IN2012DE00317A - - Google Patents

Info

Publication number
IN2012DE00317A
IN2012DE00317A IN317DE2012A IN2012DE00317A IN 2012DE00317 A IN2012DE00317 A IN 2012DE00317A IN 317DE2012 A IN317DE2012 A IN 317DE2012A IN 2012DE00317 A IN2012DE00317 A IN 2012DE00317A
Authority
IN
India
Prior art keywords
power
converter
light source
control signals
coupled
Prior art date
Application number
Inventor
Kuo Ching-Chuan
Lin Lin Yung
Original Assignee
O2Micro Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US13/028,626 external-priority patent/US8378588B2/en
Application filed by O2Micro Inc filed Critical O2Micro Inc
Publication of IN2012DE00317A publication Critical patent/IN2012DE00317A/en

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/24—Controlling the colour of the light using electrical feedback from LEDs or from LED modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

A driving circuit for driving a light source includes a converter and a dimming controller. The converter coupled to a power source is operable for receiving power from the power source and for providing regulated power to the light source according to control signals. The dimming controller coupled to the converter is operable for monitoring a power switch coupled between the power source and the converter, for receiving a color change signal indicating a first set of operations of the power switch and a dimming request signal indicating a second set of operations of the power switch, for controlling the control signals to change the color of the light source in response to the color change signal, and for controlling the control signals to adjust the brightness of the light source in response to the dimming request signal.
IN317DE2012 2011-02-16 2012-02-06 IN2012DE00317A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/028,626 US8378588B2 (en) 2008-12-12 2011-02-16 Circuits and methods for driving light sources

Publications (1)

Publication Number Publication Date
IN2012DE00317A true IN2012DE00317A (en) 2015-04-10

Family

ID=45826441

Family Applications (1)

Application Number Title Priority Date Filing Date
IN317DE2012 IN2012DE00317A (en) 2011-02-16 2012-02-06

Country Status (7)

Country Link
JP (1) JP5492921B2 (en)
CN (1) CN102387639B (en)
BR (1) BR102012003599A2 (en)
DE (1) DE102012200692B4 (en)
GB (1) GB2488208B (en)
IN (1) IN2012DE00317A (en)
TW (1) TWI478625B (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9386653B2 (en) 2008-12-12 2016-07-05 O2Micro Inc Circuits and methods for driving light sources
US9030122B2 (en) 2008-12-12 2015-05-12 O2Micro, Inc. Circuits and methods for driving LED light sources
US9253843B2 (en) 2008-12-12 2016-02-02 02Micro Inc Driving circuit with dimming controller for driving light sources
US9232591B2 (en) 2008-12-12 2016-01-05 O2Micro Inc. Circuits and methods for driving light sources
GB2498371B (en) * 2012-01-12 2016-09-14 Tridonic Gmbh & Co Kg Lamp controller
JP2014026954A (en) * 2012-07-26 2014-02-06 O2 Micro Inc Circuit and method for driving light source
JP5988207B2 (en) * 2012-09-07 2016-09-07 パナソニックＩｐマネジメント株式会社 Solid-state light-emitting element driving device, lighting device, and lighting fixture
WO2014065389A1 (en) 2012-10-25 2014-05-01 Semiconductor Energy Laboratory Co., Ltd. Central control system
TW201419934A (en) * 2012-11-02 2014-05-16 Unity Opto Technology Co Ltd LED driving circuit
CN103841716B (en) * 2012-11-27 2016-04-27 东贝光电科技股份有限公司 Led drive circuit
TWI497010B (en) * 2013-02-19 2015-08-21 LED lamps THD improvement circuit
TWM461737U (en) * 2013-05-24 2013-09-11 Hark Group Holding Corp Lighting device
GB2519794A (en) * 2013-10-30 2015-05-06 Kosnic Uk Ltd Dimming lighting apparatus
CN103906314B (en) * 2014-03-04 2016-05-04 华南理工大学 LED drive circuit and method based on voltage memory with segmentation current limliting
CN104023435B (en) * 2014-05-14 2017-01-04 华南理工大学 A kind of New LED circuit
CN106605448B (en) * 2014-08-27 2019-03-12 夏普株式会社 Lighting device
US9686834B2 (en) * 2014-09-15 2017-06-20 Dialog Semiconductor Inc. Powering internal components of LED lamps using dissipative sources
CN104812118B (en) * 2015-04-17 2017-03-01 华南理工大学 A kind of LED illumination drive circuit of employing electric main and method
US10492257B2 (en) * 2016-05-20 2019-11-26 Panasonic Intellectual Property Management Co., Ltd. Lighting device and lighting fixture
CN109729614A (en) * 2017-10-27 2019-05-07 凹凸电子（武汉）有限公司 Controller, light source driving circuit and the method for controlling light source module
CN110392461A (en) * 2018-04-18 2019-10-29 凹凸电子（武汉）有限公司 Controller, light source driving circuit and the method for controlling light source module
CN111836420A (en) * 2019-04-17 2020-10-27 漳州立达信光电子科技有限公司 LED driving method, circuit, LED device and driving power module
US10602578B1 (en) * 2019-06-03 2020-03-24 Astec International Limited Horticulture facilities with centralized power supplies for powering LED luminaires via power transfer switches
CN112068461B (en) * 2019-06-11 2022-01-04 北京大瞬科技有限公司 Controller, control circuit and method for controlling intelligent equipment by using control circuit
CN112233627B (en) * 2020-12-14 2021-04-20 北京显芯科技有限公司 Control method of backlight circuit, backlight circuit and LCD display screen

