Current And/or Voltage Regulation Patents (Class 315/291)
  • Patent number: 10705377
    Abstract: A liquid crystal display device including a display unit, a backlight including a plurality of light sources, an LED control circuit configured to output a PWM signal (LED control signal) based on a display synchronization signal, such that the light sources are intermittently lighted, and an LED driver configured to control a drive current that is supplied to the light sources, based on the PWM signal, is provided with a monitoring control unit that is configured to perform monitoring at least one of the PWM signal, the drive current, and the display synchronization signal, as a monitoring target. When an abnormality of the monitoring target is detected, the monitoring control unit controls a waveform of the PWM signal such that the drive current that is supplied to the light sources in the backlight becomes zero.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: July 7, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasutomo Nishihara, Hideo Tohdoh, Kohichi Ohhara, Takuya Handa, Kohji Michibayashi
  • Patent number: 10700605
    Abstract: A power converter comprises a regulator, a value-supply system arranged for collecting at least one operating point of the power converter, and a predictor operative to produce updated regulator parameters (such as one or more power supply coefficients) implemented by the regulator to produce an output voltage to power a load. The updated regulator parameters are determined using a process based on the at least one collected operating point samples and predictor parameters obtained from a machine-learning process.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: June 30, 2020
    Assignee: Infineon Technologies Austria AG
    Inventors: Benjamin L. Schwabe, Jens A. Ejury, Sandro Cerato
  • Patent number: 10699629
    Abstract: A display device includes light-emitting elements, current control elements, a power supply circuit, and a voltage control circuit. The current control elements are connected in series with the corresponding light-emitting elements and control current through the light-emitting elements. The power supply circuit applies a voltage to a series circuit that includes the light-emitting elements and the current control elements. The voltage control circuit controls an output voltage of the power supply circuit to reach a voltage value determined in accordance with forward voltages of the light-emitting elements.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: June 30, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Mikihito Moribe
  • Patent number: 10691083
    Abstract: A system and approach for remote reading, setting and control of devices such as thermostats. A phone, such as a smartphone, a gateway and a cloud may be incorporated relative to interaction with the device or devices. The gateway may have a hub that has bluetooth communication capabilities with the device. The hub may be connected to a router that in turn is connected to a cloud in a wireless or wired manner. The phone may communicate with the cloud to achieve interaction with the device. The hub may also handle WiFi communications. The gateway may instead be a phone that contains an app which lets operate as a gateway for communications with the cloud. There may be one or more devices that are a part of one or more home area networks that are connected to a gateway via bluetooth and WiFi, and in turn connected to the cloud.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: June 23, 2020
    Assignee: Ademco Inc.
    Inventors: David J. Emmons, Ajay Pai, Soumitri Kolavennu
  • Patent number: 10687397
    Abstract: Systems and methods for dimming control using TRIAC dimmers are provided. An example apparatus for a power conversion system includes: a process-and-drive component configured to receive an input signal and output a drive signal to a switch to affect a current that flows through a primary winding of a power conversion system. The input signal includes a first pulse associated with a first input period and a second pulse associated with a second input period. The drive signal is associated with a first modulation period for the first input period and a second modulation period for the second input period. The process-and-drive component is further configured to: determine the first modulation period for the first input period; change the drive signal between a first logic level and a second logic level at a modulation frequency during the first modulation period; determine the second modulation period for the second input period.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: June 16, 2020
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Liqiang Zhu, Jiqing Yang, Zhuoyan Li, Lieyi Fang
  • Patent number: 10685613
    Abstract: A liquid crystal display (LCD) device, a controller thereof, and a driving method thereof are provided. The LCD device can include a liquid crystal display panel configured to display images, on which data lines and gate lines are disposed, and subpixels defined by the data lines and the gate lines are arranged; a gate driver configured to supply a scanning signal to the gate lines; a data driver configured to supply a data voltage to the data lines; and a controller configured to control the gate driver and the data driver, in which the LCD device operates in a first type of inversion when a driving frequency is in a first driving frequency range, and the LCD device operates in a second type of inversion different from the first type of inversion when the driving frequency is in a second driving frequency range different from the first driving frequency range.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: June 16, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: HwiJe Cho, SeungHun Han, Jewon Park, ChulSang Shin, JeongGeun Lee, JaeKwang Lee
  • Patent number: 10681789
    Abstract: Methods, systems, and apparatus are described herein for adjusting one or more lighting properties based on skill level of one or more players of a game. In various embodiments, (502) a skill disparity between at least two players of a game may be identified (502). A lighting scheme may be selected (504) to reduce an impact the skill disparity has on an outcome of the game. One or more light sources (104, 304) may be operated (508) to emit light in accordance with the lighting scheme.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: June 9, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Harry Broers, Ruben Rajagopalan
  • Patent number: 10678092
    Abstract: Aspects of the subject technology relate to display circuitry such as backlight control circuitry for operating parallel strings of light-emitting diodes (LEDs). A voltage supply circuit of the backlight control circuitry provides a common supply voltage to the strings of LEDs. Headroom control circuitry samples a residual voltage at the end of each string, determines a minimum of the residual voltages, and provides feedback, based on the determined minimum voltage, to the voltage supply circuit. A headroom control feedback loop may be provided including sampling lines coupled to the second end of each string of LEDs for sampling a residual voltage of each string. Headroom control circuitry may modify the supply voltage based on the minimum residual voltage. Sample-and-hold circuitry may be provided that holds the sampled residual voltages until the voltage supply circuit is ready for an update.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: June 9, 2020
    Assignee: APPLE INC.
