Plural Load Device Systems Patents (Class 315/130)
  • Patent number: 10244594
    Abstract: Devices, methods, and systems for alternating current circuits for airfield lighting are described herein. One system includes a circuit comprising an isolation transformer, a protection hardware circuit coupled to the isolation transformer, wherein the protection hardware prevents a voltage between an electrical contact of the circuit and a ground contact from meeting or exceeding a threshold voltage, and a load coupled to the protection hardware circuit to receive electrical energy from the isolation transformer.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: March 26, 2019
    Assignee: Honeywell International Inc.
    Inventors: Nipun Kumar Chawda, Hans-Willy Schuett, Reiner Wiechert
  • Patent number: 10229802
    Abstract: A circuit arrangement is described herein. In accordance with one exemplary embodiment, the circuit arrangement includes at least one output channel configured to be operably coupled to at least one load that is to be driven by the circuit arrangement. In the at least one output channel, the circuit arrangement includes a driver circuit configured to provide a modulated output signal, a current sense circuit configured to sense a load current passing through the load, and a feedback circuit configured to receive the modulated output signal and to determine, based on the modulated output signal, at least one digital value representing an average of the load current.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: March 12, 2019
    Assignee: Infineon Technologies AG
    Inventors: Hannes Reinisch, Martin D. Graefling, Heimo Hartlieb, Michael D. Hausmann
  • Patent number: 10015381
    Abstract: An imaging system includes an illumination apparatus and imaging apparatus, and the illumination apparatus includes a light emitting unit, a movable unit including the light emitting unit, and configured to be rotatably held to a main body unit, a driving unit configured to drive the movable unit, a calculating unit configured to calculate an illumination direction of the light emitting unit, and a transmitting unit configured to transmit, to the imaging apparatus, information about a charged voltage of a capacitor for storing energy to cause the light emitting unit to emit light. The transmitting unit transmits, to the imaging apparatus, information indicating that the charged voltage of the capacitor is less than the predetermined value, when the driving unit is used to drive the movable unit to cause the calculating unit to calculate the illumination direction, even if the charged voltage of the capacitor is a predetermined value or more.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: July 3, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Junji Takai
  • Patent number: 9997048
    Abstract: Embodiments of a power failure monitoring device of a digital protection relay capable of preventing a relay operation error and a data loss by determining a power failure when an electric power voltage being detected is dropped to be equal to or less than a prestored power failure reference voltage to enable a controller to perform a power failure preparation operation are provided.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: June 12, 2018
    Assignee: LSIS CO., LTD.
    Inventor: Byung-Joon Jeon
  • Patent number: 9894736
    Abstract: A two-way communication Geographic Lighting Central Management System (GLCMS) to determine roadway lighting performance. Points, lines, polygons, etc, are used to define multiple geographic features overlaid on each other in a municipality relationships to dynamically establish street lighting performance including brightness, color temperature, and light distribution. The geographic data is accessible through a wide range of sources, and the geographic relationship between the data sources determines the lighting performance. Geographically represented features include, but are not limited to, lighting and associated infrastructure, pedestrian conflict, crime, roadway classifications, intersection classifications, lighting layouts, vehicular traffic volumes and road surface reflectance classifications.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: February 13, 2018
    Assignee: EVARI GIS CONSULTING, INC.
    Inventor: Ari Isaak
  • Patent number: 9709625
    Abstract: A method for determining power consumption of a power domain within an integrated circuit is presented. In a first step, a local power supply impedance profile (Z(f)) of this power domain is determined. Subsequently, a local time-resolved power supply voltage (U(t)) is measured while a well-defined periodic activity is executed in power domain. A set of time-domain measured voltage data (U(t)) is thus accumulated and transformed into the frequency domain to yield a voltage spectrum (U(f)). A current spectrum I(t) is calculated from this voltage profile (U(f)) by using the power supply impedance profile Z(f) of this power domain as I(t)=Ff?1{U(f)/Z(f)}. Finally, a time-resolved power consumption spectrum P(t) is determined from measured voltage spectrum U(t)) and calculated current spectrum (I(t)). This power consumption (P(t)) may be compared with a reference (Pref(t)) to verify whether power consumption within power domain matches expectations.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: July 18, 2017
    Assignee: International Business Machines Corporation
    Inventors: Martin Eckert, Roland Frech, Claudio Siviero, Jochen Supper, Otto A. Torreiter, Thomas-Michael Winkel
  • Patent number: 9594066
    Abstract: The invention provides use of one or more emitted beams of radiation (16), for example, laser beam(s), in combination with an image capturing means (14), for example, one or more video cameras and/or optical elements to detect particles (30), for example, smoke particles, located in an open space (12).
