Plural Switches Patents (Class 315/320)
  • Patent number: 11758635
    Abstract: The invention relates to a luminaire network, comprising a plurality of luminaires comprising a lighting apparatus, wherein a plurality of the luminaires comprise a communication unit configured to enable communication of data between said plurality of luminaires and/or with a central unit; a processing unit; a control unit configured to control the lighting apparatus as well as the communication and processing units and at least one first sensor configured to output first sensed data. The processing unit of the luminaire is configured to process the first sensed data to produce first processed data, and the luminaire network is further configured such that the first processed data of at least two luminaires is further processed to produce second processed data. The invention further relates to a method of processing sensor data in a luminaire network.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: September 12, 2023
    Assignee: Schreder S.A.
    Inventors: Laurent Secretin, Junaid Aslam
  • Patent number: 10687406
    Abstract: Systems and methods are provided relating to a smart lightbulb that can comprise means to sense motion and means to wirelessly transmit and receive information. The smart lightbulb can include a radio frequency transceiver and a motion sensor having an antenna. The transceiver and motion sensor can be electrically coupled to a programmable processor. The transceiver can be oriented in a first plane and the antenna of the motion sensor can be oriented in a second plane different than the first plane. In some embodiments, an oscillator circuit can be provided in place of the motion sensor antenna. The oscillator circuit can be electrically coupled to the transceiver, the motion sensor, and communication circuitry. The programmable processor can be configured to direct the oscillator circuit to switch between electrically coupling the motion sensor to the radio frequency transceiver and electrically coupling the communication circuitry to the radio frequency transceiver.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: June 16, 2020
    Inventor: James Andrew Nimmer
  • Patent number: 10588192
    Abstract: Provided is a light fixture comprising: a) a body; b) a plurality of two or more different colored LED (Light emitting Diodes) light sources; and c) a switch for powering the colored LEDs; wherein the light fixture can be operated in at least two different mode, with a user having an option of change position of the switch to choose to power the LED with a first color or the LED with a second color. Provided is a light fixture comprising: a) a body; and b) on or more LED boards, each board having a plurality of first and a second colored LED light source, the two colors configured to blend to form a third color; c) a switch configured to allow a user to choose between powering the first light source, the second light source or both; wherein the user has the option to power the first light source only, the second light source only, or both the first and the second light source to produce a blended color that is different than the first and the second color.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: March 10, 2020
    Inventor: Hamid Rashidi Doust
  • Patent number: 9035568
    Abstract: A display circuit includes a first pulse width modulated (PWM) signal line coupled to a first switch, a second PWM signal line coupled to a second switch and the signal line, a transistor coupled to the second signal line between the first signal line and the second switch, a third switch coupled to a third PWM signal line, a fourth switch coupled to a fourth PWM signal line, a fifth switch coupled to a fifth PWM signal line, a light emitting diode (LED) including a red element coupled between the first and third switches, a green element coupled between the first and fourth switches, and a blue element coupled between the first and fifth switches, and an LED including a red element coupled between the second and third switches, a green element coupled between the second and fourth switches, and a blue element coupled between the second and fifth switches.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: May 19, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Robert B. Ganton, James V. Pieronek, Rajeev D. Rajan
  • Patent number: 8922124
    Abstract: Disclosed herein is a remotely adjustable lighting system with security features. The lighting system includes a lamp (e.g., luminaire) which carries solid-state light sources and a sensor. The solid-state light sources emit visible light at an adjustable output intensity. The sensor is responsive to line-of-sight wireless signals, and the lamp increases and decreases the output intensity of the light sources in response to output signals of the sensor. The lamp provides security features by selectively accepting and rejecting instructions carried by the line-of-sight wireless signals to vary the output intensity of the light sources.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: December 30, 2014
    Assignee: Express Imaging Systems, LLC
    Inventors: William G. Reed, Dale H. DeGraff
  • Publication number: 20140285116
    Abstract: In one example implementation in accordance with the present disclosure, a process is provided. The process includes entering a first mode of operation where a plurality of light sources are permitted to illuminate. The process further includes entering a second mode of operation where the plurality of light sources associated with the first switch are not permitted to illuminate, and where the entering of the second mode of operation is in response to not detecting a presence for a time period. The process still further includes entering a third mode of operation in response to receiving a command, where only a subset of the plurality of light sources are permitted to illuminate and the remainder of the plurality of light sources are not permitted to illuminate.
