HK83596A - Process and device for dimming a fluorescent lamp of an lcd backlight - Google Patents

Process and device for dimming a fluorescent lamp of an lcd backlight

Info

Publication number
HK83596A
HK83596A HK83596A HK83596A HK83596A HK 83596 A HK83596 A HK 83596A HK 83596 A HK83596 A HK 83596A HK 83596 A HK83596 A HK 83596A HK 83596 A HK83596 A HK 83596A
Authority
HK
Hong Kong
Prior art keywords
dimming
fluorescent lamp
lcd backlight
backlight
lcd
Prior art date
Application number
HK83596A
Other languages
English (en)
Inventor
Georges Lavaud
Jean-Pierre Bouron
Original Assignee
Thomson Csf
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 Thomson Csf filed Critical Thomson Csf
Publication of HK83596A publication Critical patent/HK83596A/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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3927—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by pulse width modulation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/04—Dimming circuit for fluorescent lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Inverter Devices (AREA)
HK83596A 1989-06-30 1996-05-09 Process and device for dimming a fluorescent lamp of an lcd backlight HK83596A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8908807A FR2649277B1 (fr) 1989-06-30 1989-06-30 Procede et dispositif de gradation de lumiere pour lampe fluorescente d'eclairage arriere d'ecran a cristaux liquides

Publications (1)

Publication Number Publication Date
HK83596A true HK83596A (en) 1996-05-17

Family

ID=9383336

Family Applications (1)

Application Number Title Priority Date Filing Date
HK83596A HK83596A (en) 1989-06-30 1996-05-09 Process and device for dimming a fluorescent lamp of an lcd backlight

Country Status (7)

Country Link
US (1) US5105127A (fr)
EP (1) EP0406116B1 (fr)
JP (1) JPH0364895A (fr)
CA (1) CA2019628A1 (fr)
DE (1) DE69006272T2 (fr)
FR (1) FR2649277B1 (fr)
HK (1) HK83596A (fr)

