-01 |
20110291570 | Energy-Efficient Luminaire with Automatic Multilevel Illumination - One embodiment of an energy-efficient light fixture with automatic multilevel illumination comprising a housing that contains multiple ballasts and multiple lamps at least one of which is controlled by an occupancy sensor. At least one of the lamps remains on constantly to provide security in structures which would benefit from the safety that constant illumination provides. The other lamps will remain off until occupancy is detected from a sensor located within the luminaire housing and connected to one of the ballasts located therein. | 2011-12-01 |
20110291571 | INTELLIGENT ENERGY-SAVING LAMP - An intelligent energy-saving lamp includes a power source circuit, a main control circuit, a lighting circuit, and an infrared sensor circuit. The outgoing line of the power source circuit is connected to the incoming line of the main control circuit. The outgoing line of the main control circuit is connected to the incoming line of the lighting circuit. The infrared sensor circuit regulates the lighting circuit via the main control circuit. More specifically, the infrared sensor circuit senses the presence or absence of a person in the lighting area and instructs the main control circuit to regulate the lighting circuit accordingly, thereby saving energy. When people leave the lighting area, the lighting circuit enters the energy-saving mode and is prevented from working at maximum power. When people return, however, normal lighting resumes. Power consumption of the lamp in the energy-saving mode is only 20% of that for normal lighting. | 2011-12-01 |
20110291572 | Display Drivers - An active matrix display comprises a display area of the matrix comprising drive circuitry including a control circuit comprising chiplets outside the display area. The output of the control circuit is distributed among the plurality of chiplets. This arrangement is advantageous in that the chiplets allow for a much smaller fan-in and fan-out structure, thus allowing a much larger percentage of the substrate to be devoted to display area. | 2011-12-01 |
20110291573 | RESONANT POWER SUPPLY FOR LIGHT-EMITTING DEVICES - A resonant power supply for light-emitting devices comprises an inverter including two DC input terminals and two AC output terminals, a resonant circuit connected in series to at least one of the two AC output terminals, and an LED circuit connected in series to the resonant circuit. The inverter is configured to convert a direct current from the two DC input terminals into an alternating current through the two AC output terminals, and the LED circuit emits lights as the alternating current is applied. | 2011-12-01 |
20110291574 | MULTI-CHANNEL CONSTANT CURRENT SOURCE AND ILLUMINATION SOURCE - A multi-channel circuit having respective channels powered through transformers having primary windings connected in series allows substantially equal constant currents to be provided through all channels by cross-regulation while only a single channel need be monitored and controlled. The variation in current between channels is generally small and largely insensitive to imbalances between voltages on loads due, for example, to different numbers of LEDs in series connected strings in illumination devices and can be further reduced by inverse coupling between inductors in respective channels. Efficiency is improved through reduction in the number of stages of the constant current source since the respective channels provided both DC-to-DC conversion and constant current regulation. | 2011-12-01 |
20110291575 | LED DRIVING CIRCUIT AND CONTROL CIRCUIT - A control circuit adapted to control a power converting circuit for stabilizing an output of the power converting circuit is provided. The control circuit includes a capacitor, a charging unit, a discharging unit, a feedback control unit, and a duty-cycle adjusting unit. The charging unit has a first current source coupled to the capacitor for charging the capacitor. The discharging unit is coupled to the capacitor for discharging the capacitor. The feedback control unit controls the charging unit to charge the capacitor according to a feedback signal which represents the output of the power converting circuit. The duty-cycle adjusting unit generates a control signal and adjusts a duty cycle of the control signal according to a voltage of the capacitor. | 2011-12-01 |
20110291576 | Driving system with inductor pre-charging for LED systems with PWM dimming control or other loads - A method includes receiving a control signal associated with a load, where the control signal is to cause a load change from a perspective of a switching-mode power supply. The method also includes causing the power supply to adjust a current through an inductor of the power supply in response to the control signal. The method further includes delaying delivery of the control signal in order to delay a time of the load change, where the current through the inductor increases during the delay. The control signal could include a request to turn on one or more LEDs. The load could include a current regulator. The method could further include providing the request to the current regulator after the delay, such as after the current through the inductor reaches a specified level. Voltage spikes and audible noise in a capacitor coupled to an output of the power supply can be minimized. | 2011-12-01 |
20110291577 | Dimmer Conduction Angle Detection Circuit and System Incorporating the Same - A dimmer conduction angle detection circuit, and systems and methods incorporating the same, is disclosed. The circuit receives a gate drive signal from a PFC circuit and provides a dimmer reference level signal representative of a dimmer circuit's dimmer setting in response. The circuit includes a comparator with first and second inputs that provides a pulse-width modulated output in response to comparing signals received at the inputs. The pulse-width modulated output has a pulse width representative of the dimmer circuit's dimmer setting. The circuit also includes an input network, coupled to the comparator, to receive the gate drive signal and to provide an output, in response, to the comparator's first input. The circuit also includes a threshold supply circuit to provide a threshold voltage to the comparator's second input, and a filter, coupled to the comparator, to convert the comparator's pulse-width modulated output to the dimmer reference level signal. | 2011-12-01 |
20110291578 | TEMPERATURE COMPENSATED DRIVER FOR PULSED DIODE LIGHT SOURCE - A pulsed diode light source driver includes a variable output power supply, an output capacitor, a switchable linear current driver, a temperature sensor, a conditioning circuit, and a voltage monitor. The temperature sensor monitors the temperature of the capacitor while the voltage monitor circuit monitors the output voltage level. The conditioning circuit and the voltage monitor cooperatively control the output voltage of the variable output power supply, so that temperature-related changes in the characteristics of the capacitor are compensated for, and a constant current is maintained through the diode load over a desired range of temperature. The driver is suitable for laser diodes and light emitting diodes. | 2011-12-01 |