    Type: Application
    Filed: March 21, 2013
    Publication date: September 25, 2014
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Kay Seah Ng, Kay Hoe Ng, Chee How Lee
  • Publication number: 20140285117
    Abstract: According to one embodiment, a lighting baton includes at least one relay to switch between ON and OFF of power supply to at least one LED lighting load based on a control signal from outside.
    Type: Application
    Filed: September 10, 2013
    Publication date: September 25, 2014
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Hiromi Matsumoto, Akinori Imahashi
  • Patent number: 8841857
    Abstract: A driving circuit includes a plurality of light-emitting units, a plurality of switches, and a bias current module, wherein the light-emitting units are coupled with each other in series and are driven with an input voltage varying according to a frequency. Each switch has a reference voltage and a critical activation voltage and includes a light-emitting end and a bias end opposite to the light-emitting end, wherein the light-emitting end is coupled with the light-emitting units, and the bias ends of the switches are coupled with each other. The bias current module is coupled with the bias ends of the switches and has an operating bias voltage varying according to the frequency, wherein each switch is driven to be activated or to be deactivated according to a relation of the critical activation voltage and a difference between the reference voltage and the operating bias voltage.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: September 23, 2014
    Assignee: Raydium Semiconductor Corporation
    Inventors: Chih-Wei Chu, Yung-Hsiang Yang, Shu-Kuang Chou
  • Patent number: 8803446
    Abstract: The lighting apparatus in accordance with the present invention includes a dimming control unit configured to control, in accordance with a dimming ratio, a light source including a plurality of light emitting elements designed to emit light in response to DC power. The dimming control unit is configured to, when the dimming ratio falls within a first dimming range, vary supply power to the light source in accordance with the dimming ratio. The dimming control unit is configured to, when the dimming ratio falls within a second dimming range different from the first dimming range, vary, in accordance with the dimming ratio, a lighting number defined as the number of the light emitting elements to be lit.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: August 12, 2014
    Assignee: Panasonic Corporation
    Inventor: Shingo Masumoto
  • Patent number: 8803431
    Abstract: A light emitting diode luminance system includes a first power source, a voltage divider, a first switch, a clamping device, a plurality of current sources and a feedback circuit. The voltage divider is coupled to the first voltage source. The first switch is coupled to the voltage divider and a ground. The clamping device includes a plurality of transistors each coupled to a respective set of light emitting diodes and the voltage divider. The plurality of current sources is coupled to the plurality of transistors respectively. The feedback circuit is coupled to the plurality of transistors and the plurality sets of light emitting diodes.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: August 12, 2014
    Assignee: IML International
    Inventors: Yung-Hsin Chiang, Yi-Mei Li
  • Patent number: 8803452
    Abstract: A light source comprises a heat-sink having a mounting region, and heat-dissipating fins, a base housing having an inner cavity and coupled to the heat-sink, and an integrated lighting module including: a printed circuit board; an LED on a substrate coupled to the printed circuit board within a first lateral region of the printed circuit board, and an electronic driving circuit for providing power to the LED and coupled to the printed circuit board within a second lateral region of the printed circuit board, wherein a bottom surface of the substrate is thermally coupled to the mounting region of the heat-sink, and wherein the second lateral region of the integrated lighting module is located within the inner cavity of the base housing.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: August 12, 2014
    Assignee: Soraa, Inc.
    Inventors: Frank Tin Chung Shum, Clifford Jue
  • Patent number: 8779688
    Abstract: A light emitting diode driving circuit includes connected driving units, each of which is configured for driving multiple channels of light emitting diodes generating a feedback voltage for the corresponding driving unit. Each of the driving units includes a selection circuit for comparing the feedback voltage with an input voltage to output a smaller one of the feedback voltage and the input voltage to a next one of the driving units, as the input voltage for the next one of the driving units.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: July 15, 2014
    Assignee: Himax Analogic, Inc.