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: March 14, 2017
    Assignee: Garrett Thermal Systems Limited
    Inventors: Ron Knox, Karl Boettger, Kemal Ajay
  • Patent number: 9480130
    Abstract: A lighting system comprises a set of light sources and a remote control unit. The remote control unit comprises a user interface through which a user may identify an area in an image and a light source. The identified image area is linked with the light source and color information of the identified image area is transmitted to the light source. The light source is thereby enabled to adapt its light output to the color information. A user is thereby enabled to pick the color to be outputted by a light source by selecting an area in an image displayed on the remote control unit. The remote control unit may be part of a mobile telephone, a tablet computer, an electronic photo frame, or a television screen.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: October 25, 2016
    Assignee: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Bartel Marinus Van De Sluis, Roel Peter Geert Cuppen
  • Patent number: 9468063
    Abstract: There is provided a light source driving device including: an interface circuit configured to receive a PWM dimming instruction signal or a DALI dimming instruction signal as a dimming instruction signal and generate a serial signal in accordance with the dimming instruction signal; a dimming controller configured to determine whether the serial signal generated by the interface circuit is based on the PWM dimming instruction signal or the DALI dimming instruction signal and to generate a dimming signal according to a result of the determination; and a drive circuit configured to drive a light source according to the dimming signal generated by the dimming controller.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: October 11, 2016
    Assignee: Minebea Co., Ltd.
    Inventor: Kunihiko Hatta
  • Patent number: 9441815
    Abstract: A retrofit canopy light system is provided that has a multi-output power supply assembly in electrical communication with a plurality of luminaire assemblies through a plurality of distribution wires. In one embodiment, each luminaire assembly may receive an electric current from a respective distribution wire extending from the power supply assembly. The power supply assembly may convert high-voltage AC to low-voltage, regulated DC. Each luminaire assembly may comprise a light source and a low profile, heat-dissipating frame in thermal and mechanical communication with the light source. The heat-dissipating frame may be constructed of a thermally conductive material, and may include a plurality of heat sink fins and bars. The heat-dissipating frame may present a substantially flat surface configured for flush mounting adjacent to an existing canopy fixture.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: September 13, 2016
    Assignee: Lighting Science Group Corporation
    Inventors: Fredric S. Maxik, David E. Bartine, James Lynn Schellack, Addy S. Widjaja
  • Patent number: 9198248
    Abstract: An LED lighting device comprises an LED light source unit; a light intensity control unit configured to provide a light intensity control signal for controlling a light intensity through a plurality of steps in a light intensity control mode; and a light source driving unit configured to provide power to the LED light source unit according to the light intensity control signal.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: November 24, 2015
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Yong Geun Kim, Jin Seok Hong, Jung Hee Seo
  • Patent number: 9140436
    Abstract: A configurable ceiling lighting system for a grid ceiling comprising at least one and preferably a plurality of driver panels having a bottom and a defined perimeter sized to allow the driver panel to be set into and retained within the grid openings of a ceiling grid. The driver panel has at least one and preferably a plurality of electrical connectors accessible from the bottom of the driver panel. At least one and preferably a plurality of light modules are provided having a light source and an electrical connector complimentary to the electrical connectors of the panel drivers. The light modules can be operatively connected to the bottom of the ceiling panel drivers at selected connection points to produced desired arrays of ceiling lighting fixtures to meet particular lighting needs.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: September 22, 2015
    Assignee: ABL IP Holding, LLC
    Inventors: Min-Hao Michael Lu, Peter Y. Y. Ngai, Michael Trung Tran, Jeannine M. Fisher
  • Patent number: 9055651
    Abstract: A light source includes an operating time accumulator (i.e., counter or timer). The light source is operable to be powered by a driver circuit. The light source may be included in a light fixture or independently housed. The light source includes a controller integrally connected with a light emitting diode (LED) of the light source. Whenever the LED is receiving power from the driver circuit, the controller receives power from the driver circuit and accumulates an operating time in a nonvolatile memory of the controller. The nonvolatile memory includes blocks of bits arranged in a hierarchy. All of the bits of any block are in the same level of the hierarchy.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: June 9, 2015
    Assignee: Universal Lighting Technologies, Inc.
