05th week of 2009 patent applcation highlights part 19 |
Patent application number | Title | Published |
20090026913 | Dynamic color or white light phosphor converted LED illumination system - A color tunable light emitting device includes multiple light emitting components such as light emitting diodes (LEDs) or laser diodes (LDs) with substantially the same emission characteristics, and multiple phosphors materials with different excitation and emission wavelengths, each excited by one of the light emitting components. The light emitting components are powered by an electrical circuit which allows separate control of the optical power output of the different light emitting components. The light from the light emitting components is arranged to impinge and excite a corresponding phosphor material such that the phosphors are excited and emit light at their characteristic wavelengths. By separately adjusting the power to each LED/LD, the amount of light emitted by each phosphor, and hence, through color mixing, the color of the light emitted, is varied. | 2009-01-29 |
20090026914 | ELECTRON-EMITTING DEVICE, ELECTRON SOURCE, IMAGE DISPLAY APPARATUS, AND INFORMATION DISPLAY REPRODUCING APPARATUS - To provide an electron-emitting device having an electron-emitting film containing a metal and a carbon, wherein a density of the electron-emitting film other than the metal is determined to be not less than 1.2 g/cm | 2009-01-29 |
20090026915 | Phosphor, Phosphor Sheet, and Manufacturing Method Therefore, and Light Emission Device Using the Phosphor - To provide a phosphor having a broad emission spectrum in a range of blue color (in a peak wavelength range from 400 nm to 500 nm), having a broad flat excitation band in a near ultraviolet/ultraviolet range, and having excellent emission efficiency and emission intensity/luminance. The phosphor is given as a general composition formula expressed by MmAaBbOoNn:Z, (where element M is the element having bivalent valency, element A is the element having tervalent valency, element B is the element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is more than one kind of element acting as an activator), satisfying 5.0<(a+b)/m<9.0, 0≦a/m≦2.0, 0≦o≦n, n=2/3m+a+4/3b−2/3o, and has an emission spectrum with a maximum peak in the wavelength range from 400 nm to 500 nm under an excitation of the light in a wavelength range from 250 nm to 430 nm. | 2009-01-29 |
20090026916 | WHITE LIGHT-EMITTING LAMP, BACKLIGHT USING SAME, DISPLAY AND ILLUMINATING DEVICE - A white light-emitting lamp ( | 2009-01-29 |
20090026917 | LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, AND VAPOR DEPOSITION APPARATUS - To provide a light-emitting element and a light-emitting device which can be designed and manufactured with redundancy. A light-emitting element of the invention includes a pair of electrode, and a layer containing a light-emissive substance between the pair of electrodes. The layer containing a light-emissive substance includes a layer containing a composite material, and the layer containing a composite material includes an organic compound and an inorganic compound. The concentration ratio of the organic compound to the inorganic compound changes periodically. The layer containing a composite maternal can be changed in electrical characteristics without changing the composition ratio of the organic compound to the inorganic compound in the layer or changing the kind of compounds used for the layer. | 2009-01-29 |
20090026918 | NOVEL PHOSPHOR AND FABRICATION OF THE SAME - The present invention provides a light emitting diode-converted phosphor compound having the following formula: | 2009-01-29 |
20090026919 | PHENANTHRENE DERIVATIVE - The present invention relates to the improvement of organic electroluminescent devices, in particular blue-emitting devices, by using compounds of the formula (1) as host materials in the emitting layer. | 2009-01-29 |
20090026920 | Phosphor, light-emitting device using same, image display and illuminating device - The present invention relates to a phosphor represented by the following general formula (I), comprising: a composite oxide containing a divalent and trivalent metal elements as a host crystal; and at least Ce as an activator element in said host crystal, wherein the phosphor has a maximum emission peak in a wavelength range of from 485 nm to 555 nm in the emission spectrum at room temperature: | 2009-01-29 |
20090026921 | ORGANIC ELECTROLUMINESCENT COLOR LIGHT-EMITTING DEVICE - An organic electroluminescent color light-emitting apparatus including, on a supporting substrate ( | 2009-01-29 |
20090026922 | Light emitting element, light emitting device, and electronic device - One aspect of the present invention is a light emitting element having a layer including an aromatic hydrocarbon and a metal oxide between a pair of electrodes. The kind of aromatic hydrocarbon is not particularly limited; however, an aromatic hydrocarbon having hole mobility of 1×10 | 2009-01-29 |
20090026923 | Organic metal complex and its use in organic electroluminescent device - Disclosed are an organic electroluminescent device (organic EL device) that is improved in luminous efficiency and fully assured of driving stability and has a simple structure and an organic metal complex suitable therefor. The organic metal complex is represented by the following general formula (I) | 2009-01-29 |
20090026924 | METHODS OF MAKING LOW-REFRACTIVE INDEX AND/OR LOW-K ORGANOSILICATE COATINGS - A method for forming a substantially transparent nanoporous organosilicate film on a substantially transparent substrate, for use in optical lighting devices such as organic light emitting diodes (OLEDs). The method includes first preparing a composition comprising a silicon containing pre-polymer, a porogen, and a catalyst. The composition is coated onto a substrate which is substantially transparent to visible light, forming a film thereon. The film is then gelled by crosslinking and cured by heating, such that the resulting cured film is substantially transparent to visible light. It is preferred that both the substrate and the nanoporous film are at least 98% transparent to visible light. Optical devices which include the resulting structures of this invention exhibit improved light extraction and illuminance where the nanoporous organosilicate film has a low refractive index in the range of 1.05 to 1.4, serving as an impedance matching layer in such devices. | 2009-01-29 |
20090026925 | Electronic Device and Electronic Equipment Provided with the Electronic Device - An electronic device having an intermediate layer which can transfer smoothly carriers between two layers adjacent to the intermediate layer and having improved properties, and electronic equipment having high reliability are provided. An electronic device includes a pair of electrodes and laminated layers provided between the electrodes. The laminated layers include a hole transport layer (first organic semiconductor layer), a light emitting layer (second organic semiconductor layer), and an intermediate layer provided between the first and second organic semiconductor layers so as to make contact with both of the hole transport layer and the light emitting layer. The intermediate layer is constituted of a compound represented by a general formula A | 2009-01-29 |
20090026926 | TRANSPARENT CONDUCTIVE FILM AND DISPERSION-TYPE ELECTROLUMINESCENCE DEVICE USING SAID FILM - To provide a low-resistance transparent conductive film with high light transmittance, which is a transparent conductive film including a transparent polymer film having on one surface thereof a transparent thin film layer with conductivity and a blocking layer containing at least one material selected from the group consisting of a thermoplastic resin, a thermosetting resin and a UV-curable resin on the thin film, which is characterized in: that a surface resistivity of the transparent thin film layer with conductivity is 0.1Ω/□ or more and not more than 100Ω/□; and that a refractive index of the material constituting the blocking layer is 1.6 or more and less than 1.9, and a dispersion-type EL device with high luminance and long life using the same. | 2009-01-29 |
