Pulsating Or A.c. Supply Patents (Class 315/246)
  • Patent number: 10925127
    Abstract: A discharge lamp drive device includes a discharge lamp driver adapted to supply a drive current to a discharge lamp having a first electrode and a second electrode, a control section adapted to control the discharge lamp driver, and a storage section adapted to store a plurality of drive patterns of the drive current. The control section is adapted to select one drive pattern of the plurality of drive patterns based on machine learning, and execute the selected drive pattern.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: February 16, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masaru Kono, Junichi Suzuki, Shun Sato, Yuichiro Iwama
  • Patent number: 10915750
    Abstract: Method and device for searching stripe set are disclosed herein. The method involves: receiving a raw image captured by a rolling shutter image sensor, wherein the raw image includes stripe pattern formed by flashing light source; binarizing the raw image to obtain a binary image, according to a binary threshold, wherein the binary image has two pixel values, one of the two pixel values is set as a preset first value; searching a connected domain having pixels with a first value to obtain a plurality of first connected domains, according to the pixel value in the binary image; selecting a target connected domain corresponding to the stripe pattern from the plurality of first connected domains; determining stripe set according to the target connected domain, wherein the stripe set is the set of the target connected domain corresponds to the stripe pattern.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: February 9, 2021
    Assignee: GUANGDONG VIRTUAL REALITY TECHNOLOGY CO., LTD.
    Inventors: Jie He, Jingwen Dai, Congling Wan, Yongtao Hu
  • Patent number: 10856375
    Abstract: A modular LED lighting system, comprising a coordinator module comprising a coordinator microcontroller electrically coupled to a coordinator communication circuit; a slave module comprising: a slave microcontroller; a slave communication circuit for communicating with the coordinator communication module; and a driver circuit for supplying power to one or more electrically connected LED lights; wherein the slave microcontroller is operable to automatically determine a loading of any LED lights electrically coupled to the driver circuit and in response cause the driver circuit to deliver an appropriate current to the LED lights from a selected power source, the power source being selected by the coordinator microcontroller from one of a solar powered source and mains powered source based on one or more predefined power selection rules evaluated by the coordinator microcontroller.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: December 1, 2020
    Inventors: Mark Hawley, Tony Flint
  • Patent number: 10849201
    Abstract: Driving an LED load using a driving circuit includes controlling a power transistor coupled in series with the LED load to operate in a linear mode when an input voltage varying periodically is higher than a driving voltage for the LED load; adjusting a transistor current flowing through the power transistor based on a difference between the input voltage and the driving voltage, without calculating an error between an average current flowing through the LED load and a desired current; and where the transistor current is controlled to be decreased when the difference between the input voltage and the driving voltage is relatively large, in order to reduce a conduction loss of the power transistor, and to cause the average current flowing through the LED load to meet a predetermined requirement of driving the LED load.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: November 24, 2020
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventors: Qiukai Huang, Jianxin Wang, Huiqiang Chen
  • Patent number: 10795456
    Abstract: The present application provides a method and device for searching stripe set and a system with the same. Wherein, the method includes: a plurality of first connected domains are obtained in the binary image. A target connected domain is selected from the plurality of first connected domains. The stripe set based on the target connected domain is determined to determine a stripe pattern. A center of the stripe pattern is calculated according to the target connected domain of the stripe set. Whether the stripe set is an effective stripe set is determined based on the center of the stripe pattern. The method can eliminate the impact of incomplete stripe pattern on the image and improve the accuracy of recognition.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: October 6, 2020
    Assignee: GUANGDONG VIRTUAL REALITY TECHNOLOGY CO., LTD.
    Inventors: Jie He, Jingwen Dai, Congling Wan, Yongtao Hu
  • Patent number: 10721799
    Abstract: An LED driving device and a constant power dimming circuit and dimming method therefor. The constant power dimming circuit comprises a line voltage compensation module, a modulation module, a filtering module, and a constant current source module. The line voltage compensation module detects changes in line voltage and outputs a first reference voltage. The modulation module modulates the first reference voltage and outputs to the filtering module a second reference voltage. The filtering module filters the second reference voltage signal and then outputs a third reference voltage to the constant current source module. The constant current source module outputs constant current to drive an LED load to operate. By controlling a constant current source circuit, when the duty cycle of the PWM signal is not changed but a mains input voltage is changed, the input power of the system can be maintained constant, and voltage flicker is reduced.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: July 21, 2020
    Assignee: SHENZHEN SENDIS SEMICONDUCTOR CO., LTD.