20110291579 | DISCHARGE LAMP STARTING CIRCUIT AND DISCHARGE LAMP LIGHTING DEVICE - The present invention is capable of continuously applying an optimum starting waveform to a discharge lamp using a simple-enough circuit configuration. A starting circuit is connected to output terminals of an inverter, and the starting circuit outputs to a discharge lamp an output voltage Vout capable of starting the discharge lamp that is a load, upon receiving an AC power with a high frequency from the inverter at the start of the discharge lamp. Further, the starting circuit is connected to output terminals of the inverter, and comprises two windings connected to the output terminals of the inverter and serially connected to the discharge lamp; a first capacitor connected between an output terminal of the first winding and an input terminal of the second winding; and a second capacitor connected between an input terminal of the first winding and an output terminal of the second winding. | 2011-12-01 |
20110291580 | ILLUMINATING MODULE CAPABLE OF COMPENSATING CURRENT - An illuminating module is capable of compensating current. The illuminating module can tune the light with a light modulating circuit. The illuminating module includes an illuminating unit and a compensating circuit. The illuminating unit includes a power source, a load impedance, and a level unit. The level unit has a level potential which changes with the light modulating circuit. The compensating circuit includes a first resistor, a first switch, and a judging unit. The first resistor is coupled to the power source. The first switch is coupled to the first resistor and the illuminating unit. The judging unit is coupled to the level unit and the first switch. When the level potential is less than a predetermined potential, the judging unit makes the first switch to be at the conducting state to parallel connect the first resistor and the load impedance. | 2011-12-01 |
20110291581 | Rejecting noise transients while turning off a fluorescent lamp using a starter unit - A local minimum of a current monitoring signal is identified by a starter unit that turns off a fluorescent lamp without using a wall switch. Closing a main switch in the starter unit stops an illuminating current from flowing through a gas in the lamp. The local minimum of the current monitoring signal is reached when an increasing valid sample is identified following four valid samples. A sample is valid if it does not differ from the preceding valid sample by more than a threshold difference based on known properties of the signal. By skipping invalid samples, the local minimum is accurately determined to have been reached despite transient noise spikes in the signal that would trip any voltage threshold used to locate the local minimum. When the main switch is opened at a predetermined time after the local minimum, the illuminating current does not again flow through the gas. | 2011-12-01 |
20110291582 | LIGHT EMITTING DIODE LIGHTING DEVICE DRIVEN BY A UNIFORM ALTERNATING CURRENT - The invention is disclosed a lighting device using an alternating current to drive light emitting diodes (LEDs). The lighting device uses at least two parallel-connected LED modules. In front of each LED module has connected to a current balancing unit in series that has same capacitance or inductance. The LED module comprises a first polarity LED bar and a second polarity LED bar connected in parallel. The LED module receives an alternating current voltage from the current balancing unit, which alternatively drive the first polarity LED bar and the second polarity LED bar. The light device uses different impedances of the current balancing unit and the LED to provide smooth and uniform current to the LED module and achieves a stable luminance. | 2011-12-01 |
20110291583 | DIMMER CIRCUIT APPLICABLE FOR LED DEVICE AND CONTROL METHOD THEREOF - A dimmer circuit applicable for LED device and control method thereof is disclosed in the embodiments of the present invention. The dimmer circuit is applicable for controlling at least a LED device. The dimmer circuit includes a rectifier, a bleeder, a phase angle detect circuit, a constant current circuit and a programmable micro controller. The phase angle detect circuit couples to the programmable micro controller. The constant current circuit couples to the LED device The programmable micro controller generates a PWM signal according to the output signal of the phase angle detect circuit to adjust current of the constant current circuit. | 2011-12-01 |
20110291584 | Pulse Modulation Devices and Methods - An embodiment method of generating an output pulse stream comprises first pulse modulating a first multi-bit input term to generate a first one-bit pulse stream, using a bitwise logic AND to combine the first one-bit pulse stream and a second multi-bit term, thereby generating a multi-bit AND output, and second pulse modulating the multi-bit AND output to generate a one-bit output pulse stream representing a product of the first and second multi-bit input terms. | 2011-12-01 |
20110291585 | STEPPED DIMMING DEVICE FOR LED LAMP - The present invention relates to a novel dimming device for a LED lamp capable of effecting a stepped dimming of the LED lamp by detecting a momentary variation in on/off states of the power switch, enabling the LED lamp to vary to work in a plurality of working states in a cyclic manner according to a predetermined program. The dimming device the present invention overcomes the technical problems of using a regular power switch to effect dimming and allows the use of the regular power switch to effect the stepped dimming of LED lamp. The present invention may also use an external DC signal source to effect the stepped dimming of LED lamp. According to the present invention, a user may adjust the brightness of the LED lamp when needed, which not only facilitates the daily life of the user but also effectively save the energy. | 2011-12-01 |
20110291586 | POWER SOURCE CONTROL DEVICE OF ILLUMINATOR AND LIGHTING SYSTEM - A power source control device for controlling an illuminance of an illuminator by outputting a current for driving the illuminator and by controlling the current, including: a receiver for receiving a wireless signal having a predetermined frequency; a storage section for storing a setting table holding a first code indicating a predetermined device identification code; a control signal generating circuit for comparing a second code included in the wireless signal with the first code to output a control signal when the second code agrees with the first code; and a current outputting circuit for generating and outputting a current according to the control signal generating circuit, wherein the power source control device controls the illuminance of the illuminator according to the wireless signal from a desired wireless signal transmitting device in response to a change of the first coded held in the setting table. | 2011-12-01 |