20090026927 | DISPLAY DEVICE AND MANUFACTURING METHOD THEREFOR - A display device, includes: an insulating substrate; a common electrode which is formed on the insulating substrate; a common voltage applying layer which is formed between the insulating substrate and the common electrode, and comprises an upper surface which faces the common electrode and a side surface of the opposite sides of the upper surface; and an organic insulating layer which is formed between the insulating substrate and the common electrode, and is formed with a contact hole which exposes at least a part of the side surface of the common voltage applying layer, the common electrode electrically connected to a side surface contact portion of the common voltage applying layer which is exposed through the contact hole. | 2009-01-29 |
20090026928 | PHENYLPHENOXAZINE OR PHENYLPHENOTHIAZINE- BASED COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME - Provided are a phenylphenoxazine- or phenylphenothiazine-based compound and an organic electroluminescent device using the same. The phenylphenoxazine- or phenylphenothiazine-based compound is easily prepared, easily dissolved, and has excellent hole injection properties and excellent thermal stability. Accordingly, the compound is suitable for an organic layer of the organic electroluminescent device, specifically, a hole injection layer or a hole transport layer. In addition, the compound is suitable for an organic pigment or an electronic material, such as a nonlinear optical material. | 2009-01-29 |
20090026929 | White organic light emitting device - A white organic light emitting device (OLED) includes an anode and a cathode spaced apart from each other; a blue light emitting layer, a green light emitting layer, and a red light emitting layer sequentially formed between the anode and the cathode; a first buffer layer formed between the blue light emitting layer and the green light emitting layer, and having a HOMO (highest occupied molecular orbital)-LOMO (lowest occupied molecular orbital) energy gap higher than or equal to that of the adjacent light emitting layers; and a second buffer layer formed between the green light emitting layer and the red light emitting layer, and having a LOMO energy level higher than that of the red light emitting layer. | 2009-01-29 |
20090026930 | Aromatic compound, organic light-emitting diode including organic layer including the aromatic compound, and method of manufacturing the organic light-emitting diode - An aromatic compound represented by Formula 1 below and an organic light-emitting diode including the same: | 2009-01-29 |
20090026931 | SMALL MOLECULE ORGANIC LIGHT EMITTING DIODE FORMED USING SOLVENT SOLUBLE MATERIALS - The present invention provides a fluorescent organic light-emitting diode (OLED). The fluorescent organic light-emitting diode includes a substrate ( | 2009-01-29 |
20090026932 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF MANUFACTURING THE SAME - An organic light emitting display and a method of manufacturing the same. The light emitting display includes a substrate having a pixel region and a non-pixel region; an organic light emitting diode (OLED) in the pixel region and including a first electrode, an organic thin layer, and a second electrode; a driving circuit unit in the non-pixel region and for driving the OLED; a shielding layer in the non-pixel region and on the driving circuit unit, the shielding layer being electrically coupled to a ground power source; and an insulating layer interposed between the driving circuit unit and the shielding layer. The shielding layer effectively protects the driving circuit unit in the non-pixel region form electrostatic discharge (ESD). Also, the light emitting display may include a guard ring at an edge portion of the non-pixel region and electrically coupled to the shielding layer to further protect the driving circuit from ESD. | 2009-01-29 |
20090026933 | Organic Electroluminescent Device - An organic electroluminescent device comprising: a transparent substrate; a first electrode; a second reflective electrode and an organic light-emitting region for emitting light of a wavelength 1 from a recombination zone within the light-emissive region, and a microcavity formed between the substrate and the second electrode, the distance between the transparent substrate and the second electrode being [(¼ni)l+(½nj)al]±40 nm, where a is zero or a positive integer, ni is an average refractive index of the material disposed between the recombination zone and the second electrode and nj is an average refractive index of the material disposed between the recombination zone and the substrate. | 2009-01-29 |
20090026934 | ADHESIVE ENCAPSULATING COMPOSITION FILM AND ORGANIC ELECTROLUMINESCENCE DEVICE - An adhesive encapsulating composition and an encapsulating film, which are useful as an encapsulant for an organic electroluminescence device or other electronic devices is provided. The adhesive encapsulating composition includes a hydrogenated cyclic olefin-based polymer and a polyisobutylene resin having a weight average molecular weight of 500,000 or more. Some embodiments of the adhesive encapsulating•composition include a hydrogenated cyclic olefin-based polymer, a polyisobutylene resin having a weight average molecular weight of 500,000 or more, a photocurable resin, and a photopolymerization initiator. | 2009-01-29 |
20090026935 | ORGANIC ELECTROLUMINESCENT DEVICE AND DISPLAY DEVICE - An organic electroluminescent is provided having an anode, a cathode, and at least one organic layer including a light-emitting layer provided between the anode and the cathode, wherein the organic layer includes an amine compound represented by the following formula (1): | 2009-01-29 |
20090026936 | ORGANIC ELECTROLUMINESCENCE ELEMENT - An organic electroluminescence element including an organic layer including a light-emitting layer between a pair of electrodes, wherein the light-emitting layer contains at least two light-emitting materials having different Ea values and at least one host material, a concentration of a light-emitting material having a larger Ea value in the light-emitting layer gradually decreases from a cathode side toward an anode side, and a concentration of a light-emitting material having a smaller Ea value in the light-emitting layer gradually decreases from the anode side toward the cathode side. | 2009-01-29 |
20090026937 | ORGANIC ELECTROLUMINESCENT DEVICE - There is provided an organic electroluminescent device | 2009-01-29 |
20090026938 | ORGANIC ELECTROLUMINESCENCE ELEMENT - An organic electroluminescence element including an organic layer including a light-emitting layer disposed between a pair of electrodes, wherein the light-emitting layer contains at least one hole transporting light-emitting material and at least one electron-transporting host material, and a concentration of the hole transporting light-emitting material in the light-emitting layer decreases from an anode side toward a cathode side. | 2009-01-29 |
20090026939 | ORGANIC ELECTROLUMINESCENCE ELEMENT - The present invention provides an organic electroluminescence element having at least a light-emitting layer disposed between a pair of electrodes, wherein the light-emitting layer includes at least two electron transporting materials and a hole transporting host material, with at least one of the electron transporting materials being an electron transporting light-emitting material, and a total concentration of the at least two electron transporting materials in the light-emitting layer decreases from a cathode side toward an anode side. | 2009-01-29 |
