Thermal Responsive Regulator Patents (Class 315/309)
  • Patent number: 10983491
    Abstract: An automation device, having an input for receiving input signals and/or an output for outputting output signals of a process, and an electronic data processing unit, which is adapted to run an application program during operation of the automation device and to process data contained in the input and/or output signals by means of a program function, characterized in that in a digital program memory, a plurality of program functions is stored separately to the application program, which are each uniquely addressable via a function pointer, wherein during operation of the automation device, based on a predetermined function selection, the application program is configured to determine the function pointer of the program function corresponding to the predetermined function selection from a functions reference list stored in a digital data memory and, by means of the determined function pointer, to run the program function corresponding to the predetermined function selection for processing the data contained in
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: April 20, 2021
    Assignee: WAGO Verwaltungsgesellschaft mbH
    Inventors: Niels Fangmeier, Stefan Van Lier
  • Patent number: 10941909
    Abstract: A light fixture includes a housing having a first side and a second side opposite the first side. The light fixture further includes a first light board coupled to the first side. The first light board has at least one light emitting element emitting a first light output in a first direction. The light fixture further includes a second light board coupled to the second side. The second light board has at least one light emitting element emitting a second light output in a second direction. The light fixture further includes a first driver supported by the housing and in electrical communication with the first light board. The first driver is operable to control the first light output. The light fixture further includes a second driver supported by the housing and in electrical communication with the second light board. The second driver is operable to control the second light output.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: March 9, 2021
    Assignee: Hubbell Incorporated
    Inventors: Jeremy W. Ogg, Derek B. Baker, Michael J. Centazzo, Cory A. Passerello
  • Patent number: 10896944
    Abstract: An illumination lighting apparatus is configured to light a plurality of light-emitting elements connected in series to each other. The illumination lighting apparatus includes one photosensor and a detector. The one photosensor is configured to detect light emitted from the plurality of light-emitting elements. The detector is configured to perform detection of a light emission defect on the plurality of light-emitting elements based on the light detected by the one photosensor. Moreover, the detector performs the detection process at an initial stage of lighting of the plurality of light-emitting elements.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: January 19, 2021
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Teruhito Takeda, Hirofumi Konishi, Shinji Makimura
  • Patent number: 10852164
    Abstract: A sensor device includes a two-pin current interface including an input pin configured to draw an input current and an output pin configured to output an output current, a sensor configured to generate a measurement signal, and a current modulator configured to generate a current pulse as the output current such that the output current toggles between at least two main current states based on the measurement signal. The current modulator is configured to modulate the output current such that the output current is increased, to a first current level greater than the at least two main current states, at an initial phase of the current pulse for a first duration, and to modulate the output current such that the output current is decreased, to a second level less than the at least two main current states, at a terminal phase of the current pulse for a second duration.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: December 1, 2020
    Inventors: Lorenzo Coceani, Bernhard Forster
  • Patent number: 10811184
    Abstract: Provided is a reactor having a coil including a winding portion; a magnetic core including an inner core portion and an outer core portion; an inner resin portion with which a space between the winding portion and the inner core portion is filled; and an end surface interposed member is interposed between an end surface of the winding portion and the outer core portion and includes a through hole into which the inner core portion is inserted and a resin filling hole communicating with an interior of the winding portion between the winding portion and the outer core portion. The outer core portion includes at least one recessed portion on the circumferential edge portion of the inner end surface opposing the end surface of the inner core portion, and the recessed portion is recessed inward with respect to the end surface of the inner core portion.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: October 20, 2020
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Shinichiro Yamamoto, Seiji Shitama
  • Patent number: 10783050
    Abstract: In some examples, a method may be performed through light adjustment circuitry of a server that includes a panel light. The method may include identifying a server version of the server from a hardware configuration detected for the server and adjusting a light color of the panel light to account for a lighting variance characteristic of the server version.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: September 22, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Daniel Ross Gonzales, James Jeffery Schulze, Gennadiy Rosenberg
  • Patent number: 10334682
    Abstract: An LED lighting system includes a luminescent unit driven by a rectified AC voltage, a dimmer switch configured to adjust a duty cycle of a system current, and a bleeder circuit. The bleeder circuit includes a first current source, a second current source, a third current source, a current-sensing element for providing a first feedback voltage associated with the system current, a capacitor, and a control unit. The control unit is configured to activate the first current source and deactivate the second current source for charging the capacitor when the system current exceeds a predetermined threshold, deactivate the first current source and activate the second current source for discharging the capacitor when the system current does not exceed the predetermined threshold, and deactivate the third current source to stop supplying the bleeder current according to a second feedback voltage established across the capacitor.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: June 25, 2019
