HK1147640A1 - Led control circuit and method therefor - Google Patents

Led control circuit and method therefor

Info

Publication number
HK1147640A1
HK1147640A1 HK11101515.1A HK11101515A HK1147640A1 HK 1147640 A1 HK1147640 A1 HK 1147640A1 HK 11101515 A HK11101515 A HK 11101515A HK 1147640 A1 HK1147640 A1 HK 1147640A1
Authority
HK
Hong Kong
Prior art keywords
control circuit
method therefor
led control
led
therefor
Prior art date
Application number
HK11101515.1A
Other languages
English (en)
Inventor
Alan R Ball
Stephen P Robb
Original Assignee
Semiconductor Components Ind
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
Application filed by Semiconductor Components Ind filed Critical Semiconductor Components Ind
Publication of HK1147640A1 publication Critical patent/HK1147640A1/xx

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]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
HK11101515.1A 2006-04-07 2011-02-16 Led control circuit and method therefor HK1147640A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/399,523 US7839099B2 (en) 2006-04-07 2006-04-07 LED control circuit and method therefor

Publications (1)

Publication Number Publication Date
HK1147640A1 true HK1147640A1 (en) 2011-08-12

Family

ID=38574530

Family Applications (2)

Application Number Title Priority Date Filing Date
HK08101369.3A HK1110738A1 (en) 2006-04-07 2008-02-05 Led control circuit and method therefor
HK11101515.1A HK1147640A1 (en) 2006-04-07 2011-02-16 Led control circuit and method therefor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
HK08101369.3A HK1110738A1 (en) 2006-04-07 2008-02-05 Led control circuit and method therefor

Country Status (5)

Country Link
US (1) US7839099B2 (xx)
KR (1) KR101415621B1 (xx)
CN (2) CN101868102B (xx)
HK (2) HK1110738A1 (xx)
TW (1) TWI425860B (xx)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090295307A1 (en) * 2008-05-28 2009-12-03 Spectronics Corporation Inspection lamp with buck boost circuit control
US20100283773A1 (en) * 2009-05-08 2010-11-11 Yong-Hun Kim Driving integrated circuit and image display device including the same
WO2011038100A1 (en) * 2009-09-23 2011-03-31 3M Innovative Properties Company Lighting assembly
CN103198789B (zh) * 2011-09-28 2014-08-06 合肥工业大学 具有高恒流精度的led显示屏恒流驱动电路
CN103150990B (zh) * 2011-09-28 2014-08-06 合肥工业大学 具有多种镜像比的led显示屏恒流驱动电路
EP2648482A1 (en) * 2012-04-05 2013-10-09 Koninklijke Philips N.V. LED lighting system
TW201426237A (zh) * 2012-12-18 2014-07-01 Richtek Technology Corp 電流控制電路與電流控制方法
US9773443B2 (en) * 2013-06-06 2017-09-26 Intel Corporation Thin film transistor display backplane and pixel circuit therefor
US9131578B2 (en) * 2013-07-16 2015-09-08 General Electric Company Programmable light emitting diode (LED) driver technique based upon an input voltage signal
US9179527B2 (en) 2013-07-16 2015-11-03 General Electric Company Programmable light emitting diode (LED) driver technique based upon a prefix signal
CN108848591B (zh) * 2018-04-24 2024-08-02 林泽泓 自动保持光照度恒定的照明灯装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3032620B2 (ja) * 1991-09-13 2000-04-17 松下電工株式会社 色温度可変照明装置
JP3732345B2 (ja) * 1998-02-10 2006-01-05 株式会社沖データ 駆動回路、ｌｅｄヘッド及びプリンタ
US6362578B1 (en) * 1999-12-23 2002-03-26 Stmicroelectronics, Inc. LED driver circuit and method
US7038399B2 (en) * 2001-03-13 2006-05-02 Color Kinetics Incorporated Methods and apparatus for providing power to lighting devices
GB2389952A (en) * 2002-06-18 2003-12-24 Cambridge Display Tech Ltd Driver circuits for electroluminescent displays with reduced power consumption
US6798152B2 (en) * 2002-08-21 2004-09-28 Freescale Semiconductor, Inc. Closed loop current control circuit and method thereof
JP4039623B2 (ja) * 2002-11-25 2008-01-30 本田技研工業株式会社 発光ダイオード点灯回路
US6952334B2 (en) * 2003-10-07 2005-10-04 Semiconductor Components Industries, L.L.C. Linear regulator with overcurrent protection
JP4262083B2 (ja) * 2003-12-25 2009-05-13 キャタピラージャパン株式会社 建設機械用モニタの過熱防止構造
US7466082B1 (en) * 2005-01-25 2008-12-16 Streamlight, Inc. Electronic circuit reducing and boosting voltage for controlling LED current

Also Published As

Publication number Publication date
CN101052256B (zh) 2010-09-08
TW200739481A (en) 2007-10-16
HK1110738A1 (en) 2008-07-18
KR20070100638A (ko) 2007-10-11
KR101415621B1 (ko) 2014-07-04
CN101868102A (zh) 2010-10-20
CN101868102B (zh) 2013-01-23
TWI425860B (zh) 2014-02-01
CN101052256A (zh) 2007-10-10
US20070236158A1 (en) 2007-10-11
US7839099B2 (en) 2010-11-23

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