    Inventors: Ji Yeoul Ryoo, Asif Hussain, Jingdong Chen, Mohammad J. Navabi-Shirazi, Yanhui Xie
  • Patent number: 10674586
    Abstract: The present invention discloses a universal LED tube including a metal pin, an automatic dividing frequency network, a high-frequency driver, a low-frequency driver, a isolation circuit and a LED lighting set. The universal LED tube has the advantages of strong universality and high level of safety.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: June 2, 2020
    Assignee: JIANGXI JINGKE ELECTRONICS CO., LTD.
    Inventors: Shuxing Deng, Shexi Zhang
  • Patent number: 10667374
    Abstract: The invention relates to a controlled device (1, 1?), a system (25, 25?) comprising such controlled device (1, 1?) and a controller device (21), a method for setting up such controlled device (1, 1?) and a software product for a set up processor (3, 3?) of such controlled device (1, 1?). In order to allow the controlled device (1, 1?) to persistently stay within the framework of the system (25, 25?) over its power cycles while avoiding or at least reducing a need for a costly element like a NVRAM on the side of the controlled device (1, 1?). Rather than providing costly NVRAM in the controlled device (1, 1?), the controlled device (1,1?) is just provided with fixed information which allows the controlled device (1,1?) to receive or obtain the variable control data from the controller device (21) as an outside source.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: May 26, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Antonie Leonardus Johannes Kamp, Octavio Alejandro Santana Arnaiz, Leendert Teunis Rozendaal
  • Patent number: 10667343
    Abstract: A solid state lighting platform comprised of one or more modular lighting instruments each of which are comprised of an enclosure, driver/logic module(s) governed by a microprocessor and a unique array of emitter boards consisting of a multitude of lighting elements. The lighting instruments may joined together using magnets embedded in the enclosure(s) and receive control instructions from a smart device or any other light on the wired or wireless network. A unique algorithm and look up table allow flicker free dimming and highly accurate color temperature tuning from the microprocessor.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: May 26, 2020
    Assignee: LIGHTICIANS INC.
    Inventors: Richard P. Ulivella, Timothy P. Duff
  • Patent number: 10661047
    Abstract: A light-irradiating apparatus which emits light for activating a body is provided. The light-irradiating apparatus includes a blue light source, a white light source, and a controller. The controller controls the white light source and the blue light source, and adjusts irradiation intensities of light emitted by the blue light source and the white light source. The controller causes the white light source to continuously maintain an on state and causes the blue light source to repeat an on state and an off state. The controller causes a sum of the irradiation intensity of the light which is emitted by the white light source and the irradiation intensity of the light which is emitted by the blue light source to be greater than or equal to a biological effect threshold at which light produces an effect of activating the body.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: May 26, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Ayumu Sato
  • Patent number: 10666060
    Abstract: A load control system may include load control devices for controlling power provided to an electrical load. The load control devices may include a control-source device and a control-target device. The control-target device may control the power provided to the electrical load based on digital messages received from the control-source device. A user device may discover load control devices when the load control devices are within an established range associated with the user device. The user device and the load control devices may communicate via a wireless communications module. The established range may be adjusted based on the configurable transmit power of the user device or the wireless communications module associated with the user device. A discovered control-target device may be associated with a control-source device to enable the control-target device to control the power provided to the electrical load based on digital messages received from the control-source device.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: May 26, 2020
    Assignee: Lutron Technology Company LLC
    Inventors: Jordan H. Crafts, William Bryce Fricke, Stephen M. Ludwig, Jr., Jonathan T. Lenz, Bryan Robert Barnes, Kyle Thomas Barco
  • Patent number: 10659700
    Abstract: The present disclosure provides a mobile terminal and a method for filling light for same, and relates to the field of electronic technologies. The method includes: upon receiving an activating instruction for a target camera, activating the target camera; displaying an image acquired by the target camera on a display screen which is located on a surface different from a surface where the target camera is located; detecting brightness of present ambient light, and in response to that the brightness of the present ambient light is less than a preset brightness threshold, illuminating the display screen on the same surface where the target camera is located.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: May 19, 2020
    Assignees: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY CO., LTD., HISENSE USA CORPORATION, HISENSE INTERNATIONAL CO., LTD.