20090026940 | ORGANIC ELECTROLUMINESCENCE ELEMENT - An organic electroluminescence element including an organic layer including at least a light-emitting layer between a pair of electrodes, wherein the light-emitting layer comprises at least two hole transporting materials and an electron transporting host material, with at least one of the hole transporting materials being a hole transporting light-emitting material, and a total concentration of the at least two hole transporting materials in the light-emitting layer decreases from an anode side toward a cathode side. | 2009-01-29 |
20090026941 | Organic electroluminescence display device - The invention provides an organic electroluminescence display device that makes it possible to obtain a highly reliable display. The organic electroluminescence display device has an organic electroluminescence element that includes a first layer ( | 2009-01-29 |
20090026942 | Circuit substrate, electro-optical device and electronic appliances - The invention stably operates active elements, such as transistors, and enables the display device to have a wide screen and to be stably operated for a long period of time. The electro-optical device includes an electro-optical element interposed between a cathode and an anode and disposed on the substrate, active elements addressing the electro-optical device, and insulating layers including an insulating material interposed between at least one of the cathode and anode and substrate and having a dielectric constant smaller than a prescribed value. | 2009-01-29 |
20090026943 | OPTICAL DEVICE AND MANUFACTURING METHOD OF THE OPTICAL DEVICE - An optical device is provided which is capable of emitting light of a predetermined color (mixed color) other than the intrinsic colors of light emitting layers from each pixel, with a simple design, and with a reduced number of drive lines (electrodes) to achieve the predetermined color (mixed color). | 2009-01-29 |
20090026944 | FIELD EMISSION CATHODE STRUCTURE AND METHOD OF MAKING THE SAME - A method for making a field emission cathode structure includes forming a ballast layer over a column metal layer, forming a dielectric layer over the ballast layer, forming a line metal layer over the dielectric layer, forming a trench in the line metal layer and the dielectric layer, the trench extending to the ballast layer, and forming a sidewall spacer and a sidewall blade adjacent a sidewall of the trench, where the sidewall spacer is between the dielectric layer and the sidewall blade, and where the conformal spacer is recessed as compared to the sidewall blade such that a gap is present between the sidewall blade and the line metal layer. | 2009-01-29 |
20090026945 | PREVENTING STRESS TRANSFER IN OLED DISPLAY COMPONENTS - An OLED display, comprising: a substrate; an OLED having two spaced-apart electrodes and organic layers disposed there between, and the OLED disposed over the substrate; an encapsulation container fixed by perimeter seal to the substrate and disposed over the OLED to provide an enclosure; and the substrate or the encapsulation container, or both, including compliant regions that flex, compress, or expand under stress and reduce stress transfer between the substrate and the encapsulation container through the perimeter seal. | 2009-01-29 |
20090026946 | Display Device and Method of Manufacturing the Same - A display device using an organic light emitting element is provided which is structured so as to ensure excellent display performance by avoiding dot defect and improve long-term reliability. The distance between an organic light emitting element and a sealing substrate is controlled using the top of a bank that is placed in a pixel portion and the top of an insulating film that is placed in a driving circuit portion. As a result, a gap is provided between the organic light emitting element and the sealing substrate and a damage to the organic light emitting element can be avoided. Furthermore, the sealing substrate can be as close to an element substrate as possible, thereby keeping the amount of moisture that enters the display device from its sides small. | 2009-01-29 |
20090026947 | Method for Producing a Discharge Tube Arrangement, and One Such Discharge Tube Arrangement - A method for producing a discharge tube arrangement ( | 2009-01-29 |
20090026948 | Plasma Display Device and Method of Manufacturing Green Phosphor Material for Plasma Display Device - A plasma display device having a panel main body in which a pair of transparent substrates is arranged in opposition so as to form a discharge space between the substrates on at least a front side, barrier ribs are arranged on at least one of the substrates to divide the discharge space into a plurality of spaces, a group of electrodes is arranged on the substrates so as to generate discharge in the discharge space divided with the barrier ribs, and phosphor layers that emit by discharge are provided, in which the phosphor layers are equipped with a green phosphor layer including at least Zn | 2009-01-29 |
20090026949 | Plasma Display Device and Method of Manufacturing Green Phosphor Material for Plasma Display Device - A plasma display device having a panel main body in which a pair of transparent substrates is arranged in opposition so as to form a discharge space between the substrates on at least a front side, barrier ribs are arranged on at least one of the substrates to divide the discharge space into a plurality of spaces, a group of electrodes is arranged on the substrates so as to generate discharge in the discharge space divided with the barrier ribs, and phosphor layers that emit by discharge are provided, in which the phosphor layers are equipped with a green phosphor layer including at least Zn | 2009-01-29 |
20090026950 | PLASMA DISPLAY PANEL - By making the thickness of a dielectric layer thinner than the thickness of each of electrodes, an opposed discharging phenomenon is exerted between the electrodes so that it becomes possible to reduce the discharging voltage between the electrodes. A plasma display panel is provided with a pair of substrates which are aligned face to face with each other with a discharge space placed inside thereof, a plurality of electrodes which are formed on the inner face of one of the substrates in a manner so as to be extended in a fixed direction, with a predetermined thickness, so that by generating a surface discharge, a screen display is carried out, and a dielectric layer which covers the electrodes, and in this structure, the dielectric layer is formed with a thickness which is thinner than the thickness of the electrodes. | 2009-01-29 |
20090026951 | FILTER AND PLASMA DISPLAY DEVICE THEREOF - The present invention relates to a plasma display device. The plasma display device is formed on a upper substrate side of a panel and includes a first base layer; a second base layer having refractive index smaller than that of the first base layer; and a sheet for protecting external light including a plurality of pattern units formed to be spaced from each other between the first and second base layers, wherein an interval between two pattern units adjacent each other of the plurality of pattern units being larger than a height of the pattern unit. | 2009-01-29 |
20090026952 | PHOSPHOR PASTE AND PLASMA DISPLAY PANEL USING THE SAME - A phosphor paste and a plasma display panel using the same are provided. The phosphor paste includes a vehicle made of an organic binder and a solvent, a phosphor powder, and a thermal decomposition catalyst. The thermal decomposition catalyst mediates oxidative thermal decomposition of the organic binder. The thermal decomposition catalyst may include Zeolite and a metal oxide nanopowder with a particle size of 10 to 1,000 nm. | 2009-01-29 |
20090026953 | MANUFACTURING METHOD OF PLASMA DISPLAY PANEL AND PLASMA DISPLAY PANEL - A PDP (plasma display panel) is manufactured by a manufacturing method including the steps of: (a) preparing a front structure (first structure) having a plurality of X electrodes (first electrodes) and Y electrodes (first electrodes) formed on one surface of a front substrate (first substrate) and a dielectric layer that covers the X electrodes and the Y electrodes and a rear structure (second structure) having a plurality of address electrodes (second electrodes) and a plurality of barrier ribs formed on one surface of a rear substrate (second substrate); (b) forming a protective layer containing SrCO | 2009-01-29 |