Families Citing this family (117)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243261A (en) * 1991-02-07 1993-09-07 U.S. Philips Corporation Modulated high frequency dimmer circuit with infrared suppression
JPH04333021A (ja) * 1991-05-09 1992-11-20 Sharp Corp 液晶表示装置
US5287040A (en) * 1992-07-06 1994-02-15 Lestician Ballast, Inc. Variable control, current sensing ballast
US5561351A (en) * 1992-10-14 1996-10-01 Diablo Research Corporation Dimmer for electrodeless discharge lamp
US5440324A (en) * 1992-12-30 1995-08-08 Avionic Displays Corporation Backlighting for liquid crystal display
US5910854A (en) 1993-02-26 1999-06-08 Donnelly Corporation Electrochromic polymeric solid films, manufacturing electrochromic devices using such solid films, and processes for making such solid films and devices
US5323090A (en) * 1993-06-02 1994-06-21 Lestician Ballast, Inc. Lighting system with variable control current sensing ballast
DE4326415B4 (de) * 1993-08-06 2006-04-13 Siemens Ag Verfahren zur Ansteuerung einer Leuchtstofflampe und Anordnung zur Durchführung des Verfahrens
US5422545A (en) * 1993-08-19 1995-06-06 Tek-Tron Enterprises, Inc. Closed loop feedback control circuits for gas discharge lamps
US5428265A (en) * 1994-02-28 1995-06-27 Honeywell, Inc. Processor controlled fluorescent lamp dimmer for aircraft liquid crystal display instruments
DE19511810A1 (de) * 1994-03-30 1995-10-26 Lg Electronics Inc Lampen-Betriebseinrichtung für einen LCD-Projektor vom Projektions-Typ
US5668663A (en) 1994-05-05 1997-09-16 Donnelly Corporation Electrochromic mirrors and devices
JP3027298B2 (ja) * 1994-05-31 2000-03-27 シャープ株式会社 バックライト制御機能付き液晶表示装置
US5668444A (en) * 1994-06-17 1997-09-16 Everbrite, Inc. Soft-transition FSK dimmer for gaseous luminous tube lights
DE4437204A1 (de) * 1994-08-31 1996-03-07 Vdo Schindling Verfahren und Schaltungsanordnung zum Betrieb einer Leuchtstofflampe
US5515261A (en) * 1994-12-21 1996-05-07 Lumion Corporation Power factor correction circuitry
US6891563B2 (en) 1996-05-22 2005-05-10 Donnelly Corporation Vehicular vision system
DE69617616T2 (de) * 1995-07-10 2002-08-14 Koninkl Philips Electronics Nv Schaltungsanordnung
JPH0992480A (ja) * 1995-09-21 1997-04-04 Sony Corp 冷陰極蛍光管点灯装置
GB2306810A (en) * 1995-10-20 1997-05-07 Central Research Lab Ltd Controlling the brightness of a glow discharge
AT407461B (de) * 1996-04-24 2001-03-26 Kurz Martin Ansteuerung für entladungslampe
GB2319678B (en) * 1996-11-25 2001-05-09 Lin Ming Chao Electronic ballast lighting power control device
US5838294A (en) * 1996-12-15 1998-11-17 Honeywell Inc. Very low duty cycle pulse width modulator
DE19733939A1 (de) * 1997-08-06 1999-02-11 Mannesmann Vdo Ag Schaltungsanordnung zum dimmbaren Betrieb einer Leuchtstofflampe
DE59812414D1 (de) 1997-04-24 2005-01-27 Siemens Ag Schaltungsanordnung zum dimmbaren betrieb einer leuchtstofflampe
US6124886A (en) 1997-08-25 2000-09-26 Donnelly Corporation Modular rearview mirror assembly
US6326613B1 (en) * 1998-01-07 2001-12-04 Donnelly Corporation Vehicle interior mirror assembly adapted for containing a rain sensor
US6172613B1 (en) 1998-02-18 2001-01-09 Donnelly Corporation Rearview mirror assembly incorporating vehicle information display
US8294975B2 (en) 1997-08-25 2012-10-23 Donnelly Corporation Automotive rearview mirror assembly
DE19737786A1 (de) * 1997-08-29 1999-03-04 Bosch Gmbh Robert Schaltungsanordnung zur Ansteuerung wenigstens einer Kaltkathodenfluoreszenzlampe
DE69828320T2 (de) * 1997-10-16 2005-12-22 Nec Tokin Corp., Sendai Hinterbeleuchtungsschaltung für eine LCD Anzeige
US5939830A (en) * 1997-12-24 1999-08-17 Honeywell Inc. Method and apparatus for dimming a lamp in a backlight of a liquid crystal display
US6445287B1 (en) 2000-02-28 2002-09-03 Donnelly Corporation Tire inflation assistance monitoring system
US8288711B2 (en) 1998-01-07 2012-10-16 Donnelly Corporation Interior rearview mirror system with forwardly-viewing camera and a control
US6477464B2 (en) 2000-03-09 2002-11-05 Donnelly Corporation Complete mirror-based global-positioning system (GPS) navigation solution
US6329925B1 (en) * 1999-11-24 2001-12-11 Donnelly Corporation Rearview mirror assembly with added feature modular display
US6693517B2 (en) 2000-04-21 2004-02-17 Donnelly Corporation Vehicle mirror assembly communicating wirelessly with vehicle accessories and occupants
US6097162A (en) * 1998-08-17 2000-08-01 Alliedsignal Inc. Power supply system for a fluorescent lamp