    Inventor: Kuan-Jen Tseng
  • Patent number: 8760076
    Abstract: A pulse width modulation (PWM) dimming circuit comprises a switch unit, a current generation unit, a mirror current source, a multi-path output unit, a plurality of current balance units and a plurality of LED lamp strings. The switch unit receives a PWM signal which controls the switch on or off. The current generation unit is connected with the switch unit and generates a current of a predetermined magnitude when the switch unit is on. The mirror current source is connected with the current generation unit and receives the current to generate a mirror current. The multi-path output unit is connected with the mirror current source and receives and output the mirror current in multiple paths. The current balance units are connected between the multi-path output unit and the LED lamp strings respectively. The PWM dimming circuit decreases both the difficulty and the manufacturing cost and is easy to operate.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: June 24, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Xinming Gao
  • Publication number: 20140152195
    Abstract: The invention provides a method for overcoming excessively high temperature of a constant current driving chip and an LED light bar driving circuit. The method includes (1) providing dual-channel constant current driving chips, each including first and second input pins, first and second output pins, and a control pin; (2) providing LED light bars, resistors, a control source, and a power source; (3) connecting ends of one light bar to the power source and the first input pin, connecting ends of another light bar to the power source and the second input pin, connecting ends of one resistor to the first output pin and grounding, connecting ends of another resistor to the second output pin and grounding, and connecting the control source to the control pin; (4) repeating step (3) until the light bars are connected; and (5) activating the control source and the power source to drive the light bars.
    Type: Application
    Filed: November 25, 2012
    Publication date: June 5, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co., LTD
    Inventors: Hua Zhang, Fei Li
  • Patent number: 8742686
    Abstract: The present application is generally directed to systems and methods for control and management of lighting components connected in a network. A user specified rule is executed to control lighting effects in a lighting network which comprises an interface module in communication with one or more lighting control modules. The interface module may receive a rule for controlling a lighting network. The rule may comprise a user identified input and a user specified lighting effect to occur responsive to the user identified input. The interface module detects receipt of the user identified input and executes the rule to trigger the user specified lighting effect via the one or more lighting control modules.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: June 3, 2014
    Assignee: Integrated Illumination Systems, Inc.
    Inventors: Thomas Lawrence Zampini, II, Mark Alphonse Zampini
  • Publication number: 20140023399
    Abstract: A light-emitting device includes: plural light-emitting chips each having plural light-emitting elements, and each being designated, as a control target for lighting up or not lighting up, by two to Q designation signals (Q is an integer of two or more); and a selection signal generating part that selectively transmits P selection signals (P is an integer of three or more where P>Q) as the designation signals to designate each of the plural light-emitting elements as the control target, the designation signals for each of the plural light-emitting chips including a combination of two to Q selection signals taken from the P selection signals.
    Type: Application
    Filed: September 20, 2013
    Publication date: January 23, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Seiji OHNO
  • Patent number: 8624509
    Abstract: A LED tube includes a translucent or fluorescent tube of substantially the shape and size of a fluorescence tube, inside which one or more LED components and a current control unit are installed. At both ends of the LED tube, there is a pair of contact pins for connecting the light element mechanically and electrically to the tube holders of the fluorescence tube lighting fixture. The tube lamp has a safety unit arranged to prevent a voltage from transferring through the tube lamp from its one end to the other until a voltage supplied from the corresponding tube holder of the lighting fixture to the pair of contact pins has been separately detected at each end of the tube lamp. Inside the LED tube, there is at least one optical line that is arranged to transfer a control or measurement signal associated with the safety unit from one end of the LED tube to the other without capacitive leakage currents.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: January 7, 2014
    Assignee: Teknoware Oy
    Inventors: Yrjö Hartikka, Jouko Kuisma
  • Patent number: 8610361
    Abstract: A LED tube includes a substantially fluorescent-tube-shaped and fluorescent-tube-sized translucent or fluorescent tube having one or more LED components and a current control unit installed therein. Both ends of the LED tube are provided with a pair of contact pins for connecting the LED tube mechanically and electrically to the tube holders of the fluorescent tube lighting fixture. The tube has a safety unit arranged to prevent a voltage from transferring through the tube from its one end to the other until a voltage supplied from the corresponding tube holder of the lighting fixture to the pair of contact pins has been detected at each end of the tube separately. Electric power or switching control of electric power is cross-connected between the ends of the LED tube.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: December 17, 2013
    Assignee: Teknoware Oy
    Inventors: Yrjö Hartikka, Jouko Kuisma
  • Patent number: 8604719
    Abstract: A light-emitting element driving circuit system is provided in which a plurality of current paths, in each of which a light-emitting element and a switching element which is controlled to be switched ON and OFF for causing light to be emitted from the light-emitting element are connected in series, are placed in parallel to each other, wherein an ON time of each switching element is adjusted based on a light-emission period which is a period in which the light-emitting elements are caused to emit light in a circulating manner, such that a number of switching operations of each switching element is reduced.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: December 10, 2013
    Assignees: Sanyo Semiconductor Co., Ltd., Semiconductor Components Industries, LLC
    Inventor: Takuya Takeuchi
  • 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: 20130201704
    Abstract: A vehicle headlight and control system for a bus or large vehicle includes a headlight fixture with a center or low beam light source and side illumination light source operated independently. The side illumination light source may be activated when the vehicle is turning, as detected by the vehicle speed and steering shaft turn angle, to provide supplemental illumination. Both right and left side illumination sources may be provided, and may comprise LED light elements. The system may also include an audible sound generator to alert pedestrians when the vehicle is turning.