20090026954 | Plasma display panel - A plasma display panel (PDP) includes first and second substrates, a plurality of first and second electrode lines extending along a first direction on the first substrate, the first and second electrode lines having an alternating pattern, a plurality of address electrodes on the second substrate and extending along a second direction, the plurality of address electrodes including bent portions, barrier ribs between the first and second substrates to define a plurality of discharge cells, a plurality of first electrode portions extending from each of the first electrode lines toward discharge cells in two different arrays along the first direction, and a plurality of second electrode portions extending from each of the second electrode lines toward discharge cells in two different arrays along the first direction, the second electrode portions overlapping the bent portions of the address electrodes. | 2009-01-29 |
20090026955 | Discharge Lamp With a Cast Base - A discharge lamp with a cast base has two electrodes for feeding power into the discharge vessel, two current feeds for making contact with the electrodes from the outside and a lamp base with a recess for receiving one end of the discharge vessel. In this context, one end of the discharge vessel is introduced into the recess in the lamp base. Between the lamp base and the discharge vessel there is an intermediate space. The current feeds are located at least partially within the intermediate space. This intermediate space has been cast with a sealing compound so that the sealing compound fills at least part of the interspace and encloses the end of the discharge vessel in such a way that the current feeds of the discharge lamp are sealed off from the outside in so far as being located within the lamp base. | 2009-01-29 |
20090026956 | COILED COIL ELECTRODE DESIGN FOR HIGH PRESSURE SODIUM LAMPS - A high pressure sodium discharge lamp includes an arc tube which encloses a discharge sustaining fill which comprises sodium. Electrodes extend into the fill for generating an arc discharge in the fill during operation of the lamp. At least one of the electrodes includes a coiled coil which supports an emitter material thereon. | 2009-01-29 |
20090026957 | LED LIGHTING MODULE WITH A HEAT-SINKING FAILSAFE DEVICE - The present invention provides an LED lighting module with a heat-sinking failsafe device, including LED light sets, a power supply unit and a radiator fan. The radiator fan is linked to a main circuit via a series circuit or a parallel circuit. An electric circuit is placed between the main circuit and radiator fan. A current controller is assembled between the electric circuit and main circuit. When the radiator fan is operated abnormally, the power supply of main circuit could be reduced or interrupted through said electric circuit and current controller. The LED light set is turned into a weak-current state or switched off, thus efficiently preventing overheating or explosion of the LED light set and improving the safety and quality of the LED lighting module. | 2009-01-29 |
20090026958 | LIGHTING CONTROL FOR VEHICLE LIGHTING DEVICE - A lighting control device for a vehicle lighting device is arranged so that loads applied to switching regulators are about equal when driving multiple semiconductor light sources (e.g., LEDs) as multifunctional lamps through the switching regulators. The LEDs are divided into two groups. The LEDs belonging to the first group are driven to be turned ON through a first switching regulator and the LEDs belonging to the second group are driven to be turned ON through a second switching regulator. Maximum values of power to be supplied to the LEDs are set to be about equal to each other, and loads to be applied to the switching regulators are about equal to each other. | 2009-01-29 |
20090026959 | Non-contact light emitting display for vehicle - A non-contact light emitting display for a vehicle is disclosed as having at least: a light emitting unit, a first induction coil to supply electric power for the light emitting unit; the first induction coil generates electric power by non-contact induction with an inductor of the vehicle for executing one way or two way signal transmission. Thereby, the non-contact light emitting display can save the provision of exposed electric conductors or conducting pins, it can obtain electric power from the vehicle to execute one way or two way signal transmission, or can be used on an aeronautic, a space or a sea vehicle for illumination with the effect of water proofness and dust proofness. | 2009-01-29 |
20090026960 | RELAMPING CIRCUIT FOR BATTERY POWERED BALLAST - A ballast (e.g. a fluorescent light ballast) includes a primary ballast for powering the lamp from a power supply (e.g., utility line power) and an battery powered ballast for powering the lamp from a battery when the primary power supply is not energized by the power supply. When power supply power is restored to the ballast, the ballast shuts down the battery powered ballast and a switch circuit operably connects the lamp to the primary ballast. The ballast toggles the switch circuit such that the primary ballast detects replacement of a lamp and resets any fault detection or protection circuits (e.g., an end of lamp life circuit) that may have been triggered during the transition from battery power to power from the power supply. | 2009-01-29 |
20090026961 | Low power consumption LED emergency light - The present invention is to provide an emergency light comprising a housing, a matrix shaped LED light module, a charging module, and a power cord having one end extending out of the housing for connecting to an AC source and the other end electrically connected to the charging module and the matrix shaped LED light module respectively. Power of the AC source is either fed to the charging module for charging the charging module via the power cord or fed to the matrix shaped LED light module for illuminating a predetermined area with high-intensity light. Due to the low power consumption characteristic of the matrix shaped LED light module, the emergency light has the ability of consuming a minimum amount of energy in illumination and prolonging the time period of illumination while no electrical current is supplied to the emergency light. | 2009-01-29 |
20090026962 | Method and system for economical emergency activation of electrical devices - The invention provides a method for economical emergency activation of an electrical device, the method comprising sensing an effect associated with activity of the electrical device, detecting an electrical power interruption and activating the electrical device during the electrical power interruption, in case decrease in the effect is sensed in time proximity to the power interruption. The invention also provides an activation circuit for economical emergency activation of an electrical device, the activation circuit comprising a detector for sensing an effect associated with activity of the electrical device, a voltage detector for detecting an electrical power interruption and a driver for activating the electrical device during the electrical power interruption, in case decrease in the effect is sensed from before the electrical power interruption until after the beginning of the electrical power interruption. | 2009-01-29 |
20090026963 | SURFACE WAVE EXCITATION PLASMA GENERATOR AND SURFACE WAVE EXCITATION PLASMA PROCESSING APPARATUS - The present invention provides a surface wave excitation plasma generator in which surface wave excitation plasma is efficiently generated. A surface wave excitation plasma generator including an annular waveguide and a dielectric tube is provided. The annular waveguide | 2009-01-29 |
