14th week of 2009 patent applcation highlights part 14 |
Patent application number | Title | Published |
20090085429 | SURFACE ACOUSTIC WAVE DEVICE - A surface acoustic wave device has high power withstanding performance and is able to effectively suppress an undesirable spurious response. The surface acoustic wave device includes an LiNbO | 2009-04-02 |
20090085430 | COMPENSATION OF RESONATORS FOR SUBSTRATE AND TRANSDUCER ASSYMETRY - An in-line SAW resonator employs an asymmetric adjustment of the Bragg frequencies of the left outer reflector and right outer reflector where the degree of periodicity shift and the relative direction of the frequency shift are calculated to move the peaks of the acoustic standing wave trapped between the gratings to coincide with the optimized centers of transduction of one or more interdigital transducers (IDTs) without the need for undesirable breaks in the periodicity or the use of reflectionless IDTs. | 2009-04-02 |
20090085431 | PIEZOELECTRIC DEVICES AND METHODS FOR MANUFACTURING SAME - Devices are disclosed that include a piezoelectric vibrating piece; a glass base and lid form a package enclosing the piezoelectric vibrating piece. The piece has first and second electrodes. The base has first and second opposing surfaces. The base mounts the piezoelectric vibrating piece, and the lid seals the piezoelectric vibrating piece in the package. The base includes first and second metal wires, extending therethrough, whose ends are denuded to the first and second surfaces and connected to the first and second electrodes, respectively. In disclosed methods for making the packaged devices, such as piezoelectric oscillators, multiple packaged devices are made simultaneously by stacking and simultaneously bonding respective wafers on which glass bases, piezoelectric vibrating pieces, and lids have been formed. | 2009-04-02 |
20090085432 | SELF-POLING PIEZOELECTRIC MEMS DEVICE - A self-poling piezoelectric based MEMS device is configured for piezoelectric actuation in response to application of a device operating voltage. The MEMS device comprises a beam, a first electrode disposed on the beam, a layer of piezoelectric material having a self-poling thickness disposed overlying a portion of the first electrode, and a second electrode overlying the layer of piezoelectric material. The layer of piezoelectric material is self-poled in response to application of the device operating voltage across the first and second electrodes. In addition, the self-poled piezoelectric material has a poling direction established according to a polarity orientation of the device operating voltage as applied across the first and second electrodes. | 2009-04-02 |
20090085433 | DRIVE APPARATUS FOR ULTRASONIC MOTOR - A drive apparatus for an ultrasonic motor is provided wherein a diphase alternating drive signal having a predetermined phase difference and a predetermined drive frequency is applied to an ultrasonic vibrator equipped with a driver to be in contact with a driven member, such that longitudinal vibration and bending vibration are simultaneously generated in the ultrasonic vibrator to generate elliptical vibration, and drive force is obtained from the elliptical vibration to drive the driven member by the ultrasonic vibrator. The drive apparatus for the ultrasonic motor includes drive unit for generating the alternating drive signal and applying the alternating drive signal to the vibrator to drive the driven member, and burst drive unit for performing burst drive by applying, to the vibrator, a burst signal to inhibit residual vibration in the driven member after the driving of the driven member by the drive unit has been stopped. | 2009-04-02 |
20090085434 | DRIVE WAVE GENERATION CIRCUIT - To generate a drive wave for driving a piezo-actuator. Drive data concerning the number of drive waves supplied through a serial bus is stored in a drive data storage unit. A comparing circuit detects whether or not the number of drive waves have been generated, the number being specified by the drive data, and the drive wave keeps being generated until such detection is made. | 2009-04-02 |
20090085435 | Liquid transport apparatus, liquid transport head, and piezoelectric actuator - A liquid transport apparatus includes: a channel unit; a piezoelectric actuator which applies a pressure to a liquid in a pressure chamber and which has a first and a second piezoelectric layers, a first, a second, and a third electrodes, the first piezoelectric layer covering the pressure chamber and polarized in a thickness direction, the second piezoelectric layer being joined to a surface of the first piezoelectric layer and polarized in a thickness direction, the first electrode being formed on a surface of the first piezoelectric layer, the second electrode being formed on a surface of the second piezoelectric layer, the third electrode being formed between the first piezoelectric layer and the second piezoelectric layer; a driving mechanism which drives the piezoelectric actuator and which has a potential applying mechanism applying potentials to the first, second, and third electrode respectively, and a controller controlling the potential applying mechanism. | 2009-04-02 |
20090085436 | Electrical Component that Includes a Ceramic Substrate and Piezoelectric Transformer - An electrical component includes a ceramic substrate and a piezoelectric transformer, which is connected electrically and mechanically to the ceramic substrate. | 2009-04-02 |
20090085437 | HYBRID THIN FILM HETEROSTRUCTURE MODULAR VIBRATION CONTROL APPARATUS AND METHODS FOR FABRICATION THEREOF - Microelectromechanical systems (MEMS) include critical devices for various highly sensitive applications. However, MEMS operation may be impaired by vibration. A modular vibration control pedestal for integration with a MEMS is provided according to embodiments of the present invention which includes a piezoelectric perovskite oxide disposed on a substrate and a shape memory alloy component disposed on the piezoelectric perovskite oxide. In particular embodiments of a MEMS device including a modular VCP, vibration is reduced by at least 50%. | 2009-04-02 |
20090085438 | PIEZOELECTRIC FAN, COOLING DEVICE CONTAINING SAME, AND METHOD OF COOLING A MICROELECTRONIC DEVICE USING SAME - A piezoelectric fan includes a piezoelectric actuator patch ( | 2009-04-02 |
20090085439 | Ultrasonic sensor - An ultrasonic sensor is disclosed. The ultrasonic sensor includes a plurality of sensor elements arranged in an array. Each sensor element includes an ultrasonic sensing element and an acoustic matching member. The ultrasonic sensor further includes a bonding member having a thickness approximately equal to a space interval between adjacent ultrasonic sensing elements. The bonding member adhesively fixes the plurality of sensor elements, and includes a portion contacting each ultrasonic sensing element. An elastic modulus of the portion is smaller than that of each ultrasonic sensing element. | 2009-04-02 |
20090085440 | ULTRASONIC PROBE - A wideband and high sensitive ultrasonic probe adaptable to harmonic imaging by improving the sensitivity of vibrators in a wider frequency band without hindering the operation of piezoelectric materials. The ultrasonic probe includes: a vibrator array including plural vibrators for transmitting and/or receiving ultrasonic waves, each of the plural vibrators including plural piezoelectric materials arranged in parallel between a first electrode and a second electrode and having different frequency constants from one another; at least one acoustic matching layer provided on a first surface of the vibrator array; and a backing material provided on a second surface opposite to the first surface of the vibrator array. | 2009-04-02 |
20090085441 | PIEZOELECTRIC TRANSDUCERS AND ASSOCIATED METHODS - Piezoelectric transducers and associated methods are disclosed. In one embodiment, a piezoelectric transducer includes a support member, a piezoelectric element attached to the support member, and a pressurized chamber at one side of the piezoelectric element. The piezoelectric element comprises a flexible film, and the pressurized chamber contains a fluid that applies a static pressure to a side of the piezoelectric element. | 2009-04-02 |