    Inventors: Xiaoyu Chen, Xunsheng Deng, Bo Chen, Yanquan Mai
  • Patent number: 10712397
    Abstract: The present disclosure is directed to methods and apparatus for locating luminaires within a lighting system where multiple luminaires are located on a grid of DC power rails. The AC signal generator connects to each DC power rail and transmits an AC signal along each DC power rail in turn to luminaires that each compute their distance from the generator based upon the AC signal. The AC signal generator may similarly transmit and receive data communications with luminaires across DC power rails.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: July 14, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Alan James Davie, Andrew Alexander Takmakoff, Paul Richard Simons
  • Patent number: 10660177
    Abstract: A power converter for supplying an output voltage or an output current for powering an LED fixture is described, the power converter comprising: a primary circuit comprising: an input terminal for receiving a supply voltage; a primary winding connected to the input terminal; a secondary circuit comprising a secondary winding that is magnetically coupled with the primary winding for providing the output voltage or output current; the power converter further comprising: a sensor for measuring an electrical characteristic of the secondary circuit and; a detector configured to determine an electrical characteristic of the supply voltage based on the measured electrical characteristic of the secondary circuit.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: May 19, 2020
    Assignee: ELDOLAB HOLDING B.V.
    Inventors: Marc Saes, Willem Johannes Maria Verbeek
  • Patent number: 10637361
    Abstract: Circuits and devices are described that provide power to appliances and other devices via a power correction circuit and an LLC converter, which may for example include resonant series converters and flyback converters. The circuits and devices economize on board space, part size and power start up time by separately powering up the controller circuit portion prior to powering up the LLC converter.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: April 28, 2020
    Assignee: SANKEN ELECTRIC CO., LTD.
    Inventor: Toshihiro Nakano
  • Patent number: 10612727
    Abstract: A retrofit assembly includes at least first and second lighting modules, and at least a central hub positioned between the first lighting module and the second lighting module. Each lighting module includes a tray extending along a longitudinal axis and supporting a solid state light source on a seat defining a plane, a set of legs extending from each side of the seat, and a set of wings extending from the legs and parallel to the plane of the seat, the wings including first and second groups of mounting holes. First and second lenses might be provided to extend across a portion of the seats.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: April 7, 2020
    Assignee: Orion Energy Systems, Inc.
    Inventors: Scott Green, Matthew Tlachac, George Wilson, Marc Meade, Daniel Fonseca, Ron Ogletree
  • Patent number: 10574069
    Abstract: Quickly USB Charging ports for power station or lighting related device has plurality of or combination of outlet or USB-hubs or digital-data delivery assembly, wireless device or adaptor or Video or audio or other electric device's receiving-port(s) has USB charging-ports which meet 2007 released specification has minimum 1.0 Amp to 5 Amp at DC 5 Volt range to safety and no overheat charging capacity to quickly charge DC current into energy-storage unit or assembly inside the other electric or digital product(s) and, optionally, additional outlet-units, to supply AC current to other electric or digital devices including smart phone, computer, communication, consumer electric products, people cosmetic kits or tools or others equipment. The USB-unit(s) or USB-Module(s) or Outlet-unit(s) fit within or install on anywhere of the device's housing including anywhere of the base, housing, walls.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: February 25, 2020
    Inventor: Tseng-Lu Chien
  • Patent number: 10568174
    Abstract: A rectangular pulse generator system is operatively configured to generate a generator output signal, the generator output signal formed as a base rectangular waveform gated by a modulating rectangular waveform, the base rectangular waveform having a first frequency and the modulating rectangular waveform having a second frequency less than the first frequency. A low-pass filter coupled to the rectangular pulse generator system is configured to receive a filter input signal representative of the generator output signal and to produce a filter output signal representative of the filter input signal. A voltage-controlled current source coupled to the low-pass filter generates a drive signal conducted by at least one LED producing a light flux determined by the current level of the LED drive signal. Methods are devised for calibration and for setting the average light flux level.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: February 18, 2020
    Assignee: XTREMELUX CORPORATION
    Inventor: Edward B. Stoneham
  • Patent number: 10554128
    Abstract: A DC to DC converter uses a multi-level boost converter topology. In addition to the input voltage being connected to an output node through a boost inductor in series with a pair of diodes, a bridge circuit generates a multi-level waveform on one side of flying capacitor, which is on the other side connected between the series connected diodes. The boost converter topology maintains low voltage stress on its components under abnormal conditions on the output node and allows for simple pre-charging of the flying capacitor.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: February 4, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Bo Yu, Jinxiang Zhan, Dianbo Fu
