Current And/or Voltage Regulation Patents (Class 315/291)
  • Patent number: 10354839
    Abstract: A power supply system includes a power converter configured to generate a high-frequency power signal and be connected to a load to supply a plasma process or gas laser process with power. The power converter includes at least one amplifier stage having first and second amplifier paths each having an amplifier. The first and second amplifier path are connected to a phase-shifting coupler unit that is configured to couple phase-shifted output signals from the first and second amplifier paths to form the high-frequency power signal. At least one amplifier of the first and second amplifier paths includes a field effect transistor implemented in a semiconductor device with a semiconductor structure having a substantially layered construction, and the semiconductor device includes a channel, a current flowing in the channel substantially in parallel with layers of the semiconductor structure.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: July 16, 2019
    Assignee: TRUMPF Huettinger GmbH + Co. KG
    Inventors: Alexander Alt, Andre Grede, Daniel Gruner, Anton Labanc
  • Patent number: 10356857
    Abstract: A light emitting diode (LED) lighting system includes a power factor correction (PFC) controller that determines at least one power factor correction control parameter from phase delays of a phase modulated signal. In at least one embodiment, a peak voltage of the phase modulated signal is a PFC control parameter used by the PFC controller to control power factor correction and generation of a link voltage by a PFC LED driver circuit. The phase delays are related to a peak voltage of the phase modulated signal. Thus, in at least one embodiment, detecting the phase delay in one or more cycles of the phase modulated signal allows the PFC controller to determine the peak voltage of the phase modulated signal.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: July 16, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventor: John L. Melanson
  • Patent number: 10349485
    Abstract: The present invention is directed to a control assembly comprising control units connected in series along with a respective control method, which allow for the provision of a particularly efficient data transfer, in particular for light-emitting diode control units. The present invention is also directed to a respective protocol causing control units to carry out the respective method steps.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: July 9, 2019
    Assignee: Inova Semiconductors GmbH
    Inventor: Roland Neumann
  • Patent number: 10347178
    Abstract: A pixel driving circuit is disclosed, including: a driving switch, connected between a driving power source and an OLED; a first switch, connected to the gate of the driving switch for inputting a first control signal; a control circuit, connected to the source of the driving switch, for inputting a second control signal and outputting a compensation current to compensate threshold voltage drift of the driving switch; a storage unit, connected between the gate and source of the driving switch, for storing a compensation voltage of compensation current compensating the driving switch; the drain of first switch being for inputting a data signal, the storage unit being for storing a data voltage generated by the data signal and applying the compensation voltage and data voltage to the driving switch. A display panel and pixel driving method are also disclosed.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: July 9, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Yuying Cai
  • Patent number: 10349477
    Abstract: A double-capped LED lamp operates on an electronic ballast for a low-pressure discharge lamp. The lamp has a first lamp cap having at least one first lamp connection, a second lamp cap having at least one second lamp connection, and an LED driver unit, which is electrically coupled between the first lamp connection and the second lamp connection, for activating a plurality of LEDs on the basis of a lamp voltage supplied by the electronic ballast between the first lamp connection and the second lamp connection in a first operating state. The lamp comprises a switching element for the galvanic separation of the first lamp connection from the LED driver unit in a second operating state, and an activation device for switching at least from the second operating state into the first operating state according to the lamp voltage.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: July 9, 2019
    Assignee: LEDVANCE GMBH
    Inventors: Arwed Storm, Xusheng Yang, Andreas Mitze, Peter Hummel
  • Patent number: 10342095
    Abstract: An input voltage stabilization circuit for a rear combination lamp includes: an optical output unit including a plurality of Organic Light Emitting Diodes (OLEDs); a voltage converter; and a feedback unit. The voltage converter is configured to supply an output voltage for driving the plurality of OLEDs by converting a first voltage supplied by a vehicle battery to the output voltage, the output voltage being different from the first voltage. The feedback unit is configured to provide, as feedback to the voltage converter, information regarding a maximum voltage value for the plurality of OLEDs. The voltage converter is further configured to adjust the output voltage based on the information provided as feedback by the feedback unit regarding the maximum.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: July 2, 2019
    Assignee: LG Electronics Inc.