    Inventors: Peng Jiang, Xing Yang, Qi He
  • Patent number: 10660169
    Abstract: Provided is control method and a lighting system having a plurality of lighting elements that includes a power supply for supplying power, a lighting driver having a microcontroller and configured to receive power from the power supply and output power to the plurality of lighting elements for operation thereof, a control system in electrical or wireless communication with the microcontroller, and configured to communicate with the microcontroller, to control an operational mode of the plurality of lighting elements via the lighting driver, wherein the microcontroller is configured to transmit an output reference signal as a control signal, and a peak detection circuit that receives the output reference control signal from the microcontroller, and generates a standby control signal from the output reference control signal received, to thereby operate the plurality of lighting elements in an on or standby mode.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: May 19, 2020
    Assignee: CURRENT LIGHTING SOLUTIONS, LLC
    Inventors: Kevin Andrew Candow, Jeffrey Glenn Felty
  • Patent number: 10660168
    Abstract: A lighting device includes light emitting element groups (HSB) including a light emitting element group (HS2) that emits light when being applied with a voltage at a light emission reference voltage (VH2), and a light emitting element group (HS12) that emits light when being applied with a light emission reference voltage (VH12) higher than the light emission reference voltage (VH2), the light emitting element groups (HSB) emitting light when being applied with a voltage equal to or higher than a light emission reference voltage (VHa); a semiconductor chip (IC1) including a light emission control unit (HC1) arranged to perform light emission control to cause light emission of a light emitting element group (HS) if a drive voltage (Vk) is higher than the light emission reference voltage (VHa), and to perform light emission stop control to stop the light emission if the drive voltage (Vk) is lower than the same; and a semiconductor chip (IC2) including a light emission control unit (HC2) arranged to perform lig
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: May 19, 2020
    Assignee: Rohm Co., Ltd.
    Inventors: Noboru Takizawa, Masaaki Nakayama
  • Patent number: 10652972
    Abstract: In response to determining that the line power source for a subset or all member devices of a lighting control group is interrupted, an emergency luminaire enters an emergency mode (EM) active state by controlling a light source, via a driver circuit, to continuously emit emergency illumination lighting. Upon entering the EM active state, the emergency luminaire transmits, via a wireless lighting control network, an EM active message to a lighting control group repeatedly at a predetermined time interval. Emergency luminaire receives, via the wireless lighting control network, an EM exit message from another member device indicating to exit the EM active state. In response to receiving the EM exit message from the other member device, the emergency luminaire exits the EM active state by controlling the light source, via the driver circuit, to discontinue emitting the emergency illumination lighting.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: May 12, 2020
    Assignee: ABL IP HOLDING LLC
    Inventors: Timothy Mark Norton, Scott Ingraham, Gomez Sam Selvaraj
  • Patent number: 10651653
    Abstract: A load control system may comprise load control devices for controlling respective electrical loads, and a system controller operable to transmit digital messages including different commands to the load control devices in response to a selection of a preset. The different commands may include a preset command configured to identify preset data in a device database stored at the load control device and/or a multi-output command configured to define the preset data for being stored in the device database. The system controller may decide which of the commands to transmit to the load control devices in response to the selection of the preset.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: May 12, 2020
    Assignee: Lutron Technology Company LLC
    Inventors: Brian Michael Courtney, Timothy Gill, Sriram Gopalakrishnan, Roshni Ashwin Shah, Vidya Sukumar, Mark S. Taipale, Mark Yorgey
  • Patent number: 10652981
    Abstract: A method may include, based on a plurality of duty cycles each associated with a respective one of a plurality of LEDs, determining a first set of drive schemes such that each drive scheme is associated with a respective one of the plurality of LEDs and is dependent on the duty cycle associated with the respective one of the plurality of LEDs. The method further includes driving each of the plurality of LEDs in accordance with the associated drive scheme of the first set in at least one drive cycle. Each of the plurality of drive schemes includes one or more on-times each having a phase and a duration. The method may include driving each of the plurality of LEDs in an on-state or an off-state dependent on the respective drive scheme and determining the drive scheme dependent on the drive scheme of another one of the plurality of LEDs.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: May 12, 2020
    Assignee: Infineon Technologies AG
    Inventors: Adolfo De Cicco, Rosario Chiodo, Davide Ghedin, Andrea Scenini
  • Patent number: 10642297
    Abstract: An online voltage adjustment circuit for a board power supply, where a first voltage division circuit is coupled in parallel to a first bias resistor, a second voltage division circuit is coupled in parallel to a second bias resistor, and a detection chip obtains an initial output voltage of the board power supply. Based on the initial output voltage and a preset voltage, a control chip controls a first switch on the first voltage division circuit to be on or off, and a second switch on the second voltage division circuit to be on or off. As a result, a feedback value of a feedback pin of the board power supply changes, and then an output voltage of the board power supply changes, thereby adjusting the output voltage of the board power supply.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: May 5, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yunwu Peng, Qi Peng, Xuejing Zhang
