Patents Issued in August 28, 2014
  • Publication number: 20140239796
    Abstract: A capacitive discharge welding method is used to join firing tips, such as those made from various precious metals, to spark plug electrodes. In one embodiment, charged capacitors or other energy storage devices coupled to welding electrodes quickly release stored energy so that a peak weld power and maximum interface temperature is quickly established, followed by a rapid decline in weld power and interface temperature. The resulting capacitive discharge weld joint may include solidified molten material from both the firing tip and the electrode and possess a number of other desirable qualities.
    Type: Application
    Filed: February 14, 2014
    Publication date: August 28, 2014
    Applicant: FEDERAL-MOGUL IGNITION COMPANY
    Inventor: Frederick J. Quitmeyer
  • Publication number: 20140239797
    Abstract: A spark plug having a center electrode, a ground electrode, and a ground electrode side tip. The tip partially projects from a front end face and an inner circumference-side side surface of the ground electrode. The ground electrode has a center of the front end face. The center is located at a front end side in a direction of the axis with respect to a front end of the center electrode. L/X?1.28 is satisfied, where L (mm) represents a length of the ground electrode along a central axis of the ground electrode and X (mm) represents a projection length of the ground electrode relative to a metallic shell. 8.
    Type: Application
    Filed: December 6, 2012
    Publication date: August 28, 2014
    Inventor: Kenji Ban
  • Publication number: 20140239798
    Abstract: An ignition plug having enhanced seal performance, while suppressing deformation of a metallic shell thereof. The ignition plug includes a metallic shell having a crimp portion, a male screw portion, a seat portion, and a bent portion. The bent portion has a largest outer diameter (OD) portion, and first and second smallest OD portions, wherein 0.01?(L2+L3?L1)/(L2+L3)?0.3 is satisfied. L1 is distance between a point in the first smallest OD portion farthest from center axis and a point in the second smallest OD portion farthest from center axis, L2 is distance between the point in the first smallest OD portion farthest from center axis and a point in the largest OD portion farthest from center axis, and L3 is distance between the point in the second smallest OD portion farthest from center axis and the point in the largest OD portion farthest from center axis.
    Type: Application
    Filed: February 18, 2014
    Publication date: August 28, 2014
    Applicant: NGK Spark Plug Co., Ltd.
    Inventors: Yasushi Sakakura, Yuichi Matsunaga
  • Publication number: 20140239799
    Abstract: A flat emitter is disclosed. In an embodiment, the flat emitter includes an emitter surface, which upon application of a heating voltage, emits electrons; a first end area, which has a first support rod; and a second end area, which has a second support rod. At least one first support rod has a narrow section extending in a longitudinal direction and is bonded to the first end area or a second support rod, which has a narrow section extending in a longitudinal direction and is bonded to the second end area. A flat emitter of this kind is structurally simple and offers a high level of electron emission at the same time as a longer useful life.
    Type: Application
    Filed: February 12, 2014
    Publication date: August 28, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Jörg Freudenberger, Jens Fürst, Freddy Güthlein, Giovanni Laporta, Gunter Röhrich, Matthias Seufert
  • Publication number: 20140239800
    Abstract: Disclosed are a red light-emitting nitride material, a light-emitting part and a light-emitting device comprising the same. The General Formula of the light-emitting material is: Ma(Al,B)bSicNdOe:Eum, Rn, wherein M is at least one of the alkaline earth metal elements Mg, Ca, Sr, Ba and Zn; R is at least one of the rare earth elements Y, La, Ce, Gd and Lu; and 0.9?a<1.1, 0.9?b?1, 1?c?1.5, 2.5<d<5, 0<e<0.1, 0<m<0.05, 0<n<0.1 and 1<c/b<1.5. The light-emitting material can be effectively excited by a radiation light having a wavelength below 500 nm, and then emits a visible red light having a wide spectrum from 500 nm to 780 nm. The light-emitting material of the present disclosure has the characteristics of high light-emitting efficiency, good temperature properties and a wide half-width etc., and the material can be used alone or in combination with other light-emitting materials for making high performance light-emitting devices.
    Type: Application
    Filed: October 17, 2011
    Publication date: August 28, 2014
    Applicant: GRIREM ADVANCED MATERIALS CO., LTD
    Inventors: Yunsheng Hu, Tao He, Huaqiang He, Weidong Zhuang, Ronghui Liu, Yuanhong Liu, Nan Li
  • Publication number: 20140239801
    Abstract: A display module and a fabricating method of the display module are provided. The display module includes a transparent cover, a first protection film, and an organic light-emitting display (OLED) device. The OLED device is disposed between the transparent cover and the first protection film. An area of the OLED device is smaller than an area of the transparent cover and an area of the first protection film.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: HTC CORPORATION
    Inventors: Syuan-Ling Yang, Chih-Jen Hu
  • Publication number: 20140239802
    Abstract: An organic light emitting display device and a method of manufacturing an organic light emitting display device are disclosed. The organic light emitting display device includes a first substrate, on which a display region and a non-display region surrounding the display region are defined, a second substrate disposed opposite to the first substrate, an organic light emitting element disposed in the display region between the first substrate and the second substrate, a third substrate disposed opposite to the second substrate, and a microphone disposed between the second substrate and the third substrate.