    Inventors: Sanghyun Park, Hongkwon Kim, Sangphil Byun
  • Patent number: 10330779
    Abstract: A laserbeam light source is controlled to avoid light sensitive regions around the laserbeam light source. One or more laserlight-sensitive regions are identified based on images of an area around the laserbeam light source, and indications of positions corresponding to the laserlight-sensitive regions are generated. The laserbeam light source is controlled based on the indications of the positions. The laserbeam light source may be controlled to deflect a laserlight beam away from laserlight-sensitive regions, to reduce an intensity of a laserlight beam directed towards a laserlight-sensitive region, etc. Motion estimation may be used to generate the indications of positions corresponding to the laserlight-sensitive regions.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: June 25, 2019
    Assignee: STMICROELECTRONICS S.r.l.
    Inventors: Danilo Pietro Pau, Emanuele Plebani
  • Patent number: 10334705
    Abstract: A user can control a plurality of lighting devices by positioning them in a configuration (e.g. a circular configuration). Through receiving the positions of the lighting devices a shape of the configuration can be determined. From a set of light scenes, each light scene associated with a shape, a light scene can be selected matching the shape of the configuration. The plurality of lighting devices are then controlled based on the selected light scene. This allows a user to select, for example, a romantic light scene by placing the lighting devices in a heart shape symbol.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: June 25, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Berent Willem Meerbeek, Bartel Marinus Van De Sluis, Huon Urbald Ogier Norbert Van De Laarschot
  • Patent number: 10333586
    Abstract: A method for transmitting data over a power signal to at least one lamp, said power signal comprising alternating high-power and low-power sections, said method comprising: modulating said power signal in one or more interface regions based upon at least one data symbol to generate a modulated signal having one or more modulated portions, each modulated portion having a first average power, each of said interface regions comprising adjacent portions of a high-power section and a low-power section, said adjacent portions having a second average portion; wherein said first average power is about the same as said second average power.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: June 25, 2019
    Assignee: SORAA, INC.
    Inventor: Laszlo Takacs
  • Patent number: 10332676
    Abstract: Coupled inductor signal transfer systems are disclosed in which transmitter and receiver coils are inductively coupled in a configuration for wirelessly transferring power and/or data signals. In preferred implementations, the systems may be used for transmitting both power and data. Preferred embodiments of the invention have at least one multi-tap coil on the primary side and/or secondary side of the system. The selection of taps enables the effective size and/or number of coils to be dynamically changed according to operational needs.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: June 25, 2019
    Assignee: TRIUNE SYSTEMS, LLC
    Inventors: Ross Teggatz, Wayne Chen, Amer Atrash, Jonathan Knight
  • Patent number: 10327307
    Abstract: An occupancy sensor with integral light level sensors is configured to turn off or disable peripheral circuits and go into a periodic deep sleep mode to reduce phantom loading. Peripheral circuits include occupancy sensor circuits and relay drive circuits, but may include other circuits such as communication circuits. The sensor may be configured to periodically wake itself up, check ambient light conditions to see if lighting is below the set threshold. If it is not, the sensor goes back to sleep. If it is, then the sensor can power up the occupancy sensor circuit to see if the space is occupied; if not, it can go back to sleep. If the space is occupied, it can turn on other peripheral circuits necessary to control the load.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: June 18, 2019
    Assignee: The Watt Stopper, Inc.