20090085442 | Passive self-tuning resonator system - The invention is a system incorporating a self-tuning resonator and method of self-tuning a resonator within a system. In one embodiment, a method of powering a system with energy harvested from a vibrating surface includes receiving a first mechanical energy at a first driving frequency from the vibrating surface, transferring the received first mechanical energy to a suspended structure within the system, vibrating the suspended structure with the transferred first mechanical energy, passively adjusting the resonant frequency of the suspended structure to a first resonant frequency associated with the first driving frequency by moving a movable mass in response to the movement of the suspended structure, vibrating the adjusted suspended structure with the transferred first mechanical energy, generating electrical energy using the vibrations of the adjusted suspended structure, and powering the system with the generated electrical energy. | 2009-04-02 |
20090085443 | Piezoelectric device and liquid-ejecting head - The piezoelectric device includes a substrate, a first electrode deposited on the substrate, a piezoelectric film deposited on top of at least a part of the first electrode by vapor phase deposition, a second electrode deposited on the piezoelectric film and having a water vapor transmission rate of not more than 1 g/m | 2009-04-02 |
20090085444 | Dielectric elastomer fiber transducers - Disclosed are electroactive polymer fibers, processes of preparing electroactive polymer fibers, and devices containing electroactive polymer fibers. Devices can be used as actuators and sensors, generators and transducers. Applications include inter alia artificial muscles, prosthetics and robotics. | 2009-04-02 |
20090085445 | PEROVSKITE-OXIDE LAMINATION, PIEZOELECTRIC DEVICE, AND LIQUID DISCHARGE DEVICE - A perovskite-oxide lamination constituted by a substrate and one or tore first films of a first oxide of a perovskite type and one or more second films of a second oxide which are alternately formed over the substrate. The first oxide has a composition expressed as ABO | 2009-04-02 |
20090085446 | SWITCHING DEVICE, GENERATOR-MOTOR APPARATUS USING SWITCHING DEVICE, DRIVE SYSTEM INCLUDING GENERATOR-MOTOR APPARATUS, AND COMPUTER-READABLE RECORDING MEDIUM ON WHICH A PROGRAM FOR DIRECTING COMPUTER TO PERFORM CONTROL OF GENERATOR-MOTOR APPARATUS IS RECORDED - A generator-motor apparatus includes a control circuit, an alternator, electrode plates, and switching devices. The electrodes plates have a substantial horseshoe shape, and are provided on an end surface of the alternator so as to surround a rotating shaft of the alternator. Each of the switching devices is formed by sandwiching a MOS transistor between two electrodes, and has a can structure for sealing the internal space of the switching device using a resin. The switching devices are directly attached to the electrode plate by means of soldering, and the switching devices are directly attached to the electrode plate by means of soldering. The control circuit controls the switching devices. The switching devices drive the alternator as an electric motor or an electric power generator. | 2009-04-02 |
20090085447 | SAFETY CONTAINER - A safety container can include a hazard indicator located on an external surface thereof. The hazard indicator can include indicia to convey to personnel in the vicinity the nature of the hazard posed by the materials stored in the safety container. The hazard indicator can be made, at least in part, of a reflective material, preferably a retroreflective material. The indicator is disposed on the exterior surface of the safety container to help personnel locate the safety container in low light situations and to indicate the nature of the contents stored in the safety container, especially in situations where the safety container is located in a room where there is smoke or low light. The safety container can be in the form of a safety cabinet or a portable safety can, for example. | 2009-04-02 |
20090085448 | MULTI-FUNCTION TOOL BOX WITH SIDE DOORS - This utility model relates to a type of multi-function tool box with side doors, consisting of a base with foot wheels, head plate, left and right side boards, box body formed by a group of drawers, and handle. Drawers in the box slightly draw back at left and right sides. At rear of the box, fixed left and right side boards are provided. In available space formed between fixed external side boards and left/right drawn back drawer side plates, parts container is provided. At left and right side of drawers in front of this available space, left and right side doors that can be opened and function as part of left/right side board and part of front board of the box. On internal walls of these side doors, tool hanging plates with holes are provided. When these side doors move outward, the tool box is open; when they are withdrawn, an enclosed box is formed. Compared with traditional tool box, space availability is apparently high, quantity of tools and spares that can be stored in this box is large, types of such tools and spares are complete, and taking of these tools and spares is convenient, greatly facilitating site maintenance and service, and providing very strong practicality. | 2009-04-02 |
20090085449 | Extension apparatus for previously installed electrical cabinets - An extension device for an electrical cabinet includes a plurality of panel members, an access port in a first panel member of the plurality of panel members, a top engaging the plurality of panel members, and wherein the plurality of panel members is connected and defines a functional area. | 2009-04-02 |
20090085450 | LEVER TYPE TOOL BOX DRAWER LOCKING MECHANISM - This utility model relates to a lever type tool box drawer locking mechanism, consisting of control mechanism comprising | 2009-04-02 |
20090085451 | MEDICINE DELIVERING DEVICE - A medicine delivering device permits additional medicine cassettes to be provided at low cost without greatly enlarging the installation space. The medicine delivering device includes a medicine storage and removal unit in which many medicine cassettes each containing a medicine are detachably provided to the outer surface of a drum whose upper and lower ends are rotatable supported by the device body and a medicine packaging unit that packages medicine removed through a collecting hopper from the medicine cassette of the medicine storage and removal unit. There is provided on the side surface of the device body a sub medicine storage and removal unit including: a body; a drawer body provided to be capable of being pulled out from the body and that is detachably provided with a plurality of medicine cassettes each containing the medicine; and a guide that guides the medicine taken out from the medicine cassette to the collecting hopper. | 2009-04-02 |
20090085452 | FURNITURE PULL-OUT GUIDE - A furniture pull-out guide includes a guide rail with a hollow profile defining a base web, first and second longitudinal webs disposed at predetermined angles to the base web, and transition regions connecting the base web with the first and second longitudinal webs. The guide also includes a first axle moveable longitudinally with respect to the guide rail, at least a first roller rotatably disposed on the first axle, and at least a second roller disposed on the first axle adjacent to the first roller. The first roller and the second roller are adapted to rotate independently of one another. | 2009-04-02 |
20090085453 | Shelf assembly for a refrigerator compartment - A vertically step-adjustable shelf includes a panel of tempered glass and two open frames. A pair of metal shelf brackets can be staked to the frames to provide vertical step-adjustment of the shelf. The vertically step-adjustable shelf can be further simplified by eliminating one of the open frame members and staking the metal shelf brackets to side frame portions of but a single outer/uppermost open frame member. In each of the shelves various components utilized in the assembly thereof, such as stake projections, heads and openings are hidden from view when the shelves are in their horizontal in-use position. Hence, each shelf presents a highly desirable aesthetic appearance, yet is strong and can be manufactured and sold at a reasonable price. | 2009-04-02 |