  • Patent number: 10551445
    Abstract: A control system that facilitates energy efficient management of building automation systems is disclosed. The control system comprises a source circuit configured to generate a modulated DC control signal comprising data modulated on a DC source signal having a power associated therewith and a load circuit configured to receive the modulated DC control signal. In addition, the control system comprises a transmission circuit comprising a DC powerline, coupled between the load circuit and the source circuit, and configured to transfer the modulated DC control signal from the source circuit to the load circuit, thereby multiplexing both the power and the data transfer over the DC powerline. In some embodiments, a frequency of the modulated DC control signal comprises a first information associated with the data, and a pulse width of the modulated DC control signal comprises a second, different information associated with the data.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: February 4, 2020
    Assignee: Infineon Technologies AG
    Inventor: Prasanna Venkateswaran Vijayakumar
  • Patent number: 10458623
    Abstract: An optical device comprises: a light reflection film which includes a metal layer and a dielectric layer on the metal layer; and a phosphor layer which is located on the dielectric layer and which emits light by being excited by light from a light source. The dielectric layer is located between the metal layer and the phosphor layer. A first wavelength, at which a reflectivity of light vertically incident on the light reflection film from the phosphor layer is highest, is longer than a centroid wavelength of an emission spectrum of the phosphor layer. The dielectric layer has a layered structure comprising a plurality of layers composed of at least two but no more than six layers. Refractive indexes of any two adjacent layers of the plurality of layers are different from each other.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: October 29, 2019
    Assignee: Panasonic Corporation
    Inventors: Shogo Tomita, Taku Hirasawa
  • Patent number: 10448475
    Abstract: A driving circuit for driving a light emitting diode module includes: a control module; a driving module electrically connected to the control module and the light emitting diode module for providing a plurality of driving signals to drive the light emitting diode module; and a detecting module electrically connected to the light emitting diode and the control module, the detecting module detecting a voltage or a current of the light emitting diode module and transmitting a detecting signal corresponding to the voltage or the current of the light emitting diode module to the control module. The control module adjusts a waveform of at least one driving signal of the driving signals for driving the light emitting diode module to illuminate uniformly at a driving time interval of the at least one driving signal of the driving signals.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: October 15, 2019
    Assignee: SILICON TOUCH TECHNOLOGY INC.
    Inventors: Chi-Yuan Chin, Kuei-Jyun Chen
  • Patent number: 10368422
    Abstract: A signal-preserving power booster and a related method. An input module, comprises a reference port and two input ports, receives an input light signal, which conveys an input lighting power component at a first power level and a data-over-light digital stream component imperceptible to a human eye. A MOSFET amplifier module, having access to the reference port, provides an output light signal between two output ports, a first output port being connected to an internal amplifier circuit connected to the first input port and a second output port being connected to the second input port. The output light signal conveys the data-over-light digital stream component from the input light signal and an output lighting power component, at a second power level equal to or greater than the first power level, the output light signal powering an array of LEDs at the second power level.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: July 30, 2019
    Assignee: MEDIA GRAPH DEPOT INC.
    Inventor: David Sellam
  • Patent number: 10356866
    Abstract: A device controls the dimming of a solid-state light source. The device includes a microcontroller configured to receive a rectified phase-cut signal. The microcontroller is configured to measure, within a given period, a duration of a low state of the rectified phase-cut signal and output a low value based thereon. The microcontroller is also configured to measure, within the given period, a duration of a high state of the rectified phase-cut signal and output a high value based thereon. The microcontroller generates an output signal based on at least one of the low value and the high value.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: July 16, 2019
    Assignee: LEDVANCE LLC
    Inventors: Shiyong Zhang, Aaron Ganick
  • Patent number: 10348210
    Abstract: Circuits and devices are described that provide power to appliances and other devices via a power correction circuit and an LLC converter, which may for example include resonant series converters and flyback converters. The circuits and devices economize on board space, part size and power start up time by separately powering up the controller circuit portion prior to powering up the LLC converter.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: July 9, 2019
    Assignee: SANKEN ELECTRIC CO., LTD.
