Patents Issued in October 25, 2007
  • Publication number: 20070247841
    Abstract: A light emitting device comprises: a light emitting element; a plurality of lead frames to which the light emitting element is electrically connected; and a package that includes in its interior at least part of said lead frames which protrude outward at one end, that is equipped with an opening for taking off light from the light emitting element, and that extends in the lengthwise direction, wherein a concave portion is formed in the outer surface of at least part of the package wall, the lead frames protruding outward from the package are accommodated in this concave portion, and the walls that constitute said opening and are across from each other in the widthwise direction of the package comprise at least a first wall that is across from the light emitting element, a second wall that is raised up by a step from the first wall, and a third wall that links the first wall and the second wall, and the second wall and third wall are formed thicker than the first wall.
    Type: Application
    Filed: February 23, 2007
    Publication date: October 25, 2007
    Applicant: NICHIA CORPORATION
    Inventors: Hiroshi Kono, Masashi Ishida, Saiki Yamamoto
  • Publication number: 20070247842
    Abstract: A light fixture using LEDs includes a lower skin layer possessing heat transfer properties. A circuit board is affixed to the lower skin layer, and a single LED, or a plurality of LEDs, is electrically connected to the circuit board. The single LED, or plurality of LEDs, when electrically activated, emits light through substantially around a vertical axis. The light fixture also includes a core possessing heat transfer properties that is in thermal contact with the LED and has an interior cavity for the LED. The core is affixed to the lower skin layer, and an upper skin layer, containing a window or windows over the LED or LEDs, is affixed to the core. The LEDs may be white, infrared, ultraviolet, and/or colored and may be mounted on a printed circuit board or individually.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 25, 2007
    Applicant: INTEGRATED ILLUMINATION SYSTEMS
    Inventors: Thomas L. Zampini, Thomas L. Zampini, Mark A. Zampini
  • Publication number: 20070247843
    Abstract: A surface supported area lighting media assembly device comprises an illumination device to provide light of selected colors including white light by means of a chemiluminescent light emitting element or an LED light emitting assembly element and a reusable support element. The support element is configured for insertion into a support surface in a desired support orientation surface and includes a surface insertion spike and a stick receiving portion. The chemiluminescent element or LED element and the support element releasably engage one another to support the chemiluminescent element or LED element in the desired orientation when the support element is inserted into the support surface. The chemiluminescent element or LED element can be disengaged from the support element for replacing the chemiluminescent element or the LED element.
    Type: Application
    Filed: February 1, 2007
    Publication date: October 25, 2007
    Applicant: CHEMICAL LIGHT, INC.
    Inventors: Michael L. Schrimmer, Ronald E. Gilley
  • Publication number: 20070247844
    Abstract: An LED inspection lamp has plurality of LED sources for emitting electromagnetic radiation at different peak wavelengths for causing visible fluorescence in different leak detection dyes. A lens is associated with each LED. Radiation passing through lenses is superimposed in target area at target distance. Another LED inspection lamp has plurality of LEDs emitting electromagnetic radiation at a peak wavelength. A lens adaptor has lens housing for attachment to LED inspection lamp with a single LED for causing visible fluorescence, and a lens. Substantially all of the radiation from the LED passes through the lens and is focused in a target area at a target distance from the lenses. LED spot lights have a similar configuration. The LEDs may produce white light from distinct LEDs or from white LEDs. The light may be a flashlight or fixed spot light.
    Type: Application
    Filed: April 3, 2007
    Publication date: October 25, 2007
    Applicants: R.J. DORAN & CO LTD., BRASSCORP LIMITED
    Inventors: Jack Brass, Richard Doran, Donald Klipstein, Thomas Lemons, Bjarki Hallgrimson, Sarah Dobbin
  • Publication number: 20070247845
    Abstract: The invention relates to a lighting assembly (10) comprising a housing (12), with one or more openings (26, 28, 30). A lighting means (40) is arranged in this housing emitting radiation through the openings (26, 28, 30) in angular ranges. Means (72) for shielding said radiation from a distant observer are provided. The invention comprises a first transparent cover (32; 72) for covering the openings of the housing. The cover has a micro structure profile (102) to shield unwanted radiation from selected portions of the angular ranges. A second transparent cover (70) protects the micro structure profile of the first cover.