20090085454 | THERMAL MANGEMENT ARTICLE HAVING THERMAL WAVE GUIDE - An article includes a stack of display layers including a display layer having a high-shear modulus that is sandwiched between two display layers having a low-shear modulus. The display layers include a light-emitting device that generates heat and light during use. The heat generated by the display layers may form localized heat-sources in the stack. The display layer with the high-shear modulus is a thermal transport layer through which the localized heat-sources-induced guided elastic waves propagate along an acoustic waveguide plane and can transport the heat generated by the light-emitting device away from the light-emitting device. Alternately, a display layer having a high refractive index may be sandwiched between two display layers having a low refractive index. The display layers with low shear modulus or low refractive index may be replaced with thermal transport layers having low shear modulus or low refractive index respectively. | 2009-04-02 |
20090085455 | Metal Halide Reflector Lamp with Beam Color Homogenizer - A novel metal halide reflector lamp is described wherein the reflector lamp has a passive optical element to scramble, color mix, and otherwise commingle the light emitted by the metal halide burner. The optical element is placed close to the radiating plasma volume to intercept a large solid angle. Preferably, the optical element substantially intercepts the emitted light within a solid angle that has its vertex at the center of the discharge volume of the burner and is subtended by the open end of the reflector. The optical element can be designed to scatter, reflect or refract the light emanating in this solid angle which otherwise would not impinge on the primary optical control surface of the reflector. | 2009-04-02 |
20090085456 | Automotive lamp coil - Traditional methods of making headlamp coils have left a portion of the coils with slightly irregular forms. These irregularities can result in defects in the ultimate beam pattern. Accommodating these defects in robust lamp and headlamp optical systems can reduce the performance that might otherwise be available. The preferred coil is therefore continuously coiled as a straight body, and carefully cut into segments. Subsequently, legs are welded to the coil segment ends. The coil is then left substantially undistorted by the manufacturing process that would otherwise normally leave a portion of the coils distorted. The method particularly enables a functional center leg coil. | 2009-04-02 |
20090085457 | FIELD EMISSION CATHODE AND METHOD FOR MANUFACTURING THE SAME - A field emission cathode and a method for manufacturing the same are disclosed. In the present invention, the carbon nanotube is coated with an amorphous coating material so that the above-mentioned field emission cathode resists oxidization in a high electrical field and the structure thereof can be protected. Additionally, the field emission cathode can exhibit field emission performance in a low electrical field, and generate stable current as the electrical field increases so that the efficiency and stability of the field emission current can be enhanced. | 2009-04-02 |
20090085458 | FLUORESCENT MATERIAL AND LIGHT-EMITTING DEVICE - A fluorescent material includes first and second phosphors. The first phosphor is a light-storing phosphor, which is represented by the general formula (M | 2009-04-02 |
20090085459 | PROTECTIVE LAYER FOR CORROSION PREVENTION DURING LITHOGRAPHY AND ETCH - Forming a protective layer such as chromium, chrome alloys, nickel or cobalt as a cap over an aluminum film protects an underlying ITO layer from corrosion during the fabrication of flat panel displays such as field emission devices and the like. The presence of the protective layer during fabrication processes such as photolithography prevents diffusion of solutions through the aluminum into the ITO. This protective layer is especially effective during the development and resist stripping stages of photolithography which use solutions or solvents that would otherwise cause reductive corrosion of ITO in contact with aluminum. The methods and apparatus described herein are particularly advantageous for the fabrication of flat panel displays such as field emission devices and other display devices, because ITO is often used in such devices in contact with aluminum while exposed to corrosion-inducing media. | 2009-04-02 |
20090085460 | FLUORESCENT DISPLAY DEVICE AND MANUFACTURING METHOD THEREFOR - A fluorescent display device includes a housing having with a glass substrate and a circuit board adhered to the inner surface of the glass substrate of the housing. The circuit board includes an anode formed of multiple anode conductors, control elements for controlling the anode conductors and a phosphor layer formed on the anode conductors. The fluorescent display further includes an electron source formed above the anode in the housing, from which electrons are bombarded to the phosphor layer corresponding to the anode conductors selected by the control elements so that a desired display can be obtained. An aluminum thin film with the aluminum area ratio within a range from 30 to 60% is formed on the inner surface of the glass substrate and the circuit board is fixed to the aluminum thin film via a die-bond material. | 2009-04-02 |
20090085461 | Sheet-shaped heat and light source, method for making the same and method for heating object adopting the same - The present invention relates to a sheet-shaped heat and light source. The sheet-shaped heat and light source includes a carbon nanotube layer and at least two electrodes. The at least two electrodes are separately disposed on the carbon nanotube layer and electrically connected thereto. Moreover, a method for making the sheet-shaped heat and light source and a method for heating an object adopting the same are also included. | 2009-04-02 |
20090085462 | Printing Conductive Patterns Using LEP - A method of printing an electrode component is disclosed. The method can include steps of electrostatically printing a polymer onto a substrate, where at least a portion of the printing occurs while the polymer is in a first conductive state, and altering the polymer to a second conductive state that is more conductive than the first conductive state, thereby forming the electronic component. | 2009-04-02 |
20090085463 | THERMO-OPTICALLY FUNCTIONAL COMPOSITIONS, SYSTEMS AND METHODS OF MAKING - A high temperature, stabilized thermo-optically functional composite is disclosed. The composite includes a phase stabilized matrix including a first component stabilized by a second component and a plurality of discrete metallic particles interspersed with respect to the matrix, wherein the composite is stable at temperatures greater than about 2000 degrees K. | 2009-04-02 |
20090085464 | Resin Composition and Sheet Containing Phosphor, and Light Emitting Element Using Such Composition and Sheet - Provided is a phosphor for a white light emitting device with a blue to ultraviolet light as a light source. | 2009-04-02 |
20090085465 | FLUOROPHOR AND METHOD FOR PRODUCTION THEREOF AND ILLUMINATOR - A fluorophor comprising, as a main component, an α-type sialon crystal which contains at least an A element (wherein A represents one or more elements selected from among Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Er, Tm and Yb), an M element (wherein M represents one or more elements selected from among Li, Na, Mg, Ca, Y, La, Gd and Lu), Si, Al, oxygen and nitrogen, and is represented by the general formulae: (M | 2009-04-02 |
20090085466 | Fluorescent display device and conductive paste for the fluorescent display device - A fluorescent display device includes an aluminum wiring layer formed on an insulating substrate; an insulating layer formed on the aluminum wiring layer, the insulating layer being provided with a through-hole disposed on the aluminum wiring layer; a conductive layer filled in the through-hole. The fluorescent display device further includes an anode conductor formed on the insulating layer to cover the conductive layer and a phosphor layer formed on the anode conductor. The conductive layer is formed of solid mixture containing aluminum and graphite. | 2009-04-02 |