    Inventor: Toshihiro Nakano
  • Patent number: 10295893
    Abstract: A discharge lamp driving device includes a discharge lamp driving section configured to supply a driving current to a discharge lamp, a control section configured to control the discharge lamp driving section, and a voltage detecting section configured to detect an inter-electrode voltage. The control section supplies a driving current including a first alternating current when the inter-electrode voltage is equal to or higher than a first voltage, supplies a driving current including a second alternating current having a frequency which is lower than a frequency of the first alternating current when the inter-electrode voltage is lower than the first voltage and equal to or higher than a second voltage lower than the first voltage, and supplies a driving current including a third alternating current having a frequency which is higher than the frequency of the first alternating current when the inter-electrode voltage is lower than the second voltage.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: May 21, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Tetsuo Terashima
  • Patent number: 10240725
    Abstract: An LED tube lamp, comprising a lamp tube, which includes a light transmissive portion, a reinforcing portion and an end cap; an LED module, which includes an LED light source and an LED light strip; and a power supply module, which includes a set of N electronic components operably interconnected to drive the LED light source, wherein: the light transmissive portion is fixedly connected to the reinforcing portion; the reinforcing portion includes a platform and a bracing structure; the bracing structure is fixedly connected to the platform and holds the platform in place; the LED light source is thermally and electrically connected to the LED light strip, which is in turn thermally connected to the reinforcing portion; and the end cap is attached to an end of the lamp tube.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: March 26, 2019
    Assignee: Jiaxing Super Lighting Electric Appliance Co., Ltd.
    Inventors: Aiming Xiong, Qifeng Ye, Yueqiang Zhang
  • Patent number: 10244636
    Abstract: A composite film is disclosed. The composite film includes a substrate, a thermal barrier layer located on top of the substrate, wherein the thermal barrier layer has a higher decomposition temperature than the substrate, and a thin film located on top of the thermal barrier layer, wherein the thin film is to be thermally processed by a pulsed light from a flashlamp.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: March 26, 2019
    Assignee: NCC NANO, LLC
    Inventors: Kurt A Schroder, Karl M Martin, Doug K. Jackson, Steven C McCool
  • Patent number: 10231302
    Abstract: A circuit for adjusting a frequency of an AC direct lighting apparatus is provided. The circuit may include a reference voltage generation unit configured to receive a dimming voltage having a first frequency and a first voltage range, and generate a reference voltage having a second voltage range, a sensing section determining unit configured to generate first and second section reference voltages based on the reference voltage, and determine a driving current sensing section using the first and second section reference voltages, and a driving signal generation unit configured to generate a switching device driving signal having a second frequency through the determined driving current sensing section.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: March 12, 2019
    Assignee: MAGNACHIP SEMICONDUCTOR, LTD.
    Inventors: Gyu Ho Lim, Tae Kyoung Kang, Zhi Yuan Cui
  • Patent number: 10225908
    Abstract: An active damping circuit is disclosed, which includes a peak current limiter, a drain source voltage limiter, a turn-on driver, a resistor shunt circuit, and a peak current sensor. The peak current sensor detects a rising edge of an input voltage from a phase cut dimmer by detecting a higher peak current. This drives a collector voltage of a second transistor of the peak current limiter low, which lowers a gate voltage of a first transistor of the peak current sensor, and forces it into a linear operating region, so it functions as a damping resistor. When the peak current sensor detects a decreased peak current, such that the turn-on edge of the input voltage is passed, the second transistor turns off, and the turn-on driver turns the first transistor on, such that the active damping circuit is waiting for a next edge of the input voltage.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: March 5, 2019
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Jinsheng Wei, Andrew Johnsen, Ranjit Jayabalan, Nitin Kumar
  • Patent number: 10172200
    Abstract: A system for regulating the minimum output current of an LED dimming power supply, comprising: an initial value setting module, a data detection module, a data processing module, an output adjustment module, a DC/DC current output module electrically connected with the output adjustment module, a regulated load connected in series at the output of the DC/DC current output module, and an output regulation module. The present invention is capable of utilizing those modules mentioned above to make the regulated load modularization and standardization. It means that the resistance of the regulated load is designed to a standard value, and the regulated load is set in a standard module, when the batches of LED dimming power supply need to regulate the minimum output current.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: January 1, 2019
    Assignee: Self Electronics Co., Ltd.