    Inventors: Christopher Radzinski, John J. Dernovsek
  • Publication number: 20150123545
    Abstract: A behavior management system includes a lighting system formed of a light source, a first detector, a second detector, a controller, a storage device and an output device. The light source is configured to light a display space for displaying articles and a passage space facing the display space. The first detector is configured to detect human presence or absence in the passage space. The second detector is configured to detect whether a human passes through or stops in the passage space. The controller is configured to control the light source based on detection results by the first and second detectors. The storage device is configured to store histories of detection results by the first and second detectors. The output device is configured to supply an external management device with histories of detection results by the first and second detectors stored in the storage device.
    Type: Application
    Filed: October 20, 2014
    Publication date: May 7, 2015
    Inventor: Shigemi FUSHIMI
  • Publication number: 20150069915
    Abstract: A method for controlling a communications terminal is provided. The method includes causing a computer included in the communications terminal to store first illumination setting information and second illumination setting information in the memory; causing the computer of the communications terminal to transmit, at a certain illumination start time at which the illumination device is to be turned on, a first control signal corresponding to the first illumination setting information to the illumination device such that the illumination device is set to the first illumination state; and causing the computer of the communications terminal to transmit, in a case where the sensor senses a motion of the communications terminal after the certain illumination start time has passed, a second control signal corresponding to the second illumination setting information to the illumination device such that the illumination device is set to the second illumination state.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 12, 2015
    Inventors: KENTO OGAWA, TORU TANIGAWA
  • Patent number: 8946996
    Abstract: An LED-based light tube for use in a conventional fluorescent fixture includes a housing including a light transmitting portion, at least one electrical connector attached to the housing and configured for engagement with the conventional fluorescent fixture, at least one LED arranged to produce light in a direction toward the light transmitting portion, a sensor operable to detect a brightness level and output a signal corresponding to the detected brightness level, and a controller in electrical communication with the at least one electrical connector, operable to: compare the signal to a predetermined value corresponding to a desired brightness level and control an amount of power provided to the at least one LED in response to the signal to adjust the light produced by the at least one LED to achieve the desired brightness level.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: February 3, 2015
    Assignee: iLumisys, Inc.
    Inventors: John Ivey, David L Simon
  • Publication number: 20150022090
    Abstract: A foldable display apparatus, a method of manufacturing the same, and a controlling method of the same are disclosed. The foldable display apparatus includes a substrate including a metal thin film and an insulating layer provided on the metal thin film, an organic light-emitting unit formed on the substrate and emitting light in an direction away from the substrate, and a thin film encapsulating layer for encapsulating the organic light-emitting unit. The foldable display apparatus may be folded in a direction such that the metal thin film is exposed.
    Type: Application
    Filed: December 6, 2013
    Publication date: January 22, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hyeong-Gwon KIM
  • Patent number: 8907570
    Abstract: Disclosed herein are a system and a method for controlling lighting. In the lighting control system, one or more lighting devices are installed in a separate area within a building and a remote controller generates a scheduling data by setting lighting scenes at each time and controls the lighting of the corresponding lighting device via a short range wireless communication. In addition, the remote controller transmits the scheduling data to a remote server through a gateway and when the remote controller is not normally operated, the remote server controls the lighting device according to the scheduling data through the gateway.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: December 9, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Heui Sam Kwag, Chang Seob Kim, Jung Hwan Park, Ho Chan Cho
  • Patent number: 8878440
    Abstract: An illumination system can provide at least a first state and a second state of a luminaire equipped with at least one lighting subsystem. In the first state, the luminous intensity of the lighting subsystem is controlled based on the occurrence of a detected solar event or the occurrence of an expected solar event. In the second state, the luminous intensity of the lighting subsystem forms a visually distinct pattern based on the detection of atmospheric electrical activity exceeding a defined threshold by an electrical activity sensor disposed within the luminaire. The visually distinctive luminous output can alert persons within line of sight of the luminaire of the proximity of threatening atmospheric electrical activity.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: November 4, 2014
    Assignee: Express Imaging Systems, LLC
    Inventor: William G. Reed
  • Publication number: 20140320019
    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: Application
    Filed: May 8, 2013
    Publication date: October 30, 2014
    Applicant: Phoseon Technology, Inc.