    Assignee: IML International
    Inventors: Horng-Bin Hsu, Yi-Mei Li, Yung-Hsin Chiang
  • Patent number: 10321040
    Abstract: An image apparatus may be configured to calculate a depth of an object relative to the image apparatus. The image apparatus may include an image sensor that may capture a plurality of images of the object. Depth calculation may include calculating a binocular disparity using the plurality of images, measuring a local temperature value from at least one temperature sensor, correcting a focal length of at least a portion of the image apparatus according to the measured local temperature value, and calculating a depth of the object using the binocular disparity and the corrected focal length. The corrected focal length may be determined based on a focal length variation value. The focal length variation value may be determined based on performing contrast autofocus on one or more captured images and the local temperature value.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: June 11, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Se-Hwan Yun, Daekwan Kim, Chaesung Kim, DongKi Min
  • Patent number: 10237932
    Abstract: An LED lighting system includes a luminescent unit driven by a rectified AC voltage, a dimmer switch configured to adjusting a duty cycle of a system current, and a bleeder circuit. The bleeder circuit includes a first current source, a second current source, a third current source, a current-sensing element for providing a first feedback voltage associated with the system current, a capacitor, and a control unit. The control unit is configured to activate the first current source and deactivate the second current source for charging the capacitor when the system current exceeds a predetermined threshold, deactivate the first current source and activate the second current source for discharging the capacitor when the system current does not exceed the predetermined threshold, and deactivate the third current source to stop supplying the bleeder current according to a second feedback voltage established across the capacitor.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: March 19, 2019
    Assignee: IML International
    Inventors: Horng-Bin Hsu, Yi-Mei Li, Yung-Hsin Chiang
  • Patent number: 10120398
    Abstract: In one example, a method includes determining, by a temperature sensor, a temperature of a device that controls an amount of current flowing to a load, and determining, based on the temperature of the device, a threshold current. The method also includes, in response to determining that the amount of current flowing to the load is greater than the threshold current, adjusting the amount of current flowing to the load.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: November 6, 2018
    Assignee: Infineon Technologies AG
    Inventors: Robert Illing, Alexander Mayer
  • Patent number: 10076009
    Abstract: The invention relates to a lighting system (1) comprising a lighting device (6) having a first USB-PD connector and a power providing unit, which is preferentially a component of a power providing device (4) and which is operable in different operational modes. A second USB-PD connector is electrically connected with the power providing unit and adapted to be connected with the first USB-PD connector for generating a USB-PD connection (5) via which power and optionally also data are receivable by the lighting device. A connection feature value being indicative of a feature of the connection is determined and the operational mode of the power providing unit is controlled depending on the determined connection feature value. This allows for a reaction on the current connection situation. For instance, if the connection feature value indicates a relatively low thermal coupling, the power providing unit may provide less power.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: September 11, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Martinus Petrus Creusen, Mark Johannes Antonius Verhoeven, Reinier Imre Anton Den Boer, Marcel Beij
  • Patent number: 10045414
    Abstract: A method for increasing the luminous intensity of an ultraviolet light emitting diode includes heating an ultraviolet light emitting diode to a working temperature, and supplying electricity to the ultraviolet light emitting diode at the working temperature to make the ultraviolet light emitting diode emit ultraviolet light. An apparatus for increasing the luminous intensity of an ultraviolet light emitting diode includes a substrate, an ultraviolet light emitting diode mounted on the substrate, an electric heater mounted on the substrate, a temperature sensor, and a controller electrically connected to the ultraviolet light emitting diode, the electric heater, and the temperature sensor. The controller can heat the ultraviolet light emitting diode through the substrate.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: August 7, 2018
    Assignee: National Sun Yat-Sen University
    Inventors: Ting-Chang Chang, Kuan-Chang Chang, Tsung-Ming Tsai, Chih-Cheng Shih, Bo-Wei Chen, Chung-I Yang
  • Patent number: 9713209
    Abstract: Devices, systems, software, and methods for control of light emitting diodes (LEDs) via an LED driver circuit that receives an input signal from a power source and generates an output signal to power at least one LED element. The LED driver comprises a driver housing, an opening in the driver housing configured for receiving a removable plug-in module, and a plug-in interface configured for providing electrical connection between the plug-in module and the LED driver. The plug-in module comprises an external memory storing configuration information. The LED driver further comprises at least one driver circuit disposed within the driver housing and comprising an internal memory and a microcontroller. The microcontroller is configured for receiving the configuration information from the external memory of the plug-in module and regulating the output signal provided to the at least one LED element based on the configuration information.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: July 18, 2017
    Assignee: Crestron Electronics, Inc.