    Type: Application
    Filed: April 23, 2007
    Publication date: October 25, 2007
    Applicant: Semperlux Aktiengesellschaft
    Inventor: Udo Bansbach
  • Publication number: 20070247846
    Abstract: An illumination system is provided, comprising: two lamps (10) generating white light; an integrator rod (30) having an axis (31) disposed between the two lamps (10) for receiving the white light from the two lamps (10) at an input end (32) and directing the white light out of an output end (34) opposite the input end (32); and two mirrors (20) proximate the input end (32) of the integrator rod (30) and angled toward the respective lamps (10) to reflect the white light from the two lamps (10) into the input end of the integrator rod (30).
    Type: Application
    Filed: July 7, 2004
    Publication date: October 25, 2007
    Inventor: Estill Hall
  • Publication number: 20070247847
    Abstract: Lighting packages are described for light emitting diode (LED) lighting solutions having a wide variety of applications which seek to balance criteria such as heat dissipation, brightness, and color uniformity. The present approach includes a backing of thermally conductive material and two or more arrays of LEDs attached to a printed circuit board (PCB). The PCB is attached to the top surface of the backing and the two or more arrays of LEDs are separated by a selected distance to balance heat dissipation and color uniformity of the LEDs.
    Type: Application
    Filed: April 21, 2006
    Publication date: October 25, 2007
    Inventor: Russell Villard
  • Publication number: 20070247848
    Abstract: An sundial apparatus and method is described, the sundial apparatus including at least one light-emitting-diode bulb.
    Type: Application
    Filed: April 19, 2006
    Publication date: October 25, 2007
    Applicant: Cooper Technologies Company
    Inventors: Brent Duwe, Kenneth Ramsey, George Drake
  • Publication number: 20070247849
    Abstract: A light source device includes a discharge tube, a reflector for reflecting a light radiated from the discharge tube, and support members for supporting the discharge tube to the reflector. The support member or the discharge tube is formed of a heat insulating structure so as to prevent a temperature drop of a portion of the discharge tube near electrodes thereof. By this arrangement, it is possible to prolong the operational life of the discharge tube.
    Type: Application
    Filed: June 12, 2007
    Publication date: October 25, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Akio Sotokawa, Seiji Hachisuka
  • Publication number: 20070247850
    Abstract: A lighting fixture comprising for use in an environment which requires protection from EMI/RFI emissions. The fixture comprises a body forming a light-emitting opening, lighting components including at least one lamp in the body, a lens covering the opening, and a conductive grid across the opening, the grid being separate from the lens, electrically connected to the body, and positioned between the lighting components and the opening. The grid is a conductive screen which covers the entire opening between the component area of the fixture and the light-emitting opening area of the fixture, thereby encasing the lamps in metal which prevents EMI and RFI from escaping outside the fixture.
    Type: Application
    Filed: March 27, 2007
    Publication date: October 25, 2007
    Applicant: KENALL MANUFACTURING CO.
    Inventors: James Hawkins, Glenn Gorsiski
  • Publication number: 20070247851
    Abstract: Improved lighting packages are described for light emitting diode (LED) lighting solutions having a wide variety of applications which seek to balance criteria such as heat dissipation, brightness, and color uniformity. The present approach includes a backing of thermally conductive material. The backing includes a cell structure. The cell structure comprises a plurality of hollow cells contiguously positioned in a side by side manner. The present approach also includes an array of LEDs. The array of LEDs is mounted to a printed circuit board (PCB). The PCB is attached to the cell structure to balance heat dissipation and color uniformity of the LEDs.
    Type: Application
    Filed: April 21, 2006
    Publication date: October 25, 2007
    Inventor: Russel Villard
  • Publication number: 20070247852
    Abstract: A multi chip LED lamp comprises a reflector and a plurality of LED chips mounted on a top surface of the reflector. A triple laminate board has a board layer; a circuit layer formed on the board layer; and a thermal conductor layer laminated under the board layer. A well is formed in the triple laminate board, the well sized to receive the reflector in snug fit. The multi chip LED circuit layer can be copper and the thermal conductor layer can be aluminum. A heat sink having fins can be attached to the thermal conductor layer. Material can be removed from the triple laminate board to form the well and reflector. Three or more LED chips can be mounted on the top surface of the reflector. The chips can be less than 2 mm from each other.
    Type: Application
    Filed: April 21, 2006
    Publication date: October 25, 2007
    Inventor: Xiaoping Wang
  • Publication number: 20070247853
    Abstract: The invention relates to a thermal management system for a lamp. The system comprises a lamp socket that comprises a socket body. The thermal assembly is in thermal communication with the socket body to form a thermal circuit between the lamp and the thermal assembly for dissipating heat generated by the lamp.