  • Patent number: 10645769
    Abstract: A load regulation device, such as an LED driver, may be configured to control the intensity of a light source based on an analog control signal and a preconfigured dimming curve. The LED driver may sense a magnitude of the analog control signal and determine a new low-end and/or high-end control signal magnitude that falls outside of the input signal range of the dimming curve. The LED driver may rescale the preconfigured dimming curve according to new low-end and/or high-end control signal magnitudes and dim the light source based on the rescaled dimming curve. Multiple LED drivers controlled by the same analog control signal may communicate with each other regarding the magnitude of the analog control signal sensed by each LED driver, and match their target intensity levels despite sensing different analog control signal. A controller may be provided to coordinate the operation of the multiple LED drivers.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: May 5, 2020
    Assignee: Lutron Technology Company LLC
    Inventors: Matthew Knauss, Christopher G. Udall
  • Patent number: 10645770
    Abstract: Feedback is received from a plurality of devices. External data is also received. Statistical patterns of the plurality of devices are determined based on the feedback. A policy is determined based on the statistical patterns, the feedback, and the external data. The policy may include a set of rules dictating the operation of each of the plurality of devices and reducing energy consumption at the plurality of devices. Control data based on the policy is transmitted to the plurality of devices. The control data may be operative to transform the operation of the plurality of devices according to the set of rules.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: May 5, 2020
    Assignee: Signify Holding B.V.
    Inventors: Ashok Deepak Shah, David Diehl Roberts, III
  • Patent number: 10637359
    Abstract: Power converter controllers, power converters and corresponding methods are provided. A power converter controller may have a first input for receiving an indication of an output of the power converter and a second input operative to receive a supply voltage. A control circuit of the power converter controller (10) controls a primary side switch of the power converter based on both the supply voltage and the indication.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: April 28, 2020
    Assignee: Infineon Technologies Austria AG
    Inventors: Marcus Schaemann, Tiam Poh Lau
  • Patent number: 10636385
    Abstract: A display apparatus and a controlling method thereof are provided. The display apparatus may include: a display panel that displays a screen; a light source disposed at one side of the display panel; an audio input that receives an audio signal; and a processor that flickers the light source in response to the received audio signal.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: April 28, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-joon Jung, Tae-yeon Won
  • Patent number: 10630170
    Abstract: A Power Factor Correction (PFC) circuit includes an oscillator circuit. The oscillator circuit receives a valley detect signal indicating a zero current condition, determines a blanking time according to an operational cycle of the PFC circuit, and determines to initiate the operational cycle according to the valley detect signal and the blanking time. Determining the blanking time includes selecting one of a plurality of predetermined blanking times according to a count of operational cycles of the PFC circuit. The PFC circuit may operate in a Boundary Conduction Mode or a Discontinuous Conduction Mode depending on whether a charge-discharge period is greater than the blanking time. The PFC circuit may determine, according to its output voltage, a first duration of a charging period, determine a delay time according to zero current times of previous operational cycles, and extend the first duration of the charging period by the delay time.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: April 21, 2020
    Assignee: FAIRCHILD SEMICONDUCTOR CORPORATION
    Inventors: Jintae Kim, Sangcheol Moon, Hangseok Choi
  • Patent number: 10631389
    Abstract: A wireless battery-powered daylight sensor for measuring a total light intensity in a space is operable to transmit wireless signals using a variable transmission rate that is dependent upon the total light intensity in the space. The sensor comprises a photosensitive circuit, a wireless transmitter for transmitting the wireless signals, a controller coupled to the photosensitive circuit and the wireless transmitter, and a battery for powering the photosensitive circuit, the wireless transmitter, and the controller. The photosensitive circuit is operable to generate a light intensity control signal in response to the total light intensity in the space. The controller transmits the wireless signals in response to the light intensity control signal using the variable transmission rate that is dependent upon the total light intensity in the space. The variable transmission rate may be dependent upon an amount of change of the total light intensity in the space.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: April 21, 2020
    Assignee: Lutron Technology Company LLC
    Inventors: James P. Steiner, Greg Edward Sloan, Nathan A. Boring
  • Patent number: 10629577