    Inventor: Evan Ackmann
  • Patent number: 9713237
    Abstract: A dynamically optimized ballast includes a ballast and a circuit board as main components combined together. Said circuit board is provided with a microcontroller, a timer and a current-switching device; wherein said microcontroller is provided with a timed step-up module which can start the timer and maintain a low current output to HID lamp at the time the circuit board is powered, and the timer will transmit a signal to the microcontroller to start the current-switching device and automatically switch to a high current output to HID lamp when a preset time of the timer has been reached. So that this invention can protect HID lamp and extend the service life of HID lamp, even the HID lamp pulsing for a long time, the power source repeated power supply and power out will not cause great damage to HID lamp and it will not be out of function. Besides, this invention enables user to reduce the brightness of HID lamp to reduce the loss of electric power and the deterioration of HID lamp.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: July 18, 2017
    Assignee: LoPresti Speed Merchants
    Inventor: Bobby Leang
  • Patent number: 9602204
    Abstract: Proposed is a light module (110) comprising at least two primary light sources (111,112,113) capable of emitting a primary color light. This allows the light module to emit light having intensity (Y) and color coordinates (x,y) through additive color mixing of the constituent primary colors. The light module further comprises an modulator (115) capable of modulating the primary light sources enabling embedment of data in the light emitted. The modulator (115) is arranged to modulate the color coordinates of the light emitted for embedding the data. This is especially advantageous as the sensitivity of the human eye to changes in color is lower than to changes in intensity. The invention thus advantageously allows embedding the data into the light emitted from the light modules (110) of an illumination system (100) without reducing the performance of its primary function as an aid to human vision.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: March 21, 2017
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Tim Corneel Wilhelmus Schenk, Lorenzo Feri, Paulus Henricus Antonius Damink, Martin Maurice Vernhout, Dragan Sekulovski
  • Patent number: 9572209
    Abstract: An actuating device comprises an LED actuating module. Said LED actuating module comprises a micro-programmed control unit (MCU), an actuator, a VF-value detection module, a PN-junction temperature acquisition module and an LED lamp unit. The MCU determines the current value matched with the LED lamp unit based on the VF value detected by the VF-value detection module and the temperature value detected by the PN-junction temperature acquisition module, and then determines the width of the PWM pulse output to the actuator according to the current value, and the actuator actuates an LED to operate at the matched current value.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: February 14, 2017
    Inventor: Jun Hu
  • Patent number: 9560711
    Abstract: A system and method of thermal management for an LED are provided. A method provided by the system includes (a) providing a forward drive current to power the LED, the forward drive current having a first LED operating current component; (b) detecting the first LED operating current component; (c) sensing a first thermal operating point of the LED; and (d) generating a temperature signal indicative of the first thermal operating point. The method also includes (e) determining a thermal operating range of the LED; (f) determining that the first thermal operating point of the LED is outside the thermal operating range of the LED; and (g) generating a first control setting configured to cause the LED to be driven at a second operating point, the second thermal operating point within the thermal operating range.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: January 31, 2017
    Assignee: TerraLUX, Inc.
    Inventors: Anthony W. Catalano, Daniel J. Harrison, Steven S. Davis
  • Patent number: 9497820
    Abstract: A method of operating a lighting fixture comprising a plurality of discrete illumination sources of distinguishably different color coordinates comprises determining target color coordinates and luminous flux at which to operate the lighting fixture, determining input electrical power values for each of the plurality of discrete illumination sources that substantially produce the target color coordinates and luminous flux by referencing a calibration data lookup table having calibration data based on measurements of the plurality of discrete illumination sources, determining a color mixing zone defined by three distinguishably different color coordinates of the plurality of discrete illumination sources within which the target color coordinates lie according to the calibration data, determining luminous flux ratios for each of the plurality of discrete illumination sources having one of the three distinguishably different color coordinates defining the color mixing zone that substantially produces the target
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: November 15, 2016
    Assignee: B/E AEROSPACE, INC.