20090085467 | Yellow Emitting Ce3+ Doped Calcium Silicate Phosphor and White Light Emitting Diodes Including Ce3+ Doped Calcium Silicate Phosphor - The present invention is directed to phosphors and white light emitting diodes and a method for preparing a Ce | 2009-04-02 |
20090085468 | AROMATIC AMINE DERIVATIVES AND ORGANIC ELECTROLUMINESCENCE DEVICES USING THE SAME - An aromatic amine derivative with a specified structure. An organic electroluminescence device which comprises one or more organic thin film layers having at least one light emitting layer sandwiched between a cathode and an anode, wherein at least one of the organic thin film layers comprises the aromatic amine derivative singly or in combination. The organic EL device employing the aromatic amine derivative has sufficient lifetime, exhibits an enhanced efficiency of light emission, and emits highly pure blue light. | 2009-04-02 |
20090085469 | LUMINESCENT METAL COMPLEX, METHOD FOR PRODUCING SAME AND ORGANIC ELECTROLUMINESCENT LIGHT-EMITTING DEVICE USING SAME - A metal complex compound with a structure containing metals such as iridium, and a monodentate ligand such as a hydrogen atom other than a bidentate ligand. An employment of a metal compound with a ligand having two oxygen atoms as a material for preparing the metal complex compound. An organic electroluminescence device being composed of one or more organic thin film layers having at least a light emitting layer sandwiched between a pair of electrodes wherein at least one of the organic thin film layer contains the metal complex compound. The organic electroluminescence device has an excellent stability, a great efficiency and a long lifetime of light emission due to the metal complex compound. | 2009-04-02 |
20090085470 | ORGANIC LIGHT EMITTING DEVICE - An organic light emitting device includes a first electrode; a second electrode; an emitting layer interposed between the first electrode and the second electrode; and a hole injection layer interposed between the first electrode and the second electrode. The hole injection layer includes a first compound having an element selected from the group consisting of Mo, Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, and B and an element selected from the group consisting of O, F, S, Cl, Se, Br, and I; and a second compound that is an organic hole injection layer forming compound. These compounds have excellent electrical properties, and are suitable for a fluorescent and phosphorescent device emitting light of a full range of colors, such as red, green, blue, or white. Therefore, an organic light emitting device including the hole injection layer exhibits a high efficiency and high luminance at low voltage, and has a long lifetime. | 2009-04-02 |
20090085471 | Organic El Display Device - An organic EL display device (A | 2009-04-02 |
20090085472 | Solution-Processed Organic Electronic Structural Element with Improved Electrode Layer - A solution-processed organic electronic structural element has an improved electrode layer. Located between the active organic layer and the electrode layer there is either an interface or an interlayer containing a cesium salt. | 2009-04-02 |
20090085473 | ELECTROLUMINESCENT ELEMENT AND MANUFACTURING METHOD THEREOF - A primary object of this invention is to provide a manufacturing method for an EL element, which can facilitate patterning for a luminescent layer containing quantum dots. This method includes: a wettability-changing-layer-forming step for forming a wettability changing layer containing a photocatalyst, on a substrate having a first electrode layer formed thereon, wherein wettability of the wettability-changing layer is changed by an effect of the photocatalyst associated with irradiation with energy; and a wettability-changing-pattern forming step for forming a wettability changing pattern composed of lyophilic regions and liquid-repellent regions, on a surface of the wettability changing layer, by irradiating the wettability changing layer with energy in a patterning manner. Additionally, in this method, a luminescent layer is formed onto each lyophilic region, by coating a luminescent-layer-forming coating liquid containing the quantum dots, around each of which ligands are attached. In this way, the EL element can be obtained. | 2009-04-02 |
20090085474 | Light-Emitting Element, Light-Emitting Device, and Electronic Appliance - In a light-emitting element including an EL layer between a pair of electrodes, between an electrode functioning as an anode and a fourth layer having a light-emitting property (light-emitting layer), the EL layer includes at least a first layer having a hole-injecting property (hole-injecting layer), a second layer having a hole-transporting property (first hole-transporting layer), and a third layer having a hole-transporting property (second hole-transporting layer). The absolute value of the highest occupied molecular orbital level (HOMO level) of the second layer is larger than the absolute value of the highest occupied molecular orbital level (HOMO level) of each of the first layer and the third layer. With such a structure, the rate of transport of holes injected from the electrode functioning as an anode is reduced and emission efficiency of the light-emitting element is improved. | 2009-04-02 |
20090085475 | ORGANIC LIGHT EMITTING DIODE - An organic light emitting diode (OLED) includes an anode, a cathode, and an organic multi-layer structure disposed between the anode and the cathode. The inner potential distribution of the organic multi-layer structure has a non-linear profile. | 2009-04-02 |
20090085476 | RED PHOSPHORESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME - Disclosed herein is a red phosphorescent compound represented by Formula 1 below: | 2009-04-02 |
20090085477 | ORGANIC LIGHT EMITTING DIODE DISPLAY - An organic light emitting device includes a first pixel, a second pixel, and a third pixel to display different colors from each other, wherein the organic light emitting device includes a first electrode, a second electrode facing the first electrode, a light emitting member disposed between the first electrode and the second electrode, and a translucent member disposed on or under the first electrode and forming a micro-cavity along with the second electrode. The translucent member has the same thickness in the first pixel as in the second pixel. | 2009-04-02 |
20090085478 | LED DEVICE HAVING IMPROVED LIGHT OUTPUT - A thin-film, white-light-emitting diode device includes a reflective, conductive thin-film structure and a semi-transparent, conductive thin-film structure. One or more thin-film layers are formed between the reflective and semi-transparent conductive thin-film structures to form two or more commonly-controlled microcavity structures. The thin-film layers emit white light in response to current provided by the conductive thin-film structure. Each of the two or more commonly-controlled microcavity structures has a different resonant frequency within one or more optical cavities and emits light with a smaller spectral range than the spectral range of the white-light-emitting thin-film layer(s). A combination of light emitted from the two or more commonly-controlled microcavity structures is white. | 2009-04-02 |
20090085479 | Light-emitting element, lighting device, light-emitting device, and electronic device - A light-emitting element whose degree of deterioration with driving time is improved and of which emission colors are easily controlled. A light-emitting emitting element having a first electrode, a second electrode, and a layer containing an organic compound located between the first electrode and the second electrode, in which the layer containing the organic compound at least has, from the second electrode side, a light-emitting layer in which a first layer, a second layer, and a third layer are stacked, and a hole-transporting layer provided in contact with the third layer; the first layer contains a first organic compound and a second organic compound; the second layer contains a third organic compound and a fourth organic compound; and the third layer contains the first organic compound and a fifth organic compound. | 2009-04-02 |