    Type: Application
    Filed: October 1, 2013
    Publication date: August 28, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun-Jae LEE, Seong-Min WANG, Hee-Soo YOO
  • Publication number: 20140239803
    Abstract: The invention relates to a high-pressure discharge lamp having an ignition aid and comprising a discharge vessel, which is accommodated in an outer bulb. The ignition aid is a UV enhancer having a can-like container (12), which has an inner electrode (18). At least part of the end-face edge of the inner electrode at least comes close to the end face (24) of the container (12). An external electrode is attached to the outside of the container.
    Type: Application
    Filed: July 26, 2012
    Publication date: August 28, 2014
    Applicant: OSRAM GMBH
    Inventors: Johannes Buttstaedt, Uwe Fidler, Stefan Lichtenberg, Georg Rosenbauer
  • Publication number: 20140239804
    Abstract: Disclosed are devices and methods related to flat gas discharge tubes (GDTs). In some embodiments, a plurality of GDTs can be fabricated from an insulator plate having a first side and a second side, with the insulator plate defining a plurality of openings. Each opening can be covered by first and second electrodes on the first and second sides of the insulator plate to thereby define an enclosed gas volume configured for GDT operation. Various examples related to such GDTs, including electrode configurations, opening configurations, pre-ionization features, grouping of a GDT with another GDT or device, and packaging configurations, are disclosed.
    Type: Application
    Filed: February 21, 2014
    Publication date: August 28, 2014
    Inventors: John KELLY, Johan SCHLEIMANN-JENSEN, Jan HEATH, Craig Robert SHIPLEY, Gordon L. BOURNS
  • Publication number: 20140239805
    Abstract: An array of spatially separated beamlets is produced by a corresponding array of charged particle emitters. Each emitter is at an electrostatic potential difference with respect to an immediately adjacent emitter in the array. The beamlets are converged laterally to form an charged particle beam. The beam is modulated longitudinally with infrared radiation to form a modulated beam. The charged particles in the modulated beam are bunched longitudinally to form a bunched beam. The bunched beam may be modulated with an undulator to generate a coherent radiation output. This abstract is provided to comply with rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: KLA-Tencor Corporation
    Inventor: TOMAS PLETTNER
  • Publication number: 20140239806
    Abstract: A mercury-free low-pressure lamp having a bulb is provided. The bulb includes an emissive material and one or more phosphors. The emissive material includes at least one of an alkali metal or an alkaline earth metal, wherein when the bulb is in a non-operational state, the emissive material condenses into a liquid or solid, and when the bulb is in an operational state the emissive material forms an emitter, the emitter in combination with one or more gases generate photons when excited by an electrical discharge. The one or more phosphors are configured to convert at least a portion of the photons to other visible wavelengths.
    Type: Application
    Filed: May 8, 2014
    Publication date: August 28, 2014
    Applicant: Elwha LLC
    Inventors: Roderick A. Hyde, Jordin T. Kare, Tony S. Pan, Thomas Allan Weaver, Lowell L. Wood,, Jr.
  • Publication number: 20140239807
    Abstract: A deceleration-triggered stop lamp installable into for vehicles includes a support frame to which is mounted: a plurality of LEDs; a deceleration sensor; microcontroller; an energy storage component; and power circuitry configured to detect when the vehicle brake pedal has been depressed and to divert power from the vehicles power system to charge the energy storage component. In the event the vehicle decelerates at a rate greater than a predefined threshold, the power circuitry is configured to illuminate the LEDs with power from the energy storage component.
    Type: Application
    Filed: February 25, 2013
    Publication date: August 28, 2014
    Inventor: Jeffery B. Hammock
  • Publication number: 20140239808
    Abstract: A system includes at least one lighting device, e.g., at least one LED luminaire, and a control circuit configured to control a spectral output produced by the at least one lighting device responsive to environmental information about an area illuminated by the at least one lighting device. The control circuit may be configured to control a color temperature of the illumination responsive to the environmental information. In some embodiments, the control circuit may be configured to lower the color temperature of the illumination responsive to the environmental information indicating a level of reflected light and/or a weather condition, such as precipitation, correlated with the presence or likely presence of glare.
    Type: Application
    Filed: February 26, 2013
    Publication date: August 28, 2014
    Applicant: Cree, Inc.