    Inventors: Gannon T. Gambeski, David P. Eckel, Seckin K. Secilmis, Andrew B. Walsh, Richard Waring, Jr., Rand Lee, David Jenkins, Maciej Adam Jakuc, Jeffrey Reeder
  • Patent number: 9482435
    Abstract: An appliance and method for variably controlling a drive signal to a light emitting device of the appliance based on a temperature value indicative of a temperature within a chamber of the appliance is provided. The light emitting device can be included in a display or disposed within a chamber of the appliance to provide illumination. The light intensity level of the light emitting device can be controlled based on the temperature value indicative of a temperature within the chamber. The temperature value indicative of a temperature within the chamber can be a value detected within the chamber, a value detected on a surface of the chamber, or a value that anticipates the temperature within the chamber. The light intensity can be controlled with a driving signal to the light emitting device. For instance, the light intensity can be controlled using pulse width modulation of the driving signal.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: November 1, 2016
    Assignee: Haier US Appliance Solutions, Inc.
    Inventor: Eric Xavier Meusburger
  • Patent number: 9478175
    Abstract: A liquid crystal display (LCD) device having an LCD panel with a plurality of pixels is disclosed. The LCD device includes gate and data driving circuits to provide a gate pulse and a data voltage to the pixels, respectively, and a timing controller to control the gate and data driving circuits. The LCD device also includes a backlight unit to provide light to the liquid crystal panel. The backlight unit includes a light source having at least one LED channel, a driving voltage generator to supply a driving voltage to the LED channel, and an LED driver to supply a conditional pulse width and amplitude modulation (CPWAM) signal to the LED channel. The CPWAM signal has a pulse with an amplitude and a width that are both variable from one period of a predetermined length to another period of the predetermined length.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: October 25, 2016
    Assignee: LG Display Co., Ltd.
    Inventor: Seongho Lim
  • Patent number: 9462657
    Abstract: A system and method for operating one or more light emitting devices is disclosed. In one example, the light emitting devices may be deactivated in response to a rate of temperature rise of the light emitting devices.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: October 4, 2016
    Assignee: Phoseon Technology, Inc.
    Inventor: Jeff Smith
  • Patent number: 9389496
    Abstract: A projector includes an optical engine unit including a light source unit configured to emit light, a light modulating unit configured to modulate, according to image information, the light emitted from the light source unit, and a projecting unit configured to project the light modulated by the light modulating unit, a connecting unit connectable to a bulb socket, a power supply unit configured to supply electric power received from the connecting unit to the optical engine unit, and a cooling unit arranged between the connecting unit and the optical engine unit and configured to circulate the air to cool the power supply unit and the optical engine unit.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: July 12, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Kaname Nagatani
  • Patent number: 9374864
    Abstract: A controller circuit is configured to adjust the number of light-emitting diodes that a current flows from a rectifier circuit through so that: the number of light-emitting diodes, which are lit, of the plurality of light-emitting diodes increases according to a value of a pulsating voltage during a time period that the value of the pulsating voltage increases; and the number of light-emitting diodes, which are lit, of the plurality of light-emitting diodes decreases according to the value of the pulsating voltage during a time period that the value of the pulsating voltage decreases. Light-emitting diodes, which start to emit light by a higher voltage value, of the plurality of light-emitting diodes are disposed at a position nearer to an outside of a mounting region of a substrate than light-emitting diodes, which start to emit light by a lower voltage value, of the plurality of light-emitting diodes.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: June 21, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takeshi Kamoi, Akinori Hiramatu, Hiroshi Kido, Katsushi Seki, Shigeru Ido, Daisuke Yamahara, Daisuke Ueda
  • Patent number: 9360065
    Abstract: An active corrosion protection circuit for a brake disc-pad unit of a motor vehicle includes one of a metal disc and a pad adapted to selectively block the disc. A direct electric voltage source and an electric conductor connectable to the electric voltage source and one of the disc and the pad forms an electric circuit causing a monopolar current flux between the disc and the pad when the pad blocks the disc so that the action of the current is localized in a contact zone between the disc and the pad.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: June 7, 2016
    Assignee: ITT ITALIA S.r.l.