20090026964 | High Frequency Power Supply - For determining a wave running time between a RF source in a plasma power supply device and a load connected to the plasma power supply device, an RF pulse is transmitted forwards from the RF source to the load. The pulses are reflected by the load and transmitted backwards to the power source. A return time measured on arrival of the pulse(s) at the inverter is used to determine a wave running time. | 2009-01-29 |
20090026965 | LOW-PRESSURE MERCURY VAPOR DISCHARGE LAMP WITH AMALGAM - The invention relates to a lamp system comprising a low-pressure mercury vapor discharge lamp having a discharge vessel ( | 2009-01-29 |
20090026966 | LIGHTING SYSTEM WITH LIGHTING UNITS USING OPTICAL COMMUNICATION - A lighting system and a method of operating the lighting system are described. A plurality of lighting units ( | 2009-01-29 |
20090026967 | Optically-triggered multi-stage power system and devices - A multi-stage optically-triggered power system. At least one triggering stage is responsive to at least one optical trigger to directly create photogeneration of carriers in the at least one triggering stage and thus generate at least one output signal. At least one main power device stage coupled to the at least one triggering stage is responsive to the at least one generated output signal to activate the at least one main power device stage. The at least one triggering stage and the at least one main power device stage may be monolithically integrated. | 2009-01-29 |
20090026968 | PLASMA SUPPLY DEVICE - A plasma supply device generates an output power greater than 500 W at an essentially constant basic frequency greater than 3 MHz and powers a plasma process to which is supplied the generated output power, and from which reflected power is returned to the plasma supply device. The plasma supply device includes at least one inverter connected to a DC power supply, which inverter has at least one switching element, and an output network. The output network is arranged on a printed circuit board. The output network can therefore be designed low priced and accurately. | 2009-01-29 |
20090026969 | ORGANIC LIGHT EMITTING DEVICE - An organic light emitting device is disclosed. The organic light emitting device includes a display unit on a substrate, the display unit including a plurality of subpixels, a plurality of monitor pixels positioned outside the display unit, a driver that supplies a data signal to the display unit in each of a plurality of subfields, a power supply unit that supplies a power to the display unit and the monitor pixels, and a sample hold unit connected to power terminals of the monitor pixels. When most significant bit is defined as n-bit, the sample hold unit samples a current supplied to the power terminals of the monitor pixels into a voltage in any one of the subfields corresponding to bit equal to or more than (n−2)-bit among the plurality of subfields, and transmits the sampled voltage to the power supply unit. | 2009-01-29 |
20090026970 | Method of Manufacturing Thin Film Transistor - The object of the present invention is to form a low-concentration impurity region with good accuracy in a top gate type TFT. Phosphorus is added to a semiconductor layer by using a pattern made of a conductive film as a mask to form an N-type impurity region in a self-alignment manner. A positive photoresist is applied to a substrate so as to cover the pattern and then is exposed to light applied to the back of the substrate and then is developed, whereby a photoresist | 2009-01-29 |
20090026971 | Apparatus for Controlling Lamp Driving and Light Unit Having the Same - Provided are an apparatus for controlling a lamp driving, and a light unit. The apparatus comprises a trans-portion, a plurality of lamps, a first cable, and a current attenuator. The trans-portion outputs a first AC power and a second AC power. The plurality of lamps are lighted-on by the first and second AC powers. The first cable and a second cable transfer an output power from the transformer to both ends of the lamps. The current attenuator removes a deviation in currents input to both ends of the lamps. | 2009-01-29 |
20090026972 | Light Emitting Unit and Lighting Apparatus - To provide a light emitting unit and a lighting apparatus capable of handling different voltages. | 2009-01-29 |
20090026973 | LIGHTING APPARATUS - A lighting apparatus according to the present invention includes: a plurality of solid state light emitting devices; a holding unit which holds the plurality of solid state light emitting devices; a casing inside which the holding unit is disposed; a first terminal and a second terminal disposed at a longitudinal end of the casing; a third terminal and a fourth terminal disposed at the other longitudinal end of the casing; a first rectification unit which converts alternating current power, supplied from an external source to the first terminal and the third terminal, into direct current power, and to supply the direct current power to the plurality of solid state light emitting devices; and a second rectification unit which converts alternating current power, supplied from the external source to the second terminal and the fourth terminal, into direct current power, and to supply the direct current power to the plurality of solid state light emitting devices. | 2009-01-29 |
20090026974 | FLUORESCENT TUBE POWER SUPPLY AND BACKLIGHT - A fluorescent tube power supply including an inverter power supply which outputs a DC voltage, and an inverter which converts an output of the inverter power supply to an AC; wherein a power stabilizing unit for stabilizing a power input to the inverter is arranged between the inverter power supply and the inverter; and a feedback control of the inverter power supply is performed based on an output of the power stabilizing unit. The power stabilizing unit detects a current flowing between the inverter power supply and the inverter, and the feedback control of the inverter power supply is performed based on the current. | 2009-01-29 |
20090026975 | SYSTEMS AND METHODS FOR IMPROVED STARTUP AND CONTROL OF ELECTRODELESS PLASMA LAMP USING CURRENT FEEDBACK - In one example embodiment, a drive probe is coupled to the lamp body to provide the primary power for ignition and steady state operation of the lamp. Feedback may be used to adjust frequency in response to changing conditions of the lamp during startup. A phase shifter may be used to adjust the phase of the power between ignition and steady state operation. A sensor may detect a lamp operating condition that automatically triggers a shift in phase after the fill in the bulb is vaporized. In another example embodiment, a method for sequentially optimizing the drive power and phase shift applied to the lamp is disclosed that may reliably regulate the lamp current consumption to desired startup and operational levels despite variations in lamp environmental conditions. | 2009-01-29 |
20090026976 | METHOD FOR DIMMING THE LIGHT EMITTED FROM LED LIGHTS, IN PARTICULAR IN THE PASSENGER CABIN OF AN AIRLINER - In order to dim the brightness of the mixed-color light from an LED light ( | 2009-01-29 |
20090026977 | DRIVE UNIT, SMOOTHING CIRCUIT, DC/DC CONVERTER - A drive unit has a load driving portion driving a load by a PWM drive method; a soft-start function portion for achieving a soft-start function; and a soft-start disabling portion counting a time elapsed after a PWM signal is turned on at start-up of the unit, and disabling the soft-start function when a count value reaches a predetermined value. | 2009-01-29 |