    Inventors: Dante P. Nava, Joshua J. Markle, Robert E. Higley, Edward Steinke
  • Publication number: 20140239809
    Abstract: A lighting device and system having at least one circuit, the circuit having at least two LEDs connected in series, parallel or anti-parallel configuration and at least one current limiting diode. The device or system may be driven with AC or DC power and may further include a sensor and polarity switching circuit to utilize all LEDs within the circuit when drive by DC power.
    Type: Application
    Filed: August 20, 2012
    Publication date: August 28, 2014
    Applicant: LYNK LABS, INC.
    Inventor: Michael Miskin
  • Publication number: 20140239810
    Abstract: A power factor correction converter in a buck-boost configuration may include a set-up circuit configured to supply an input voltage, a buck transistor connected to the set-up circuit, and configured to receive a current from the diode bridge, a first diode connected to the buck transistor, a boost transistor, a resistor connected to the boost transistor, a coil that connects the buck transistor and the boost transistor, a buck-boost PFC regulator connected to the set-up circuit, and configured to regulate a time pattern of the on/off status of the first transistor and the second transistor synchronously, a second diode connected to the coil and the boost transistor, and configured to output a first level voltage, a capacitor connected to the second diode and a load connected to the second diode.
    Type: Application
    Filed: February 28, 2013
    Publication date: August 28, 2014
    Applicant: Asahi Kasei Microdevices Corporation
    Inventors: Fernando Ramon MARTIN-LOPEZ, Gabriel C. GAVRILA, Takahiro UMEKI
  • Publication number: 20140239811
    Abstract: Mechanisms for light management include a light emitting diode (LED) light bulb. The LED light bulb includes multiple light emitting diodes (LEDs) configured for illumination in the LED light bulb and includes a battery. A base is configured to fit a standard socket designed for an incandescent light bulb, and the base is configured to operatively connect to an electrical power source. A module is operative to detect a residual voltage of the power source when a control for powering the LED light bulb is powered off. The module is configured to determine that a power outage occurred and operative to switch to battery power from the battery in response to not detecting the residual voltage of the power source.
    Type: Application
    Filed: May 5, 2014
    Publication date: August 28, 2014
    Applicant: AT&T Intellectual Property, I, L.P.
    Inventors: Barrett Kreiner, Jonathan L. Reeves
  • Publication number: 20140239812
    Abstract: An apparatus is provided. The apparatus includes a plasma generation element physically coupled to a first main electrode. The plasma generation element includes at least a first open end and a second open end. Each open end defines a nozzle such that the first open end directs an ablative plasma to a second main electrode and the second open end directs the ablative plasma to a third main electrode.
    Type: Application
    Filed: February 19, 2014
    Publication date: August 28, 2014
    Applicant: General Electric Company
    Inventors: Marcelo Esteban Valdes, Thangavelu Asokan
  • Publication number: 20140239813
    Abstract: This disclosure describes systems, methods, and apparatus for ensuring desirable ignition of plasma in a plasma processing chamber via providing increased instantaneous power during an ignition period for both continuous wave (CW) and pulsed power delivery. The systems, methods, and apparatus can be applied to both initial ignition of a plasma and reignition of a plasma where pulsed power delivery leads to periodic extinction of the plasma.
    Type: Application
    Filed: February 24, 2014
    Publication date: August 28, 2014
    Applicant: Advanced Energy Industries, Inc.
    Inventors: Gideon Van Zyl, David W. Madsen, Fernando Gustavo Tomasel
  • Publication number: 20140239814
    Abstract: An LED lamp has two preheating current control units respectively connected to a first electrode terminal and a second electrode terminal of the LED lamp, two lamp-side rectification circuits, and an LED light string. Each preheating current control unit has a ballast-side rectification circuit connected to one of the first and second electrode terminals and a load-varying circuit having a resistive load and a control circuit. The resistive load is serially connected to a DC output terminal of the ballast-side rectification circuit through the control circuit. The control circuit adjusts a resistance of the resistive load. Two input terminals of each lamp-side rectification circuit are respectively connected to one of the electrodes of each of the first electrode terminal and the second electrode terminal. The LED light string has two ends respectively connected to the two output terminals of each lamp-side rectification circuit, and has multiple series-connected LED elements.
    Type: Application
    Filed: November 20, 2013
    Publication date: August 28, 2014
    Applicant: LUXUL TECHNOLOGY INCORPORATION
    Inventors: Cheng-Hung PAN, Perng-Fei YUH
  • Publication number: 20140239815
    Abstract: The invention provides a method and system for controlling a streetlight lighting operation. The system includes a plurality of streetlights, pole controllers associated with one or more streetlights and segment controller for a set of streetlights. The segment controller is configured to generate control signals based on control criterion that are translated as commands to the pole controllers to operate the streetlights. The operation of streetlights includes switching on, switching off or dimming of the streetlights. The method described herein also includes receiving feedback from the pole controllers that is useful for monitoring and maintenance operations.