    Type: Application
    Filed: February 3, 2012
    Publication date: August 8, 2013
    Inventors: Jerry Lin, Yongchang Wang, Ren-Cheng Chao, Chin-Tin Hsiao, Chih-Li Wang
  • Patent number: 8485686
    Abstract: A multi-spectrum emitting device including one or more emitters configured to emit in a first non-visible light spectrum and a second visible light spectrum, and a switching mechanism with at least two switching elements. The switching mechanism is configured to require simultaneous activation of the at least two switching elements in order to change emissions from the first spectrum to the second spectrum. A tactile feedback mechanism is included to provide different tactile feedback for different emission modes of the device.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: July 16, 2013
    Assignee: S & S Precision, LLC
    Inventors: Johnny Swan, Andrew Borland, David Rogers, Michael Aaskov
  • Patent number: 8450950
    Abstract: An enhanced control mechanism for an LED light string system is provided for switching between one of two DC output phases or polarities so as to actuate one or the other of two LEDs within the bulbs on the light string. The control mechanism is further configured to allow switching so as to pass through the input power provided by a light string that is plugged into its electrical power feeding end. The control mechanism may provide either AC, rectified AC, or DC voltage of various values to the LED string according to the particular needs of the LED bulbs.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: May 28, 2013
    Assignee: National Christmas Products, Inc.
    Inventor: Michael M. McRae
  • Publication number: 20130099700
    Abstract: A circuit arrangement for organic light-emitting diodes can be arranged in a two-dimensional matrix. It can in particular be used with microdisplays. It can allow a wide influencing of the brightness of the electromagnetic radiation emitted by the organic light-emitting diodes. Every organic light-emitting diode can be controlled by means of a storage circuit, a sense amplifier and a driver circuit using the circuit arrangement. The driver circuit can be formed by at least three transistors connected in series and a further output transistor whose drain is connected to the anode of the respective organic light-emitting diode. In this respect, the transistor acting as the driver can have a constant electric operating voltage LVDD applied at its source and a further likewise constant electric operating voltage Vdrive is applied to its gate.
    Type: Application
    Filed: April 27, 2011
    Publication date: April 25, 2013
    Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Daniel Kreye, Thomas Presberger
  • Patent number: 8412354
    Abstract: A light source having a plurality of light elements and a control system for controlling the light elements. The control system comprises a plurality of light element controllers, each connected to a respective light element, and arranged to obtain light element data; and a bus interface, which is connected to the light element controllers via a light source bus. The bus interface provides the light element controllers with a general command, and the light element controllers generate light element drive signals on basis of the general command and the light element data.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: April 2, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Peter Deixler, Cornelis Jojakim Jalink, Paul Stravers
  • Patent number: 8385093
    Abstract: A voltage converter is provided in which a first terminal (A) and a second terminal (B) are provided, each coupled to a switching means, the switching means is coupled to respective terminals for connecting a first capacitor (C1), a second capacitor (C2) and a third capacitor (C3), and the voltage converter is configured for being operated in first and second modes of operation each comprising at least three phases, and in which the three capacitors (C1, C2, C3) are inserted in series connection (S) between the first terminal (A) and a reference potential terminal (10) in one phase, and in each of the two other phases a first path and a second path (P1, P2) are provided in each case in parallel connection with at least one of the three capacitors (C1, C2, C3) related to the second terminal (B).