    Inventors: Diego Adolfo Santamaria Razo, Marco Travet
  • Patent number: 9338851
    Abstract: A method for operating a LED lighting system at a target output color is provided. The LED system includes a color sensor and three or more LED emitters each operable at a controllable emitter drive setting. The method provides at least one calibration matrix defining a relationship between measurements obtained from the color sensor, represented by sensor color point coordinates, and absolute color point coordinates in an absolute color space. In some embodiments, a calibration matrix defining a non-linear relationship between the two color spaces is provided. In other embodiments, individual calibration matrices are provided for each LED emitter.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: May 10, 2016
    Assignee: INSTITUT NATIONAL D'OPTIQUE
    Inventors: Stephane Melanson, Marco Michele Sisto
  • Patent number: 9326346
    Abstract: Thermally managing at least one light-emitting diode (LED) receiving an operating current and/or an operating voltage and being operable at an operating temperature includes determining a current thermal operating point of the LED, obtaining a thermal operating range of the LED, and calculating a new operating point of the LED based on the current thermal operating point and the thermal operating range, wherein the new operating point is within the thermal operating range. A control signal is generated that adjusts power delivered to the LED to cause the LED to operate at the new operating point. Detection of the operating temperature of the LED may be based on the magnitude of a current pulse superimposed on the operating current provided to the LED and the magnitude of the voltage pulse across the LED resulting from the applied current pulse superimposed on the operating current.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: April 26, 2016
    Assignee: TerraLUX, Inc.
    Inventors: Anthony W. Catalano, Daniel J. Harrison, Steven S. Davis
  • Patent number: 9271368
    Abstract: A lighting device capable of generating warm or neutral white light using blue light-emitting diodes (“LEDs”), red LEDs, and/or luminescent material that responds to blue LED emission is disclosed. The lighting device includes multiple first solid-state light-emitting structures (“SLSs”), second SLSs, and balancing resistor element. The first SLS such as a string of blue LED dies connected in series is able to convert electrical energy to blue optical light, which is partially turned into longer wavelength emission by the luminescent material. The second SLS such as a red LED die is configured to convert electrical energy to red optical light, wherein the second SLSs are connected in series. While the first SLSs and second SLSs are coupled in parallel, the balancing resistor element provides load balance for current redistribution between the first and second SLSs in response to fluctuation of operating temperature.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: February 23, 2016
    Assignee: Bridgelux, Inc.
    Inventor: Tao Tong
  • Patent number: 9265119
    Abstract: In various embodiments, a module for providing thermal fold-back protection to an illumination device includes a housing, at least one temperature sensor, and thermal fold-back circuitry.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: February 16, 2016
    Assignee: TerraLUX, Inc.
    Inventors: Anthony W. Catalano, Anthony N. McDougle
  • Patent number: 9204524
    Abstract: An adjustable LED lighting system may allow for a variable lumen output, an estimation of remaining life expectancy, and/or control of lighting intensity, color temperature, and/or wavelength distribution. An LED lighting system may be capable of mimicking externally monitored, remote controlled, pre-defined, user-selected, or other lighting conditions. An LED lighting system may allow for a variable lumen output by monitoring a temperature associated with one or more LEDs and increasing or decreasing current flow to maintain the monitored temperature below a maximum temperature. The remaining life may be estimated based on historical runtime and temperature data.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: December 1, 2015
    Assignee: DYNOTRON, INC.
    Inventors: James Saffari, Angela Saffari
  • Patent number: 9198253
    Abstract: A semiconductor lighting apparatus includes a plurality of semiconductor light emitting devices for outputting light having respective colors, a projector for synthesizing output light of the semiconductor light emitting devices and outputting synthesized light, and a calculating portion. The calculating portion controls a driving current to be supplied to the semiconductor light emitting devices in such a manner that a light quantity detected by optical sensors approximates to a predetermined target light quantity, and calculates a target temperature of the semiconductor light emitting devices to control temperature regulating portions in such a manner that a temperature detected by temperature sensors approximates to the target temperature.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: November 24, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroyuki Watanabe, Makoto Kuriaki, Tetsuya Nishimura, Yasuhito Tanaka
  • Patent number: 9192011
    Abstract: A bleed circuit is applied to a transformer based on a bleed-on time and a bleed-off time determined by monitoring an output voltage waveform of the transformer.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: November 17, 2015
    Assignee: TerraLUX, Inc.