    Inventors: Jason Joyce, Thomas L. Grey
  • Patent number: 10321540
    Abstract: The power supply device includes a power switch including one terminal to which an input voltage is transferred; an inductor including one terminal connected to another terminal of the power switch; a diode connected between a ground and a floating ground; a sensing resistor connected between the floating ground and the one terminal of the inductor. A switch controller compares a modulation sensing voltage depending on a sensing voltage generated from the sensing resistor with a high peak reference and a low peak reference when a LED string is connected between an inductor and the ground. The switch controller controls a switching operation of a power switch according to the comparison result. The high peak reference and the low peak reference are references for controlling an upper limit and a lower limit of an LED current flowing through the LED string, respectively.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: June 11, 2019
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Young-Je Lee, Gye-Hyun Cho, Jae-Yong Lee, Yoon-Woong Chung, Ji-Hoon Jang
  • Patent number: 10317016
    Abstract: A lighting device has a housing, a light engine located in the housing with a printed circuit board (PCB) and one or more light emitting diodes (LEDs) arranged on the PCB, and an electronic driver for controlling the LEDs. The electronic driver includes a first driver part located at a first position in the housing and a second driver part located at a second position in the housing, the first driver part is electrically connected to the second driver part via a pair of electrically conductive traces on the PCB. The lighting device includes one or more capacitive devices arranged along the pair of electrically conductive traces connecting the first driver part and the second driver part. Each capacitive device is connected with a first terminal to a first trace and a second terminal to a second trace.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: June 11, 2019
    Assignee: LEDVANCE GMBH
    Inventor: Orestis Polychronakis
  • Patent number: 10314933
    Abstract: A fragrance dispensing system includes a fragrance dispensing mechanism, a network interface, and a control module. The control module receives a control signal from an input device via the network interface and controls the fragrance dispensing mechanism based on the control signal. The control signal corresponds to settings of the fragrance dispensing mechanism. The fragrance dispensing mechanism may include a fan, a light source, a power save switch, or a combination thereof. A method for controlling a fragrance dispensing system includes generating an interface at an input device, receiving input via the interface, generating a control signal based on the input, and remotely transmitting the control signal to the fragrance dispensing system. The input indicates settings of the fragrance dispensing system. The interface may include a selectable timer option, a selectable power mode, a fan control, a light control, or a combination thereof. The interface may include a fragrance indicator.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: June 11, 2019
    Assignee: Ambrosia Corporation
    Inventor: Benjamin R. Chase
  • Patent number: 10314130
    Abstract: System and method for providing at least an output current to one or more light emitting diodes. The system includes a control component configured to receive at least a demagnetization signal, a sensed signal and a reference signal and to generate a control signal based on at least information associated with the demagnetization signal, the sensed signal and the reference signal, and a logic and driving component configured to receive at least the control signal and output a drive signal to a switch based on at least information associated with the control signal. The switch is connected to a first diode terminal of a diode and a first inductor terminal of an inductor. The diode further includes a second diode terminal, and the inductor further includes a second inductor terminal.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: June 4, 2019
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Lieyi Fang, Jun Zhou
  • Patent number: 10314127
    Abstract: A parallel-type LED light string includes LED units connected in parallel to form a light string, the LED units are electrically connected to a first and a second conductive wires, one ends of the first conductive wire and the second conductive wire are respectively connected to a first end of the first one LED unit and a second end of the last one LED unit. The efficacy is that: voltages and currents of respective LED units of the entire light string are consistent and thus uniform brightness is achieved, and the number of 1-N LED units can be determined according to power of a power supply. Such parallel-type LED light string is better than a serial-type LED light string in that one abnormal LED unit does not affect other LED units, production process is simple, production cost is low and it is more suitable for decorative LED light string.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: June 4, 2019
    Inventor: Dian Qing Zheng
  • Patent number: 10314129
    Abstract: A load control device may be configured to turn on lighting loads to obtain a fast turn-on time that may be substantially consistent across lighting loads that have different load voltages. The load control device may comprise a power converter circuit configured to produce a voltage across a capacitor, and a control circuit configured to control the power converter circuit to generate the voltage across the capacitor. The control circuit may determine a learned voltage from the magnitude of the voltage across the capacitor. For example, the control circuit may measure the magnitude of the voltage and store the measured voltage as the learned voltage. The control circuit may determine an operating parameter for the power converter circuit as a function of the learned voltage, and control the power converter circuit according to the operating parameter to charge the capacitor until the magnitude of the voltage exceeds a threshold.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: June 4, 2019
    Assignee: Lutron Technology Company LLC
    Inventors: Steven J. Kober, Soma Sekhara Rao Konijeti, Rajesh Krishna Thottumkara, Keertana Veeranki
  • Patent number: 10314131
    Abstract: The present disclosure provides an LED driver with brightness control and a driving method thereof, which adjust a first rate of a first current mirror, a second rate of a second current mirror, and a reference current of a current source according to the brightness to be presented (related to image brightness information) to adaptively adjust an LED current flowing through an LED string, thereby reducing the loss of the LED current during operation over an operating current range. Besides, the LED driver with brightness control and the driving method thereof do not require that an operator adjusts the variation of the LED current in different operating current ranges in advance, thereby reducing the test time and cost and avoiding the operator from deciding a wrong adjustment amount.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: June 4, 2019