    Type: Application
    Filed: April 25, 2006
    Publication date: October 25, 2007
    Inventor: Michael Dorogi
  • Publication number: 20070247854
    Abstract: A ceiling fan includes a mounting unit for fastening to a ceiling, a power unit, which has a motor fastened to the mounting unit and a fan member coupled to and rotatable by the motor, and a shade, which is fastened to the mounting unit to accommodate therein the power unit so as to kept the power unit from sight. The shade has a plurality of slots for guiding air flow induced by the fan member out of the shade.
    Type: Application
    Filed: July 19, 2006
    Publication date: October 25, 2007
    Inventor: Chao-Pao Lin
  • Publication number: 20070247855
    Abstract: A light emitting apparatus 11 comprises: an aluminum nitride co-fired substrate 13; at least one light emitting device 15 mounted on a front surface of the co-fired substrate 13 through a flip-tip method; and a reflector 16 having an inclined surface 14 for reflecting a light emitted from the light emitting device 15 to a front side direction, the reflector 16 is bonded to a surface of the aluminum nitride co-fired substrate 13 so as to surround a circumference of the light emitting device 15. This configuration can simplify the process of manufacturing the apparatus and can provide light emitting apparatus that are excellent in heat radiation performance, allow a larger current to pass therethrough, and can have a significantly increased luminance with a high luminous efficiency.
    Type: Application
    Filed: September 30, 2005
    Publication date: October 25, 2007
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventor: Keiichi Yano
  • Publication number: 20070247856
    Abstract: A lighting unit that includes a light source and a reflector assembly upon which the light source is mounted. The reflector assembly includes a first reflector having a first curved reflective surface extending away from the light source, and a second reflector having a second curved reflective surface extending away from the light source. The first curved reflective surface faces and opposes the second curved reflective surface. The first curved reflective surface has a curvature that is different from that of the second curved reflective surface. The first and second curved reflective surfaces both preferably terminate in convexities that reduce the size of dark band areas of illumination.
    Type: Application
    Filed: April 4, 2007
    Publication date: October 25, 2007
    Inventors: Shih Wang, Bok Lau, Feng Wu, Chin-Wang Tu, Chen-Ho Wu
  • Publication number: 20070247857
    Abstract: An apparatus for scanning a document comprises a platen for supporting at least a portion of the document; a light source; and an optical element for directing light from the light source to the platen. The optical element defines a plurality of small planar surfaces, the small planar surfaces being arranged in a linear array. Light emanating from a source is reflected from one of the small planar surfaces and emerges substantially perpendicular to an exit surface.
    Type: Application
    Filed: April 21, 2006
    Publication date: October 25, 2007
    Inventors: Robert Herloski, Jagdish Tandon, Douglas Proctor, Eric Dudley
  • Publication number: 20070247858
    Abstract: A mounting support for mounting an object, such as a light, flashlight or the like, to a mounting surface is disclosed. The support comprises a body to which may be coupled the object, at least two legs projecting from the body, the legs comprising opposed divergently arcuate inner surfaces each providing at least one abutment point for abutting the legs upon the mounting surface, and a fastener for maintaining the abutment. The object or light may be integrally, fixedly, pivotally or otherwise coupled to the body.
    Type: Application
    Filed: April 20, 2007
    Publication date: October 25, 2007
    Inventor: TIMOTHY FORD
  • Publication number: 20070247859
    Abstract: A retro-fit lighting system includes a pole having a base plate at one end, the pole is disposed in a substantially upright orientation, a base cover disposed over the base plate and around the pole, at least one spacer positioned along the pole, a sleeve disposed over the pole, above said base cover and engaged by the at least one spacer, the sleeve having a length at least about half the length of the pole.
    Type: Application
    Filed: June 26, 2006
    Publication date: October 25, 2007
    Applicant: Genlyte Thomas Group LLC
    Inventors: Eric O.M. Haddad, Donald Fentress
  • Publication number: 20070247860
    Abstract: A pivotable light pole apparatus comprising a first and a second pole section, a portion of the first pole section being fittable within a portion of the second pole section, with one end of each pole section being pivotably connected to each other by a pin. The apparatus further comprises a slidable cover which fits over both pole sections and locks in place when the pole sections are collinear so that the pole sections form a single pole, yet when the cover is retracted over the second pole section the first pole section can be pivoted by a technician to be generally perpendicular to the first pole section. When in the pivoted position a light fixture mounted to the first pole section is brought closer to the technician for easier inspection or repair.