20110291587 | Multi-Function Duty Cycle Modifier - A system and method modify phase delays of a periodic, phase modulated mains voltage to generate at least two independent items of information during each cycle of the periodic input signal. The independent items of information can be generated by, for example, independently modifying leading edge and trailing edge phase delays of each half cycle phase modulated mains voltage. Modifying phase delays for the leading and trailing edges of each half cycle of the phase modulated mains voltage can generate up to four independent items of data. The items of data can be converted into independent control signals to, for example, control drive currents to respective output devices such as light sources to provide multiple items of information per cycle. | 2011-12-01 |
20110291588 | LIGHT FIXTURE WITH AN ARRAY OF SELF-CONTAINED TILES - The present invention describes light fixtures comprising an array of self-contained LED tiles for illuminating light from a surface area of a respective light fixture. Each of the array of LED tiles is a self-contained lamp that contains its respective own AC or DC input power supply and LED driver, its respective heat dissipation element, and its respective light collation element. The array of tiles makes the total illumination from the array to be sufficiently bright, even though any given LED tile might only have a modest amount of light output. Embodiments of the LED tiles for use with various lamp fixtures include, but not limited to, a hexagon-shaped LED tile, a square-shaped LED tile, an equilateral triangle-shaped LED tile, and a rectangle-shaped LED tile with an aspect ratio, for example, of 3:1. The different types of LED tiles are suitable for use to cover various types of surfaces of lamp fixtures. | 2011-12-01 |
20110291589 | MULTI-INPUT DIFFERENTIAL AMPLIFIER AND LIGHT EMITTING ELEMENT DRIVING DEVICE - A multi-input differential amplifying device of the present invention includes: a differential amplifier having an inverting input terminal and a non-inverting input terminal; and an input portion configured to apply a first input voltage to a first input terminal that is one of the inverting input terminal and the non-inverting input terminal and apply a second input voltage to a second input terminal that is the other input terminal, the first input voltage corresponding to first input signals that are a plurality of input signals for the first input terminal, the second input voltage corresponding to a second input signal that is one input signal for the second input terminal. The input portion is configured to correct an offset voltage between the first input voltage and the second input voltage. | 2011-12-01 |
20110291590 | SWITCHING MODE POWER SUPPLIES AND CONTROL METHODS USED THEREIN TO PROVIDE POWER FACTOR CORRECTION AND CONSTANT OUTPUT CURRENT - Switching mode power supplies (SMPS) and control methods used thereof are disclosed. An exemplifying SMPS is coupled to control an inductive device. The SMPS comprises a voltage divider and a peak controller. The voltage divider comprises a resistor and a controllable resistor connected in series through a connection node. The resistance of the controllable resistor is variable, controlled by a control signal. The voltage divider generates a limiting signal at the connection node based on a line voltage at a line voltage power node. The peak controller controls a peak current flowing through the inductive device according to the limiting signal. | 2011-12-01 |
20110291591 | DRIVING CIRCUIT AND CONTROL CIRCUIT - A driving circuit, comprising a power supply, a transistor unit and a feedback control circuit, is disclosed. The power supply is adaptor to provide an electric power to drive a load. The transistor unit comprises at least one load coupling end to couple to the load for adjusting an amount of current flowing through the load. The feedback control circuit controls an amount of the electric power provided by the power supply according to a voltage level of the least one load coupling end. Wherein, the feedback control circuit comprises an error amplifying circuit and a feedback control switch. The error amplifying circuit generates an error amplified signal according to the voltage level of the least one load coupling end, and the feedback control switch is coupled to an output of the error amplifying circuit and is switched between a turn-on state and a turn-off state based on a dimming signal. | 2011-12-01 |
20110291592 | Dimmer Conduction Angle Detection Circuit and System Incorporating the Same - A conduction angle detection circuit, and systems and methods incorporating the same, is disclosed. The circuit includes a comparator having a first input and a second input, and configured to provide a pulse-width modulated output in response to comparison of signals at the first input with signals at the second input. The output has a pulse width representative of a dimmer setting of a dimmer circuit. The circuit also includes a limiting circuit coupled to the comparator and configured to receive a rectified voltage and to provide a voltage-limited output in response to the rectified voltage to the first input of the comparator. The circuit also includes a threshold supply circuit configured to provide a threshold voltage to the second input of the comparator, and a filter coupled to the comparator. The filter is configured to convert the pulse-width modulated output of the comparator to the dimmer reference level signal. | 2011-12-01 |
20110291593 | Fast Reignition of a High Intensity Discharge Lamp - Embodiments of the present invention provide for the rapid reignition of a high intensity discharge lamp. In one embodiment of the invention, an apparatus for a fast reigntion of a high intensity discharge lamp is disclosed. The apparatus is comprised of a ballast operatively coupled to the lamp that is configured to receive power from a power supply. The apparatus is also comprised of a timer circuit that enters a timing phase and produces a quantum of timing information when the lamp ceases receiving power from the power supply. This timer circuit does not require external power during the timing phase. The apparatus is additionally comprised of a control circuit that receives the timing information and permits the ballast to reignite the lamp based on the information. | 2011-12-01 |
20110291594 | LAMP DEVICE AND LIGHTING FIXTURE - In a lamp device | 2011-12-01 |