20090085480 | TRANSPARENT DRYING AGENT AND ORGANIC ELECTROLUMINESCENT DEVICE - A transparent drying agent includes a mixture of an alkoxide of the Group II, Group III or Group IV metal and a transparent organic polymer which is inert to and soluble with this metal alkoxide. | 2009-04-02 |
20090085481 | Tungsten-Halogen Quartz Lamp - A tungsten-halogen quartz lamp with a structure for preventing glass-bead supporter from breaking off, which can insure that its glass-bead supporter could not leave and drop from the top of a bulb in any case, so that reliability of a holding-filament structure is greatly improved and the service life of the lamp is prolonged. For this purpose, a concave-baking ring is provided at the circumference of the bulb, which corresponds to a position below the glass-bead supporter which is mounted in the upper of inner-cavity of the bulb in a horizontal direction, to restrict the glass-bead supporter to the upper of the bulb. | 2009-04-02 |
20090085482 | Method of Manufacturing Barrier Rib for Plasma Display Panel - Disclosed herein is a method of manufacturing a barrier rib for a plasma display panel, including a silicon compound resin. The method according to a first embodiment of this invention includes providing a silicon compound resin layer on a substrate; pressing the silicon compound resin layer using a master having a pattern corresponding to the shape of a barrier rib to be transferred; and curing the silicon compound resin and then releasing the master. In addition, the method according to a second embodiment includes loading a silicon compound resin into grooves of a master having a pattern corresponding to the shape of a barrier rib; pressing the master on a substrate to transfer the silicon compound to the substrate; and curing the transferred silicon compound resin and then releasing the master. | 2009-04-02 |
20090085483 | PLASMA DISPLAY PANEL - A plasma display panel includes: a first substrate; a second substrate facing the first substrate; barrier ribs disposed between the first and second substrates to partition a plurality of discharge cells; address electrodes formed on the first substrate to extend in a first direction corresponding to the discharge cells; display electrodes formed on the second substrate to extend in a second direction intersecting the first direction corresponding to the discharge cells; phosphor layers formed in inner portions of the discharge cells; and a dielectric layer formed on the second substrate to cover the display electrodes, wherein the dielectric layer is constructed with a plurality of layers having different refractive indexes. | 2009-04-02 |
20090085484 | METAL HALIDE LAMP AND LIGHTING APPARATUS USING THE SAME - A metal halide lamp according to the present invention includes: an outer tube | 2009-04-02 |
20090085485 | DISPLAY DEVICES WITH AMBIENT LIGHT SENSING - A display device comprises an illumination source ( | 2009-04-02 |
20090085486 | APPARATUS AND METHOD FOR MANAGING THE POWER OF ILLUMINATION DEVICES - An apparatus for managing the power of an illumination device supplied by a power source includes a switch, a switch controller, an imaging unit, and a pattern recognition unit. The switch is configured for electrically connecting or disconnecting the illumination device and the power source. The switch controller is configured for controlling the switch, thereby switching off the illumination device. The imaging unit is configured for capturing an image of an illuminated area illuminated by the illumination device. The pattern recognition unit is configured for detecting whether any person is contained in the captured image, and if not, instructing the switch controller to switch off the illumination device. | 2009-04-02 |
20090085487 | LIGHT SETS - A light set including multiple circuits or light strings and utilizing a single set of electrical connectors. The electrical connectors include a male electrical connector for connection to an electrical power source, such as a wall outlet, and a female connector for receiving a male electrical connector of another light set. The multiple light strings allow a unique light size and electrical rating to be coupled to each light string. Moreover, the multiple light strings may be assembled to produce an array of aesthetically pleasing light arrangements utilizing the different sized lights. | 2009-04-02 |
20090085488 | BACKLIGHT FOR ELECTRONIC DEVICES - Techniques are described to enhance a backlight design for electronic devices. A circuit is described to provide backlight for a display of an electronic device. In an implementation, the circuit includes a collection of light elements arranged electrically in a series and includes one said light element of the series which is operable both with the collection and independently of the collection. In another implementation, the one said light element is arranged to be in a last position of the series electrically and physically is arranged to correspond to a center portion of the display of the electronic device. | 2009-04-02 |
20090085489 | CIRCUIT AND METHOD FOR DRIVING AND CONTROLING LIGHT SOURCE - A light source driving circuit including a driving module, a plurality of first switches, a detecting unit, and a control unit is provided. The plurality of first switches is respectively coupled to corresponding light sources and these light sources are driven by the driving module. The detecting unit is coupled to the driving module to detect a working parameter of each light source and transmit the working parameter to the control unit. When the detecting unit detects some of these light sources are broken down, the control unit sequentially turns on the first switches to find out the failed light source. Moreover, the first switch coupled to the failed light source is remained on, and the driving signal is regulated according to the number of the failed light source, such that the brightness of the panel does not decrease. | 2009-04-02 |
20090085490 | Light Emitting Diode Driver Circuit With Shunt Switch - A LED driver circuit avoids undesirable light generated by a LED due to leakage current by shunting the output terminal to the feedback terminal during periods when it is desired that the LED remain turned off. The shunting operation is achieved by providing a switch (e.g., a FET) that is connected between the output and feedback terminals of the LED, and is controlled by the user supplied reference signal. During active operation (i.e., when the user supplied reference signal is “enabled” and the LED is lit), the switch remains open, allowing the driver circuit to generate the desired driving voltage across the LED. During inactive periods (i.e., when the user supplied reference signal is “disabled” and the LED is intended to be off), the switch is closed, which couples the output and feedback terminals to generate an essentially zero voltage drop across the LED. | 2009-04-02 |
20090085491 | Starter auxillary electrode starting device with an arc gap - A device for operating or starting a high-pressure discharge lamp ( | 2009-04-02 |
20090085492 | Device for operating or starting a high-pressure discharge lamp lamp socket and illumination system wtih such a device and method for operation of a high-pressure discharge lamp - The invention relates to a device for operating or starting a high-pressure discharge lamp ( | 2009-04-02 |
20090085493 | Electronic Ballast for Discharge Lamps Having an Eol Monitoring Circuit - The invention relates to an electronic ballast for a discharge lamp LA | 2009-04-02 |
20090085494 | IMPROVEMENT TO LIGHTING SYSTEMS - The present invention relates to power adaptors for solid state lighting units and fixtures, of a kind including light emitting diodes, one of the adaptors comprising an input for receiving a phase controlled input power signal of varying on-duration and a controller coupled to the input and operable to produce at least one pulsed output driving signal in which both the duration and height of the pulses are varied according to the on-duration of the input power signal, to thereby control a light intensity output of the solid state lighting unit, such that the output is made to vary in a way that substantially matches the intensity response of the human eye. Various other arrangements of power adaptors are described along with dimmer controllers for use with the power adaptors, including some which involve motion sensing techniques. | 2009-04-02 |