    Type: Application
    Filed: April 20, 2007
    Publication date: October 25, 2007
    Inventors: ROBERT LEE FRANKLIN, William R. Cole
  • Publication number: 20070247861
    Abstract: An overhead storage bin comprises a storage bin bezel, a door movable in relation to the storage bin bezel between a closed position and an opened position, a storage compartment accessible by a vehicle passenger when the door is in the opened position, and a lamp carried by the storage bin bezel, the lamp being focused to the storage compartment when the door is in the open position.
    Type: Application
    Filed: June 14, 2007
    Publication date: October 25, 2007
    Inventors: John Tiesler, Chris Pattitoni
  • Publication number: 20070247862
    Abstract: A lighting or signalling device in which a particular output unit of the device in question is formed, the output unit consisting of a stack of screens, independent of one another; each screen comprises a plurality of optical patterns produced in its thickness, able to divert light signals emitted by a light source; the spread of the light beam emerging from the device in question is thus adjustable in a first diffusion direction (OX), corresponding, for each screen in question, to a direction parallel to a plane defined by the screen and containing the optical patterns, and in a second diffusion direction (OZ), corresponding to a direction parallel to a plane roughly perpendicular to the planes defined by the screens, the spread on the second diffusion plane depending on the relative positions of the various screens. In this way in particular a “block of illuminated material” effect is obtained.
    Type: Application
    Filed: April 23, 2007
    Publication date: October 25, 2007
    Applicant: VALEO VISION
    Inventors: Alcina TANGHE, Jean-Claude GASQUET, Benjamin THIERRY
  • Publication number: 20070247863
    Abstract: A projector-type vehicle lamp comprises a reflector, a light source and a lens. The reflector, which makes the light source produce a desired light pattern without using any shade interposed between the reflector and the lens, has a free curved surface and is designed with a multi-ellipsoid equation. In addition, the projector-type vehicle headlamp system also produces an optimum utilizing rate with its high gradient of illumination.
    Type: Application
    Filed: April 20, 2006
    Publication date: October 25, 2007
    Inventor: Yuan-Chang Liou
  • Publication number: 20070247864
    Abstract: A vehicle leadlight includes a light source, a reflector, a projector lens, and a shade member. The shade member includes a first plate member and a second plate member. The first plate member has an edge that is shaped to increase amounts of light around cut-off lines of a light distribution pattern. The second plate member is bent to have the substantially similar shape to a meridional image surface of the projector lens. The second plate member has an edge that is shaped to create the cut-off lines of the light distribution pattern.
    Type: Application
    Filed: April 2, 2007
    Publication date: October 25, 2007
    Inventor: Eiji Suzuki
  • Publication number: 20070247865
    Abstract: A lamp unit 18 is provided with a reflecting face 25b for an overhead sign and a light receiving face 28 for the overhead sign. The reflecting face 25b for an overhead sign reflects light from a light source 23a and is provided on an upper side of the light source 23a and rearward from a rear side focal point F of a projector lens 11. The light receiving face 28 for the overhead sign is provided on a front side of a movable shade 30 arranged between the projector lens 11 and the light source 23a. The light receiving face 28 forms overhead sign irradiating light P2 by reflecting light from the reflecting face 25b for the overhead sign to the projector lens 11. Illuminance reducer for reducing a portion of irradiating light is provided at a position of a vicinity of an upper end of the movable shade 30 of the light receiving face 28a for the overhead sign.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 25, 2007
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Masao Kinoshita, Akinori Matsumoto, Takehiko Tajima
  • Publication number: 20070247866
    Abstract: This casing (1) comprises a hollow body in which various housings are arranged suitable for receiving items of equipment of the motorcycle, in particular a front headlight insert (38) and/or a display (42) and/or turn signal lamps (44), first means (28) for attaching the hollow body (2) to a first location of the motorcycle front fork, and second means (30, 34, 36) for attaching the hollow body to a second location of the motorcycle front fork.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 25, 2007
    Applicant: ENGINEERING AND MORE
    Inventor: Joel Leon Robert Domergue
  • Publication number: 20070247867
    Abstract: A compact, lightweight, portable light source unit for an instrument used to visualize an interior of a hollow cavity is provided. The unit includes a housing having a connection means for removably coupling the unit to a light input post or the like of the instrument and a light emitting diode (LED) powered by at least one battery mounted within the housing. The unit also includes means for controlling or dissipating heat generated by operation of the LED.