    Inventor: Brian Brandt
  • Patent number: 9161399
    Abstract: An adjustable power supply (1) for light emitting diode arrangements (11), with the power supply (1) being dimensioned for a power class. The power supply (1) has an adjustable current source (3) and an adjustable power limitation (4), and the power limitation (4) is adjustable within the limits of the power class. The power supply (1) further has a control component (5) that is suitable for running an operating program (8). This operating program (8) uses, as its input parameters (7), the number of light emitting diodes (13) to be controlled and their method of connection and, from these parameters, it calculates the required current and the required power, according to which the current source (3) and the power limitation (4) are adjusted and regulated.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: October 13, 2015
    Assignee: Minebea Co., Ltd.
    Inventors: Manfred Schlenk, Masaya Yamashita
  • Patent number: 9161415
    Abstract: A control system is disclosed for determining an actual temperature of a light emitting diode. The control system uses conductor that supply power to the light emitting diode to supply a pulse to the light emitting diode. The pulse is determined along with a reaction caused by the pulse and the information gained is used in determination of the light emitting diode die temperature which can then be used in controlling current to the light emitting diode to control the temperature of the light emitting diode.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: October 13, 2015
    Assignee: TerraLUX, Inc.
    Inventors: Anthony Catalano, Daniel Harrison
  • Patent number: 9125260
    Abstract: A control system for a feedback controlled LED driving circuit, which includes a valley detect regulator unit and a control and feedback unit. The valley detect regulator unit detects a sine-like DC voltage input by a rectification unit, and stores the electric energy in the storage capacitor when the input voltage is lower than a preset valley voltage. The stored electric energy converted into the system required voltage by a system power supply unit. The control and feedback unit electrically connect to the feedback controlled LED driving circuit, providing PFC, step dimming or color temperature adjustment for driving the LED light-emitting element and detecting a feedback signal of the LED driver circuit for controlling an output current of the LED driver circuit or providing protective measures.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: September 1, 2015
    Inventor: Chin-Hsin Yang
  • Patent number: 9083181
    Abstract: The present invention discloses an overcurrent protection circuit for a light source driving module and a related backlight module. The overcurrent protection circuit includes an average value overcurrent protection circuit for detecting an average voltage at a node where the switch is connected to the detection resistor and generating the turning-off signal to turn off the switch when the average voltage is larger or equal to a threshold average voltage, wherein the average voltage is formed by an average current of the switch. Through the above-mentioned mechanism, the present invention can prevent the working power of a power device from being larger than its rated power. Therefore, it also prevents the power device from catching a fire due to a potential high temperature.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: July 14, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Xianming Zhang
  • Publication number: 20150137708
    Abstract: A light control system and a light control method thereof are disclosed. The light control system is used for controlling a light-emitting device. The light control system includes an ambient status sensing module, a storage module, a controlling module, and a driver module. The ambient status sensing module is used for sensing an ambient state to generate an ambient state value. The storage module has a database for storing a plurality of parameter values, wherein the plurality of parameter values are corresponded to a plurality of ambient state values. The controlling module is used for searching the plurality of parameter values stored within the database according to the ambient state value, so as to generating a controlling signal. The driver module is used for driving the light-emitting device according to the control signal.
    Type: Application
    Filed: April 8, 2014
    Publication date: May 21, 2015
    Applicant: Gunitech Corp.
    Inventors: Chi-Jung Wang, Huan-Ruei Shiu, Po-Kuei Chou, Yueh-Chang Wu, Ming-Chuan Tsai, Ya-Chi Tseng, Yu-Feng Chen, Chien-Ju Hung
  • Patent number: 9030123
    Abstract: An illuminating apparatus includes a drive circuit that generates a drive current, and an organic light emitting panel that receives the drive current and that emits light. The drive circuit is capable of controlling a color temperature of the emitted light from the organic light emitting panel by controlling a current strength of the drive current and is capable of controlling a brightness of the emitted light according to a pulse width of the drive current.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: May 12, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Jin Choi, Yong-Han Lee
  • Patent number: 9030129
    Abstract: A preferred embodiment relates to controlling the amount of backlight power in an electronic display to account for the temperature in the backlight cavity. Another embodiment relates to a system for controlling the amount of backlight based on both the temperature of the backlight and the amount of ambient light.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: May 12, 2015
    Assignee: Manufacturing Resources International, Inc.