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Wen-Yen Chen, Ming-Hung Chang
  • Patent number: 10305373
    Abstract: A power factor correction (PFC) system includes a PFC circuit that receives an alternating current (AC) voltage and that, using a switch, generates a direct current (DC) voltage from the AC voltage. A zero crossing module determines a zero crossing of the AC voltage based on: a first voltage and a first time when the AC voltage transitioned from less than a first predetermined voltage to greater than the first predetermined voltage; and a second voltage and a second time when the AC voltage transitioned from less than a second predetermined voltage to greater than the second predetermined voltage. The first predetermined voltage is negative, and the second predetermined voltage is positive. A reference module, based on the zero crossing, generates a sinusoidal reference signal corresponding to the AC voltage in phase and frequency. A switching control module controls switching of the switch based on the sinusoidal reference signal.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: May 28, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Charles E. Green
  • Patent number: 10300242
    Abstract: The present invention relates to a device and method of training a child to go to sleep by providing a light which dims in response to a child sound or a presence other than the child and turns back on or brightens when the sound stops or the presence leaves.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: May 28, 2019
    Assignee: Hush Buddy, LLC
    Inventor: Scott Hanson
  • Patent number: 10304324
    Abstract: A control system is described for controlling an appliance, such as a fan. The control system includes a user-operable remote control for transmitting light signals, a control circuit for controlling at least one component of the appliance, such as a motor, and a user interface circuit for supplying control signals to the control circuit. The user interface circuit includes a switch and a receiver for receiving light signals transmitted by the remote control. A push button actuator both actuates the switch through movement of the actuator towards the switch, and conveys light signals received from the remote control to the receiver.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: May 28, 2019
    Assignee: Dyson Technology Limited
    Inventors: Arran George Smith, Orion Pardede, David Dos Reis
  • Patent number: 10305279
    Abstract: A load control device for controlling power delivered from an AC power source to an electrical device may be configured to conduct current through earth ground and may disconnect a switching circuit to reduce an amount of current conducted through the earth ground. The load control device may comprise a controllably conductive device configured to control the power delivered from the AC power source to the electrical device so as to generate a switched-hot voltage, a switching circuit electrically coupled with a detect circuit, and a control circuit configured to render the switching circuit conductive and nonconductive. The detect circuit may generate a detect signal indicating a magnitude of the switched-hot voltage. The control circuit may be configured to monitor the detect signal and to render the switching circuit non-conductive after detecting an edge on the detect signal to reduce the total current through the earth ground.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: May 28, 2019
    Assignee: Lutron Technology Company LLC
    Inventors: Dinesh Sundara Moorthy, James P. Steiner
  • Patent number: 10299348
    Abstract: A system and method provide fail-safe operation of a lighting system. A lighting level detector is used to obtain a baseline lighting level for a low-intensity light. If the detector measures less than the baseline level when an occupancy sensor determines the space is unoccupied, a high-intensity light is energized and an indication is provided to a user that the low-intensity light has failed. A method provides daylighting operation of a lighting system. An occupancy sensor can have Wi-Fi functionality to enable remote configuration of the sensor. A line voltage occupancy sensor can include an interface with low voltage devices. An occupancy sensor can include an integral interface to enable an external control system to override the sensor's normal logic under emergency conditions. An occupancy sensor can include an active temperature compensation feature. An occupancy sensor can also incorporate an automatically adjustable coverage area.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: May 21, 2019
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Brian Carberry, David Buerer, Jaiganesh Balasubramanian
  • Patent number: 10292245
    Abstract: A two-way load control system comprises a power device, such as a load control device for controlling an electrical load receiving power from an AC power source, and a controller adapted to be coupled in series between the source and the power device. The load control system may be installed without requiring any additional wires to be run, and is easily configured without the need for a computer or an advanced commissioning procedure. The power device receives both power and communication over two wires. The controller generates a phase-control voltage and transmits a forward digital message to the power device by encoding digital information in timing edges of the phase-control voltage. The power device transmits a reverse digital message to the controller via the power wiring.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: May 14, 2019
    Assignee: LUTRON TECHNOLOGY COMPANY LLC
    Inventors: Mark S. Taipale, Timothy P. Gredler, Akshay Bhat
  • Patent number: 10292243
    Abstract: The invention discloses that a controller of an LED for receiving a remote control signal, comprising a DC power source, and further comprising: a remote control transmitter for issuing a control command by a users: a remote control signal receiving module, for receiving a signal of the remote control transmitter, the remote control signal receiving module is electrically connected with the DC power source; a control circuit, which is electrically connected with an output end of the remote control signal receiving module and of the DC power source respectively, and converts a command signal from the remote control signal receiving module into a switching signal output; a drive circuit, which is connected to an output end of the DC power source and of the control circuit respectively, the drive circuit is turned on or turned off under a control signal of the control circuit to control that the DC power source outputs to a load.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: May 14, 2019
    Assignee: Changzhou Jutai Electronic Co., Ltd.