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: February 26, 2013
    Assignee: austriamicrosystems AG
    Inventors: Peter Trattler, Jan Enenkel
  • Patent number: 8344665
    Abstract: A controller for controlling a plurality of devices configured for wireless communications in a facility includes a data communications interface communicating with at least one of the devices. The controller further includes a control module configured to provide a control signal to the data communications interface for communicating to a transceiver associated with the device and for turning off the device according to an algorithm wherein the control signal is provided based on a time of day and/or a sensed condition relating to use of the facility. The transceiver reports device data to the control module to quantify a reduction in power obtained by controlling the devices according to the algorithm.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: January 1, 2013
    Assignee: Orion Energy Systems, Inc.
    Inventors: Neal R. Verfuerth, Michael J. Potts, Jun Wang, Anthony J. Bartol
  • Patent number: 8305009
    Abstract: An inverter driver controls an inverter that supplies driving voltages to a plurality of discharge lamps. The inverter driver includes a first amplifier having an output terminal, a second amplifier having an output terminal connected to the output terminal of the first amplifier, and a capacitor connected between the output terminal and a ground source. The first amplifier outputs only a negative current corresponding to the maximum value among the driving voltages supplied to the plurality of discharge lamps, and the second amplifier outputs a current corresponding to the maximum value among the driving currents flowing through the plurality of discharge lamps. Such inverter driver controls the inverter according to a voltage of the capacitor.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: November 6, 2012
    Assignee: FAIRCHILD KOREA SEMICONDUCTOR, Ltd.
    Inventors: Dong-Hun Lee, Jae-Soon Choi
  • Publication number: 20120249016
    Abstract: Embodiments of the invention comprise a base and a light emitting diode (LED) power supply (PS) detachably connectable to the base module. The LED PS provides current and voltage to at least one LED lamp in a lighting fixture. The base optionally includes electrical connections for detachable connection of a ballast and further includes electrical connections to mains electrical power. An embodiment may further include the ballast. The LED PS, base, and ballast implement a common electrical and mechanical interface for enabling replacement of fluorescent lamps in lighting fixtures with LED lamps. A lamp including a base is included in some embodiments of the invention.
    Type: Application
    Filed: March 12, 2012
    Publication date: October 4, 2012
    Inventor: Toby Smith
  • Publication number: 20120242256
    Abstract: An animal exercise wheel is illuminated by LEDs connected to a battery via a reed switch. A magnet actuates the reed switch when an animal begins to rotate the wheel. The LEDs flash with the frequency of rotation of the animal wheel or continuously. As long as the wheel rotates, the magnet continues to actuate the reed switch, which resets a counter. When the wheel stops and the reed switch is no longer actuated, the counter counts a predetermined time, and terminates the illumination of the LEDs.
    Type: Application
    Filed: June 5, 2012
    Publication date: September 27, 2012
    Inventor: Austin J. Forest
  • Publication number: 20120242713
    Abstract: An electronic device includes a driver configured to drive light emitting elements under matrix control; a first electric current path to connect a first light emitting element to the driver, the first electric current path including parallel signal lines to connect a cathode of the first light emitting element to two or more terminals of the driver; a second electric current path to connect a second light emitting element to the driver, at least a portion of the second electric current path extending from a cathode of the second light emitting element sharing a common path with the first electric current path; and a backflow prevention element provided on the first electric current path and inserted between the cathode of the first light emitting element and the common path.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 27, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Nozomi YAGI, Yukihiro Sato
  • Patent number: 8242717
    Abstract: A light output device comprises a substrate arrangement comprising a plurality of light source circuits integrated into the structure of the substrate arrangement. Each light source circuit comprises a light source device arrangement (4) having two terminals and a transistor circuit (7). Each light source circuit is supplied with power from an associated pair the power connections (10,11,14,15,20), and at least two light source circuits (4,7) share the same pair of power connections. A set of control connections (18) are provided for receiving external control signals for controlling the transistor circuits (7). A set of non-overlapping electrodes (10,11,14,15,18,20) provide the internal connections between the power connections, the light source device terminals and the transistor circuits, and each light source device is individually independently controllable.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: August 14, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Maarten Marinus Johannes Wilhelmus Van Herpen, Petrus Johannes Bremer, Coen Theodorus Hubertus Fransiscus Liedenbaum
  • Patent number: 8237376
    Abstract: A method and a circuit may have an ability to provide constant currents of a certain set value, the rising and falling edges of which may be shorter than the design minimum on-phase. Essentially, these results may be obtained by keeping an operational amplifier that controls the output power switch in an active state during off-phases of an impulsive drive signal received by the current source circuit in order to maintain the output voltage of the operational amplifier at or just below the voltage to be applied to the control terminal of the output power switch during a successive on-phase of a received drive pulse signal.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: August 7, 2012
    Assignee: STMicroelectronics S.R.L.