20110291595 | METHOD OF CONTROLLING VIBRATION MOTOR - Provided is a method of controlling a vibration motor, in which there are provided: a unit that generates a drive signal for generating elliptic motion; a unit that switches the drive signal with a voltage from a power supply, and changes a pulse width of the drive signal; a unit that detects a current flowing in an electromechanical energy conversion element through the switching unit; a unit that detects a position and a velocity of an object to be driven; and a control unit that controls the respective units, and sets the velocity of the object to be driven. The control unit controls a frequency and the pulse width of the drive signal so as to exercise a maximum output characteristic with respect to a target velocity within a range in which the current detected by the current detection unit does not exceed a given limit value. | 2011-12-01 |
20110291596 | Method and Apparatus for Controlling Motor Torque - The subject matter disclosed herein describes a system for controlling torque in a soft starter. In particular, torque ripple is reduced when transitioning between two different operating modes of a soft starter. A soft starter may include a first operating mode, designed for improved performance during low-speed operation of a motor, and a second operating mode, designed for improved performance during high-speed operation of the motor. However, transitioning between two different operating modes may result in significant transient currents in the motor, which, in turn, produce torque in the motor. The system described herein reduces this transient torque production in the motor. | 2011-12-01 |
20110291597 | Method for Aligning and Starting a BLDC Three Phase Motor - System and method for aligning and initiating rotation of a rotor in a motor. The motor may include the rotor and a plurality of pairs of electromagnets. The energy needed for alignment of the rotor of the motor may be used to generate the first movement in forced commutation. The energy needed for alignment may be combined with the initial energy to start the motor. The logic may be configured to align the rotor of the motor by energizing the three coils of the motor. Pulse width modulation may be applied to the first coil to control current on the coils; when a maximum PWM duty cycle is reached, the coil not required to rotate the correct direction may be released, thereby initiating motion in a rotor of the three phase motor. A rotation period may be determined. One or more pairs of electromagnets of the plurality of pairs of electromagnets may be excited at a first excitation level. The excitation level may be increased, over a second period of time, to a second excitation level. The second excitation level may be a higher excitation level than the first excitation level. The rotation period may be decreased over the first and second periods of time. | 2011-12-01 |
20110291598 | MOTOR BUS VOLTAGE COMMUTATION METHOD - A drive system for a motor has a switching network for supplying three phases of power to a motor, and a control for the switching network. The control is programmed to provide a commutation with a positive offset, ahead of a current position, when driving in opposition to a load, and to use one of a zero or negative offset when the control drives the motor complementary to the load force. A method and system are also disclosed and claimed. | 2011-12-01 |
20110291599 | HIGH-SPEED SELF-CASCADED ELECTRIC MACHINE - An electric machine is disclosed comprising a first energy source, a second energy source, and a stator which comprises a first set of windings and a second set of windings. The electric machine has a rotor and a controller, the controller configured to control the first energy source to supply a first current to the first set of windings and control the second energy source to supply a second current to the second set of windings. The controller also detects an angular position of the rotor, detects the first current, detects the second current, and determines an optimum phase shift angle of the first current based on the angular position of the rotor, the first current, and the second current. The controller controls the first energy source based on the optimum phase shift angle to modify the first current supplied to the first set of windings. | 2011-12-01 |
20110291600 | ELECTROMECHANICAL DEVICE - An electromechanical device includes: a magnet coil; a PWM driving circuit; and a control unit, wherein the control unit performs a first control of setting an excitation interval which is an interval in which a PWM drive signal is supplied to the magnet coil and a second control of changing a duty ratio of the PWM drive signal, and wherein the control unit performs an advance angle control of putting the phase of the center of the excitation interval earlier than the phase in which a counter-electromotive force generated in the magnet coil has the maximum value in the first control, and increases the duty ratio of the PWM drive signal in the second control so that a gain is greater than 100% when the gain is 100% at the time of generating the PWM drive signal so as to have a sinusoidal shape. | 2011-12-01 |
20110291601 | CONTROL APPARATUS FOR ELECTRIC ROTATING MACHINE - A controller outputting a voltage instruction for drive control to a electric rotating machine includes a drive voltage instruction calculation section calculating drive voltage instructions for driving the electric rotating machine, a position estimation voltage generator generating position estimation voltage instructions for position estimation about the electric rotating machine, a noise reduction voltage generator generating noise reduction voltage instructions for reducing noise occurring from the electric rotating machine along with input of the position estimation voltage instructions to the electric rotating machine, and adders outputting, to a voltage application means, a voltage instruction obtained by adding the position estimation voltage instructions and the noise reduction voltage instructions to the drive voltage instructions. | 2011-12-01 |
20110291602 | Electromagnetic Pulse Engine - An electromagnetic pulse engine is disclosed. The engine includes a housing, a drum concentrically mounted within the housing and adapted to rotate therein, a plurality of permanent magnets mounted about an internal cylindrical wall of the drum, and a plurality of electromagnets mounted radially about an annular bearing. Successive permanent magnets of the plurality of permanent magnets have an opposing polarity facing inward, where at least one electromagnet of the plurality of electromagnets is adapted to be selectively energized and de-energized to attract a first permanent magnet and to repel a second permanent magnet to rotate the drum about the plurality of permanent magnets. In addition, the engine includes an axial shaft that is secured to the drum for rotating therewith, where the annular bearing supporting the plurality of electromagnets is secured against rotation relative to the axial shaft. | 2011-12-01 |