    Inventors: Xiaobo You, Xuejun Zou
  • Patent number: 10153664
    Abstract: A power transmitter includes: a first power transmission electrode having a flat surface; a second power transmission electrode that is spaced from the first power transmission electrode in a direction along the surface of the first power transmission electrode and has a flat surface; a power transmission circuit that is electrically connected to the first and second power transmission electrodes and outputs AC power to the first and second power transmission electrodes; a first conductive shield that is disposed between the first and second power transmission electrodes, the first conductive shield being spaced from each of the first and second power transmission electrodes; and at least one second conductive shield that is spaced from the first and second power transmission electrodes in a direction perpendicular to the surface of the first power transmission electrode and covers at least one of a first gap and a second gap, the first gap being disposed between the first power transmission electrode and the
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: December 11, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiromu Matsumoto, Hiroshi Kanno, Hiroshi Yamamoto
  • Patent number: 10154394
    Abstract: A system and method of allowing a network device to receive a customized version of a reference design is disclosed. In one embodiment, many values that may be subject to customization are no longer fixed by the reference design. Rather, the reference design utilizes rewritable non-volatile memory to store a set of customization values that can be changed, based on a customer's preference. The system also includes a configuration tool, which interfaces with the network device. Using vendor-unique commands, the configuration tool is able to initialize this set of customization values to the values requested by the customer. In operation, the reference design is downloaded into the network device. The configuration tool is then used to establish the customized parameters for a particular customer. This process allows the manufacturer to create one reference design, which can be customized without the need to modify the code or recompile the source code.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: December 11, 2018
    Assignee: Silicon Laboratories, Inc.
    Inventors: DeWitt Clinton Seward, IV, Clayton Hollis Daigle, Gregory Allan Hodgson
  • Patent number: 10149368
    Abstract: Embodiments are provided for systems and methods of managing a lighting system. According to certain aspects, the lighting system includes a low voltage controller (LVC) connected to multiple switches and to multiple drivers. Based on signals received from the switches, the LVC may determine a desired lighting setting as well as an adjustment setting of the lighting setting. The LVC may apply an appropriate signal to a driver to cause the driver to power a corresponding portion of luminaires. The LVC may include a memory configured to store adjustment settings so that the LVC may revert back to desired lighting and adjustment settings.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: December 4, 2018
    Assignee: KENALL MANUFACTURING COMPANY
    Inventor: Kevin Dahlen
  • Patent number: 10091848
    Abstract: The present invention provides a current control circuit for a driving circuit system of a LED assembly, wherein the driving circuit system includes a current module, a rectifier, and a thyristor, the thyristor is connected in series between an AC power supply and the rectifier, the rectifier rectifies an input AC voltage provided by the thyristor and provides a rectified voltage to an anode of the LED assembly, and an input terminal of the current module and a cathode of the LED assembly are connected to set a current flowing through the LED assembly.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: October 2, 2018
    Assignee: PRINCETON TECHNOLOGY CORPORATION
    Inventor: Sheng-You Zhang
  • Patent number: 10073481
    Abstract: Representative implementations of devices and techniques provide local and/or remote control for an appliance. A load control device includes local controls and also includes communication components for remote operations. In one implementation, the load control device is configurable for use with a variety of appliances based on interchangeable sleeves that adapt the load control device to power leads having different configurations.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: September 11, 2018
    Inventors: Patrick Reed, Joerg Wagner, Corey Wagner
  • Patent number: 10073335
    Abstract: A projection device for projecting at least one image onto a projection surface is provided. According to the present disclosure, a control device of the projection device is designed, on the basis of an evaluation of at least one measured value of a measuring device of the projection device determined during a drive of a discharge lamp of the projection device with a current waveform to be checked, to check the current waveform in respect of its suitability for minimizing an electrode burn-back of a first electrode and a second electrode, and in the case of a positive check result, to retain the checked current waveform, and in the case of a negative check result, depending on a checked commutation vector characterizing the checked current waveform, to create, by means of a specifiable algorithm, a modified commutation vector that characterizes a modified current waveform.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: September 11, 2018
    Assignee: OSRAM GmbH
    Inventors: Marc Czichy, Michael Heise, Markus Baier, Norbert Magg, Daniel Sixtensson
  • Patent number: 10057950
    Abstract: The invention relates to a ballast (101) for lighting means, comprising an actively switched power factor correction stage (102), which is implemented in a Totem Pole boost topology, comprising a control circuit (103), which issues control signals for driving switches of the PFC stage (102), wherein the control circuit (103) is on a floating potential and galvanically isolated from a ground potential of the ballast (101).