    Type: Application
    Filed: August 6, 2013
    Publication date: August 28, 2014
    Applicant: Power One Data International, Inc.
    Inventors: Michael McGOWAN, Sameer PATIL, Mahesh H. KALAIAH
  • Publication number: 20140239816
    Abstract: Lighting control systems and a method of control the same are provided. For example, the lighting control system includes at least one lighting device transmitting and receiving a wireless communication signal and controlled by a received wireless communication signal, a lighting device authentication code including unique identification information assigned to the lighting device, and a user terminal having an image recognition unit, the user terminal configured to recognize the lighting device authentication code using the image recognition unit, extract the unique identification information from the lighting device authentication code recognized by the image recognition unit, pair the user terminal with the lighting device based on the extracted unique identification information, and control the at least one lighting device.
    Type: Application
    Filed: September 23, 2013
    Publication date: August 28, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Gon LEE, Ki Young KIM, Yong Min JUNG
  • Publication number: 20140239817
    Abstract: A system and method are disclosed for providing fail-safe operation of a lighting system. A lighting level detector is used to obtain a baseline lighting level for a low-intensity light. If the detector measures less than the baseline level when an occupancy sensor determines the space is unoccupied, a high-intensity light is energized and an indication is provided to a user that the low-intensity light has failed. A method is also disclosed for daylighting operation of a lighting system. An occupancy sensor can have Wi-Fi functionality to enable remote configuration of the sensor. A line voltage occupancy sensor can include an interface with low voltage devices. An occupancy sensor can include an integral interface to enable an external control system to override the sensor's normal logic under emergency conditions. An occupancy sensor can include an active temperature compensation feature. An occupancy sensor can also incorporate an automatically adjustable coverage area.
    Type: Application
    Filed: February 25, 2013
    Publication date: August 28, 2014
    Applicant: LEVITON MANUFACTURING COMPANY, INC.
    Inventors: Richard A. Leinen, Jaiganesh Balasubramanian, Justin Morton, Subramanian Muthu, Robert Hick, John Elzie, Brian Carberry, David Buerer
  • Publication number: 20140239818
    Abstract: A lighting system for accenting a region of a target surface comprising a color matching engine, a plurality of light sources, a color capture device configured to measure light reflected by a target surface, and a computerized device configured to operate the plurality of light sources to emit an analysis light so as to be incident upon the target surface and identify a region of the target surface that reflects two or more wavelength ranges of light using a pattern recognition algorithm, defining a detected pattern having wavelength ranges. The color matching engine is configured to perform a matching operation that operates to determine dominant wavelength(s) of the wavelength ranges and polychromatic lights including or excluding dominant wavelength(s). The computerized device operates the light sources to emit a combined light being sequentially each of the polychromatic lights.
    Type: Application
    Filed: May 12, 2014
    Publication date: August 28, 2014
    Applicant: LIGHTING SCIENCE GROUP CORPORATION
    Inventors: Fredric S. Maxik, David E. Bartine, Robert R. Soler, Mark Andrew Oostdyk, Addy S. Widjaja, Matthew Regan
  • Publication number: 20140239819
    Abstract: A centralized photosensitive LED streetlight control system, includes a control center, a number of LED streetlights and multiple field distribution boxes, with each field distribution box supplying power to multiple LED streetlights in a centralized way, and also includes multiple field controllers used in a complementing way with field distribution boxes. The field controller consists of photosensitive sensor, processor, power switch control unit and communication module, with the power switch control unit connecting to the power switch of field distribution box, the processor collecting and converting photosensitive sensor signal and outputting after analyzing and judging the control signal to the power switch control unit to control the power switch of field distribution box; the communication module connecting with the control center network for the control center to monitor in real time the working states of field controller and power switch.
    Type: Application
    Filed: February 26, 2013
    Publication date: August 28, 2014
    Applicants: Shanghai Sansi Electronics Engineering Co., Ltd, Jiashan Sansi Photoelectricity Technology Co., Ltd., Shanghai Sansi Technology Co., Ltd.
    Inventors: Yinghua Wang, Ming Chen, Yanyan Sun, Na Feng
  • Publication number: 20140239820
    Abstract: Provided herein are systems and methods for outdoor lighting, which generally include two or more light sources. One light source is a monochromatic light source producing a light with a peak wavelength of about 580 nm or above. A second light source is a polychromatic light source producing a green-tint white light. During a standby operational mode, a control system maintains the first light source illuminated. The control system, which includes an integrated imaging system, illuminates the second light source when the imaging system identifies a target in an illumination area. Methods of preparing and using such outdoor lighting system are also provided.