    Inventors: Jun Lin, Chengqian Pan, Bin Chen
  • Patent number: 10288272
    Abstract: A curved LED tubular lamp is disclosed. The curved LED tubular lamp includes a curved lamp tube having two straight segments and a curve segment disposed between the two straight segments; at least one flexible substrate having a plurality of LEDs mounted thereon, and at least one positioning pillar formed on the inner surface of the curve segment of the curved lamp tube, wherein each of the two straight segments and the curve segment have LEDs disposed therein, and wherein the flexible substrate is disposed in at least the curve segment.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: May 14, 2019
    Assignee: Zhejiang Super Lighting Electric Appliance Co., Ltd
    Inventors: Wentao Yao, Weijun Zhu, Zhaosong Lin, Zhi Guo
  • Patent number: 10292226
    Abstract: A direct AC LED lighting device is provided with a low-pass filter for filtering a threshold time in which a post diode bridge voltage exceeds an LED threshold voltage during a current AC half cycle for the post diode bridge voltage.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: May 14, 2019
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Nan Shi, Haiju Li
  • Patent number: 10291001
    Abstract: Rack-mount chassis for mounting to an electronic equipment rack are disclosed. A rack-mount chassis may include a housing comprising a top portion, a bottom portion, a first side portion, a second side portion and a back portion. The rack-mount chassis may further include a front portion forming a front face of the housing. The rack-mount chassis may also include at least one electronic component within the housing. The rack-mount chassis may further include at least one electrical power coupler mounted to at least one recessed portion of the first side portion of the housing configured to mate with a corresponding connector plug of a power cord and supply electrical power therefrom to the at least one electronic component.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: May 14, 2019
    Assignee: Digital Alert Systems, Inc.
    Inventors: William Guy Robertson, Daniel Lawrence Bernard
  • Patent number: 10282978
    Abstract: A lighting control system includes a daylight sensor configured to receive visible light control signals to set or adjust one or more parameters of the daylight sensor including, e.g., a set point (i.e., an acceptable lighting level). The lighting control system also includes a non-transitory computer program product that includes programming instructions that may be downloaded to, e.g., a mobile device and/or may be executed by a processor or like device. The programming instructions may be configured to provide a user interface related to the daylight sensor, receive via the user interface one or more user inputs related to the daylight sensor, and modulate a light output of a light source to transmit visible light control signals corresponding to the received one or more user inputs. Methods of programming a daylight sensor with visible light control signals are also provided, as are other aspects.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: May 7, 2019
    Assignee: ABL IP HOLDING, LLC
    Inventor: Audwin Cash
  • Patent number: 10278258
    Abstract: A lighting device is a device that is for supplying current to an LED unit, is connected to a constant current source having output terminals to which a capacitor is connected, and includes: a transistor connected in parallel with the capacitor and connected in series with the LED unit; a modulation circuit (a microcomputer of a modulator, etc.) that causes the transistor to switch ON and OFF based on a signal for visible light communication; and a constant current control circuit that maintains a current flowing through the transistor at a constant current when the current flowing through the transistor is greater than a first predetermined value.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: April 30, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shigeru Ido, Keisuke Seki, Kazuhiko Hayashi
  • Patent number: 10278246
    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: February 19, 2018
    Date of Patent: April 30, 2019
    Inventors: Shiyong Zhang, Aaron Ganick
  • Patent number: 10278269
    Abstract: A lighting system that includes a lighting device and a dimming controller. The lighting device has a support structure that supports multiple lighting zones. Each lighting zone including one or more lighting sources. The dimming controller is in communication with multiple dimmers supported by the lighting device. Each of the lighting sources is coupled to a corresponding dimmer from the multiple dimmers. The dimming controller is configured to communicate a controlled setting for one or more of the lighting zones to the multiple dimmers.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: April 30, 2019
    Assignee: DOLAN DESIGNS INCORPORATED
    Inventor: Patrick S. Dolan