    Inventor: Jeff Smith
  • Publication number: 20140300275
    Abstract: A dimmer switch for controlling the amount of power delivered to and thus the intensity of a lighting load comprises a visual display operable to provide a visual indication representative of energy savings and usage information. The dimmer switch comprises an intensity adjustment actuator, such as a slider knob or a rotary knob, which may be coupled to a potentiometer for adjusting the amount of power delivered to the lighting load. The potentiometer may comprise a dual potentiometer including a resistive element and a conductive element having a cut. The visual display may comprise a single visual indicator, which may be illuminated a first color, such as green, when the intensity of the lighting load is less than or equal to the eco-level intensity, and illuminated a second different color, such as red, when the intensity of the lighting load is greater than the eco-level intensity.
    Type: Application
    Filed: June 20, 2014
    Publication date: October 9, 2014
    Inventors: Gregory Altonen, Elliot G. Jacoby, Joel S. Spira
  • Publication number: 20140239815
    Abstract: The invention provides a method and system for controlling a streetlight lighting operation. The system includes a plurality of streetlights, pole controllers associated with one or more streetlights and segment controller for a set of streetlights. The segment controller is configured to generate control signals based on control criterion that are translated as commands to the pole controllers to operate the streetlights. The operation of streetlights includes switching on, switching off or dimming of the streetlights. The method described herein also includes receiving feedback from the pole controllers that is useful for monitoring and maintenance operations.
    Type: Application
    Filed: August 6, 2013
    Publication date: August 28, 2014
    Applicant: Power One Data International, Inc.
    Inventors: Michael McGOWAN, Sameer PATIL, Mahesh H. KALAIAH
  • Publication number: 20140239816
    Abstract: Lighting control systems and a method of control the same are provided. For example, the lighting control system includes at least one lighting device transmitting and receiving a wireless communication signal and controlled by a received wireless communication signal, a lighting device authentication code including unique identification information assigned to the lighting device, and a user terminal having an image recognition unit, the user terminal configured to recognize the lighting device authentication code using the image recognition unit, extract the unique identification information from the lighting device authentication code recognized by the image recognition unit, pair the user terminal with the lighting device based on the extracted unique identification information, and control the at least one lighting device.
    Type: Application
    Filed: September 23, 2013
    Publication date: August 28, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Gon LEE, Ki Young KIM, Yong Min JUNG
  • Patent number: 8786195
    Abstract: Driving a light-emitting element by a driver capable of testing at least an open or short condition of the light-emitting element. In particular, a driving signal is generated to drive the light-emitting element. It is evaluated based on the value of the driving signal whether a predetermined condition is reached. If so, a latch signal is output indicating that the testing has finished.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: July 22, 2014
    Assignee: STMicroelectronics S.r.l.
    Inventors: Sergio Castiglia, Roberto La Rosa
  • Publication number: 20140197744
    Abstract: Provided is an organic light emitting display device including: a display unit including a plurality of pixels, each pixel of the pixels including an organic light emitting diode; and a test circuit configured to apply a first signal and a second signal to the display unit and to receive a third signal from the display unit. The test circuit is configured to determine whether or not the display unit is in a normal state based on a voltage level of the third signal when the first and second signals have a first level.
    Type: Application
    Filed: June 24, 2013
    Publication date: July 17, 2014
    Inventors: Young Woo Choi, Kwangsae Lee
  • Publication number: 20140175985
    Abstract: A multi-sensor lighting control system includes at least two light sensors. Each sensor gathers light from different sources, by comparing and contrasting the output signals from the two sensors, the controller can automate many lighting control and commissioning processes leading to easier, simpler installations and maintenance and happier customers, and removing the need for special tools. Applying automated closed loop lamp warm-up techniques, the daylight ratio and the maximum electric light contribution can be learned automatically by the system. A multi-sensor lighting control system may also provide intermediate zones of lighting control between adjacent task areas with different lighting requirements.