    Type: Application
    Filed: May 7, 2014
    Publication date: August 28, 2014
    Applicant: Biological Illumination, LLC
    Inventors: Fredric S. Maxik, David E. Bartine, Robert R. Soler, Valerie Ann Bastien, James Lynn Schellack, Eliza Katar Grove
  • Publication number: 20140239821
    Abstract: A system has a lighting fixture has a first connector electrically coupled to a power supply, the first connector being separately electrically coupled to a load, an occupancy sensor having a second connector adapted and configured to engage the first connector, the occupancy sensor being capable of detecting a presence of a person within a monitored space, the first and second connectors forming a disconnect for the lighting fixture, and a switch located in the occupancy sensor arranged to electrically couple the power supply and the load when the first connector is coupled to the second connector and when the occupancy sensor detected a person's presence within the monitored space.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: LEVITON MANUFACTURING CO., INC.
    Inventor: Thomas W. Leonard
  • Publication number: 20140239822
    Abstract: According to an aspect of the invention, a lighting control method is conceived for controlling the illumination of a working area, wherein an RFID-enabled light sensor attached to said working area measures incident light on the working area, and wherein an RFID-enabled luminary periodically reads the measured incident light from said RFID-enabled light sensor and adapts its light level in dependence on the measured incident light, such that a predefined illumination level on the working area is maintained.
    Type: Application
    Filed: February 24, 2014
    Publication date: August 28, 2014
    Applicant: NXP B.V.
    Inventor: Ewout Brandsma
  • Publication number: 20140239823
    Abstract: An organic light emitting display device includes a substrate including a display area on which a plurality of pixels are formed and a non-display area surrounding the display area; a first power line positioned on a lower non-display area; an auxiliary power line positioned on an upper non-display area; a first power supply supplying a first voltage to the first power line; and an auxiliary power supply supplying an auxiliary voltage to the auxiliary power line. Accordingly, it is possible to provide an organic light emitting display device capable of equalizing luminance by minimizing a variation in power supplied to each pixel.
    Type: Application
    Filed: July 11, 2013
    Publication date: August 28, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventor: Jeong-Keun AHN
  • Publication number: 20140239824
    Abstract: The present invention is suitable for an LED controlling field, and provides an LED controlling circuit with high power factor and an LED lighting device. In the present invention, by using an LED current controlling circuit with high power factor comprising a plurality of output current controlling modules, a resistor Re and a reference voltage generating module, the LED groups is driven accordingly in a piecewise manner to be on and a current flows through the LED groups according to the input voltage of the LED strip, without sampling the input voltage of the LED strip by a sampling circuit and without increasing the number of high cost component, which increase the utilization of the LED, the power factor of the whole LED controlling circuit and the efficiency of the system, thereby solving the problem of low power factor and low efficiency system existing in the prior art.
    Type: Application
    Filed: August 12, 2013
    Publication date: August 28, 2014
    Applicant: Shenzhen Sunmoon Microelectronics Co., Ltd
    Inventor: Zhaohua Li
  • Publication number: 20140239825
    Abstract: Power converters that produce less noise are disclosed. For example, in an embodiment, power converter can include a first inductor magnetically coupled to a second inductor, wherein a first end of the second inductor is electrically open and a second end of the second inductor is electrically coupled to ground via a second capacitor, a transistor electrically connected to the first inductor, and control circuitry to control switching of the transistor, wherein when the transistor is repeatedly switched on and off by the control circuitry, a current loop is formed through the transistor, the second capacitor, the first inductor and the second inductor, the current loop causing a reduced amount of switching noise to be generated by the power converter.
    Type: Application
    Filed: February 10, 2014
    Publication date: August 28, 2014
    Applicant: Marvell World Trade Ltd.
    Inventors: Jinho CHOI, Tuyen Doan, Yee-Huan Ng, Wanfeng Zhang
  • Publication number: 20140239826
    Abstract: Method and means for driving one or more LEDs. The method includes turning a power switch on to provide current through an inductor and the power switch, measuring voltseconds of the LEDs at a cycle time, comparing the measured voltseconds to a reference signal at an end of the cycle time, generating a signed discrete logical signal based on a difference between the measured voltseconds and the reference signal, and generating a control signal using the signed discrete logical signal to regulate a peak current through the power switch by keeping the cycle time voltseconds substantially constant. The reference signal may be proportional to a set average LED voltage.