20090085495 | LIGHT SOURCE AND PROJECTOR - A light source includes an discharge lamp including a first electrode and a second electrode emitting light by discharge between them, a drive unit performing a steady operation which supplies steady energy to the first and second electrodes and an initial operation which supplies energy to the first and second electrodes with an operation different from the steady operation before performing the steady operation, a determination unit determining states of the discharge lamp and a data storage unit storing plural initial power feeding conditions provided corresponding to states of the discharge lamp as examples of the initial operation and plural steady power feeding conditions provided corresponding to the states of the discharge lamp as examples of the steady operation, in which the drive unit performs the initial operation in any one of conditions selected from the plural initial power feeding conditions according to a determination result by the determination unit and performs the steady operation in any one of conditions selected from the plural steady power feeding conditions according to a determination result by the determination unit. | 2009-04-02 |
20090085496 | LED controller and lighting system - A LED controller that allows the user to control the output intensity of one or more LED lights is disclosed. The intensity levels or brightness of the LED lights are not limited to 3, 4 or even 10 levels of light output; instead, the LED controller provides what appears to the human eye as a smooth range of changing brightness levels depending on the needs the user. | 2009-04-02 |
20090085497 | Skylight LED lighting system - A skylight LED lighting system is described. The system utilizes LED lights attached to or near a skylight in order to provide a user with the ability to increase the amount of light being directed into an area. The system can utilize a LED controller to allow the user to control the light output intensity. The LED controller provides a smooth range of changing brightness levels. The system can utilize one or more solar cells and batteries to power the LED lights. The system can be controlled via a radio frequency remote control. Additionally, the system can utilize a flexible, skylight-shaped installation housing that can be inserted into the skylight under compression. When the compression is released, the ring expands to press against the inside of the skylight and holds the skylight LED lighting system in place. | 2009-04-02 |
20090085498 | Electron emission device for back light unit and liquid crystal display thereof - The electron emission display device includes a light source unit having a plurality of gate electrodes and a plurality of cathode electrodes, the light source unit configured to emit electrons in accordance with voltages of the gate electrode and the cathode electrode, and to direct the emitted electrons to an anode electrode, a gate driver configured to transmit a driving waveform to the gate electrodes, and a cathode driver configured to transmit a driving waveform to the cathode electrodes, wherein at least one driving waveform transmitted by the gate driver and the cathode driver is a non-impulse waveform. | 2009-04-02 |
20090085499 | SUBAREA CONTROL SYSTEM OF ELECTRICAL LIGHTING SEPARATED BY A DEMARCATION REPEATER - A subarea control system of electrical lighting separated by a demarcation repeater | 2009-04-02 |
20090085500 | SYSTEMS AND METHODS FOR PROVIDING AN OEM LEVEL NETWORKED LIGHTING SYSTEM - The present application is generally directed to systems and methods for control and management of lighting components connected in a network. A user specified rule is executed to control lighting effects in a lighting network which comprises an interface module in communication with one or more lighting control modules. The interface module may receive a rule for controlling a lighting network. The rule may comprise a user identified input and a user specified lighting effect to occur responsive to the user identified input. The interface module detects receipt of the user identified input and executes the rule to trigger the user specified lighting effect via the one or more lighting control modules. | 2009-04-02 |
20090085501 | CONSTANT CURRENT DRIVER CIRCUIT WITH VOLTAGE COMPENSATED CURRENT SENSE MIRROR - A current sensing circuit for sensing the current provided to LEDs by a constant current power source includes a resistive shunt in series with the load and a current mirror having a first leg connected to a first terminal of the resistive shunt and a second leg connected to a second terminal of the resistive shunt. Both legs of the current mirror are also connected to ground. The first leg provides a reference signal to the second leg, and the second log uses the reference signal and a voltage at the second terminal of the resistive shunt to provide a ground referenced output signal indicative of the current provided to the LEDs. | 2009-04-02 |
20090085502 | Method and Apparatus for Maximizing the Sustainable Flash of a Handheld Portable Electronic Device - A method and apparatus for maintaining a maximum sustained flash current over the whole length of a flash using a programmable current drive in a handheld portable device powered by a battery. The method involves measuring the battery voltage before and after a flash is initiated and calculating the equivalent series resistance (ESR) of the battery. The calculated ESR is then used to adjust the flash current. The process may be repeated to correct for errors in the flash current. | 2009-04-02 |
20090085503 | On-vehicle LED illumination device - An LED illumination device | 2009-04-02 |
20090085504 | TECHNIQUES FOR CONTROLLING A CHARGED PARTICLE BEAM - Techniques for controlling a charged particle beam are disclosed. In one particular exemplary embodiment, the techniques may be realized as a charged particle acceleration/deceleration system. The charged particle acceleration/deceleration system may comprise an accelerator column, which may comprise a plurality of electrodes. The plurality of electrodes may have apertures through which a charged particle beam may pass. The charged particle acceleration/deceleration system may also comprise a voltage grading system. The voltage grading system may comprise a first fluid reservoir and a first fluid circuit. The first fluid circuit may have conductive connectors connecting to at least one of the plurality of electrodes. The voltage grading system may further comprise fluid in the first fluid circuit. The fluid may have an electrical resistance. | 2009-04-02 |
20090085505 | Electric drive unit - Electric drive units comprising a common active part having a stator and a rotor, which has windings and/or permanent magnets for a drive function and an energy transmission function, enable the rotor winding that is provided for energy transmission to be used to allow position detection at a low additional cost. For this purpose, a power converter in the rotor, which provides the output of electrical energy for the energy transmission function, impresses an alternating voltage into the rotor winding, said voltage being detected in the stator and allowing the rotor position to be determined. | 2009-04-02 |
20090085506 | FAN DRIVING SYSTEM WITH SAFE DRIVING CURRENT SWITCHING - An exemplary fan driving system includes a driving device and a MOSFET group. The driving device includes a first adjustable resistor connected between its first voltage signal input terminal and ground, and a second adjustable resistor connected between its second voltage signal input terminal and ground. The MOSFET group includes two N-type MOSFETs and two P-type MOSFETs. The first terminal of the fan is connected to an anode of D | 2009-04-02 |