    Type: Application
    Filed: December 10, 2013
    Publication date: June 26, 2014
    Applicant: The Watt Stopper, Inc.
    Inventors: Richard R. Billig, Thomas L. Grey
  • Publication number: 20140159585
    Abstract: The power consumption of a switch-mode power converter can be determined based upon at least one of a converter drive signal pulse width or a converter drive signal frequency. Such power consumption can be determined using an algorithm providing a functional relationship between switch-mode power converter power consumption and at least converter drive signal pulse width or frequency. Such algorithms can be either calculated using known component values or empirically determined. Such power consumption may also be determined using store power consumption data in a data store that is indexed by at least one of the converter drive signal pulse width or frequency.
    Type: Application
    Filed: November 7, 2013
    Publication date: June 12, 2014
    Inventor: William G. Reed
  • Patent number: 8742673
    Abstract: A usage time correcting engine, and corresponding method, system, apparatus, and computer product are provided. Over a period of time that an LED lighting fixture is being used to provide light, a usage time correcting engine indirectly measures an internal temperature of a component of the fixture. The indirect measurement is based on a measured external temperature of the component and power output supplied to or provided by the component. The usage time correcting engine determines a multiplier as a function of the indirectly measured internal temperature. The usage time correcting engine multiplies the period of time by the multiplier to provide a corrected measurement of usage of the component. In some examples, the usage time correcting engine determines a remaining lifetime of the LED lighting fixture from the corrected measurement and then reports the remaining lifetime to a user by way of a log, flashing light or other notification/indication.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: June 3, 2014
    Assignee: Lumenpulse Lighting, Inc.
    Inventor: Gregory Campbell
  • Publication number: 20140062307
    Abstract: A monitoring system is configured to manage lumen depreciation in a lighting fixture and includes an optic housing, a light source with a light-emitting diode (LED), a processor, and a memory device. The memory device stores instructions that cause the monitoring system to measure elapsed time during which the LED light source emits the light and, based on the elapsed time, determine a current level of the emitted light. In response to the current level changing from an acceptable level to an unacceptable level, an alert is provided to show that the emitted light has reached the unacceptable level. A reset input is received to remove the alert for a predetermined period of time. Changes in status of the LED light source are indicated.
    Type: Application
    Filed: August 30, 2012
    Publication date: March 6, 2014
    Applicant: Juno Manufacturing, LLC
    Inventors: Charles Jeffrey Spencer, John G. Serra, Martin Lee
  • Patent number: 8665114
    Abstract: The present invention provides a display for traffic control within a region of traffic flow, comprising an array of lights arranged for illumination to indicate to traffic seeking to negotiate the region in accordance with a first path of travel the likely movement of traffic seeking to negotiate the region in accordance with a second path of travel different from the first, and thus whether said traffic seeking to negotiate the region in accordance with said second path of travel has a right of way over traffic seeking to negotiate the region in accordance with said first path of travel.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: March 4, 2014
    Inventor: Derek Cozens
  • Publication number: 20140035464
    Abstract: A network device includes an LED interface that exhibits behaviors corresponding to detected events. In a first mode, at least one from a set of predefined event behaviors are selected for the LED interface. The behaviors are responsive to pre-programmed criteria. In a second mode, a new event behavior is implemented for the LED interface in response to criteria not included in the pre-set criteria.
    Type: Application
    Filed: July 31, 2012
    Publication date: February 6, 2014
    Inventors: David L. Santos, Giuseppe Scaglione
  • Publication number: 20140028196
    Abstract: A control unit controls an operation of an electric power conversion unit so that load current that flows through a light source load becomes a constant value, using electric power setting value that is used to determine a size of electric power that is supplied to the light source load and a current detection value that is detected by a current detection resistor (current detection unit), and a load electric power calculation unit obtains load electric power of the light source load using the electric power setting value and a voltage detection value that is detected by a voltage detection unit, and an input electric power estimation unit corrects a circuit loss for the obtained load electric power and estimates input electric power.