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: August 21, 2018
    Assignee: TRIDONIC GMBH & CO KG
    Inventors: Frank Lochmann, Markus Mayrhofer, Janosch Marquart, Simon Nigsch
  • Patent number: 10056018
    Abstract: Lighting methods and systems to enhance the browsing behaviors of shoppers in a manner intended to be primarily subconscious include illumination of a targeted area, such as a typical retail display, with a tunable spectrum lamp that slowly cycles through different illumination spectra such that color rendering of illuminated target is deliberately varied for subtle arousal of the visual senses. The illumination spectra, and the rates at which spectral conditions are changed, are both chosen as such that multi-colored objects in the targeted area change in appearance in a barely noticeable way, such that shoppers may find their visual attention redirected, seemingly at random, to a wider variety of products on display. Color spectrum changes also may be controlled in coordination with predefined packaging colors to create quasi-animation effects.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: August 21, 2018
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Joseph Laski, Charles Brunault, Seung Cheol Ryu, Rebecca Schmidt
  • Patent number: 10055947
    Abstract: A temporary task lighting system used on job sites has an alarm mode. The system may be used to provide an alarm indication using the light units of the system. The alarm indication may be cycling the lights through on and off conditions or full on and dimmed conditions. Different systems and methods may be used to activate the alarm. The alarm activation may come from a typical fire alarm switch, a button on the power supply, a button on a central control computer, or a signal from an emergency response system such as a 911 system. The disclosure also provides central control for remote drivers and ballasts. The central control allows different zones of low voltage lighting systems or different zones of low voltage lights to set up, identified, and individually controlled from a central interface.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: August 21, 2018
    Assignee: CLEAR-VU LIGHTING LLC
    Inventor: Daniel A. Lax
  • Patent number: 10034346
    Abstract: A control circuit for a light emitting diode (LED) lighting system for achieving a dim-to-warm effect is provided. The control circuit includes an LED controller, a clamp circuit coupled to a set of warm correlated-color-temperature (“CCT”) LEDs, a switch coupled to a set of cool LEDs, and a feedback circuit coupled to the clamp and the switch. The LED controller is configured to control the clamp circuit to clamp current through the set of warm LEDs based on the input current, and control the switch to switch on the set of cool LEDs responsive to the input current being greater than a first threshold level and to switch off the set of cool LEDs responsive to the input current being lower than the first threshold level. The feedback circuit is configured to divert current from the set of warm LEDs to the set of cool LEDs.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: July 24, 2018
    Assignee: Lumileds LLC
    Inventors: Yifeng Qiu, Jeroen Den Breejen
  • Patent number: 10023183
    Abstract: A method of controlling an engine speed of a hybrid vehicle including a motor that is connected to a transmission, a battery that provides a driving voltage to the motor, an engine that is selectively connected to the motor through an engine clutch, and a hybrid starter-generator (HSG) that is connected to the engine includes: comparing, when the engine is started, an external air temperature to a setting temperature; setting a battery rated derating factor based on the comparison of the external air temperature to the setting temperature; determining an output area of the HSG according to a battery voltage; and outputting an available torque of the HSG based on the set battery rated derating factor and the determined HSG output area.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: July 17, 2018
    Assignee: Hyundai Motor Company
    Inventors: Hyungseuk Ohn, Seongyeop Lim, Neungseop Oh
  • Patent number: 10015606
    Abstract: The present invention relates to an intelligent acousto-optic controller, which includes a power module, an infrared remote controller, a keyboard module, and an AC/DC constant current power module. Further, the intelligent acousto-optic controller includes an audio receiving module, an audio encoding and decoding module, a mixed audio control transmitting module, an audio input interface, an infrared receiving module, a mixed audio radio receiving and decoding control module, and a power amplifier loudspeaker module. The mixed audio control transmitting module and the mixed audio wireless receiving and decoding control module are connected wirelessly. Further, the power amplifier loudspeaker module is electrically connected to the mixed audio wireless receiving and decoding control module. The mixed audio wireless receiving and decoding control module is electrically connected to the AC/DC constant current power module. The present invention can realize acousto-optic control in an integrated way.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: July 3, 2018
    Assignee: CHANGZHOU U SHENG ELECTRONIC LTD.
    Inventor: Lijun Pan
  • Patent number: 9970601
    Abstract: A replacement light tube for replacing a fluorescent light tube includes a bulb portion extending between a first end and a second end, the bulb portion comprising a support structure, a plurality of white light emitting diodes (LEDs) and an elongate light-transmissive cover. The support structure has a first surface extending between the first end and the second end. The plurality of LEDs are supported by the first surface and arranged between the first end and the second end. The elongate light-transmissive cover extends between the first end and the second end and over the first surface of the support structure. A first end cap and a second end cap are disposed on the first end and the second end, respectively, each configured to fit with a socket for a fluorescent light tube. A power supply circuit is configured to provide power to the plurality of LEDs.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: May 15, 2018
    Assignee: iLumisys, Inc.