    Abstract: Direct-bonded LED arrays and applications are provided. An example process fabricates a LED structure that includes coplanar electrical contacts for p-type and n-type semiconductors of the LED structure on a flat bonding interface surface of the LED structure. The coplanar electrical contacts of the flat bonding interface surface are direct-bonded to electrical contacts of a driver circuit for the LED structure. In a wafer-level process, micro-LED structures are fabricated on a first wafer, including coplanar electrical contacts for p-type and n-type semiconductors of the LED structures on the flat bonding interface surfaces of the wafer. At least the coplanar electrical contacts of the flat bonding interface are direct-bonded to electrical contacts of CMOS driver circuits on a second wafer.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: April 21, 2020
    Assignee: Invensas Corporation
    Inventors: Min Tao, Liang Wang, Rajesh Katkar, Cyprian Emeka Uzoh
  • Patent number: 10621942
    Abstract: A display power circuit is provided. The display power circuit includes a power supply circuit that receives an input voltage and generates an output voltage to power a display. A power switching device couples the output voltage from the power supply circuit to provide a display voltage for the display. A monitor circuit generates a shut down signal based on a change of the output voltage relative to the input voltage exceeding a predetermined threshold indicating a short circuit condition of the display voltage. A control circuit disables the power switching device based on the shut down signal if the short circuit of the display voltage is detected.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 14, 2020
    Assignee: Texas Instruments Incorporated
    Inventors: Chenjie Ruan, Zheren Lai, Sang Kwon Kim, Yonghua Zhou
  • Patent number: 10619833
    Abstract: This present invention provides a Curved LED tubular lamp, comprising a Curved lamp tube as mentioned above, wherein the first straight tube has a first inner wall and a first outer wall opposite to the first inner wall along the longitudinal axis of the first straight tube, and the second straight tube has a second inner wall and a second outer wall opposite to the second inner wall along the longitudinal axis of the second straight tube, and the rear supporter has a third inner wall and a third outer wall opposite to the third inner wall along the axis of the rear supporter, whereby the first inner wall, the third inner wall and the second inner wall is defined as an inner area, and the first outer wall, the third outer wall and the second outer wall is defined as an outer area; a LED light board installed on the inner area of the Curved lamp tube; two lamp caps respectively capped on the front ends of the first straight tube and the second straight tube, and connected with each other by a first front suppo
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: April 14, 2020
    Inventors: Wentao Yao, Weijun Zhu, Zhaosong Lin, Zhi Guo
  • Patent number: 10616970
    Abstract: An emergency LED lighting system maintains power to an LED lighting source based on measured voltages and currents provided to the LED lighting source; rolls back or decreases power provided to an LED lighting source over time in order to increase the amount of time the battery can power the LED lighting source; executes a soft start procedure, such that the power provided to the LED lighting source is gradually ramped up during activation of the LED lighting sources; identifies a type of battery coupled to the emergency LED lighting system; cycles the emergency LED lighting system between charging mode and standby mode to reduce power consumption over a window of time; detects AC power or an absence of AC power; and/or uses a status LED to communicate information about the emergency LED lighting system with a remote device.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: April 7, 2020
    Assignee: ABL IP Holding LLC
    Inventors: James Clarence Johnson, Dean W. Mavis, Antonio Marques, Gunjan P. Patel, Ray Altenburger
  • Patent number: 10616984
    Abstract: A light-emitting diode (LED) lighting device includes (i) a selector circuit that sequentially and cyclically selects a plurality of LED loads one by one, the plurality of LED loads respectively emitting light as a result of being selected, and (ii) a control circuit that controls the selector circuit to cause an intermediate color to be produced by successively generating frames, each frame being a temporal combination of at least one first cycle period and at least one second cycle period, the at least one first cycle period generating a first mixed emission color, and the at least one second cycle period generating a second mixed emission color different from the first mixed emission color.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: April 7, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Naoki Takeguchi, Shigeru Ido, Hiroshi Kido
  • Patent number: 10616982
    Abstract: A single live-wire power fetching system capable of preventing flickering and enhancing power fetching efficiency, that includes a single live-wire power fetching switch module, a High Side Buck ac/dc, and a multifunction rectifying unit. The single live-wire power fetching module is provided with a live-wire input end and a live-wire output end, connected in series to a single live-wire to perform single live-wire power fetching, and to supply power for normal operation of circuits in the single live-wire power fetching switch module. The High Side Buck ac/dc is used to provide part of power for single live-wire power fetching, with input end of the High Side Buck ac/dc connected in parallel to the single live-wire power fetching switch module through multifunction rectifying unit, and with output end of the High Side Buck ac/dc connected to the single live-wire power fetching switch module to provide power.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: April 7, 2020
    Assignee: LOONG YEE INDUSTRIAL CORP., LTD.