    Inventors: William Dunn, John Schuch, David Williams
  • Patent number: 9024543
    Abstract: The present invention relates to a method for controlling the illumination system in a temperature controlled environment, and to a control system for a temperature controlled environment having an illumination system. More specifically, the invention relates to a method wherein output of the illumination system causes a temperature response in the temperature controlled environment, the temperature response being detected by a sensor, the method comprising regulating the temperature adaptively based on the output of the illumination system and the associated temperature response.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: May 5, 2015
    Assignee: Koninklijkle Philips N.V.
    Inventor: Markus C. Vermeulen
  • Publication number: 20150115807
    Abstract: Described herein is a luminaire controller for a luminaire in which dimming signals can be provided to control the operation of the luminaire. The controller also includes an energy measurement module connected to a mains supply, a sensor module, a power switch, a central processing module and a ZigBee transceiver module. The controller, in addition to providing dimming signals in accordance with ambient lighting conditions sensed by a photocell in the sensor module provides efficient energy metering. In one embodiment, the luminaire controller is directly mountable on a luminaire which is to for control thereof.
    Type: Application
    Filed: April 27, 2012
    Publication date: April 30, 2015
    Applicant: SCHREDER
    Inventors: Helmut Schroder, Daniel Brand
  • Publication number: 20150115843
    Abstract: In a light emitting device and system providing white light with various color temperatures are provided, a light emitting device includes a light emitting element (LED) that is operated by a driving bias and emits first light, and a phosphor layer including a phosphor that partially wavelength-converts first light and emits second light, thereby emitting white light using the first light and the second light, wherein the phosphor has a maximum conversion efficiency at a first level of the driving bias, and the LED has a maximum conversion efficiency at a second level of the driving bias, the first level being different from the first level.
    Type: Application
    Filed: January 9, 2015
    Publication date: April 30, 2015
    Inventor: Yu-Sik Kim
  • Patent number: 9018839
    Abstract: An LED cooling system comprising of a Peltier cooler. The Peltier cooler comprising of a top cooling plate and bottom heating plate. The top cooling plate is capable of directly contacting an LED housing such that heat generated by an LED in the LED housing can be transferred from the LED housing by said Peltier cooler; A control circuit electrically connected to said Peltier cooler to control the amount of power is supplied to said Peltier cooler; said amount of power supplied to said Peltier cooler is determined by the temperature of said LED housing.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: April 28, 2015
    Inventor: Salvatore Guerrieri
  • Patent number: 9013106
    Abstract: Provided is a lamp ballast having a filament heating apparatus for gas discharge lamp, including a PFC converter for receiving an AC input voltage and converting the AC input voltage into a DC bus voltage; an inverter connected to an output end of the PFC converter for converting the DC bus voltage into an AC output voltage for driving gas discharge lamps; and a filament heating apparatus connected to the output end of the PFC converter. The filament heating apparatus includes an auxiliary heating circuit for converting the DC bus voltage into a heating power for pre-heating the filaments of the gas discharge lamps; and a control circuit connected to the inverter and the auxiliary heating circuit for generating an auxiliary voltage according to the heating power to activate the PFC converter.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 21, 2015
    Assignees: Delta Electronics (Shanghai) Co., Ltd., Delta Electronics, Inc.
    Inventors: Weiqiang Zhang, Qi Zhang, Yan Zhong, Ching-Ho Chou, Jianping Ying
  • Patent number: 9006992
    Abstract: Various apparatuses and methods for starting a thyristor are disclosed herein. For example, some embodiments provide an apparatus for controlling power to a load. The apparatus includes a thyristor, a secondary load switchably connected to an output of the thyristor, and a sensor connected to the secondary load. The sensor is adapted to connect the secondary load to the thyristor when the output of the thyristor falls below a predetermined level.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: April 14, 2015
    Assignee: InnoSys, Inc.