20110291603 | DRIVE CONTROL CIRCUIT AND FOCUS CONTROL CIRCUIT - An equalizer generates a control signal for adjusting, based on a difference between a target value for the state of an object and an actual measured value thereof, the state of the object to match the target value. A PWM modulation unit generates a PWM signal corresponding to the control signal generated by the equalizer. An H-bridge drive unit generates a drive current for driving a drive element that changes the state of the object in accordance with the PWM signal generated by the PWM modulation unit. A slew-rate control unit changes the current driving capability of the H-bridge drive unit in accordance with the control signal. | 2011-12-01 |
20110291604 | STEPPER MOTOR CONTROLLER AND METHOD FOR CONTROLLING SAME - A stepper motor controller includes control circuitry with control outputs and individual driver pulse width modulation circuitry. The individual driver pulse width modulation circuitry has individual driver pulse width modulation outputs and modulation control inputs coupled to the respective control outputs. The controller has a group of individual drivers, where each one has an individual driver input coupled to a respective one of the individual driver pulse width modulation outputs, and an individual driver output coupled to an individual driver terminal of the controller. The stepper motor controller has common driver pulse width modulation circuitry having a common driver pulse width modulation output. There is also a common driver having a common driver input coupled to the common driver pulse width modulation output and a common driver output coupled to a common driver terminal of the controller. When there is one or more stepper motor field coils connected between respective driver terminals and the common driver terminal, individual pulse width modulated driver currents are supplied to the stepper motor field coils from the individual driver terminals and a common pulse width modulated driver current is supplied to the stepper motor field coils from the common driver terminal. | 2011-12-01 |
20110291605 | SINGLE-PHASE AC SYNCHRONIZED MOTOR - There is provided a single-phase AC synchronized motor that does not need smooth of rectifier waves but stably performs shift from a starting operation to a synchronized operation. In the motor, based on detected signals of a position sensor, rectified current is reciprocally flowed to each direction of a single-phase coil which starts the motor. The motor includes a start-up operation circuit with a sensor starting period that increases a rotational speed until reaching to a first predetermined rotational speed; and a control device that controls operation of the motor as that shift to synchronized operation is performed when a rotational speed of a permanent magnetic rotor is reached to a second predetermined rotational speed nearby a synchronized rotational speed but not exceeding the synchronized rotational speed, and when the rise and fall of detected signals of the position sensor and the zero-cross point of AC current are approximately correspondent to each other. | 2011-12-01 |
20110291606 | Contactless power charging system and energy storage system including the same - A contactless power charging system and an energy storage system including the same, the contactless power charging system including a contactless transformer configured to transmit power stored in a battery to a load, wherein the contactless transformer includes a primary core unit, the primary core unit including a first base portion, a projecting portion projecting from the first base portion, and a primary coil wound around the projecting portion; and a secondary core unit, the secondary core unit including a second base portion, a concave portion in the second base portion to receive the projecting portion, and a secondary coil on an inner surface of the concave portion, the secondary coil being configured to couple to the primary coil. | 2011-12-01 |
20110291607 | Case or Other Portable Container With at Least One Electric Power Supply and Storage Unit Which can be Recharged Using Solar Energy or Other Energy Sources, Useful for Providing Electric Power During Open-Air Activities or for Other Uses - Case or other portable container with an electric power supply and storage unit which can be recharged using solar energy or other energy sources, useful for providing electric power during open-air activities or for other uses, of the type which comprises a case or other preferably rigid or semi-rigid container ( | 2011-12-01 |
20110291608 | SOLAR POWER-GENERATING EQUIPMENT - Disclosed herein is solar power-generating equipment, including: a solar cell; a secondary battery; an electric power outputting portion; a display portion configured to display thereon information about an electric-generating capacity of the solar cell, and information about a state of charge of the secondary battery; and a control portion configured to cause the display portion to display thereon the information about the electric-generating capacity of the solar cell only for a predetermined time length, and cause the display portion to display thereon the information about the state of charge of the secondary battery only for a predetermined time length. | 2011-12-01 |
20110291609 | COMPUTER SYSTEM AND CONTROL METHOD THEREOF - A computer system to charge a rechargeable battery of an external device regardless of power on/off of the computer system when the external device having the rechargeable battery is connected, and a control method thereof. The computer system includes a connector having a terminal to which an external device is connected, a power supply to supply power to the connector, and a recognition signal generator to generate a predetermined recognition signal to initiate charging a rechargeable battery of the external device with power supplied from the power supply through the connector when the external device having the rechargeable battery is connected to the connector through the terminal. Thus, it is possible to charge the battery of the external device even when the computer system is powered off. | 2011-12-01 |
20110291610 | Diagnostic device system - A diagnostic device system has a weight-reduced rechargeable battery. When a portable radiographic apparatus and a portable X-ray source are carried to and used for imaging at a private home or a care home, the portable radiographic apparatus and the portable X-ray source are loaded on an automobile. When the charge amount of rechargeable batteries for operation housed in the portable radiographic apparatus or the portable X-ray source loaded on the automobile is low, or when there are plural destinations and the charge amount of the rechargeable batteries becomes low, a rechargeable battery for charging mounted on the automobile is used to charge the rechargeable batteries for operation while traveling. Because the rechargeable batteries for operation are charged while traveling, a large number of rechargeable batteries for operation does not need to be charged in advance, whereby the weight of the rechargeable batteries for operation can be reduced. | 2011-12-01 |