  • Patent number: 10265539
    Abstract: A therapeutic light emitting diode lighting system to treat seasonal affective disorder, to be provided at an upper portion of a hot tub basin above an indicated maximum water level, the hot tub basin defining at least one seat portion and corresponding headrest defined by the hot tub basin such that a facial region corresponds to the headrest, the facial region corresponding to a facial area of a person seated in the seat portion and supported by the headrest, the therapeutic light emitting diode lighting system including at least one array of light emitting diode (LED) bulbs provided on the upper area, the LED bulbs configured to illuminate colors and wavelengths selected to treat seasonal affective disorder, the LED bulbs being angled to direct light at the facial region of the hot tub body.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: April 23, 2019
    Assignee: LPI, Inc.
    Inventor: David E. Hatley
  • Patent number: 10264640
    Abstract: A device (500) and method (600) control a dimming level of one or more lighting units (130) in response to a user interaction with a reference-free user interface (410), such as a rocker-type interface. A bidirectional triode thyristor (460) supplies an AC input voltage (110) to the lighting unit(s) when it is triggered. A triggering circuit (510) triggers the bidirectional triode thyristor. The triggering circuit includes a capacitor (554) and a variable resistance element (510) which sets a time constant during each half cycle of a period of the AC input voltage for charging the capacitor to a triggering voltage which triggers the bidirectional triode thyristor. The resistance of the variable resistance element is controlled in response to a dimming input signal from the reference-free user interface. The dimming input signal indicates only relative changes in the output level of the lighting unit(s) with respect to the present level.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: April 16, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventor: Shangwu Chen
  • Patent number: 10260683
    Abstract: A lamp includes an optically transmissive enclosure for emitting an emitted light and a base connected to the enclosure. At least one first LED filament and at least one second LED filament are located in the enclosure and are operable to emit light when energized through an electrical path from the base. The first LED filament emits light having a first correlated color temperature (CCT) and the second LED filament emits light having a second CCT that are combined to generate the emitted light. A controller operates to change the CCT of the emitted light when the lamp is dimmed.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: April 16, 2019
    Assignee: Cree, Inc.
    Inventors: Michael John Bergmann, John Adam Edmond
  • Patent number: 10257898
    Abstract: A LED driving apparatus including a power converter, a judging module and a control module is disclosed. The power converter and the judging module are coupled to at least one LED respectively. The control module is coupled to the judging module. The control module includes a current source and a transconductance amplifier. The current source is coupled to an output terminal of the transconductance amplifier. The power converter converts an input voltage into an output voltage and transmits the output voltage to the at least one LED. The judging module judges whether a LED current is changed from a first LED current value to a second LED current value. If yes, the judging module generates a judging signal to the control module. The control module changes a current value of the current source and a transconductance of the transconductance amplifier.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: April 9, 2019
    Assignee: Raydium Semiconductor Corporation
    Inventors: Hsuan-Hao Chien, Shen-Xiang Lin, Chih-Jen Hung
  • Patent number: 10256813
    Abstract: Techniques for improving the transient response in a switching converter are provided. An example of a gate driving circuit for driving a high-side switch in a switching converter according to the disclosure includes a first switch operably coupled to a source lead and a gate lead of the high-side switch, a first super source follower circuit operably coupled to the gate lead of the high-side switch, and a mid-voltage power supply operably coupled to the first super source follower circuit.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: April 9, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Taewoo Kwak, Joseph Rutkowski
  • Patent number: 10257896