    Inventors: Laurence P. Sadwick, William B. Sackett
  • Publication number: 20150097497
    Abstract: A light emitting device including a drive transistor that generates a drive current IDR of a current amount corresponding to a gate-source voltage IDR, a light emitting element that emits light at a luminance corresponding to the current amount of the drive current, and a control unit that controls the gate-source voltage according to a specified gradation is configured as follows. The gate-source voltage varies within a range between a first voltage value or more and a second voltage value or less. A third voltage value which is a gate-source voltage when a change rate of the drive current with respect to an environmental temperature change is a predetermined value or less is a voltage value out of the range. The first voltage value is a value of the third voltage value or more, and the second voltage value is a value of the third voltage value or less.
    Type: Application
    Filed: September 24, 2014
    Publication date: April 9, 2015
    Inventor: Hitoshi OTA
  • Patent number: 9000687
    Abstract: A method for mixing light of LEDs includes following steps: Firstly, a substrate with a red light LED, a green light LED and a blue light LED arranged thereon is provided. Secondly, a power source for supplying power to the red light LED, the green light LED and the blue light LED is provided. Thirdly, a temperature variation ?T1 of the red light LED caused by the power source, a temperature variation ?T2 of the green light LED caused by the power source, a temperature variation ?T3 of the blue light LED caused by the power source are calculated. And finally, input currents applied to the red light LED, the green light LED and the blue light LED are adjusted according to the temperature variations ?T1, ?T2 and ?T3. A lighting device using the method is also provided.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: April 7, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chih-Chen Lai
  • Publication number: 20150084546
    Abstract: According to one embodiment, a dimming control system includes a luminaire and a host equipment. The luminaire receives dimming data transmitted using data frames based on a specified communication protocol, and performs dimming control of a lighting load. The host equipment uses the data frames to transmit the dimming data, and uses a part of the data frames to transmit a command to request luminaire information of the luminaire.
    Type: Application
    Filed: March 7, 2014
    Publication date: March 26, 2015
    Applicant: Toshiba Lighting & Technology Corporation
    Inventor: Hiroki Kubo
  • Patent number: 8988012
    Abstract: In a dielectric window 41 for a plasma processing apparatus, a first dielectric window recess 47 is formed on an outer region of a surface of the dielectric window 41 in a diametrical direction of the dielectric window 41 at a side where plasma is generated, and the first dielectric window recess 47 is extended in a ring shape and has a tapered shape inwardly in a thickness direction of the dielectric window 41. A multiple number of second dielectric window recesses 53a to 53g are formed between the center of the dielectric window 41 and the first dielectric window recess 47, and each of the second dielectric window recesses 53a to 53g is recessed inwardly in the thickness direction of the dielectric window 41 from the surface of the dielectric window 41.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: March 24, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Wataru Yoshikawa, Naoki Matsumoto, Jun Yoshikawa
  • Patent number: 8988011
    Abstract: An LED assembly containing separately-controllable regions of LEDs with temperature sensing devices placed to measure the temperature within each region of LEDs. When the temperature difference between two regions becomes higher than an acceptable maximum, the system may adjust the power to one or more LED regions to maintain luminance uniformity. The regions can be arranged vertically or horizontally or both. A software processor may be used to interpret the data from the temperature sensing devices and control the power sent to the various LED regions. Embodiments can be used at least in LED backlights for LCD displays or for LED displays.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: March 24, 2015
    Assignee: Manufacturing Resources International, Inc.
    Inventor: William Dunn
  • Patent number: 8981677
    Abstract: A lighting device comprises groups of solid state light emitters, a sensor and circuitry. If the emitters are illuminated, the sensor is exposed to combined light from the groups, and senses only a portion of the combined light. The circuitry adjusts current applied to at least one of the emitters based on an intensity of the light sensed. Also, a device comprising emitters, a circuit board and a sensor, at least one of the emitters being positioned on the first circuit board and the sensor being spaced from the circuit board. Also, a lighting device comprising emitters, a sensor, and circuitry which adjusts current applied an emitters based on detection by the first sensor, the circuitry comprising a differential amplifier circuit. Also, a lighting device, comprising light emitters and circuitry which adjusts current applied to only some of the emitters based on ambient temperature. Also, methods of lighting.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: March 17, 2015
    Assignee: Cree, Inc.
    Inventors: Peter Jay Myers, Michael Harris, Gerald H. Negley