    Inventor: Pasquale Franco
  • Patent number: 8237380
    Abstract: A method of arranging light emitting diodes (LEDs) is disclosed. The method includes M virtual lateral lines and N virtual vertical lines, which form virtual intersection nodes at the intersections; disposing N-1 lateral LEDs in each virtual lateral line with one lateral LED placed between two adjacent virtual intersection nodes, connecting the positive terminal of one later LED to the positive terminal of one of the two adjacent lateral LEDs, and connecting the negative terminal of the one lateral LED to the negative terminal of the other adjacent lateral LED; disposing M-1 vertical LEDs in each virtual vertical line except for the first and last virtual vertical lines, connecting the positive and negative terminal of one vertical LED in the same way; and connecting the AC power to the first and last virtual vertical lines.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: August 7, 2012
    Assignee: King Diode Co., Ltd.
    Inventors: Kun-Chieh Chang, Ko-Wen Jwo
  • Patent number: 8222838
    Abstract: There is provided a light-emitting-element driving circuit which comprises a light-emitting circuit unit in which a plurality of current paths in each of which a light-emitting element and a first switching element are connected in series are placed in parallel with each other between a power supply terminal connected to an input power supply and a common terminal, a common circuit unit in which a second switching element and a constant current source which supplies a predetermined current which is defined in advance are connected in series and which is placed between the common terminal and a ground terminal which is grounded, and a plurality of third switching elements each of which is placed between an anode terminal of the respective light-emitting element of the light-emitting circuit unit and ground, wherein a switching control is applied for the first switching elements, the second switching element, and the third switching elements.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: July 17, 2012
    Assignee: Semiconductor Components Industries, LLC
    Inventor: Takuya Takeuchi
  • Patent number: 8215796
    Abstract: A lighting device comprising: a shell; a first circuit; a light source set in the shell; an axis mounted in the shell; and an effective amount of conducting liquid. A rotation device and a switch device are rotatably connected to the shell via the axis. The switch device comprises a first storing cavity and a second storing cavity, which is configured for accommodating the conducting liquid. The first storing cavity communicates with the second storing cavity. A plurality of pairs of third grooves is formed in the first storing cavity. Each of which is set a pair of positive/negative terminals. Each of the pairs of positive/negative terminals is electronically connected to light source and the first circuit. A slide bar is formed on the rotation device, and is configured for pushing the conducting liquid inside of the first storing cavity.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: July 10, 2012
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Ting Luo, Xian-Wei Ma
  • Patent number: 8203283
    Abstract: The invention provides a LED arrangement including a LED string of a series arrangement of LED segments. A LED segment includes a single LED or a series arrangement of LEDs. A switching element (12, 22) is arranged in parallel with each corresponding LED segment (10, 20) of the LED string, for controlling a current (52, 62) through the LED segment (10, 20). A capacitor (13, 23) is arranged in parallel with each corresponding LED segment (10, 20) in order to prevent the occurrence of possibly harmful current spikes while switching one or more LED segments. The LED arrangement may also include a switched-mode power supply (2001). The invention further provides a LED assembly. A plurality of such LED assemblies assembles easily into a LED arrangement according to the invention.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: June 19, 2012
    Assignee: NXP B.V.
    Inventor: Gian Hoogzaad
  • Publication number: 20120119667
    Abstract: An electro-optical device includes a first pixel circuit which is disposed so as to correspond to each intersection between a scanning line and a first data line, a second pixel circuit which is disposed so as to correspond to each intersection between a scanning line and a second data line, a signal line, a selection section, a driving circuit. In a first selection period, the selection section is operated such that the first data line and the second data line are electrically connected to the signal line. In the second selection period, the selection section is operated such that the second data line is electrically connected to the signal line. In a writing period, the first data potential is supplied to the first pixel circuit and the second data potential is supplied to the second pixel circuit.