20110291611 | INTELLIGENT BATTERY POWERED CHARGING SYSTEM - A charger for providing power to an electronic device from an AC source, incorporating a battery to provide back-up power when no AC source is available. The charger uses a first voltage converter with a smoothing characteristic such that there are periods during each AC cycle, during which the first DC voltage falls substantially from its maximum value, and a second voltage converter, outputting power at a second DC voltage to the electronic device. A battery comprising at least one cell is connected at the output of the first converter such that current can be received by the battery from the first converter and supplied by the battery to the second converter. A controller is used, configured to charge the battery from the first converter, or to supply current from the battery to the second converter for output to the device, during different parts of the AC cycle. | 2011-12-01 |
20110291612 | CHARGING CONNECTOR AND CHARGING CABLE UNIT - A vehicle and a power source are connected to each other at the time of charging by a charging cable including a signal line for transmitting a pilot signal for communication of information and a power line for transmitting electric power. The pilot signal has voltage changeable between a high level and a low level having a lower potential than the high level. The charging connector is provided with a power terminal to be supplied with the electric power from the power line, a signal terminal receiving the pilot signal transmitted from the signal line, and a light emitting diode having one end coupled to a signal of the signal line and the other end coupled to a node of a higher potential than the low level, with the forward direction thereof from the other end to the one end. | 2011-12-01 |
20110291613 | TEMPERATURE SENSOR INTERFACE FOR WIRELESS AND WIRED CHARGING - Exemplary embodiments are directed to an electronic device for enabling a temperature of a battery unit to be sensed with a wired power charger or a wireless power. A device may include a wireless power receiver and a wired charging module operably coupled to the wireless power receiver. The device may also include an interface configured to couple to a battery unit and for selectively enabling one of the wireless power receiver and the wired charging module to determine a temperature of the battery unit. | 2011-12-01 |
20110291614 | WIRELESS CHARGER FOR USE IN AUTOMOBILE - A wireless charge is provided for use in an automobile and includes a main body having a transmitter circuit and a power member. The main body has a surface to which a clip section is mounted so that coupling with an electronic device can be realized through the clip section. The power member is electrically connectable with a cigarette lighter of the automobile and the main body, whereby the power member transmits the electrical power supplied from the cigarette lighter to the transmitter circuit to allow the transmitter circuit to convert the electrical power into an AC signal, which is transmitted in a wireless manner to a receiver circuit of the electronic device to electrically charge a rechargeable battery of the receiver circuit. As such, a user may perform electrical charging of the electronic device during the travel of the automobile. | 2011-12-01 |
20110291615 | WIRELESS CHARGING SYSTEM FOR VEHICLES - A system of energy storage and charging usable in vehicles and other applications that eliminate the battery capacity and automotive range issues is described. In our invention, vehicles are equipped with charging mechanisms to charge and recharge onboard batteries using wireless electricity and power transmission using magnetic resonant coupling between tuned electromagnetic circuits. The batteries may be charged using wireless charging systems installed along the roads while the vehicle is in use on the road. Charging system may optionally utilize infrared laser beam radiation to transmit power for charging the batteries on board a vehicle while it is in use as well. The onboard vehicle batteries may also be charged when the vehicle is not being driven either by plugging in the vehicle into wall electricity using wired power connection or may be wirelessly charged using the magnetic resonant coupling. By locating the charging circuits on roads, a continuous operation of electric-only mode of hybrid vehicles or pure electric-only vehicles can be accomplished and fully eliminate the need for gasoline usage. | 2011-12-01 |
20110291616 | UNIVERSAL CHARGING DEVICE - A universal charging device, the device comprising: a charging pack including at least one of an AC terminal for inputting an AC power, an AC/DC converter for rectifying the AC power to a DC power, a DC terminal for outputting a DC power of a first power value, and a charging pack switch for turning on/off an output of the DC power. | 2011-12-01 |
20110291617 | ELECTRICAL COMPONENT INCLUDING A BATTERY CHARGER ASSEMBLY - An electrical assembly selectively receives power from an external power supply. The electrical assembly includes a base that at least partially defines a tool port and a battery port and an electrical tool selectively coupled to the tool port. A rechargeable battery pack is selectively coupled to the battery port and a circuit is supported by the base and is operable to direct power to the tool port and the battery port such that the external power provides power to the electrical tool to operate the electrical tool and to recharge the rechargeable battery pack. | 2011-12-01 |
20110291618 | BATTERY MANAGEMENT SYSTEM - A battery management system can include a battery having a plurality of cells, a plurality of devices coupled to the battery, and a control unit coupled to a first device of the devices. The devices can assess the statuses of the cells. The control unit can communicate with a destination device of the devices via a default path and can communicate with the destination device via a backup path if an undesirable condition occurs in the default path. | 2011-12-01 |
20110291619 | BATTERY POWER SOURCE DEVICE, AND BATTERY POWER SOURCE SYSTEM - A battery power source device includes a battery block configured by parallel-connecting a plurality of series-circuits each constituted of a secondary battery, and a cut-off element which is operable to be in a cut-off state where a charging and discharging path of the secondary battery is cut off; a current limit value setting section which sets a current limit value representing an upper allowable limit of an entire current value as a current value of a current flowing through the battery block; and an available battery number detecting section which detects the number of cut-off elements which are not in the cut-off state, out of the plurality of cut-off elements included in the battery block, as the available battery number. In this arrangement, the current limit value setting section sets the current limit value so that the current limit value is decreased, as the available battery number detected by the available battery number detecting section is reduced. | 2011-12-01 |