20090026978 | SYSTEM AND METHOD FOR LIGHT SOURCE IDENTIFICATION - A light source is configured to send a beacon signal representative of the unique identifier thereof, on command, constantly or at a predetermined interval. The beacon signal is integrated into the light emitted by the light source, wherein the integration of the beacon signal is performed in a manner that visible flicker of the resultant light is imperceptible. A remote detection unit is configured to receive the light and extract the beacon signal therefrom. In this manner the remote detection device is capable of wirelessly determining the unique identifier of a light source. The collected unique identifier of the light source can subsequently be provided to a controller associated with the light source, thereby providing individual control of the light source by the controller. Through the use of electronic data transfer from the remote detection unit to the controller, the provision of the one or more unique identifiers to the controller can be enabled in an efficient and accurate manner. | 2009-01-29 |
20090026979 | Lighting load management system for lighting systems having multiple power circuits - A lighting control system is provided for a space that is equipped with multiple lamps for illuminating the space and multiple power circuits for supplying power to different groups of the lamps. The control system stores information relating to the past illumination of the lamps in each of the different groups. The system detects conditions or events that indicate that increased illumination of the space by the lamps is needed, and produces a control signal in response to the detection of a condition or event that indicates that increased illumination of the space by the lamps is needed. In response to the control signal, the system supplies power to at least one of the power circuits, which is selected on the basis of the stored information, to turn ON the group of lamps receiving electrical power from that power circuit. | 2009-01-29 |
20090026980 | DIMMING SYSTEM POWERED BY TWO CURRENT SOURCES AND HAVING AN OPERATION INDICATOR MODULE - A dimming system and method of operating the same are provided. The dimming system includes a first terminal configured to operatively connect to a first conductive line, a second terminal configured to operatively connect to a second conductive line, and a third terminal configured to operatively connect to a third conductive line. The first conductive line is configured to connect to a load, the second conductive line is configured to supply an alternating current, and the third conductive line is configured to connect to a current path. The dimming system further includes a controller operatively connected to at least one of the first, second and third terminals for controlling operation of the dimming system. The first and second terminals are configured for electrically connecting to a primary power supply and the first and third terminals are configured for electrically connecting to a secondary power supply. The primary power supply is powered through connection to neutral, and wherein the secondary power supply is powered through connection to an earth ground. | 2009-01-29 |
20090026981 | LIGHT EMITTING ELEMENT DRIVER DEVICE - A driver device for driving light emitting elements comprises a data latch having an input coupled to an input signal, a current control circuit having an input coupled to the data latch, and an output coupled to the input of an output stage, the latter being configured to drive the light emitting elements. The driver device has a power control circuit having an input coupled to the output of the data latch and an output coupled to the input of the current control circuit. The power control circuit is configured to control the current control circuit and the latter is configured to deliver a first current when the data inputted to the power control circuit is in a first state and a second current when at least part of the data inputted to the power control circuit is in a second state. | 2009-01-29 |
20090026982 | Structure for LED lamp and method for forming the improved structure - The present invention generally relates to an improved structure for an LED lamp and a method for forming the improved structure, more particularly to an improved LED lamp structure having a special figure so as to replace a traditional incandescent light bulb. The improved structure for the LED lamp is disclosed and comprises: a flexible PCB, which is shaped to form a three-dimensional structure and has at least one tier of LEDs mounted thereon, the LED being electrically connected to the printed circuits of the flexible PCB; and a rectifier, which is disposed on the end of the three-dimensional member and electrically connected to the three-dimensional member. The method for forming the improved structure of the LED lamp is disclosed and comprises the steps of: (1) providing a flexible PCB, which can be formed a three-dimensional structure and has a least one tier of LEDs thereon; (2) fabricating the flexible PCB to form the three-dimensional structure; and (3) electrically connecting a rectifier to the three-dimensional structure. | 2009-01-29 |
20090026983 | Lighting Device and Display System with a Lighting Device - A lighting device ( | 2009-01-29 |
20090026984 | Electric vehicle, and device and method of controlling slip thereof - A slip control device, a slip control method, and a vehicle provided with such a slip control device are provided, with which the vehicle can travel stably even on a slippery road surface maintaining good road holding. The device is provided with a torque directive control means ( | 2009-01-29 |
20090026985 | Method for Actuating an Electromagnetic Valve - A method for is provided actuating at least one electromagnetic valve containing at least one coil, which can be excited by an excitation current, and an armature, in which the excitation current can be set such that, in response to a signal for actuating the armature from one position into another position, it causes the actuator to move as a result of an excitation current threshold being exceeded, and is kept at a value which is lower by comparison in order to hold the armature in a specific position. The excitation current, which is greater than zero but below the excitation current threshold, is applied at least temporarily to the electromagnetic valve even if no signal for actuating or for holding the armature is present. | 2009-01-29 |
20090026986 | PROTECTION METHOD FOR A REVERSIBLE ELECTRIC MOTOR - A method of protecting a reversible electric motor that includes an armature capable of rotating axially about itself between two angular end positions, the axial rotation of the armature undergoing a deceleration phase as each angular end position approaches, where the method involves determining a characteristic value of the deceleration phase, comparing this characteristic value to a predetermined threshold value, and applying a degraded operating mode when the characteristic value is far from the threshold value. | 2009-01-29 |
20090026987 | Vehicle Drive Device and Method of Controlling Vehicle Drive Device - A vehicle drive device includes an engine ( | 2009-01-29 |
20090026988 | Motor Control Device - A motor control device includes a motor current detector for detecting motor current flowing in a three-phase motor based on current flowing between an inverter driving the motor and a DC power supply, a specified voltage vector generating portion for generating a specified voltage vector indicating a voltage vector to which an applied voltage to the motor should follow based on a magnetic flux linkage of an armature winding of the motor, a specified voltage vector correcting portion for correcting the generated specified voltage vector, and a magnetic flux estimating portion for estimating the magnetic flux linkage based on the motor current and the specified voltage vector after the correction. The motor control device controls the motor via the inverter in accordance with the specified voltage vector after the correction. | 2009-01-29 |
20090026989 | Electromagnetic Suspension Device - In an electromagnetic suspension device comprising one member ( | 2009-01-29 |