    Type: Application
    Filed: July 17, 2013
    Publication date: January 30, 2014
    Inventors: Hisaya TAKIKITA, Masafumi YAMAMOTO, Katsunobu HAMAMOTO
  • Patent number: 8588995
    Abstract: A vehicle control device mounted on a vehicle for performing communication with a mobile device and performing predetermined control in accordance with communication contents with the mobile device, having a locking operation unit that locks or unlocks doors of the vehicle, interior signal transmitting and receiving units that detect a position of the mobile device left in an interior of the vehicle in a case where a locking operation is performed by the locking operation unit, and an interior lamp drive control unit that lights an interior lamp among a plurality of interior lamps provided in the interior of the vehicle, the interior lamp being close to the position of the mobile device based on information of the position detected by the interior signal transmitting and receiving units.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: November 19, 2013
    Assignee: Omron Automotive Electronics Co., Ltd.
    Inventor: Tatsuki Nagata
  • Publication number: 20130300296
    Abstract: The invention comprises a method for indicating that an LED flash light for an aircraft such as an anti-collision or beacon or strobe LED light has reached a near-end-of-life status, wherein the LED flash light under normal operational condition within a given time interval generates a predetermined number of normal flashes with the number being one or more than one, e.g. two. The method comprises the steps of determining the actual photometric condition of the LED flash light, and comparing the actual photometric condition to a given condition in a normal flashing mode. If the actual condition deviates from the given condition by more than a predetermined amount, the LED flash light is operated in order to generate within the given time interval one additional near-end-of-life-indicating flash.
    Type: Application
    Filed: May 9, 2013
    Publication date: November 14, 2013
    Applicant: Goodrich Lighting Systems GmbH
    Inventor: Bernhard Mueller
  • Patent number: 8581499
    Abstract: There is provided a method of determining the state of a signal lamp. The method includes receiving time series data corresponding to an electrical signal used to power a signal lamp. The state of the signal lamp can switch from one of the following states to another of the following states: an on state, an off state, and a flashing state. The method also includes determining the state of the signal lamp, based at least in part on both the time series data and an amplitude value of the electrical signal relative to an amplitude-change threshold value over a determined number of amplitude changes.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: November 12, 2013
    Assignee: General Electric Company
    Inventors: Jeffrey Michael Fries, Jeffery Armstrong, Robert N. Bettis, Gregory Keith Hann, Hsien-Kuo Lin, Steve R. Murphy, Daniel G. Penny, III, Eric Vorndran
  • Publication number: 20130285556
    Abstract: A policy-based OLN (outdoor lighting network) light management system including a central control apparatus (40); lighting unit control apparatus (50); a communication system (60) operably connecting the central control apparatus (40) and the lighting unit control apparatus (50); and a repository (70) in communication with the central control apparatus (40), the repository (70) being operable to store an OLN policy. The central control apparatus (40) is operable to: receive a policy; check the policy for consistency against the OLN policy; determine attributes and configuration commands for each of the lighting unit control apparatus (50) in accordance with the policy when the policy is consistent with the OLN policy; and communicate the attributes and the configuration commands for each of the lighting unit control apparatus (50) to a corresponding one of the lighting unit control apparatus (50).
    Type: Application
    Filed: December 19, 2011
    Publication date: October 31, 2013
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Kiran Srinivas Challapali, Dave Alberto Tavares Cavalcanti, Jianfeng Wang, Hongqiang Zhai
  • Patent number: 8558463
    Abstract: An apparatus to detect faulty connection of LED (open/short conditions) which may affect the function of LED display panel is presented. The apparatus basically controls the switches through control algorithm circuit to get the information of LED driver output pins voltage and compare them with two reference voltages to determine the open/short condition of individual LED.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: October 15, 2013
    Assignees: Panasonic Corporation, Panasonic Semiconductor Asia Pte. Ltd.