    Type: Application
    Filed: April 21, 2006
    Publication date: October 25, 2007
    Applicant: Sunoptic Technologies LLC
    Inventors: James Hunter, Johannes Blum, Eric VanDenhende
  • Publication number: 20070247868
    Abstract: A light string, which can be used for decorative purposes during holidays, is provided. In one embodiment, the light string includes a plurality of input terminals adapted to receive power from a voltage source; a plurality of light assemblies, wherein at least one of the plurality of light assemblies is electrically connected to at least one of the plurality of input terminals, each light assembly including at least two lights electrically connected in series; and at least one bidirectional voltage regulator diode, wherein the combination of the at least one bidirectional voltage regulator diode is connected in parallel to the at least two series connected lights and functions as an electrical shunt for the at least two lights.
    Type: Application
    Filed: April 20, 2006
    Publication date: October 25, 2007
    Inventor: Zhaoyuan Li
  • Publication number: 20070247869
    Abstract: In a method of assembling a surface illumination system having an electromagnetic radiation emitting front side, at least one primary radiation source suitable for emitting electromagnetic radiation when operating is disposed on at least one mounting area of a flexible carrier. The flexible carrier has a front side and a back side opposite said front side, the front side of the flexible carrier defines a reference plane. The mounting area of the flexible carrier on which the primary radiation source is disposed is then bent out of the reference plane such that an optical axis of the primary radiation source extends parallel or obliquely to the reference plane.
    Type: Application
    Filed: May 12, 2005
    Publication date: October 25, 2007
    Applicant: OSRAM OPTO SEMICONDUCTORS GMBH
    Inventors: Kurt-Jurgen Lang, Hubert Ott, Ludwig Plotz, Christian Poh, Mario Wanninger
  • Publication number: 20070247870
    Abstract: A surface light-source device (50) includes: a plurality of point light sources (2); a light-guide plate (4) arranged for emitting from its emitting surface the light incident on one lateral side thereof from the point light sources (2); a lower case (10) having a lateral side formed approximately in parallel to the incident surface of the light-guide plate (4); and a light-source substrate (3) on which the plurality of point light sources (2) are arranged at predetermined intervals, disposed on the light-guide plate (4) side; wherein the surface light-source device (50) is provided with a substrate holder (8) that clamps the light-source substrate (3) and the lateral side of the lower case (10) by projections arranged on the substrate holder (8) between adjacent two of the light sources (2).
    Type: Application
    Filed: April 4, 2007
    Publication date: October 25, 2007
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Seiji SAKAI, Takuya Sakamoto
  • Publication number: 20070247871
    Abstract: A backlight unit for a liquid crystal device capable of obtaining a high-quality image and reduced in thinness. The backlight unit is disposed below a liquid crystal panel to irradiate light thereoto. A plurality of separate light guide plates define respective blocks. Groups of LEDs each are disposed along an edge of each of the light guiding plates, each of the LED groups emitting light toward a corresponding one of the light guide plates. The each LED group is turned on and off according to the corresponding block.
    Type: Application
    Filed: April 11, 2007
    Publication date: October 25, 2007
    Inventor: Chul Hee Yoo
  • Publication number: 20070247872
    Abstract: A backlight unit for increasing the amount of vertical output light, and a displaying apparatus employing the same. The backlight unit includes: a light source; a first collimating unit which collimates light incident from the light source to a first direction and which outputs the collimated light; and a second collimating unit which collimates the light output from the first collimating unit to a second direction that is different from the first direction and which outputs the collimated light, wherein the light from the light source is sequentially collimated to the first and second directions and out the collimated light is output.
    Type: Application
    Filed: September 25, 2006
    Publication date: October 25, 2007
    Inventors: Moon-gyu Lee, Jee-hong Min
  • Publication number: 20070247873
    Abstract: A system for illuminating panels such as advertising display panels is provided. Such illuminated panels include at least one row of point light sources located substantially within the at least one illuminated frame member, a diffusion layer have a diffusion edge facing the at least one row of point light sources, a backscattering layer coupled to a back surface of the diffusion layer, and a dispersion layer coupled to a front surface of the diffusion layer. The diffusion layer has an edge with a surface roughness configured to diffuse light emitted by the at least one row of point light sources. In some embodiments, the light sources are dimmable Luxeon LEDs and can be activated by an infrared sensor. It is also possible to use ultraviolet to blue light sources for the panel and to include a phosphor in the dispersion layer of the panel for converting the ultraviolet to blue light into visible light.