    Inventors: Jos Timmermans, Jean C. Raymond, John Ivey
  • Patent number: 9973096
    Abstract: Circuits and devices are described that provide power to appliances and other devices via a power correction circuit and an LLC converter, which may for example include resonant series converters and flyback converters. The circuits and devices economize on board space, part size and power start up time by separately powering up the controller circuit portion prior to powering up the LLC converter.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: May 15, 2018
    Assignee: SANKEN ELECTRIC CO., LTD.
    Inventor: Toshihiro Nakano
  • Patent number: 9941713
    Abstract: An electronic apparatus is to be electrically connected to another electronic apparatus. The electronic apparatus comprises a first contact, a memory and a processor. The first contact is a contact whose conductivity varies corresponding to a connection state with another electronic apparatus. The processor is coupled to the memory. The processor is configured to perform acquiring a value indicating the conductivity of the first contact when bringing the first contact into a contact state with another electronic apparatus and determining, based on the acquired value indicating the conductivity and a predetermined reference value, whether a connection between the electronic apparatus and another electronic apparatus is sufficient.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: April 10, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Tatsuya Shimura, Masashi Hattori
  • Patent number: 9921428
    Abstract: In some embodiments, an LCD device comprising (1) liquid crystals, (2) at least one lighting device that emits BSY-1, BSY-2, BSR, BSG-1, BSG-2 and/or BSG-3 light, (3) solid state light emitters (430-480 nm) and luminescent material (555-585 nm, 595-625 nm, or 510-560 nm), and/or (4) a light guide, a reflector and/or a light polarizer. In some embodiments, a light device comprising (1) at least one lighting device that emits BSY-1, BSY-2, BSR, BSG-1, BSG-2 and/or BSG-3 light, (2) a light guide, a reflector and/or a light polarizer, and/or (3) solid state light emitters (430-480 nm) and luminescent material (555-585 nm, 595-625 nm, or 510-560 nm).
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: March 20, 2018
    Assignee: Cree, Inc.
    Inventors: Antony Paul Van De Ven, Gerald H. Negley, Shawn Pyles
  • Patent number: 9907127
    Abstract: A converter for supplying current to a light emitting means (8, 9), the converter (6, 7; 10; 90; 100) comprising: an input (11, 12) configured to receive a direct current supply voltage; 10 at least a first controllable switch (21; 41, 43) electrically connected between the input (11, 12) and an inductor (13), and a second controllable switch (22; 42, 44) electrically connected between the input (11, 12) and the inductor (13); a first diode (14) and a second diode (15) connected in series; a first capacitance (16) connected in parallel with the first diode (14) and a second capacitance (17) connected in parallel with the second diode (15); the inductor (13) having a terminal coupled to the at least one controllable switch (21, 22; 41-44) and another terminal coupled to an anode of the first diode (14) and a cathode of the second diode (15); and a control device (20) to control the first controllable switch (21; 41, 43) and the second controllable switch (22; 42, 44), wherein the control device (20) is configu
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: February 27, 2018
    Assignee: Tridonic GmbH & Co KG
    Inventor: Jamie Kelly
  • Patent number: 9900949
    Abstract: A system and related techniques for dimming a solid-state light source are disclosed. The system may be configured to dim the output of a solid-state emitter via a combination of phase-cut dimming and high-frequency pulse-width modulation (PWM) dimming. To this end, the system may include a digital rectification module configured to generate a rectified DC power and a rectified phase-cut signal based on a phase-cut AC signal received from a phase-cut dimmer. The system further may include a microcontroller unit (MCU) configured to measure the duration of low and high states of the rectified phase-cut signal using zero-crossing digital phase-cut detection and output PWM signal(s) based, at least in part, on those measured values. The rectified DC power and PWM signal(s) may be delivered to a DC-to-DC converter, which may output DC power(s) having an intensity based on the rectified DC power and PWM signal(s), causing receiving emitter(s) to dim.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: February 20, 2018
    Assignee: LEDVANCE LLC
    Inventors: Shiyong Zhang, Aaron Ganick
  • Patent number: 9867254
    Abstract: A dimmable LED lighting system includes first, second and third types of LED light sources, and an LED driver to control the supply of current on first, second and third channels, respectively to the first, second and third types of LED light sources. The first, second and third types of LED light sources are selected according to their spectral power distribution (SPD) curves. The selected SPD curves together model a dimming color curve that is characteristic of an incandescent light source when the first, second and third types of LED light sources are separately driven with current at predefined power ratios that correspond to dimming levels over a dimming region of the dimming color curve. The dimmable LED lighting system can have a color rendering index Ra greater than 80 over the dimming region.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: January 9, 2018