20090085507 | SIMULATED ENCODER PULSE OUTPUT SYSTEM AND METHOD - The invention includes a system and method for generating simulated encoder outputs in a control system. An output pulse width between reference position inputs is computed, the output pulse width being based upon a difference between an updated reference position input and a previous reference position input, and upon a time interval between the reference position inputs. Next, a plurality of simulated encoder pulses is output between updates of the reference position input based upon the computed output pulse width. The output pulse is thereafter adjusted in a closed loop manner between updates of the reference position input. | 2009-04-02 |
20090085508 | MOTOR CONTROLLER, CONTROL SYSTEM, AND CONTROL METHOD - A motor controller includes a reference signal generator; an A/D converter performing A/D conversion of the cosine and the sine signals outputted from a resolver; a first amplitude calculator calculating cosine and sine signal amplitudes based on twice-A/D converted cosine and sine signals respectively; a second amplitude calculator calculating averages of the cosine and the sine signals, and that calculates the amplitude of the cosine signal from a difference between the cosine signal average and a latest A/D converted cosine signal, and that calculates the amplitude of the sine signal from a difference between the sine signal average and a latest A/D converted sine signal; a synthesizer synthesizing the cosine and sine signal amplitudes obtained by the first and the second amplitude calculators respectively; a rotational angle calculator calculating a rotational angle based on the synthesized cosine and sine signal amplitudes; and a PWM controller. | 2009-04-02 |
20090085509 | STEPPER MOTOR DEVICE WITH COMPENSATING NON-SINUSOIDAL DRIVING VALUES AND METHOD OF PRODUCING THE DRIVING VALUES - A stepper motor device uses compensating non-sinusoidal driving values to compensate for operational non-sinusoidal drive characteristics of a motor of the device due to at least design and manufacturing imperfections in the motor. The compensating non-sinusoidal driving values may be derived using back electromagnetic force produced from the motor or using measured rotational positions of the motor when the motor is driven using known driving values. | 2009-04-02 |
20090085510 | Motor Drive Using Flux Adjustment to Control Power Factor - The switching rectifier and switching inverter on a motor drive unit are modulated to indirectly change the magnitude of current and voltage stored in DC link by controlling the magnetic field of the motor to correct for both power factor lead and power factor lag over a wide range of motor speeds and conditions while maintaining a predetermined motor operating point. | 2009-04-02 |
20090085511 | High Temperature Superconducting Electromechanical System With Frequency Controlled Commutation For Rotor Excitation - A system and method for generating a magnetic field in a rotating machine. In one embodiment, a primary winding assembly is configured to generate a rotatable magnetic field. The assembly is connected to receive multiple signals of different phases to effect field rotation. A set of secondary windings is positioned for generation of current based on magnetic coupling during the field rotation. The secondary windings include conductor capable of supporting superconducting current flow. A rotatable machine includes a stator and a rotor winding coupled for rotation with respect to the stator. The secondary windings are formed in a circuit for providing superconducting current through the rotor winding. | 2009-04-02 |
20090085512 | APPARATUS FOR CHARGING A BATTERY OF A PORTABLE ELECTRONIC DEVICE - A power source ( | 2009-04-02 |
20090085513 | Portable Electronic Device - A portable electronic device comprises a main body, a lens module and a solar panel. The main body comprises a battery pack and a photosensitive element. The lens module is connected with the main body. The solar panel is disposed between the photosensitive element and the lens module, and the solar panel is electrically connected with the battery pack. The solar panel is able to receive the light focused by the lens module and convert the light into electricity to supply to the battery pack. | 2009-04-02 |
20090085514 | BATTERY CHARGER - The problem of the present invention is to configure a battery charger such that water intruded into a gap between a plugging portion of a battery connection part in the battery charger and a battery pack does not contact the circuit substrate, with a simple and low-cost configuration, and improving recyclability of the circuit substrate. The battery charger is configured such that water intruded from the gap between the plugging portion of the battery connection portion and the battery pack, is guided through a through-hole of a protruded portion provided at the bottom of the plugging portion to the lower side of the circuit substrate provided on the bottom case. | 2009-04-02 |
20090085515 | CIRCUIT ARRANGEMENT WITH MULTIPLE BATTERIES - Disclosed is a circuit arrangement. The circuit arrangement includes a plurality of rechargeable batteries each having at least one rechargeable electrochemical cell, and current-carrying members connecting the plurality of batteries such that when the plurality of batteries are charging the plurality of batteries are in a series electrical circuit arrangement and when the plurality of batteries are discharging the plurality of batteries are in a parallel electrical circuit arrangement. | 2009-04-02 |
20090085516 | Automotive Power Supply System - An automotive power supply system comprises a battery module that includes serially connected battery groups each constituted with serially connected battery cells, integrated circuits each disposed in correspondence to one of the battery groups, a control circuit, a transmission path through which the integrated circuits are connected to the control circuit and a relay circuit via which an electrical current is supplied from the battery module. In response to a start signal instructing an operation start and received via the transmission path, each integrated circuit measures terminal voltages at the individual battery cells in the corresponding battery group and executes an abnormality diagnosis. If abnormality diagnosis results provided by the integrated circuits indicate no abnormality, the control circuit closes the relay, enabling supply of electrical current from the battery module and subsequently, the control circuit receives measurement results from the integrated circuits via the transmission path. | 2009-04-02 |
20090085517 | Method and apparatus of charge management for battery in mobile terminal - The present invention provides a charge management method for a battery in a mobile terminal having the steps of: setting an initial charge start point; setting a statistic analysis interval for gathering the remaining capacity of the battery at time of start and creating a statistic array for recording the remaining capacity of the battery upon each power-on operation in the statistic analysis interval; reading current remaining capacity of the battery and storing it sequentially in the statistic array; calculating a new charge start point based on a predetermined adaptive algorithm; and updating the initial charge start point with the new charge start point. The present invention also provides a charge management apparatus for a battery in a mobile terminal. With the present invention, it is possible to set an optimal charge start point through measurements, and thus lengthen the battery's lifetime. Especially for users who rarely use a battery to supply power, the battery's lifetime can be considerably extended in a smart way, and the safety of use of battery is improved. | 2009-04-02 |
20090085518 | Protective circuit board and battery pack using the same - A protective circuit board and a battery pack using the same, which includes a groove formed at one side and receives an external connection terminal in the groove, is provided. The protective circuit board for a battery, which is formed by mounting a number of electrical devices on a board on which a wiring pattern is formed and which is connected to a bare cell so as to protect a battery, comprises a groove formed on a surface of the protective circuit board, and an external connection terminal formed inside the groove. | 2009-04-02 |