    Type: Application
    Filed: May 1, 2014
    Publication date: August 28, 2014
    Applicant: Point Somee Limited Liability Company
    Inventors: Anatoly Shteynberg, Harry Rodriguez
  • Publication number: 20140239827
    Abstract: A light emitting diode (LED) fluorescent lamp includes an external connection pin including a first connection pin and a second connection pin, an LED array including a plurality of light emitting diodes (LEDs) connected in series, a current stabilizing capacitor connected in parallel to the LED array, and a capacitive element unit connected between the LED array and the external connection pin and configured to vary an impedance of a fluorescent lamp ballast connected to the capacitive element unit through the external connection pin.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: KUMHO ELECTRIC, INC.
    Inventor: Myung Koo PARK
  • Publication number: 20140239828
    Abstract: The present invention is a lighting module, in particular, a lighting module that emits warmer color light as it dims. The lighting module preferably has a dimmable power source and a printed circuit board having at least two series of LEDs. The first LED series has a resistor and three LEDs that operate at full brightness at a first voltage, e.g. 12v. The second LED series has a voltage regulator, two capacitors and three LEDs that operate at full brightness at a second voltage, e.g. 6v, less than the first voltage. The first series has a different color light output from the second series. The module produces a linear color shift for a range of voltages, e.g. from seven volts to twelve volts.
    Type: Application
    Filed: February 28, 2013
    Publication date: August 28, 2014
    Inventor: Gregory S. Smith
  • Publication number: 20140239829
    Abstract: The present application discloses a LED driver including: a first and a second auxiliary windings connected in series with each other; a first rectifying device coupled with a terminal of the first auxiliary winding while the other terminal is coupled with the second auxiliary winding; a second rectifying device coupled with a terminal of the second auxiliary winding; a first voltage regulator coupled with the first rectifying device; an unidirectional conducting device having a positive and a negative terminals; and a DC output terminal coupled with the negative terminal of the unidirectional conducting device and configured to provide required DC electricity to a control circuit in the LED driver. The LED driver can guarantee that Vcc voltages provided under a heavy or light load state can always meet the DC power supplying requirements of respective control devices in the driver and meanwhile losses can be reduced.
    Type: Application
    Filed: July 9, 2013
    Publication date: August 28, 2014
    Inventors: Xinghua ZHANG, Linwei CHEN
  • Publication number: 20140239830
    Abstract: According to an embodiment, an LED current control apparatus controls conduction of a switching transistor which is connected to a primary winding of a flyback convertor. The LED current control apparatus includes a pseudo sine wave generation unit, a synchronous control unit, a first comparator, a switch control unit, a crest value correction unit, and a pulse monitor control unit.
    Type: Application
    Filed: August 26, 2013
    Publication date: August 28, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Shinichi Kiyota
  • Publication number: 20140239831
    Abstract: A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a PFC circuit. The PFC circuit includes a square circuit which squares a result of multiplication of an input voltage detection signal and feedback information (output voltage of an error amplifier circuit). The PFC circuit drives on the transistor when a detection voltage developed at the resistor reaches zero, and drives off the transistor when the detection signal reaches an output signal of the square circuit.
    Type: Application
    Filed: May 8, 2014
    Publication date: August 28, 2014
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventors: Ryosei MAKINO, Kenichi YOKOTA, Tomohiro TAZAWA
  • Publication number: 20140239832
    Abstract: Exemplary embodiments provide for power conversion for solid state lighting coupled to a first switch, such as a dimmer switch. An exemplary apparatus includes a switching power supply and a first adaptive interface circuit. The first adaptive interface circuit may include a resistive impedance coupled in series to a reactive impedance. The apparatus may also include a second adaptive interface circuit including a second switch coupled to the reactive impedance. The second adaptive interface circuit is configured to conduct current from the first switch in a second current path. At least one of the first and second adaptive interface circuits may be configured to damp oscillation when the first switch turns on.
    Type: Application
    Filed: May 1, 2014
    Publication date: August 28, 2014
    Applicant: Point Somee Limited Liability Company
    Inventors: Anatoly Shteynberg, Harry Rodriguez, Bradley M. Lehman, Dongsheng Zhou, Harlan H. Ohara
  • Publication number: 20140239833
    Abstract: A solid-state lighting system comprises a plurality of light-emitting devices (e.g., light-emitting diodes) and an alternating current to direct current (AC-DC) converter that converts AC power to DC power for powering the plurality of light-emitting devices. The AC-DC converter is configured to perform AC-DC conversion directly, without the need for or use of a bridge rectifier or step-down transformer. According to one aspect of the invention, the light-emitting devices of the solid-state lighting system are autonomous and individually powered by a plurality of DC power supplies generated from the DC power produced by the AC-DC converter. According to another aspect, a plurality of phase-offset dimmer control signals are generated based on waveform distortions in a dimming signal produced by a conventional dimmer switch. The phase-offset dimmer control signals are used to individually control the dimming of the light-emitting devices.
    Type: Application
    Filed: May 8, 2014
    Publication date: August 28, 2014
    Inventor: Earl W. McCune, JR.