20110291620 | MULTI-PURPOSE BATTERY CHARGING CIRCUIT - The present invention relates to a multi-purpose battery charging circuit configuration able to be selectively in a simple charge mode when intended for low-end solutions (option | 2011-12-01 |
20110291621 | Smart Battery Charging System For Electrical Generator - An electrical generator has an engine that provides a mechanical output that is converted to electrical current by an alternator. The engine is started by a battery-powered motor starter. The battery is charged during running of the electrical generator by a portion of the electrical current output by the alternator. The battery is charged according to a charging profile based on the temperature of the battery at start up of the electrical generator. | 2011-12-01 |
20110291622 | BATTERY SYSTEM AND AUTOMOBILE - Disclosed is a battery system wherein safety of a lithium secondary battery can be enhanced by efficiently deactivating (inactivating) lithium metal deposited on a negative electrode of the lithium secondary battery. Also disclosed is an automobile. Specifically disclosed is a battery system comprising a lithium ion secondary battery and a temperature control unit for controlling the temperature of the lithium ion secondary battery. The temperature control unit performs such a control that the temperature T of the lithium ion secondary battery is maintained within the following range: 55° C.2011-12-01 | |
20110291623 | METHOD AND MEANS TO IMPLEMENT A CURRENT FOLLOWER OPERATION OF A BUCK MODE, SWITCHING POWER SUPPLY - A buck mode power supply monitors the pulse load current for use as a scaled reference for comparison to a measured output current from each stage of the supply. A correction signal is generated for each stage by comparing the reference to the measured output currents. This result is compared to a second reference created from the system clock. A resulting second correction signal is used to alter the threshold reference voltage in a manner that provides proportional pulse width control to the supply output. | 2011-12-01 |
20110291624 | SWITCH DRIVING CIRCUIT AND SWITCH DRIVING METHOD - The present invention relates to a switch driving circuit and a driving method thereof that are capable of preventing hard switching. | 2011-12-01 |
20110291625 | Low Power Regulator - A voltage regulator may derive current from a bias circuitry having a constant-transconductance. The bias circuitry may generate the bias current using three NMOS devices. The temperature coefficient of the bias current may be within a specified, desired range. The bias current may be mirrored to low-power regulator circuitry to bias a diode-connected transistor in the low-power regulator circuitry to operate in the strong inversion region. A ratioed current based on the output load current may be injected into a bipolar junction transistor (BJT) device to cause the gate-source voltage (V | 2011-12-01 |
20110291626 | SWITCHING POWER SOURCE DEVICE - A switching power source device disclosed in this specification includes a switching power source portion of nonlinear control method to generate an output voltage from an input voltage by performing an ON/OFF control of a switch element according to a comparison result between a feedback voltage and a reference voltage, wherein a ripple component is injected to either one of the feedback voltage and the reference voltage, and an offset control portion to adjust either one of the feedback voltage and the reference voltage for cancelling a DC offset of the output voltage caused by the ripple component. | 2011-12-01 |
20110291627 | Voltage regulator - The invention relates to a voltage regulator having a differentiating circuit and an amplifier, the differentiating circuit being designed to detect a voltage at the voltage regulator connection and to provide it as a differentiated signal at its differentiating output, and the amplifier being designed to inject a compensation signal dependent on the differentiated signal into an input connection of an output circuit of the voltage regulator. | 2011-12-01 |
20110291628 | SWITCHING REGULATOR CIRCUIT AND METHOD FOR PROVIDING A REGULATED VOLTAGE - A switching regulator circuit and a method for providing a regulated output voltage for a load is provided that includes a comparator, whose comparator output signal is routed to a first oscillator control input, whereby a first comparator input voltage is present at a first input of the comparator and a second comparator input voltage is present at a second comparator input of the comparator, an oscillator with the first oscillator control input, at which the comparator output signal of the comparator is present, and whereby an oscillator output signal can be provided at an output of the oscillator, and by means of the signal the switching processes at a switching element can be controlled, by which a coil current can be influenced by a coil connected to the switching element, and a first compensator for influencing the second comparator input voltage as a function of the input voltage, whereby this first compensator is connected to the second comparator input of the comparator. | 2011-12-01 |
20110291629 | SWITCHING REGULATOR AND METHOD FOR ELIMINATING BEAT OSCILLATION - The present invention discloses a switching regulator eliminating beat oscillation, comprising: a first transistor, a second transistor, and an inductor connected to a common node, wherein the first and second transistors operate to convert an input voltage to an output voltage; a comparator comparing a voltage signal with a saw tooth wave to generate a control signal controlling at least one of the first and second transistors; a feedback loop obtaining a feedback signal from the output voltage and generating the voltage signal according to the feedback signal; and an inductorless filter circuit located in the feedback loop for filtering a predetermined frequency band. | 2011-12-01 |
20110291630 | MICROPROCESSOR PERFORMANCE AND POWER OPTIMIZATION THROUGH SELF CALIBRATED INDUCTIVE VOLTAGE DROOP MONITORING AND CORRECTION - Disclosed is a digital voltage regulator system and method for mitigating voltage droop in an integrated circuit. If an unacceptable voltage droop is detected, the digital voltage regulator may take action to allow the power supply voltage to recover. A digital voltage regulator in accordance with embodiments discussed herein detects voltage droop by comparing a power supply voltage measurement with a threshold voltage. The threshold voltage may be calibrated based on power supply voltage measurements taken while the integrated circuit is operating. | 2011-12-01 |