    Abstract: Systems and methods for of dimming generally considered to be non-dimmable with conventional dimmers. An exemplary dimming module accepts a power source for a light source and a dimming signal. The dimming module modifies the power signal and generates a modified power signal capable of dimming LED light sources (and other light sources) that are generally considered to be non-dimmable with conventional dimmers. The dimming signal can be a wireless signal. Exemplary embodiments include a computer application executing on a computer or handheld computer that can be used to remotely dim, via the dimming module, one or more LED light sources (and other light sources) that are generally considered to be non-dimmable with conventional dimmers.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: April 9, 2019
    Assignee: Kichler Lighting LLC
    Inventors: Thomas Joseph Tyson, John J. Andrisin, III
  • Patent number: 10249244
    Abstract: An organic light-emitting display comprises: a display panel with a plurality of pixels; a plurality of source driver ICs comprising sensing blocks that are connected to the pixels and sense the electrical characteristics of the pixels; and a calibration block that applies test currents to the sensing blocks in order to sense offset variations between the sensing blocks in a preset calibration mode. The calibration block comprises: a plurality of discrete current sources that generate the test currents; and a switch array that connects the source driver ICs and the discrete current sources, wherein two or more neighboring source driver ICs share one discrete current source, and each source driver IC is selectively connected to two or more discrete current sources.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: April 2, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Seungtae Kim, Myunggi Lim, Seokhyun Hong
  • Patent number: 10251237
    Abstract: A light device comprises at least one light module having a front side and a rear side, as well as a lighting means arranged for emitting light from the front side, a lighting means arranged for emitting light from the rear side, and a control unit. The control unit is configured for adjusting the front-side lighting means and the rear-side lighting means. In particular, the control unit is configured to calibrate the light module to a light level that can be preset, to dynamically adjust the front-side lighting means for the display of information, and to adjust the rear-side lighting means such that it is adapted to the dynamically adjusted front-side lighting means, so that the calibrated light level is constant. In this way, the light device can influence the lighting properties in a target area in such a way that an impairment of the illumination of the target area is minimal for displaying the information even with varying lighting properties of the front lighting means.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: April 2, 2019
    Assignee: IART LAB GMBH
    Inventors: Valentin Benjamin Spiess, Juan José Ferrari
  • Patent number: 10244590
    Abstract: This disclosure relates to visible light communication (VLC) system-on-a-chip (SoC) systems/methods and VLC system-in-a-package (SiP) systems/methods. A VLC SoC system may include an integrated circuit comprising a VLC encoder and an LED driver fabricated on a first portion of a silicon substrate and an LED fabricated in a compound semiconductor selectively grown on a second portion of the silicon substrate. A VLC SiP system may include an integrated circuit comprising a VLC encoder and an LED driver fabricated on a silicon substrate and an LED fabricated in a compound semiconductor. The integrated circuit and the LED may be packaged in a SiP module. Interconnects may be formed between the integrated circuit and the LED.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: March 26, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventor: Albert Wang
  • Patent number: 10237931
    Abstract: A switching power converter is provided that includes a current source that controls the charging of a storage capacitor to provide a regulated internal power supply voltage.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: March 19, 2019
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventor: Chenglong Zhang
  • Patent number: 10230262
    Abstract: A device includes a connection receiving power from a power source under normal conditions and circuitry configured to determine, based on an input from the connection, when the power from the power source is absent; output, when the power source is absent, a test signal at the connection; and generate a detection signal based on current flow generated following the output of the test signal, wherein the detection signal indicates a position of a switch connecting the circuitry to the connection and the generated detection signal indicates the switch is closed when the current flow is above a threshold. The circuitry is configured such that when the power from the power source is absent, the switch is closed, and plural devices are connected on the supply side of the switch, the plurality of devices on the supply side appear as a substantially open circuit to the test signal.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: March 12, 2019
    Assignee: CAPSTONE LIGHTING TECHNOLOGIES, LLC.