  • Publication number: 20140239834
    Abstract: An LED lighting device using a ballast may be provided that includes: an LED unit which includes at least one LED device; a rectifier which rectifies a current power signal output from the ballast; and a current driving unit which receives an output current of the rectifier and controls the power which is transmitted from the ballast to the LED unit. The current driving unit transmits current which has a magnitude greater than that of the output current of the rectifier to the LED unit.
    Type: Application
    Filed: February 21, 2014
    Publication date: August 28, 2014
    Applicant: HiDeep Inc.
    Inventors: Jaeyoung Choi, Heeseok Han
  • Publication number: 20140239835
    Abstract: The present invention relates to an SCR dimming circuit and method for regulating the luminance of an LED load. In one embodiment, an SCR dimming circuit can include: an SCR element that generates a lack-phase AC voltage based on a sinusoidal AC supply; a rectifier bridge that generates a lack-phase DC voltage based on the lack-phase AC voltage; a conduction angle generator that receives the lack-phase DC voltage, and generates a controlling signal representative of a conduction angle of the SCR element; and a dimming signal generator that generates a dimming signal to regulate luminance of the LED load, where the dimming signal generator receives the controlling signal, an adjustable signal, and a clamping voltage, an amplitude of a dimming phase angle range is selected by a fixed signal determined by the clamping voltage, and the dimming phase angle range may be shifted by regulating the adjustable signal.
    Type: Application
    Filed: May 8, 2014
    Publication date: August 28, 2014
    Applicant: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Shenglun Chen, Wei Chen, Xiaoru Xu
  • Publication number: 20140239836
    Abstract: An electronic dimming ballast or light emitting diode (LED) driver for driving a gas discharge lamp or LED lamp may be operable to control the lamp to avoid flickering and flashing of the lamp during low temperature or low mercury conditions. Such a ballast or driver may include a control circuit that is operable to adjust the intensity of the lamp. Adjusting the intensity of the lamp may include decreasing the intensity of the lamp. The control circuit may be operable to stop adjustment of the intensity of the lamp if a magnitude of the lamp voltage across the lamp is greater than an upper threshold, and subsequently begin to adjust the intensity of the lamp when the lamp voltage across the lamp is less than a lower threshold. Subsequently beginning to adjust the intensity of the lamp may include subsequently decreasing the intensity of the lamp.
    Type: Application
    Filed: February 26, 2013
    Publication date: August 28, 2014
    Applicant: LUTRON ELECTRONICS CO., INC.
    Inventors: Venkatesh Chitta, Russell L. MacAdam
  • Publication number: 20140239837
    Abstract: An ion generation device includes: a high voltage generation circuit; and an ion generation element. The high voltage generation circuit includes: a capacitor; a high voltage transformer; a switching element; and a pulse signal generation portion which generates a pulse signal for controlling the turning on and off of the switching element. The pulse signal generation portion adjusts a pulse width of an on-period such that the pulse width of the on-period of the pulse signal is substantially equal to a time obtained by multiplying the reciprocal of an output voltage frequency at the time of a forward operation of the high voltage transformer by one-fourth.
    Type: Application
    Filed: October 17, 2012
    Publication date: August 28, 2014
    Inventor: Kazuharu Date
  • Publication number: 20140239838
    Abstract: An ignition apparatus has an ignition transformer that has a primary winding and a secondary winding. The transformer has a first primary winding connection for connection to a first supply voltage potential and a second primary winding connection for connection to a second supply voltage potential via a controllable switching element. Accordingly a first capacitor is connected up between the first primary winding connection and the second supply voltage potential and a second capacitor is connected up between the second primary winding connection and the second supply voltage potential.
    Type: Application
    Filed: February 25, 2014
    Publication date: August 28, 2014
    Applicant: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: STEPHAN BOLZ
  • Publication number: 20140239839
    Abstract: The present invention provides a display panel control circuit, including: a voltage adjustment unit including a high side switch coupled between an output terminal and a high voltage source, a low side switch coupled between the output terminal and a low voltage source, and a voltage adjustment switch coupled between the output terminal and a switching node; a direction control unit, including a first diode having a cathode coupled to the switching node and an anode coupled to a voltage rising node, and a second diode having an anode coupled the switching node and a cathode coupled to a voltage falling node; a voltage rising resistor coupled between the voltage rising node and a shaping voltage source; and a voltage falling resistor coupled between the voltage falling node and the shaping voltage source.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: RICHTEK TECHNOLOGY CORPORATION
    Inventor: Der-Jiunn Wang
  • Publication number: 20140239840
    Abstract: An LED controller reduces jitter of an LED lamp. In one embodiment, the LED controller includes a jitter detection circuit adapted to determine an amount of jitter in an input voltage signal. The input voltage signal includes a plurality of cycles and indicates an amount of dimming for the LED lamp. The LED controller further includes a jitter compensation circuit, which generates a control signal to control regulated in the LED lamp such that an output light intensity of the LED lamp substantially corresponds to the amount of dimming for the LED lamp. The control signal controls current delivery to the LED lamp to compensate for the determined amount of jitter in the input voltage signal.