    Type: Application
    Filed: November 14, 2011
    Publication date: May 17, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takayuki KITAZAWA, Takehiko KUBOTA, Toshiyuki KASAI
  • Publication number: 20120119680
    Abstract: A beacon device includes a control circuitry, a window, and a plurality of sets of illumination sources. The window includes a prismatic structure forming a ring from a planar perspective. The prismatic structure defines an inside surface and an outside surface from the planar perspective. The plurality of sets of illumination sources are coupled to the control circuitry. Each set of illumination sources includes a first illumination source disposed proximal to the inside surface of the prismatic structure and includes a second illumination source disposed proximal to the outside surface of the prismatic structure. The control circuitry is to illuminate a first set of the plurality of sets of illumination sources to transmit a signal in a first direction.
    Type: Application
    Filed: January 27, 2012
    Publication date: May 17, 2012
    Applicant: RF CODE, INC.
    Inventors: Ronald Graczyk, Michael Primm, Dale Parvey, Ryan Joy, Chris C. Gaskins
  • Patent number: 8169163
    Abstract: The present invention relates to a control device of a light emitting device that includes a plurality of LED rows formed of a plurality of LEDs sequentially connected in series. The control device includes: a plurality of switches respectively connected to the plurality of LED rows and sequentially transmitting a detection voltage of each of the plurality of LED rows, wherein the detection voltage corresponds to an output voltage applied to the plurality of LED rows; a comparator receiving the plurality of detection voltages, and generating a clock control signal according to a result of comparison with a predetermined reference; a clock signal generator generating a clock signal having a period that is changed according to the clock control signal; and a shift register that controls switching operations of the plurality of switches according to the clock signal.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: May 1, 2012
    Assignee: Fairchild Korea Semiconductor Ltd.
    Inventors: Eunchul Kang, Duckki Kwon, Juho Kim
  • Publication number: 20120091921
    Abstract: System for light signalling to supply a moving light reference (60) to an athlete, said system (10) including a plurality of lighting elements (20), in particular light emitting diodes, arranged along an athlete path, controlling means (11, 19) adapted to control said plurality of lighting elements (20) according to a lighting sequence adapted to generate said moving light reference (60) and to impart to said moving light reference (60) a displacement speed along said plurality of lighting elements (20) which is settable through said controlling means (11, 19).
    Type: Application
    Filed: April 19, 2010
    Publication date: April 19, 2012
    Inventor: Alessandro Buresta
  • Publication number: 20120091920
    Abstract: A light source and method for operating a light source are disclosed. The present invention includes a light source and method for using the same. The light source includes a power coupler, a reconfigurable two-dimensional LED array and a controller. The power coupler is configured to receive a power potential that varies as a function of time. The LED array has a plurality of configurations of LEDs, each configuration being characterized by a minimum bias potential and a maximum bias potential. The LED array generates light when a potential between first and second power terminals is greater than the minimum bias potential. The controller varies the configuration of the array such that the power potential remains between the minimum and maximum bias potentials as the power potential varies.
    Type: Application
    Filed: April 11, 2011
    Publication date: April 19, 2012
    Inventor: Long Yang
  • Publication number: 20120056550
    Abstract: The invention provides an active matrix EL display device which can perform a clear multi-gray scale color display. In particular, the invention provides a large active matrix EL display device at low cost by a manufacturing method which can selectively form a pattern. Power supply lines in a pixel portion are arranged in matrix by the manufacturing method which can selectively form a pattern. Further, capacitance between wirings is reduced by providing a longer distance between adjacent wirings by the manufacturing method which can selectively form a pattern.
    Type: Application
    Filed: November 10, 2011
    Publication date: March 8, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO.,LTD.
    Inventors: Yasunori YOSHIDA, Hajime Kimura, Shinji Maekawa, Osamu Nakamura, Shunpei Yamazaki
  • Publication number: 20120050606
    Abstract: A controllable lighting system may include a plurality of light source groups, a group controller for each light source group, a master controller, and a network communication system. Each group controller may be configured to control the light sources in its light source group based on a group control command. The master controller may be configured to receive a master control command relating to the light sources and to issue a group control command to each of the group controllers that collectively effectuate compliance with the master control command. The network communication system may be configured to communicate the group control commands from the master controller to the group controllers.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 1, 2012
    Applicant: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventors: Paul E. Debevec, Xueming Yu, Mark Bolas, Graham Fyffe, Jay Busch, Pieter Peers, Abhijeet Ghosh
  • Patent number: 8120289
    Abstract: Packaged semiconductor electronic device to be individually positioned and coupled to peripheral electronic devices, the package comprising a light emitting semiconductor device, and a switch for controlling the light emitting semiconductor device.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: February 21, 2012
    Assignee: NXP B.V.