    Inventors: Etsuji Sato, Chun Kiong Leslie Khoo, Jiong Fu, Maung Zabu Ko, Shuang Zhang, Muhammad S/O Abuturab
  • Publication number: 20130264945
    Abstract: A method of driving a light-emitting diode (LED) light load is disclosed herein. The method includes the step of driving an LED light load in a plurality of different modes. Each mode is defined by at least one of constant current and constant voltage delivered by a power supply. In the exemplary embodiment disclosed herein, each mode can be defined by at least one of constant current and constant voltage and by at least one of variable current and variable voltage.
    Type: Application
    Filed: April 4, 2013
    Publication date: October 10, 2013
    Inventors: AL SMITH, FREDERIC GRAHAM
  • Patent number: 8547023
    Abstract: A light emitting diode (LED) light source module includes a circuit substrate, a driving IC electrically coupled to the circuit substrate and having at least one input terminal and an output terminal, an LED coupled onto the circuit substrate and electrically coupled to an output terminal of the driving IC, and a packaging layer, having a transparent structure shaped by a colloidal solidification, such that the transparent structure is covered outside the driving IC and LED, and the LED light source module covers the driving IC and LED by the transparent structure of the packaging layer, and serves as a light source module of a lamp directly without the need of installing another driving IC to the lamp, and promotes its extensive use in LED lamps.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: October 1, 2013
    Assignee: Rui Teng Opto Technology Co., Ltd.
    Inventors: Chih-Yang Chang, Su-Wen Lai
  • Patent number: 8531116
    Abstract: A light source driving apparatus for implementing general purpose driving of a high-current light emitting diode (LED) and a low-current LED, and a method for driving the same are disclosed. The apparatus for driving the light source includes a plurality of light emitting diode (LED) strings, and a light emitting diode (LED) driving circuit for driving the LED strings, and having a plurality of channels commonly connected to the same LED string.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: September 10, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Byung-Sam Min, Ja-Young Pyun
  • Patent number: 8531114
    Abstract: An illumination beacon including a housing including a transparent top surface and a transparent bottom surface. An upper mounting member is supported within the housing proximate the transparent top surface, and a lower mounting member supported within the housing proximate the transparent bottom surface. An upper light source is supported by the upper mounting member and oriented to project light upwardly through the transparent top surface, and a lower light source is supported by the lower mounting member and oriented to project light downwardly through the transparent bottom surface. A battery is received within the housing intermediate the upper mounting member and the lower mounting member. A power management system is operably coupled to the battery.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: September 10, 2013
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Kyle W. Deckard, Alexander M. Soles
  • Publication number: 20130221851
    Abstract: A simple ambient light detection method that uses the same Light Emitting Diode both for illumination and for ambient light detection by alternatively forward and reverse biasing the Light Emitting Diode. The invention may be implemented without any additional hardware components when incorporated in a digital Light Emitting Diode driver circuit.
    Type: Application
    Filed: February 28, 2012
    Publication date: August 29, 2013
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Keven D. Coates
  • Publication number: 20130214686
    Abstract: A monitoring device includes a sensing element, a first switch element, a second switch element, and a warning unit. Brightness of a screen on a display unit is sensed by the sensing element. When the brightness of the screen on the display unit is not greater than a predetermined brightness, the first switch element will be turned on to turn on the second switch element so that the warning unit can be activated. Therefore, the display state of the screen can be monitored automatically.
    Type: Application
    Filed: July 21, 2012
    Publication date: August 22, 2013
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD .
    Inventor: XIAO-LIAN HE
  • Publication number: 20130193853
    Abstract: A light emitting system in which a light emission control apparatus wirelessly communicates with at least one controlled light emitting apparatus, the controlled light emitting apparatus comprising a first transmission unit which wirelessly transmits charging state information to the light emission control apparatus, and the light emission control apparatus comprising a receiving unit which receives the charging state information from the controlled light emitting apparatus, an informing unit which informs the image capture apparatus that a charging operation is complete, a second transmission unit which transmits a signal to stop transmitting charging state information, and a third transmission unit which transmits a light emission command to the controlled light emitting apparatus.