20110291631 | POWER SUPPLY CIRCUIT - This invention offers a power supply circuit that is capable of improving a power factor as well as reducing a ripple current of an input/output of the power supply circuit due to switching of a switching device. The power supply circuit is provided with a first power supply circuit including first and second switching devices, a second power supply circuit including third and fourth switching devices and a switching control circuit. The switching control circuit controls the switching devices so that the first switching device and the third switching device are turned on and off at timings different from each other when an alternating current voltage from an alternating current power supply is positive, and the second switching device and the fourth switching device are turned on and off at timings different from each other when the alternating current voltage is negative. | 2011-12-01 |
20110291632 | Power Converters Including Zero-Current Detectors And Methods Of Power Conversion - A power converter includes a zero-current detector having an adjustable offset voltage. The power converter includes a power converting unit and a switch driving circuit. The power converting unit generates a DC output voltage based on a pull-up driving signal, a pull-down driving signal and a DC input voltage. The switch driving circuit generates a first detection voltage signal based on the DC output voltage. The switch driving circuit includes a zero-current detector configured to adjust an offset voltage based on the first detection voltage signal and generate a zero-current detecting signal based on the offset voltage. The offset voltage and the zero-current detecting signal are associated with a current in the power converting unit. The switch driving circuit also includes a pulse-frequency modulating circuit configured to perform a pulse-frequency modulation (PFM) to generate the pull-up driving signal and the pull-down driving signal based on the zero-current detecting signal | 2011-12-01 |
20110291633 | Current Source Arrangement, Circuit Arrangement with the Current Source Arrangement and Method for Operating Such an Arrangement - In one embodiment, the current source arrangement comprises a current source (B), that has two output terminals ( | 2011-12-01 |
20110291634 | OVERCURRENT PROTECTION CIRCUIT AND OVERCURRENT PROTECTION METHOD - An overcurrent protection circuit includes: a determiner configured to determine whether or not the switch current exceeds a predetermined threshold, that is, the switch current is an overcurrent state when the switching element is turned ON; an OFF period setting counter configured to increase or decrease a counter output depending on a determination result of the determiner; and a drive signal generator configured to generate a drive signal of the switching element such that a length of an ON timing interval of the switching element corresponds to the counter output of the OFF period setting counter. | 2011-12-01 |
20110291635 | ELECTRONIC CIRCUIT - An electronic circuit including a first electronic sub-circuit having an operating voltage that is higher than a supply voltage provided by a voltage source, and a second electronic sub-circuit that is coupled to the voltage source and to a first voltage input of the first electronic sub-circuit. The second electronic sub-circuit includes a short-time voltage boosting circuit that is adapted to provide a voltage at the first voltage input for a period long enough to enable a start-up of the first electronic sub-circuit when the short-time voltage boosting circuit is triggered and a controllable voltage boosting circuit that is adapted to provide a boosted voltage at the first voltage input. The controllable voltage boosting circuit is coupled to a control output of the first electronic sub-circuit to receive a control signal, and the period the short-time voltage boosting circuit provides a voltage at the first voltage point is long enough to start the control of the controllable voltage boosting circuit by the first electronic sub-circuit. | 2011-12-01 |
20110291636 | VOLTAGE REGULATOR - Provided is a voltage regulator capable of stable operation under a light load so as to cover a wide range of load capacitances. The voltage regulator includes a circuit for charging a phase compensation capacitor for the voltage regulator, and a zero due to a resistor ( | 2011-12-01 |
20110291637 | INCREASING THE EFFICIENCY OF A DC-DC CONVERTER - A DC-DC converter receives input power from a power source and generates a regulated DC voltage as an output. The DC-DC converter contains multiple blocks, each of which is powered by a power supply received on a supply terminal. The DC-DC converter also contains a voltage regulator to generate a lower voltage from the power source. The lower voltage generated by the regulator is provided as the power supply on the supply terminal when the regulated DC voltage is less than a reference value, and the regulated DC voltage itself is provided as the power supply on the supply terminal otherwise. The regulator is switched off when the blocks are powered by the regulated DC voltage, thereby leading to increased efficiency of the DC-DC converter. | 2011-12-01 |
20110291638 | Clock Integrated Circuit - The clock circuit of an integrated circuit operates with tolerance of variation in power. A compensation circuit is powered by a supply voltage. The compensation circuit generates a compensated voltage reference, which is compensated for variation in the supply voltage. The compensated voltage reference is compared by comparison circuitry against an output of timing circuitry, to determine timing of the clock signal. | 2011-12-01 |
20110291639 | SEMICONDUCTOR INTEGRATED CIRCUIT - A semiconductor integrated circuit includes an internal reference voltage generation unit configured to generate an internal reference voltage; a high voltage generation unit configured to pump an external driving voltage based on the internal reference voltage applied from the internal reference voltage generation unit, and generate a high voltage having a specified level; and a reference voltage transfer unit configured to generate a test reference voltage from a reference voltage in a package test mode to correspond to a change in a driving operation of the external driving voltage applied from outside, and monitor and force the internal reference voltage. | 2011-12-01 |
20110291640 | REMAINING SHEET QUANTITY DETECTION DEVICE AND IMAGE FORMING APPARATUS - The remaining sheet quantity detection device of the present invention is provided with a storage unit for storing first information which associates a distance between a distance measuring sensor and a tray with a level value in a distance range less than a peak distance, and second information which associates the distance with the level value in a distance range exceeding the peak distance. Additionally provided is a distance acquisition unit for acquiring a distance that is associated with the level value obtained by the distance measuring sensor in the first information when a detection unit detects that the distance is less than the peak distance, and acquiring a distance that is associated with the level value obtained by the distance measuring sensor in the second information when the detection unit detects that the distance exceeds the peak distance. | 2011-12-01 |