    Type: Application
    Filed: October 17, 2006
    Publication date: October 25, 2007
    Inventors: George Awai, Michael Ernst
  • Publication number: 20070247874
    Abstract: A lamp bulb assembly having a light bulb unit and a socket is provided. The light bulb unit includes a light bulb holder and a light bulb. The light bulb holder includes a male fastening member. The male fastening member is made of one or more U-shaped tongues, each with an engaging element. The socket further includes a plurality of conductive leads, a body, and a female fastening member for receiving the male fastening member. The U-shaped tongue of the light bulb unit is inserted in a hollow recess of the socket. The U-shaped tongue allows for the bending inward to disconnect the engaging element from the hollow recess for easy separation of the light bulb unit from the socket. The U-shaped tongue allows for using the naked fingers for separation during changing of the light bulbs without requiring the use of any tools.
    Type: Application
    Filed: April 21, 2006
    Publication date: October 25, 2007
    Inventor: Shi-Jun Yang
  • Publication number: 20070247875
    Abstract: The present invention relates to a multiple-output voltage converter. A basic idea of the present invention is to provide a multiple-output converter which may be adapted to various output power conditions. The converter has, in an exemplifying embodiment, three outputs which all share a common tapped inductor (301, 302). An inductor tap is employed to control the inductance of the inductor. A large inductance is used for low power standby operation and a small inductance is used when, for example, the LED backlight is switched on. Switches are arranged at the converter outputs to select to which one of the respective converter outputs the energy of the inductor is to be transferred.
    Type: Application
    Filed: May 25, 2005
    Publication date: October 25, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Bernd Ackermann, Henricus Derckx, Wilhelmus Van Lier, Miguel Rubio, Eberhard Waffenschmidt
  • Publication number: 20070247876
    Abstract: An inverter operable to supply high power factor electrical power to an AC load including an AC power grid includes a DC bus and a DC to AC converter section of the full bridge type. The inverter further includes a voltage sensor configured to produce an instantaneous output voltage signal representing instantaneous output voltage of the inverter, a rectification circuit configured to produce a rectified output voltage signal, a power signal generator, an output current sensor configured for sensing an output current of the inverter, a rectification circuit configured to produce the rectified output current signal, a sign circuit for producing a signal representing the sign of the output voltage and a control apparatus.
    Type: Application
    Filed: June 21, 2004
    Publication date: October 25, 2007
    Inventor: Djordje Garabandic
  • Publication number: 20070247877
    Abstract: Provided is a current-source push-pull DC-DC converter using an active clamp circuit for reusing energy of leakage inductances by not only diodes on a secondary side of a transformer being zero-current switched using a series-resonant full-wave rectifier, but also the active clamp circuit on a primary side of the transformer, which provides a discharge path of the energy stored in the leakage inductances, increases power conversion efficiency even for a wide input voltage range and reduces a switch voltage stress as compared to a conventional current-source push-pull circuit by operating even for a duty ratio below 0.5 by flowing a current of an input inductor through capacitors of the active clamp circuit when both main switches are off.
    Type: Application
    Filed: August 24, 2006
    Publication date: October 25, 2007
    Applicants: POSTECH FOUNDATION, POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Bong Hwan KWON, Jung Min KWON
  • Publication number: 20070247878
    Abstract: This invention relates to low loss power supply system comprising a rectifying bridge 3 supplying current to a motor, wherein the rectifying bridge including two AC power feed inputs PA, PB as well as at least one output for supplying power to said motor M, and wherein an YD transformer 2 is coupled between said inputs, said YD transformer, comprising a star and delta winding, and being adapted to provide an approximately 30° phase shift relative to the chosen fundamental frequency between said inputs.
    Type: Application
    Filed: June 6, 2005
    Publication date: October 25, 2007
    Inventors: Svein Djuve, Egil Hystad
  • Publication number: 20070247879
    Abstract: A bleeding resistor is required to discharge EMI filter of the power converter for the safety purpose. In order to save power and reduce device count, the present invention further uses this bleeding resistor for both start-up and feedforward compensation. It includes an input terminal for connecting the bleeding resistor. A voltage divider is connected to the input terminal. A sample-and-hold circuit samples and holds a voltage signal from the voltage divider. After that, a low-pass filter is connected to the sample-and-hold circuit to generate an offset signal in accordance with the voltage signal. The offset signal is connected to a limit circuit to generate a limit signal that limits the switching current of the power converter.