20090085519 | Protection circuit for battery pack, battery pack including the protection circuit, and method of operating the battery pack - A protection circuit controls charging/discharging of a battery pack in both a high temperature region and a low temperature region. The battery pack is protected from the risk of firing, burning or explosion which occurs in a high temperature region, to secure its safety. Furthermore, the charging and discharging of the battery pack is controlled in a low temperature region, to prevent incomplete charging and to increase the battery capacity efficiency. | 2009-04-02 |
20090085520 | STATE OF CHARGE OPTIMIZING DEVICE AND ASSEMBLED BATTERY SYSTEM INCLUDING SAME - A state of charge optimizing device according to the present invention optimizes a state of charge of each of a plurality of cells which are connected in series to form an assembled battery, and conducts the optimization by discharging or charging a part or all of the plurality of cells so that the differences between the amount of charge after the optimization and the amount of charge in a predetermined state of charge become uniform. | 2009-04-02 |
20090085521 | SAFETY CIRCUIT AND BATTERY PACK USING THE SAME - A safety circuit includes a thermal fuse electrically connected in a main current path so that an electric current flowing in the main current path flows through the thermal fuse; a switching element electrically connected to the thermal fuse to cause the thermal fuse to open and interrupt the electric current flowing in the main current path when the switching element is turned on; a microcontroller electrically connected to the switching element and the main current path to turn on the switching element when an overcurrent flows in the main current path; and a noise removing unit electrically connecting the microcontroller to the switching element. | 2009-04-02 |
20090085522 | CHARGING SYSTEM - A charging system and method is capable of starting or stopping charging a battery of a vehicle at a convenient time. A portable device and a vehicle unit can communicate with each other. A user is determined to be away from the vehicle based on a result of communication between the portable device and the vehicle unit. A charging ECU starts charging a battery when the user is away from the vehicle. Charging of the battery can be started when the user is assumed to have stopped using the vehicle and will not use the vehicle for a period of time. When the user is determined to be close to the vehicle it is assumed that use of the vehicle will be resumed at which point the system instructs the charging of the battery to be stopped. The system thereby allows the vehicle to be ready for use. | 2009-04-02 |
20090085523 | ADAPTIVE BATTERY HOLDER, BATTERY RECHARGING SYSTEM INCLUDING THE SAME, AND BATTERY RECHARGING METHOD USING THE SAME - An adaptive battery holder, a battery recharging system, and a battery charging method are provided. The battery recharging condition is set according to the type of externally connected device connected to the battery holder, so that the battery can be rapidly and optimally recharged and the externally connected device can be stably operated. | 2009-04-02 |
20090085524 | BATTERY CHARGING CIRCUIT - A circuit charges and maintains a battery. The circuit includes a microprocessor for receiving a current sense signal and a voltage sense signal. The microprocessor generates control signals for selectively operating the circuit in a charging mode and in a maintenance mode. The circuit includes a current sense circuit for measuring the battery's current consumption and generating the current sense signal responsive to the measured current consumption. The circuit includes a voltage sense circuit for measuring the battery's voltage and generating the voltage sense signal responsive to the measured battery voltage. The circuit includes a waveform generator circuit for receiving the control signals, and operating in response thereto to apply a charging signal to the battery when in the charging mode and to deactivate the charging signal when in the maintenance mode. The charging signal has an oscillating triangular waveform superimposed on a DC bias signal. | 2009-04-02 |
20090085525 | METHOD FOR CHARGING BATTERY - A method for charging a battery includes measuring the battery's voltage and comparing the battery voltage to a first threshold voltage. The method includes operating the battery in a charging mode if the measured battery voltage is less than the first threshold voltage, wherein operating in the charging mode comprises applying a charging signal to the battery. The charging signal has an oscillating triangular waveform superimposed on a DC bias signal. The method includes measuring the battery's current consumption and comparing the current consumption to a first threshold current. The method includes operating in a maintenance mode if the battery's current consumption is less than the first threshold current, wherein operating in the maintenance mode comprises terminating application of the charging signal to the battery. The method includes measuring, during operation in the maintenance mode, the battery's voltage and comparing the measured voltage to a second threshold voltage. The method includes applying the oscillating triangular waveform superimposed on the DC bias signal until the battery's voltage is equal to or greater than the second threshold voltage. | 2009-04-02 |
20090085526 | CIRCUIT FOR GENERATING TRIANGULAR WAVEFORM HAVING RELATIVELY SHORT LINEAR RISE TIME AND SUBSTANTIALLY LONG LINEAR FALL TIME - A circuit includes a pulse transformer having primary and secondary windings. An oscillating waveform is applied to the primary winding to induce an oscillating waveform at the secondary winding. A transistor in series with a first resistor is coupled between the secondary winding and the ground. An R-C network formed by a second and a third resistor and a capacitor is coupled to a base junction of the transistor. The R-C network causes a slow, tapered linear pinch off of the transistor's conductance to enable the circuit to output a triangular waveform, which is characterized by a relatively short linear rise time followed by a substantially long linear fall time. The R-C network is coupled to the secondary winding via a first and a second diode, respectively. | 2009-04-02 |
20090085527 | SURFACE TEMPERATURE DEPENDENT BATTERY CELL CHARGING SYSTEM - A charging system capable of charging a battery cell so that the surface temperature of the battery cell does not exceed an upper temperature limit, is provided. A battery charger is configured in a manner such that a setting current is variable during charging. The battery charger starts charging of a secondary battery with a setting voltage set to a minimum charging current value. The surface temperature of the secondary battery is measured during charging. An estimated temperature value is calculated which is a surface temperature of the secondary battery, at which the secondary battery is charged up until a charging amount corresponding to the maximum surface temperature under assumption that the charging is performed with a present charging current value. The setting current is increased when the estimated temperature value is lower than the target temperature range and is reduced when the estimated temperature value is higher than the target temperature range. When the estimated temperature value belongs to the target temperature range, a present setting current is maintained. | 2009-04-02 |
20090085528 | CHARGING CIRCUIT AND ITS CHARGE METHOD - A charging circuit and a charging method by the charging circuit that allow a stable charging operation are provided. The charging method of charging a battery from a charging power supply according to a constant current constant voltage charging system includes the steps of increasing a charging current for each predetermined current level step by step at a time of constant current charging, thereby performing the constant current charging, and stopping the increase of the charging current and continuing the charging maintaining a predetermined minimum chargeable voltage determined by the battery in advance, when it is detected that a supply voltage from the charging power supply has assumed the predetermined minimum chargeable voltage. | 2009-04-02 |