    Inventors: Neil Singer, John Anthony Granata, Kenneth Alan Pasch, Stewart Wallach
  • Patent number: 10231300
    Abstract: A lighting apparatus having a plurality of light-emitting devices (LEDs) can include at least one first LED that is configured to emit first chromaticity light, at least one second LED that is configured to emit second chromaticity light, and at least one additional LED that is configured to emit third chromaticity light. A control circuit can be operatively coupled to the plurality of light-emitting devices and configured to cause a color temperature produced by the plurality of LEDs to vary substantially in conformance with a Planckian locus in response to a dimming control input less than about 1800K.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: March 12, 2019
    Assignee: Cree, Inc.
    Inventors: Mark Cash, Shawn Hill
  • Patent number: 10231311
    Abstract: A method for operating an optoelectronic assembly which includes at least one component string having at least one section, wherein the section includes at least one light emitting diode element, is provided. According to the method, the section is supplied with electrical energy, the supply of the section with electrical energy is interrupted, an input of the section is electrically coupled to an output of the section, wherein the section is short-circuited via the electrical coupling of the input to the output, a maximum value of an electrical discharge current which flows via the section is detected, and the fact of whether the section of the component string has a short circuit is determined depending on the detected maximum value.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: March 12, 2019
    Assignee: OSRAM OLED GMBH
    Inventor: Kilian Regau
  • Patent number: 10222014
    Abstract: A system for managing emergency lighting is generally described. In particular, the present disclosure relates to self-tests and predictive life expectancy operations of emergency lighting systems. Further, the present disclosure relates to an automated system and method for performing self-tests and predicting emergency lighting fixture life expectancy. In the exemplary embodiments, emergency lighting system tests may be automatically scheduled, carried out, and evaluated.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: March 5, 2019
    Assignee: Gooee Limited
    Inventors: Simon Coombes, Shmuel Silverman, Jonathan Couch
  • Patent number: 10222681
    Abstract: A segmented light or optical power emitting device and an illumination device are described. The segmented device includes a die having a light or optical power emitting semiconductor structure that includes an active layer disposed between an n-layer and a p-layer. Trenches are formed in at least the semiconductor structure and separate the die into individually addressable segments. The active layer emits light or optical power having a first color point or spectrum. At least one wavelength converting layer is adjacent the die and converts the light or optical power to light or optical power having at least one second color point or spectrum and limits an energy ratio of the pump light or optical power that passes through the at least one wavelength converting layer unconverted to total light or optical power emitted by the light or optical power emitting device to less than 10%.
    Type: Grant
    Filed: November 5, 2017
    Date of Patent: March 5, 2019
    Assignee: Limileds LLC
    Inventors: Arjen Gerben Van Der Sijde, Quint Van Voorst Vader, Nicola Pfeffer
  • Patent number: 10222044
    Abstract: A light source apparatus according to an embodiment of the present technology includes a plurality of light source portions, a plurality of temperature adjustment units, and a drive control unit. The plurality of temperature adjustment units are capable of respectively adjusting temperatures of the plurality of light source portions. The drive control unit is capable of controlling a drive timing of each of the plurality of temperature adjustment units.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: March 5, 2019
    Assignee: SONY CORPORATION
    Inventors: Tomoyuki Oki, Hirotaka Muramatsu
  • Patent number: 10225894
    Abstract: Provided is an electrical load driving device including an SMPS (switching mode power supply). The electrical load driving device comprises: a rectifying unit configured to rectify a current on an output path of the SMPS; a current limiting unit configured to limit the current output from the rectifying unit to a value equal to or less than a predetermined magnitude; a smoothing unit configured to supply a power to a load by smoothing a current output from the current limiting unit; and a floating prevention unit configured to be installed between an output terminal of the rectifying unit and an input terminal of the current limiting unit and to prevent an output of the rectifying unit from floating when the current limiting unit is interrupted.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: March 5, 2019
    Inventor: Sang-Woo Yu
  • Patent number: 10219340
    Abstract: A method of controlling illumination, including transmitting location information from a communication device to a computer; receiving illumination data with the communication device, where the illumination data is generated by the computer based at least in part on the location information; and transmitting an illumination signal from the communication device to a wearable accessory containing at least one light source, where the illumination signal is based at least in part on the received illumination data and is operable to actuate the at least one light source.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: February 26, 2019
    Inventor: Seth Gerszberg