    Type: Application
    Filed: April 19, 2006
    Publication date: October 25, 2007
    Inventor: Ta-yung Yang
  • Publication number: 20070247880
    Abstract: Provided is a full-bridge active clamp DC-DC converter for reducing power loss due to high-speed switching by primary switches that are zero-voltage switched by energy stored as a leakage inductance of a transformer when main switches are on or off using a full-bridge active clamp circuit, which can be used at capacity, e.g., more than 1 KW. The full-bridge active clamp DC-DC converter includes a primary circuit and a secondary circuit divided by a transformer, the primary circuit, which is a full-bridge active clamp circuit, comprising an input capacitor Cd, two main switches S1 and S2, two sub-switches S3 and S4, and a clamp capacitor Cc, and the secondary circuit, which is an output rectification circuit for rectifying an output voltage.
    Type: Application
    Filed: August 24, 2006
    Publication date: October 25, 2007
    Applicants: POSTECH FOUNDATION, POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Bong Hwan KWON, Jung Min KWON
  • Publication number: 20070247881
    Abstract: A power control apparatus and power control method that reduce harmonic noise produced when modulating a carrier wave frequency over predetermined cycles. A command value signal is generated for obtaining a desired output voltage, and a carrier wave is output. The frequency of the carrier wave is modulated by a desired frequency over predetermined cycles, and the desired frequency also modulates. The carrier wave is compared to a command value signal and a resulting control signal is provided to a switching unit. Harmonic noise caused by the modulation frequency can be spread, and the peak of the harmonic noise caused by the first modulation frequency can be reduced. Therefore, noise caused by a modulation frequency can be reduced.
    Type: Application
    Filed: April 23, 2007
    Publication date: October 25, 2007
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Yasuaki Hayami, Kentarou Shin, Kraisorn Throngnumchai
  • Publication number: 20070247882
    Abstract: A multi-output DC-DC converter that can optimize its cross-regulation performance is proposed, in which a nonlinear inductive element functioning as a leakage inductance of an output coupled inductor is placed on the output channel of at least one secondary circuit coupled to a secondary winding of a transformer. The inductance of the nonlinear inductive element is varied in inverse proportion with the variation of the current flowing through the nonlinear inductive element. When the load on an output end of the DC-DC converter is changed, the output channel having a higher load current is configured to produce a lower leakage inductance and the output channel having a lower load current is configured to produce a higher leakage inductance, and thereby balance the output currents flowing through the output channels of the DC-DC converter.
    Type: Application
    Filed: September 29, 2006
    Publication date: October 25, 2007
    Applicant: Delta Electronics, Inc.
    Inventors: Wei Chen, Zengyi Lu, Gangming Qiu
  • Publication number: 20070247883
    Abstract: A wireless charging system with a feedback loop which includes on the supply side a high-frequency generator, whose input is connected to the controlling output of a controller, and whose output is connected to the first input of a modulator whose input is connected to an antenna and to the input of a decoder whose output is connected via an amplifier to the input of the controller, and the data output is connected to the second input of the modulator, and, on the side of the charging unit, another antenna connected to the output of the modulator and to the inputs of a decoder and an inverter, whose outputs are connected respectively to the data and energy inputs of the charge-discharge controller which is connected to a storage battery and/or to an supercapacitor unit, the data and the controlling outputs of the charge-discharge controller being connected respectively to the first input of the modulator and to the input of the generator, whose output is connected to the second input of the modulator, wherein
    Type: Application
    Filed: May 26, 2007
    Publication date: October 25, 2007
    Inventor: Oleg Belyanin
  • Publication number: 20070247884
    Abstract: A memory system according to one embodiment includes a plurality of content addressable word decoders, and memory cells associated with each of the word decoders. A memory system according to another embodiment includes a word decoder storing an identifier which is a subset of a memory address, the word decoder being responsive to a match of the identifier and an incoming subset of the memory address. A memory system according to yet another embodiment includes a word decoder having more than sixteen address line inputs. A memory system according to a further embodiment includes a word decoder array having fewer word decoders than combinations of memory addresses. Methods are also provided.