    Type: Application
    Filed: February 26, 2014
    Publication date: August 28, 2014
    Applicant: Dialog Semiconductor Inc.
    Inventors: Xiaoyan Wang, Liang Yan, Nan Shi
  • Publication number: 20140239841
    Abstract: A color adjustable lamp. The lamp includes a first white emitter source having a plurality of colors so as to emit a first combined spectrum of light. A first drive signal having a first plurality of pulses at a first logic level and a second plurality of pulses at a second logic level operably controls the first white emitter source. The first and second pluralities of pulses having a first duty cycle. Changing a ratio of the pulses of the first and second pluralities, the first duty cycle, or both, changes the first combined spectrum.
    Type: Application
    Filed: February 28, 2013
    Publication date: August 28, 2014
    Applicant: Government of the United States as Represented by Secretary of the Air Force
    Inventor: Government of the United States as Represented by the Secretary of the Air Force
  • Publication number: 20140239842
    Abstract: A load control device, such as an LED dimmer switch, for example, may be configured to automatically determine whether to provide a forward or reverse phase control signal to a load. As disclosed herein, such a load control device may provide a plurality of different control signals to the lighting load, for example, during an initial set-up procedure. The load control device may provide the plurality of different control signals to determine an appropriate control signal for the load. Each control signal may be characterized by a load control type and a switching time. The load control type may be one of a forward phase control type, a reverse phase control type, or a full conduction control type. The switching time may include, but is not limited to, switching times of approximately 0 ?s, 10 ?s, 50 ?s, and 100 ?s.
    Type: Application
    Filed: February 26, 2013
    Publication date: August 28, 2014
    Applicant: LUTRON ELECTRONICS CO., INC.
    Inventor: Christopher J. Salvestrini
  • Publication number: 20140239843
    Abstract: A programmable touchscreen light source dimmer is provided. The present invention comprises a dimmer circuitry housing that fits within a conventional light switch box, a removable faceplate, and optionally a cover that may be affixed over the faceplate. The present invention uses a microcontroller that is able to alter the output signal that is used to control the luminosity of the connected light sources between PWM and reverse phase control so that the type of dimming is ideally suited for the type of light source. The faceplate has a dynamic touchscreen through which users can easily alter the luminosity of connected light sources, program that device to follow preset schedules or respond to external stimuli, or activate various secondary functions.
    Type: Application
    Filed: February 25, 2014
    Publication date: August 28, 2014
    Inventor: Nguyen Hoan Hoang
  • Publication number: 20140239844
    Abstract: The present invention teaches self-contained lighting units which may be AC or DC powered, for example LED bulbs, and wherein the operation of said lighting units may be configured by a user through touch events or gestures, or through the use of switches or buttons. For example, operational parameters such as colour of light emitted, colour temperature, light level and an auto-off period, amongst others, may be adjusted, and stored in NVM. Use of touch swipe recognition and sliders structures for said configuration is taught. A number of intelligent luminaire embodiments are also disclosed, such as lamps with text character recognition and a wide range of connectivity options. Simple touch controlled dimmers that generate minimal EMI are described. A number of teachings on the provision of user feedback is presented. Self-contained lighting units such as LED bulbs which may be configured via IR are disclosed.
    Type: Application
    Filed: March 15, 2013
    Publication date: August 28, 2014
    Inventor: AZOTEQ (PTY) LTD
  • Publication number: 20140239845
    Abstract: A lighting apparatus comprising a plurality of luminaires, each luminaire comprising a controller configured to operate the luminaire and positioned in communication with a computerized device. Each luminaire may be selectively operable to emit source light characterized by a dominant source light wavelength within a range from 390 nanometers to 750 nanometers. Additionally, at least two of the plurality of luminaires may be operable to emit source lights with different dominant source light wavelengths, and such that one or more source lights emitted by the plurality of luminaires may combine to form a combined light at a distance from the plurality of luminaires defined as a combining distance. Furthermore, the dominant source light wavelength of at least some of the luminaires of the plurality of luminaires may be variable with time.
    Type: Application
    Filed: May 8, 2014
    Publication date: August 28, 2014
    Applicant: LIGHTING SCIENCE GROUP CORPORATION
    Inventors: Fredric S. Maxik, Robert R. Soler, David E. Bartine, Addy S. Widjaja, Matthew Regan, Eliza Katar Grove