    Assignee: ABL IP Holding LLC
    Inventors: Raghuram L. V. Petluri, Towfiq Chowdhury
  • Patent number: 9867265
    Abstract: A discharge lamp driving device according to one aspect of the invention includes a discharge lamp driving section configured to supply a driving current to a discharge lamp including electrodes and a control section configured to control the discharge lamp driving section. The control section controls the discharge lamp driving section such that a mixed period is provided in which a first period in which an alternating current having a first frequency is supplied to the discharge lamp and a second period in which a direct current is supplied to the discharge lamp are alternately repeated. The first frequency includes a plurality of frequencies different from one another. The control section temporally changes the length of the first period.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: January 9, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Shun Sato, Junichi Suzuki, Satoshi Kito
  • Patent number: 9857035
    Abstract: A light emitting device that emits white light includes first and second light emitting elements which have different emission peak wavelengths within a range of 440 nm to 495 nm. The device also includes a wavelength conversion material which converts a wavelength of light emitted by at least one of the first and second light emitting elements. The white light has an emission spectrum peaked at a first peak wavelength and a second peak wavelength. The first peak wavelength corresponds to the emission peak wavelength of the first light emitting element, and the second peak wavelength corresponds to the emission peak wavelength of the second light emitting element. Where a light intensity at one of the first peak wavelength and the second peak wavelength is 1, a light intensity at a bottom of a valley between the first and second peak wavelengths is 0.5 or higher but lower than 1.0.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: January 2, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Koji Omura, Toshiaki Kurachi
  • Patent number: 9835310
    Abstract: A wave-length conversion inorganic member can includes a base body and an inorganic particle layer on the base body. The inorganic particle layer can include particles of an inorganic wave-length conversion substance which is configured to absorb light of a first wave-length and to emit light of a second wave-length different from the first wave-length. The inorganic particle layer can include an agglomerate of a plurality of the particles. Each of the plurality of the particles are in contact with at least one of the other particles or the base body. A cover layer comprises an inorganic material, and the cover layer continuously covers a surface of the base body and surfaces of the particles. The inorganic particle layer has an interstice enclosed by the particles, or by the particles and one of the base body and the cover layer.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: December 5, 2017
    Assignee: NICHIA CORPORATION
    Inventors: Hiroto Tamaki, Takayoshi Wakaki, Tadao Hayashi, Yoshiki Sato, Daisuke Oyamatsu, Takafumi Sugiyama, Takao Kosugi
  • Patent number: 9818916
    Abstract: Phosphor-converted light emitting diodes comprising a blue or near-UV emitting semiconductor device, a yellow-green phosphor, and a red phosphor exhibit incandescent-like dimming behavior in that the Correlated Color Temperature of a white light output decreases with reduced brightness.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: November 14, 2017
    Inventors: Gerd O. Mueller, Regina B. Mueller-Mach
  • Patent number: 9803806
    Abstract: A replacement light tube for replacing a fluorescent light tube includes a bulb portion extending between a first end and a second end, the bulb portion comprising a support structure, a plurality of white light emitting diodes (LEDs) and an elongate light-transmissive cover. The support structure has a first surface extending between the first end and the second end. The plurality of LEDs are supported by the first surface and arranged between the first end and the second end. The elongate light-transmissive cover extends between the first end and the second end and over the first surface of the support structure. A first end cap and a second end cap are disposed on the first end and the second end, respectively, each configured to fit with a socket for a fluorescent light tube. A power supply circuit is configured to provide power to the plurality of LEDs.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: October 31, 2017
    Assignee: iLumisys, Inc.
    Inventors: Jos Timmermans, Jean C. Raymond, John Ivey
  • Patent number: 9807825
    Abstract: LED chip circuits, solid state light engines and SSL luminaires are disclosed that utilize memristors to vary LED chip emission. In different embodiments the resistance of said memristor can be varied to vary the drive signal applied to one or more LED chips, thereby varying the LED chip emission intensity. The present invention can be used in much different arrangement to vary LED chip emission, such as changing the drive signals to LED chips that experience changes in emission intensity at different temperatures or that experience emission intensity depreciation over time.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: October 31, 2017
    Assignee: CREE, INC.
    Inventor: Antony Paul Van De Ven