    Type: Application
    Filed: March 28, 2006
    Publication date: October 25, 2007
    Inventor: Roger Stewart
  • Publication number: 20070247885
    Abstract: An entry including multiple bits of unit cells each storing data bit is coupled to a match line. The match line is supplied with a charging current having a restricted current value smaller than a match line current flowing in a one-bit miss state in one entry, but larger than a match line current flowing in an all-bit match state in one entry. A precharge voltage level of a match line is restricted to a voltage level of half a power supply voltage or smaller. Power consumption in a search cycle of a content addressable memory can be reduced, and a search operation speed can be increased.
    Type: Application
    Filed: April 5, 2007
    Publication date: October 25, 2007
    Inventors: Naoya Watanabe, Isamu Hayashi, Teruhiko Amano, Fukashi Morishita, Kenji Yoshinaga, Mihoko Akiyama, Shinya Miyazaki, Masakazu Ishibashi, Katsumi Dosaka
  • Publication number: 20070247886
    Abstract: A memory includes a plurality of memory arrays. Each of the plurality of memory arrays includes a plurality of sub-arrays. A plurality of power supply conductors are provided over the memory for supplying power to the plurality of memory arrays. When accessing the memory to simultaneously read a plurality of bits from the memory, the sub-arrays are accessed so as to provide a relatively uniform current demand on the plurality of power supply conductors. In one embodiment, the accessed sub-arrays are organized so that sides, or edges, of each accessed sub-array are not adjacent to each other.
    Type: Application
    Filed: April 19, 2006
    Publication date: October 25, 2007
    Inventor: Andrew Russell
  • Publication number: 20070247887
    Abstract: A memory cell of a non-volatile memory device, comprises: a select transistor gate of a select transistor on a substrate, the select transistor gate comprising: a gate dielectric pattern; and a select gate on the gate dielectric pattern; first and second memory cell transistor gates of first and second memory cell transistors on the substrate at opposite sides of the select transistor, each of the first and second memory cell transistor gates comprising: a tunnel insulating layer pattern; a charge storage layer pattern on the tunnel insulating layer pattern; a blocking insulating layer pattern on the charge storage layer pattern; and a control gate on the blocking insulating layer pattern; first and second floating junction regions in the substrate between the select transistor gate and the first and second memory cell transistor gates respectively; and first and second drain regions in the substrate at sides of the first and second memory cell transistor gates respectively opposite the first and second float
    Type: Application
    Filed: December 5, 2006
    Publication date: October 25, 2007
    Inventor: Sung-Chul Park
  • Publication number: 20070247888
    Abstract: A non-volatile memory cell and method for reading it are disclosed. In one embodiment, the non-volatile memory cell includes a fuse with a first terminal coupled to a first power supply voltage terminal, and a second terminal, a first transistor having a first current electrode coupled to the second terminal of the programmable fuse, a second current electrode, and a control electrode, and a second transistor having a first current electrode connected to the first power supply voltage terminal, a control electrode coupled to the control electrode of the first transistor, and a second current electrode coupled to the control electrode. By applying a read signal to the control electrode of the first transistor, the state of the cell (blown or unblown) is read.
    Type: Application
    Filed: April 25, 2006
    Publication date: October 25, 2007
    Applicant: Freescale Semiconductor, Inc.
    Inventors: Andre Vilas Boas, Alfredo Olmos
  • Publication number: 20070247889
    Abstract: A semiconductor memory device is provided with plural memory cells, plural bit lines BL, each bit line being commonly connected to the plural memory cells that are arranged in the same row, plural word lines WL and plural plate lines CP, each word line and each plate line being commonly connected to the plural memory cells that are arranged in the same column, plural plate voltage supply lines CPS arranged in the column direction, and means for electrically connecting each of the plural plate voltage supply lines to each of the corresponding plural plate lines.
    Type: Application
    Filed: April 23, 2007
    Publication date: October 25, 2007
    Inventors: Takashi Miki, Yasuo Murakuki
  • Publication number: 20070247890
    Abstract: The scale of the devices in a diode array storage device, and their cost, are reduced by changing the semiconductor based diodes in the storage array to cold cathode, field emitter based devices. The field emitters and a field emitter array may be fabricated utilizing a topography-based lithographic technique.
    Type: Application
    Filed: February 15, 2007
    Publication date: October 25, 2007
    Inventor: Daniel Shepard