    Type: Application
    Filed: January 24, 2013
    Publication date: August 1, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: CANON KABUSHIKI KAISHA
  • Publication number: 20130162140
    Abstract: A first LED emits visible light of an emission color such that with respect to a CIE(1976)L*u*v* color space chromaticity diagram, the chromaticity is exterior to a prescribed white light region wherein the absolute value of a deviation duv from the blackbody radiation locus is at most 0.02 and the color temperature is within a range of from 2,500K to 10,000K, and the deviation duv from the blackbody radiation locus is larger than 0.02, and a second LED emits visible light of an emission color such that with respect to the above chromaticity diagram, the chromaticity is exterior to the prescribed white light region, and the deviation duv from the blackbody radiation locus is smaller than ?0.02.
    Type: Application
    Filed: February 19, 2013
    Publication date: June 27, 2013
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: MITSUBISHI CHEMICAL CORPORATION
  • Publication number: 20130162145
    Abstract: An electronic device, including a battery, a port for connecting a battery charger to charge the battery, a light emitter, and a sensor connected to the light emitter, for activating the light emitter when the sensor detects one or more vicinity light requirements indicating a need for light in the environment of the sensor, and for deactivating said light emitter when the battery charger is successfully connected to the port.
    Type: Application
    Filed: February 7, 2013
    Publication date: June 27, 2013
    Inventors: Uri Ron, Eyal Bychkov
  • Patent number: 8436540
    Abstract: A multi-lamp driving system includes a pulse width modulation (PWM) controller, transformers, a current difference detection circuit, a lighting detection circuit, a frequency scanning detection circuit, a frequency regulating circuit, and a duty cycle regulating circuit. The current difference detection circuit detects difference among current flowing through lamps to determine if the current fluctuates. The lighting detection circuit determines if the lamps are lit according to the current, and generates a lighting indication signal after the lamps are lit. The frequency scanning detection circuit determines if the multi-lamp driving system is in a frequency scanning process according to the lighting indication signal, and generates a frequency scanning indication signal if the multi-lamp driving system is in the frequency scanning process.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: May 7, 2013
    Assignee: Ampower Technology Co., Ltd.
    Inventors: Chin-Po Cheng, Yong-Long Lee
  • Publication number: 20130099670
    Abstract: An apparatus for LED string short circuit detection constituted of: a constant current drive circuit; a plurality of LED strings, a first end of each of the plurality of LED strings coupled to a common output of the constant current drive circuit; a first sense resistor coupled between a second end of each of the plurality of LED strings and a chassis; a second sense resistor coupled between the chassis and a return of the constant current drive circuit; and a comparing circuit arranged to compare the amount of current flow through the first sense resistor with amount of current flow through the second sense resistor, the comparing circuit arranged to assert a fault signal in the event that the amount of current flow through the second sense resistor exceeds the current flow through the first sense resistor by a predetermined minimum value.
    Type: Application
    Filed: October 16, 2012
    Publication date: April 25, 2013
    Applicant: MICROSEMI CORPORATION
    Inventor: Microsemi Corporation
  • Publication number: 20130093328
    Abstract: An LED-based light tube for use in a conventional fluorescent fixture includes a housing including a light transmitting portion, at least one electrical connector attached to the housing and configured for engagement with the conventional fluorescent fixture, at least one LED arranged to produce light in a direction toward the light transmitting portion, a sensor operable to detect a brightness level and output a signal corresponding to the detected brightness level, and a controller in electrical communication with the at least one electrical connector, operable to: compare the signal to a predetermined value corresponding to a desired brightness level and control an amount of power provided to the at least one LED in response to the signal to adjust the light produced by the at least one LED to achieve the desired brightness level.
    Type: Application
    Filed: November 30, 2012
    Publication date: April 18, 2013
    Applicant: ILUMISYS, INC.
    Inventor: ILUMISYS, INC.
  • Publication number: 20130088152
    Abstract: Improved lighting fixtures are described each of which having its own dimming or intensity control capability that allows for providing the desired lighting output or luminous flux, at each of the fixtures. This capability can be embodied in a dimming device at each fixture that can be manually or wirelessly operated. The present invention is particularly applicable to low voltage landscape or architectural lighting systems, and allows for customizing of the system to meet the particular application. The present invention also allows for tuning of the output for each fixture to compensate for variations in emission.
    Type: Application
    Filed: March 30, 2012
    Publication date: April 11, 2013
    Inventor: DOUGLAS W. HAGEN