    Inventors: Steven F. E. Vaassen, Peter Deixler
  • Patent number: 8120274
    Abstract: A controlling circuit and a controlling method are disclosed. The controlling circuit includes a plurality of switches and a comparator. The first terminals of the switches are respectively coupled to one of a plurality of LED channels. The switches are conducted according to a plurality of switching signals respectively, wherein the switching signals are asserted alternately. The first input terminal of the comparator is coupled to the second terminals of the switches and the second input terminal of the comparator receives a reference voltage for the comparator to compare the voltage of the first input terminal with the voltage of the second input terminal so as to output a comparison result. In this way, whether the LED channels work abnormally or not may be detected. In addition, the hardware cost may also be reduced by employing fewer comparators through a sharing mode.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: February 21, 2012
    Assignee: ITE Tech. Inc.
    Inventors: Chih-Yuan Kuo, Hsu-Min Chen
  • Patent number: 8120288
    Abstract: A light emitting diode (LED) driving circuit is provided. The LED driving circuit includes a voltage adjusting unit, a switch unit, and a control unit. The control unit is coupled to the voltage adjusting unit and the switch unit. The voltage adjusting unit outputs a driving voltage to a first end of each of a plurality of load units. The switch unit is coupled to a second end of each of the load units. When one LED string in the load units is coupled to a current source, the voltage adjusting unit adjusts the voltage level of the driving voltage so that the voltage level of the driving voltage of the driving voltage corresponds to the driven LED string. Thereby, a driving problem caused by the variation in electrical characteristics of the LEDs is alleviated.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: February 21, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chia-Lin Liu, Ling Li, Chia-Ling Peng, Kuo-Chung Lo, Chi-Neng Mo
  • Publication number: 20120032615
    Abstract: Provided is a shift register configured by cascade connecting unit circuits each including a bootstrap circuit. In at least one example embodiment, for the unit circuits, a time period during which a transistor is in an ON state and a clock signal is high level corresponds to a clock passing period. Among transistors whose one conduction terminal is connected to a gate of the transistor, channel lengths of transistors configured such that a low-level potential is fed to gates of the transistors to turn the transistors to an OFF state in the clock passing period and that a low-level potential is applied to the conduction terminal of the transistors in the clock passing period are made longer than the channel length of the transistor. With this, it is possible to reduce a leakage current in the clock passing period, and to prevent the fluctuation of a gate potential of the transistor and dullness in an output signal from occurring.
    Type: Application
    Filed: December 25, 2009
    Publication date: February 9, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuo Kikuchi, Shinya Tanaka, Chikao Yamasaki, Junya Shimada
  • Patent number: 8063906
    Abstract: A multiparameter stage lighting apparatus is provided comprising a lamp housing, which may include a plurality of sets of light emitting diodes, each set of light emitting diodes having a plurality of colors, the plurality of sets of light emitting diodes forming an additive color mixing system. The multiparameter stage lighting apparatus may further include a plurality of pie shaped light emitting circuit boards, one light emitting circuit board for each set of the plurality of sets of light emitting diodes, each set of the plurality of sets of light emitting diodes mounted to its respective light emitting circuit board. The multiparameter stage lighting apparatus may further include a plurality of light emitting diode signaling circuit boards, one for each of the plurality of pie shaped light emitting circuit boards.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: November 22, 2011
    Assignee: Barco Lighting Systems, Inc.
    Inventors: Richard S. Belliveau, Thomas Edward Grimes
  • Publication number: 20110266973
    Abstract: The Spider is a lighting control device that has the capability of controlling a light source from multiple switches if pressed randomly, making it possible for a user to turn lights on and off using multiple switches. This device may be placed virtually anywhere within a room to allow the user to conveniently and safely turn their lights on and off with ease, from the user-preferred location(s). The device also features a time delay, which enables the user to turn on a light and then preset the amount of time before it automatically turns off. The invention consists of an enclosure with touch-pad capability and may include numerous ICs, capacitors, IC regulators, resistors, regular electrical switches, AC outlets, push-button switches, and a transformer for the power supply. The device may manipulate up to 12 push-button switches or more in certain embodiments.
    Type: Application
    Filed: November 1, 2010
    Publication date: November 3, 2011
    Inventor: Lothaire Alfred