20090026990 | METHOD AND DEVICE FOR DRIVING A BRUSHLESS MOTOR WITH VOLTAGE WAVEFORM PREDISPOSED FOR A PROGRESSIVE AND AUTOMATIC SWITCHING FROM A THREE-PHASE SINUSOIDAL DRIVING TO A SQUARE WAVE THREE-PHASE DRIVING - The method and a related device are for driving a brushless motor, according to which by acting solely on the control value, that is by reducing or increasing it, the driving mode eventually passes from a sinusoidal three-phase driving mode to a distorted square-wave three-phase driving mode for increasing or maximizing the voltage that may be supplied to each motor winding or vice versa. An effective drive voltage profile includes, cyclically, during each 60 electrical degree interval, profiles of re-constructed outphased complete drive waveforms including a first one stably in a saturated region, a second one exiting, at the beginning of the interval, a state of incipient saturation, and a third one reaching, at the end of the interval, a state of incipient saturation. In this way, by modifying the numerical control value it is possible to pass from a sinusoidal drive mode to a distorted drive mode of enhanced maximum peak value or vice versa. | 2009-01-29 |
20090026991 | SYNCHRONIZATION OF SEQUENTIAL PHASE SWITCHINGS IN DRIVING STATOR WINDINGS OF A MULTIPHASE SENSORLESS BRUSHLESS MOTOR AT SUB BEMF-DETECTABILITY SPEEDS - The method of synchronizing sequential phase switchings in driving stator windings of a multiphase sensorless brushless motor with a reconstructed information on the current angular position of a permanent magnet rotor, includes sampling on a currently non-conductive stator winding a voltage induced thereon by the resultant magnetic field produced by the drive current forced through currently conductive stator windings that inverts its sign when the rotor transitions across a plurality of significant angular positions, at which orthogonality between the resultant magnetic field and a magnetic axis of the non-excited winding verifies. The sign of the sampled voltage induced on the currently non-excited winding is compared with the sign that is expected upon transiting across the angular position of inversion by the moving rotor for the current phase drive configuration to sequentially switch to the next phase drive configuration upon verifying conformity of the sign of the sampled voltage with the expected sign. | 2009-01-29 |
20090026992 | PRINTER AND DC MOTOR SPEED CONTROL DEVICE - In speed control that is performed within a single operating cycle of a printer, three-level control of ON control, OFF control, and chopper control, is performed in place of the two-level control of ON control and OFF control, to effectively suppress speed variations due to load variations within a single operating cycle, even in small printers provided with DC motors having small output torques. In a printer comprising a DC motor | 2009-01-29 |
20090026993 | LOAD DRIVE CONTROL CIRCUIT - A load drive control circuit includes a drive circuit for driving a load. A control circuit, connected to the drive circuit by diagnostic lines, provides the drive circuit with a control command that specifies an operation state. The drive circuit drives the load in the operation state specified by the control command, generates a diagnostic output including diagnostic notification signals each having an H level or an L level, and provides the diagnostic notification signals of the diagnostic output to the control circuit. A signal output unit outputs first and second diagnostic outputs respectively in response to the first and second control command from the control circuit. A diagnostic line failure determination unit checks whether the first and second diagnostic outputs are both normal to determine whether the diagnostic lines includes a failure or not. | 2009-01-29 |
20090026994 | ELECTRIC POWER STEERING CONTROL - A method for improving a failure mode diagnostic of an electric power steering system by overcoming a motor electric lock condition due to position sensor signal corruption or other motor faults. If certain conditions are met, the method determines that the motor is in an electric lock condition, and then reduces a torque current command to the motor so that it is able to be rotated by a vehicle hand-wheel. Once the motor is able to be rotated, then the method determines whether certain conditions have been met to determine whether the position sensor is malfunctioning. | 2009-01-29 |
20090026995 | Reliable Monitoring of the Speed in Coordinate Measuring Appliances - In a method for reliably monitoring the speed of a moveable coordinate measuring device, a first value of the speed is calculated from measured values of the coordinate measurement system. The measured values contain information on positions of the coordinate measuring device. The measured values are further used to determine the coordinates of a measurement object. A second value of the speed is ascertained from measurement signals of at least one additional movement sensor. The measurement signals can also be used for controlling a drive device of the coordinate measuring device. A fault signal can be generated if the first value and/or the second value deviate from one another, from a predetermined value and/or a limit value according to a predefined criterion. | 2009-01-29 |
20090026996 | PULSE MOTOR CONTROL DEVICE, CONTROL METHOD, CONTROL PROGRAM, AND IMAGING APPARATUS - A pulse motor control device includes a drive pulse generator configured to generate a drive pulse in accordance with a set cycle, a pulse motor driver configured to generate an excitation current of a pattern corresponding to the number of division per one step of a pulse motor based on the drive pulse supplied from the drive pulse generator, the number of division being set in the pulse motor driver, the pulse motor driver supplying the excitation current to the pulse motor to thereby drive the pulse motor based on micro-step driving, and a controller configured to set the cycle in the drive pulse generator every time the drive pulse is supplied from the drive pulse generator. | 2009-01-29 |
20090026997 | CONTROL APPARATUS FOR RELUCTANCE TYPE SYNCHRONOUS MOTOR - A control apparatus for a motor (in | 2009-01-29 |
20090026998 | ON-VEHICLE ACTUATOR SYSTEM - A motor is controlled to always consume power supplied from a power supply system or not to supply power to the power supply system, by performing control to advance or delay a phase of a 3-phase current flowing in the motor or to reduce a percentage of the generated torque with respect to an effective value of the 3-phase current of the motor, or by applying a d-axis current to the motor. | 2009-01-29 |
20090026999 | MOTOR CONTROLLER - A motor controller ( | 2009-01-29 |
20090027000 | LINEARITY FOR FIELD WEAKENING IN AN INTERIOR PERMANENT MAGNET MACHINE - Systems and methods are disclosed to provide torque linearity in the field-weakening region for an IPM machine. The systems and methods adjust the q-axis and the d-axis components of the stator current commands of the IPM machine using a flux weakening and a torque linearity control loop respectively. Thereby, torque linearity is maintained during the field weakening region of operation of the IPM machine. | 2009-01-29 |
20090027001 | SOLAR POWERED APPARATUS - A solar powered apparatus that includes a battery, at least one photovoltaic cell (which may be part of a solar module comprising multiple photovoltaic cells), and a DC-capable AC appliance, such as a compact fluorescent light. The solar powered apparatus may also include a first DC to DC converter that receives a first electrical signal from the at least one photovoltaic cell and provides a charging signal to the battery, and a second DC to DC converter that receives a second electrical signal from the battery and provides a DC power signal to the DC-capable AC appliance. | 2009-01-29 |