    Inventor: Chi-Jen Wang
  • Patent number: 10610285
    Abstract: An electrosurgical generator is provided. The electrosurgical generator includes at least one converter configured to output a DC waveform and a nonlinear carrier control current. At least one boost inverter is coupled to the at least one converter and is configured to convert the DC waveform to generate at least one electrosurgical waveform. At least one inductor is connected in series with the at least one converter and at least one boost inverter and is configured to output an inductor current. A controller is coupled to the at least one converter and the at least one boost inverter and is configured to maintain the inductor current at a predetermined value by controlling a pulse duration of a duty cycle of the at least one converter based on a comparison of inductor current and the nonlinear control current.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: April 7, 2020
    Assignee: COVIDIEN LP
    Inventors: Daniel Friedrichs, James A. Gilbert
  • Patent number: 10615737
    Abstract: A system for a power switch of a multiphase power converter coupled to an inductive load including a test controller, a voltage sampling circuit, a processing circuit, and a converter. A test pulse is applied to power switches of the converter to generate a test current through the inductive load, which forward biases a body diode of a power switch during a freewheel portion after the test pulse is completed. The voltage across the body diode is sampled during the freewheel portion, and the voltage samples are converted to a voltage value and a slope value. The voltage and slope values are converted to an estimated temperature value based on a characterization of the inductive load and the body diode. The conversion may be performed by a lookup table that stores an estimated temperature value for each unique combination of the voltage and slope values.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: April 7, 2020
    Assignee: NXP USA, Inc.
    Inventors: Matej Pacha, Branislav Zigmund, Carlos Vazquez Goyarzu, Hubert Martin Bode, Patrik Varecha, B{hacek over (r)}etislav Zuczek
  • Patent number: 10609789
    Abstract: A chained flashlight system includes: plural flashlights; plural lighting control devices that control lighting of the plural flashlights, respectively; a communication wire; and a traffic control device. The plural lighting control devices include receiving units, controlling units, activating units, and power supply units, respectively and are coupled to the traffic control device by the same communication wire. The traffic control device simultaneously sends an activating signal to the plural lighting control devices via the communication wire. The receiving units receive the activating signal. The controlling units activate the activating units on the basis of the time condition from the reception of the activating signal to the activation of the activating units, set for the flashlights, respectively. When the power supply units are turned ON in an activated state of the activating units, respectively, the flashlights are lit by a lighting signal from the traffic control device, respectively.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: March 31, 2020
    Assignee: HotaluX, Ltd.
    Inventor: Norimasa Mizobe
  • Patent number: 10609797
    Abstract: An LED load is specified to be driven at a first voltage level for maximum brightness. A driver for the LED load determines a first current level consumed by the LED load while the first voltage level is applied to the LED load. Information is received to set a brightness level of the LED load and a second current level is calculated based on the first current level and the information received. Electrical power is then provided to the LED load at the second current level. A second voltage level of the electrical power provided to the LED with the second current level is unregulated and is less than the first voltage level.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: March 31, 2020
    Inventor: Karl S Jonsson
  • Patent number: 10608020
    Abstract: A display panel includes a substrate and a plurality of display dies. The display die is disposed on the substrate and includes a first source pad, a second source pad, a first common pad, a second common pad, a first gate pad, a second gate pad, a first transistor, a first LED, and a second LED. The first and second source pads are respectively disposed on the first and second sides of a circuit region. The first common pad and the first gate pad are disposed on the third side of the circuit region. The second common pad and the second gate pad are disposed on the fourth side of the circuit region. The first transistor is electrically connected to the first gate pad and the first common pad. The first and second LEDs are electrically connected between the first source pad and the first transistor.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: March 31, 2020
    Assignee: Au Optronics Corporation
    Inventors: Cheng-Te Lin, Ya-Hua Lee
  • Patent number: 10609781
    Abstract: The disclosed technology relates to a lighting strobe system that utilizes an ambient light sensor to detect an intensity and color temperature of ambient light to set or adjust an intensity and color temperature of light to be emitted by a first array of LEDs and a second array of LEDs. The first array of LEDs may include warm color temperature LEDs having a color temperature of 2400-4000 Kelvin. The second array of LEDs may include cool color temperature LEDs having a color temperature of 4000-8000 Kelvin.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: March 31, 2020
    Assignee: LITRA, LLC
    Inventors: Wei Cao, Scott Gant
  • Patent number: 10609775
    Abstract: The present disclosure relates to decorative lamps, and in particular to a three-line four-way light string and control system thereof. The three-line four-way light string and control system thereof comprises signal lines L1, L0, L2, a plurality of LED lamps are connected between the signal line L1 and the signal line L0 in parallel, and a plurality of LED lamps are connected between the signal line L2 and the signal line L0 in parallel. The three-line four-way light string and control system thereof provided by the present disclosure can be produced by utilizing a full mechanization manner so as to have high yield and accuracy, save raw material and energy consumption, have a little pollution and be applicable to mass production.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: March 31, 2020
    Assignees: Dongguan Yuanxiang Lamp Technology Co., Ltd.