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4495814B2 (en) * 1999-12-28 2010-07-07 アビックス株式会社 Dimmable LED lighting fixture
US7204602B2 (en) * 2001-09-07 2007-04-17 Super Vision International, Inc. Light emitting diode pool assembly
CN2640198Y (en) * 2003-07-21 2004-09-08 长春工业大学 Light-modulation controller for large fluorescent lamp
US7296913B2 (en) * 2004-07-16 2007-11-20 Technology Assessment Group Light emitting diode replacement lamp
US7126289B2 (en) * 2004-08-20 2006-10-24 O2 Micro Inc Protection for external electrode fluorescent lamp system
US7339128B2 (en) * 2004-12-29 2008-03-04 George Yen All-color light control switch
CN1925714B (en) * 2005-09-02 2010-05-05 索玉昇 Multistage light modulation control device for gas-discharge lamp and light modulation control method thereof
JP5089193B2 (en) * 2007-02-22 2012-12-05 株式会社小糸製作所 Light emitting device
CN101358719B (en) * 2007-07-30 2012-01-04 太一节能系统股份有限公司 LED lamp source and illuminating system
US9101022B2 (en) * 2008-01-25 2015-08-04 Eveready Battery Company, Inc. Lighting device having boost circuitry
US7759881B1 (en) * 2008-03-31 2010-07-20 Cirrus Logic, Inc. LED lighting system with a multiple mode current control dimming strategy
US7843148B2 (en) * 2008-04-08 2010-11-30 Micrel, Inc. Driving multiple parallel LEDs with reduced power supply ripple
US7919934B2 (en) * 2008-06-28 2011-04-05 Huan-Po Lin Apparatus and method for driving and adjusting light
CN101854759B (en) * 2009-03-31 2011-07-06 凹凸电子（武汉）有限公司 Drive circuit for controlling electric energy of light source, method and system
JP5600456B2 (en) * 2009-05-19 2014-10-01 ローム株式会社 Light emitting diode drive circuit, light emitting device and display device using the same, and drive circuit protection method
JP5404190B2 (en) * 2009-06-02 2014-01-29 三菱電機株式会社 Lighting device and lighting apparatus
TWI401995B (en) * 2009-06-06 2013-07-11 Anteya Technology Corp Power switch switching dimmer and its LED device
EP2273851A3 (en) * 2009-06-24 2011-05-11 Nxp B.V. System and method for controlling LED cluster
CN101815383B (en) * 2010-03-31 2013-11-06 许波 LED dimming driving device and dimming LED lamp

Also Published As

Publication number Publication date
JP5492921B2 (en) 2014-05-14
BR102012003599A2 (en) 2014-07-08
CN102387639A (en) 2012-03-21
GB2488208A (en) 2012-08-22
GB201201989D0 (en) 2012-03-21
CN102387639B (en) 2013-08-21
JP2012169277A (en) 2012-09-06
DE102012200692B4 (en) 2016-02-04
TW201236512A (en) 2012-09-01
GB2488208B (en) 2013-08-14
TWI478625B (en) 2015-03-21
DE102012200692A1 (en) 2012-08-16

Similar Documents

Publication Publication Date Title
IN2012DE00317A (en)
IN2012DE00358A (en)
WO2012026731A3 (en) Resonance power transmission system based on power transmission efficiency
WO2012039930A3 (en) Auto-sensing switching regulator to drive a light source through a current regulator
WO2014008062A3 (en) Systems and methods for low-power lamp compatibility with a leading-edge dimmer and a magnetic transformer
WO2013166345A3 (en) Dimmable multichannel driver for solid state light sources
WO2012027507A3 (en) Multi-mode dimmer interfacing including attached state control
WO2013074416A3 (en) Solid state lighting switches and fixtures providing selectively linked dimming and color control and methods of operating
WO2011101680A3 (en) A controller
WO2010140050A8 (en) Controller for a buck-boost circuit
EP2595304A3 (en) Power system controlling and monitoring power semiconductor devices employing two serial signals
IN2012DE00931A (en)
WO2011162569A3 (en) Apparatus for automatically controlling the illumination of led lighting
WO2013085381A3 (en) Driver system for driving at least one led
GB201300495D0 (en) Circuits and methods of driving light sources
WO2014009861A3 (en) Method of controlling a lighting device
WO2015082644A3 (en) Control apparatus for a power converter comprising a redundent control system of two controllers
MX2009009599A (en) A transmit power control module and associated method for transmit power configuration.
MX2012006986A (en) Photocell controlled led driver circuit.
PH12015000063A1 (en) Dimming device and illumination system using same
WO2013152369A3 (en) Transformer for a lamp, led converter, and method for operating an llc resonant transformer
IN2014CN02385A (en)
WO2012009622A3 (en) Powerline communication control of light emitting diode (led) lighting fixtures
WO2014084982A3 (en) Step-dimming led driver and system
WO2014121175A3 (en) Led system with two wire control circuit