20090027002 | POWER CONTROL INTERFACE & ENERGY STORAGE BETWEEN A WIND FARM AND A POWER TRANSMISSION SYSTEM - A power control interface between an unstable power source such as a wind farm and a power transmission line employs an electrical energy storage, control system, and electronic compensation module which act together like an “electronic shock absorber” for storing excess power during periods of increased power generation and releasing stored energy during periods of decreased power generation due to wind fluctuations. The control system is provided with a “look ahead” capability for predicting power output (wind speed conditions) and maintaining energy storage or release over a “narrow-band” range despite short duration fluctuations. The control system uses data derived from monitoring the wind farm power output and the power transmission line, and employs system-modeling algorithms to predict narrow-band wind speed conditions. The power control interface can also use its energy storage capacity to provide voltage support at the point of injection into the power transmission system, as well as fault clearance capability for “riding out” transient fault conditions occurring on the power transmission line. | 2009-01-29 |
20090027003 | Safety Circuit For Charging Devices - Systems and methods for implementing a safety circuit in charging devices are disclosed. In an exemplary embodiment, a method may include closing a latch to stop delivery of a charging current to a battery when voltage produced by the battery indicates that the battery is non-rechargeable. The method may also include dropping a threshold from an initial value for the voltage produced by the battery to a baseline value so that the latch remains closed even if the voltage produced by the non-rechargeable battery drops below the initial value of the threshold. The method may also include resetting the latch each time a battery is connected to the charging device. | 2009-01-29 |
20090027004 | PRESSURE RELIEF VALVE FOR A BATTERY CHARGER - A battery charger ( | 2009-01-29 |
20090027005 | CHARGING DEVICE - The invention relates to a loading device ( | 2009-01-29 |
20090027006 | Device for Improving the Charging or Discharging Process of a Battery - A device for balancing a plurality of at least two batteries or cells of a multicell battery comprises a multicell battery and a battery management system with a balancing circuit. Thereby all individual battery cells are connected to the battery monitoring system, wherein the battery monitoring system measures single cell voltage as well as the battery temperature and the current. The battery monitoring system is able to discern the lowest cell voltage and to discern a number of cells having a voltage higher than a determined maximum allowable voltage, which will be balanced until the charge imbalance decreases to an acceptable amount. The battery management system is active during charging and discharging of the multicell battery and the thresholds vary with the state of the battery. | 2009-01-29 |
20090027007 | METHOD AND DEVICE FOR DETERMINING BATTERY DISCHARGE CAPABILITY, AND POWER SUPPLY SYSTEM - Regarding a method for determining battery discharge capability of the present invention, the optimum state vector X is estimated by extended Kalman filter operation. Using the estimated state vector X, element parameters of an equivalent circuit are renewed to the optimum (step S | 2009-01-29 |
20090027008 | Battery module and charge and discharge method thereof - A battery module and a charge/discharge method thereof are provided. The battery module comprises a cell, a charge/discharge circuit, a temperature sensing circuit and a charge/discharge speed controlling circuit. The charge/discharge circuit is coupled to the cell. The temperature sensing circuit further comprises a temperature coefficient (PTC) device used for sensing a temperature of the cell, so that the temperature sensing circuit outputs a first analog signal according to the temperature of the cell. The charge/discharge speed controlling circuit, according to the first analog signal, outputs a control signal to the charge/discharge circuit to adjust a charge/discharge speed of the cell. | 2009-01-29 |
20090027009 | System and method for battery management - A method and system for managing a plurality of batteries and useable by way of example with a partially or completely electrically powered vehicle (EV) includes a plurality of monitor modules each coupled to at least one of the plurality of batteries and configured to monitor the voltage and temperature thereof, a master controller, and a non-conductive fiber optic network coupling the plurality of monitor modules to one another and to the master controller. The master controller commands the transmission of battery voltage and temperature information from the plurality of monitor modules over the network, receives battery voltage and temperature information from the monitor modules over the network, and perform calculations based on the received information to determine if any of the plurality of batteries require balancing measures, and based thereon, commands the corresponding monitor modules to implement balancing measures over the network. | 2009-01-29 |
20090027010 | PORTABLE COMMUNICATION DEVICE AND METHOD FOR CHARGING THROUGH DISCERNMENT OF CHARGING CABLE - A portable communication device and method for charging through discernment of a charging cable are provided. When the portable communication device is connected to an external charging device through a connector in order to charge a power source in the portable communication device, a configuration signal is received from the external charging device through a positive data line and a negative data line of the connector, a logic characteristic value is output according to the received configuration signal, the charging cable is discerned by analyzing a current characteristic through connection with a resistance circuit according to the on/off state of a switch which operates according to the logic characteristic value, and a control operation is performed such that a battery is charged from the external charging device through the corresponding charging cable. | 2009-01-29 |
20090027011 | BATTERY CHARGER - A batter charger for charging a secondary batter using a power supply circuit which converts an AC input into a DC output, includes a first resistor for detecting constant-current control and a second resistor for detecting end of charging. The first resister and the second register are inserted in series in a current path of the charging current. The power supply circuit has output characteristics of a constant-current control characteristic and a constant-voltage control characteristic. The constant-current control is performed using a first detection voltage generated at the first resistor, and the constant-voltage control is performed by comparing a second detection voltage generated at a series resistor composed of the first resistor and the second resistor with a reference voltage using a comparator, and detecting an end of charging indicated by the second detection voltage fallen below the reference voltage. | 2009-01-29 |
20090027012 | BATTERY CHARGER - A battery charger for charging a secondary battery using a power supply circuit, includes a discrimination circuit to discriminate a constant-current charging mode and a constant-voltage charging mode, and a controller to which a discrimination signal is supplied. When judged as being the constant-current charging mode, the controller sets the current in the constant-current charging mode by using the control signal. When judged as being the constant-voltage charging mode in accordance with the discrimination signal, the controller sets intermittently the end of charging detection current, and sets an end of charging detection period for judging the constant-current charging mode and the constant-voltage charging mode. When the discrimination signal indicates the constant-voltage charging mode in the end of charging detection period, the controller controls to shift to the end of charging detection mode. | 2009-01-29 |