    Inventors: Yingchuan Zhang, Jiajun Wu, Jiajin Jiang
  • Patent number: 10609777
    Abstract: A load control device for an electrical load is configured to operate in a normal mode and a burst mode to adjust the amount of power delivered to the electrical load. The load control device comprises a control circuit that operates in the normal mode to regulate an average magnitude of a load current conducted through the load between a maximum rated current and a minimum rated current. During the normal mode, the control circuit controls the operating period of a load regulation circuit between a high-end operating period and a low-end operating period. The control circuit operates in the burst mode to regulate the average magnitude of the load current below the minimum rated current. During the burst mode, the control circuit adjusts the low-end operating period to be less than or equal to a minimum on time of the load regulation circuit.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: March 31, 2020
    Assignee: Lutron Technology Company LLC
    Inventors: Robert D. Stevens, Jr., Matthew R. Zartman
  • Patent number: 10602589
    Abstract: Disclosed are systems and methods for adjusting environmental conditions based on automatically and manually generated requests. A commissioned unit comprising at least one IP luminaire (140, 150), transmits a signal comprising one or more identification codes. The signal may be, for example, a coded light signal. An environment control device (160) receives the signal, detects user input indicating one or more preferred environmental conditions, and transmits an environment control request comprising the one or more preferred environmental conditions. An environment manager module (110) receives the environment control request, generates an environment control command using the control request, and transmits the environment control command to one or more commissioned units to alter environmental conditions in a space in accordance with the user input.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: March 24, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Mark Henricus Verberkt, Jurgen Mario Vangeel, Lokesh Narayan, Wijnand Johannes Rietman, Simon Dingle, Jules Martinus Adrianus Gerardus De Laat, Sanjay Bhat, Tony Petrus Van Endert, Michael Petrus Franciscus Verschoor, Petrus Johannes Lenoir
  • Patent number: 10601244
    Abstract: In embodiments of the present invention improved capabilities are described for providing intelligent power control in response to an external power interruption, causing a processor is in an electrical fixture to interrogate an external power control switch to gain an understanding of the switch's state, where prior to the external power interruption the electrical fixture may be powered by external power and where external power may be connected and disconnected by a user of the switch. In the event that the switch's state is determined to be such that it would normally pass power to the electrical fixture, the processor causes the electrical fixture to operate using a backup power supply. In the event that the switch's state is determined to be such that it would normally not pass power to the electrical fixture, the processor causes the electrical fixture to act as if the user of the switch has intentionally removed power.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: March 24, 2020
    Assignee: A9.Com, Inc.
    Inventors: Michael V. Recker, David B. Levine
  • Patent number: 10595383
    Abstract: A portable apparatus is provided for configuring and/or programming lighting drivers without mains power application. An apparatus housing comprises first and second connectors and an antenna. During a first mode wherein the first connector is coupled to an external computing device, a battery receives and stores power therefrom, and a first controller receives and stores at least driver configuration settings therefrom. When the external device is disconnected the battery powers the apparatus, which polls a transceiver circuit to detect a driver antenna proximate to the apparatus antenna. The apparatus housing is configured to mount to a luminaire comprising the detected driver, wherein the second connector is coupled to the driver and the battery provides power to a driver controller. The first controller also during this second mode transfers the stored at least driver configuration settings to the driver controller via the operably proximate antennae, for example via bidirectional negotiations therewith.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: March 17, 2020
    Assignee: Universal Lighting Technologies, Inc.
    Inventors: Stephen D. Mays, II, Reggie Anglin, John J. Dernovsek, Scott Price
  • Patent number: 10595368
    Abstract: A LED driving circuit and method for balancing efficiency and a power factor. The circuit comprises a voltage input module, an LED load, a constant current control module and a current turn-off slope control module for adjusting the turn-off slope of the current flowing through the LED load, such that a compromise between efficiency and power factor is achieved. When an input voltage is higher than a setting voltage, the current flowing through the LED load is turned off, such that the power consumption is reduced; in addition, the efficiency and power factor are balanced by adjusting the turn-off slope of the current. According to the present invention, a compensation capacitor is used to control the average current in an alternating current period and to limit peak current, thereby implementing constant power output within a wide range of input voltage.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: March 17, 2020
    Assignee: CHINA RESOURCES POWTECH (SHANGHAI) CO., LTD.
    Inventors: Jun Liu, Quanqing Wu, Shengsheng Lu, Guocheng Li
  • Patent number: 10588208
    Abstract: Apparatus and associated methods relate to synchronizing a plurality of lighting display controllers so as to temporally coordinate a corresponding plurality of lighting displays controlled thereby. A clock or timer is configured to generate a time sequence of timing signals, to which the plurality of lighting display systems synchronize themselves. Each of the plurality of lighting display systems display a first of a time sequence of spatial illumination patterns in response to receiving, from the transmitter, a signal indicative of a temporal start of the synchronized plurality of lighting displays. Each of the plurality of lighting display systems displays a subsequent spatial illumination patterns in response to receiving, from the transmitter, a subsequent timing signal.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: March 10, 2020
    Assignee: Seasons 4, Inc.
    Inventors: Jason Loomis, Jared Everline, Chris Dalio
  • Patent number: 10582582
    Abstract: A control system for a stadium lighting system comprising a plurality of luminaires installed within the stadium to illuminate a pitch within the stadium in accordance with a light plan containing aiming information for each luminaire is disclosed. The control system comprises a data storage device storing the light plan and a controller communicatively coupled to the data storage device, the controller being responsive to object tracking information for an object travelling across the pitch. The controller is adapted to determine a direction of travel of the object from the object tracking information; evaluate the aiming information for each luminaire to identify if at least one luminaire is arranged to generate a luminous output in an aiming direction coinciding with said direction of travel; and generate a dimming level adjustment signal for the at least one identified luminaire to reduce the intensity of said luminous output.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: March 3, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Harry Broers, Willem Peter Van Der Brug, Ruben Rajagopalan
  • Patent number: 10582594
    Abstract: A lighting system includes a wireless controller, luminaires each configured to communicating with the wireless controller, and a storage. The wireless controller classifies a first luminaire among the luminaires, which is able to communicate using first transmission power, into a first group and stores the first luminaire on the storage, and classifies a second luminaire among the luminaires, which is able to communicate using second transmission power greater than the first transmission power, into a second group and stores the second luminaire on the storage.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: March 3, 2020
    Assignee: PANASONIC INTELLECUTAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kohji Hiramatsu, Tatsumi Setomoto, Tomokazu Yamamoto, Tamotsu Ando, Hajime Ozaki
  • Patent number: 10569695
    Abstract: A converter controller controls a switching converter. A current detection circuit generates a current detection signal VCS that corresponds to a coil current IL of the switching converter. An error amplifier amplifies the difference between the current detection signal VCS and an analog signal VADIM that indicates a current to be supplied to a semiconductor light source, so as to generate an error signal VERR. A hysteresis comparator compares the current detection signal VCS with an upper threshold signal VTHH and a lower threshold signal VTHL determined according to the error signal VERR, and generates a control pulse SCNT that corresponds to a comparison result. A driver drives a switching transistor according to the control pulse SCNT.
    Type: Grant
    Filed: February 4, 2018
    Date of Patent: February 25, 2020
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki Ichikawa, Satoshi Kikuchi
  • Patent number: 10575379
    Abstract: A system and method for controlling a multiplicity of luminaries connected to a single wire pair. The luminaries contain minimum circuitry to allow dimming and color tuning by pulses on the wire pair without the need for a separate control wire or control communication bus or network. A single luminary can be color tuned to many different colors as well as dimmed and turned on and off. A driver module drives the wire pair and receives commands over a network The driver module contains a pulse generation circuit that generates and applies pulses to the two-wire output. The amplitude of some the pulses control color of the luminary by selecting different LEDs in the luminary to light, while other pulses control brightness.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: February 25, 2020
    Inventors: Hamid Pishdadian, Jr., Thomas A. Spinelli, Akram A. Khalis
  • Patent number: 10568173
    Abstract: A dimmer circuit is used in an LED lighting system which includes a power supply circuit and a lamp. The power supply circuit is configured to provide an AC voltage. The lamp is coupled to the power supply. The dimmer circuit is configured to adjust the brightness of the lamp according to a dimming signal without the lamp conducting a bleeder current during each cycle of the AC voltage.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: February 18, 2020
    Assignee: Chiplight Technology (Shenzhen) Co., Ltd.
    Inventors: Horng-Bin Hsu, Pen-Li Chou