IT1306100B1 (it) * 1998-10-14 2001-05-29 Space Cannon Vh Srl Sistema elettronico per la generazione ed il controllo di effettiluminosi su proiettori
US6114814A (en) 1998-12-11 2000-09-05 Monolithic Power Systems, Inc. Apparatus for controlling a discharge lamp in a backlighted display
US6900600B2 (en) 1998-12-11 2005-05-31 Monolithic Power Systems, Inc. Method for starting a discharge lamp using high energy initial pulse
DE69912101T2 (de) 1998-12-21 2004-07-29 Koninklijke Philips Electronics N.V. Schaltungsanordnung
JP2000241796A (ja) * 1998-12-24 2000-09-08 Sharp Corp 液晶表示装置及び液晶表示装置の制御信号を出力する電子機器
DE19903015A1 (de) * 1999-01-26 2000-08-03 Vogt Electronic Ag Dimmbares Vorschaltgerät für Kaltkathoden-Fluoreszenzlampen
US6153981A (en) * 1999-02-19 2000-11-28 General Electric Company Strobing light control adapter
US6191539B1 (en) 1999-03-26 2001-02-20 Korry Electronics Co Fluorescent lamp with integral conductive traces for extending low-end luminance and heating the lamp tube
DE19920917A1 (de) * 1999-05-06 2000-11-09 Mannesmann Vdo Ag Anzeige mit einer Beleuchtungseinheit
US6804129B2 (en) * 1999-07-22 2004-10-12 02 Micro International Limited High-efficiency adaptive DC/AC converter
US6259615B1 (en) 1999-07-22 2001-07-10 O2 Micro International Limited High-efficiency adaptive DC/AC converter
TW472186B (en) * 2000-02-11 2002-01-11 Mitac Int Corp Power saving circuit and method of display light source
US7167796B2 (en) 2000-03-09 2007-01-23 Donnelly Corporation Vehicle navigation system for use with a telematics system
WO2007053710A2 (fr) 2005-11-01 2007-05-10 Donnelly Corporation Retroviseur interieur a affichage
AU2001243285A1 (en) 2000-03-02 2001-09-12 Donnelly Corporation Video mirror systems incorporating an accessory module
US7370983B2 (en) 2000-03-02 2008-05-13 Donnelly Corporation Interior mirror assembly with display
FR2806247B1 (fr) * 2000-03-10 2002-05-31 Renault Procede de commande d'un dispositif d'alimentation d'une lampe a decharge
ATE338443T1 (de) 2000-05-12 2006-09-15 O2Micro Int Ltd Intregrierte schaltung zur lampenerwärmung und dimmersteuerung
US6608450B2 (en) 2000-06-13 2003-08-19 Lighttech Group, Inc. High frequency, high efficiency electronic lighting system with sodium lamp
US6555971B1 (en) 2000-06-13 2003-04-29 Lighttech Group, Inc. High frequency, high efficiency quick restart lighting system
US6555972B1 (en) 2000-06-13 2003-04-29 Lighttech, Group, Inc. High frequency, high efficiency electronic lighting system with metal halide lamp
US6344717B1 (en) 2000-10-12 2002-02-05 Lighttech Group, Inc High frequency, high efficiency electronic lighting system with iodine and/or bromine-based metal halide high pressure discharge lamp
US6501234B2 (en) 2001-01-09 2002-12-31 02 Micro International Limited Sequential burst mode activation circuit
US7581859B2 (en) 2005-09-14 2009-09-01 Donnelly Corp. Display device for exterior rearview mirror
US7255451B2 (en) 2002-09-20 2007-08-14 Donnelly Corporation Electro-optic mirror cell
AU2002251807A1 (en) 2001-01-23 2002-08-19 Donnelly Corporation Improved vehicular lighting system for a mirror assembly
US6570344B2 (en) 2001-05-07 2003-05-27 O2Micro International Limited Lamp grounding and leakage current detection system
CA2447880C (fr) * 2001-05-24 2009-04-07 Fred A. Brown Stator presentant plusieurs configurations d'enroulement
KR100878222B1 (ko) * 2001-07-03 2009-01-13 삼성전자주식회사 액정 표시 장치용 전원 공급 장치
US6731075B2 (en) * 2001-11-02 2004-05-04 Ampr Llc Method and apparatus for lighting a discharge lamp
US7515446B2 (en) * 2002-04-24 2009-04-07 O2Micro International Limited High-efficiency adaptive DC/AC converter
US6918674B2 (en) 2002-05-03 2005-07-19 Donnelly Corporation Vehicle rearview mirror system
US6856519B2 (en) 2002-05-06 2005-02-15 O2Micro International Limited Inverter controller
US6841947B2 (en) * 2002-05-14 2005-01-11 Garmin At, Inc. Systems and methods for controlling brightness of an avionics display
US7329013B2 (en) 2002-06-06 2008-02-12 Donnelly Corporation Interior rearview mirror system with compass
AU2003237424A1 (en) 2002-06-06 2003-12-22 Donnelly Corporation Interior rearview mirror system with compass
US6873322B2 (en) * 2002-06-07 2005-03-29 02Micro International Limited Adaptive LCD power supply circuit
US6949912B2 (en) 2002-06-20 2005-09-27 02Micro International Limited Enabling circuit for avoiding negative voltage transients
US6756769B2 (en) 2002-06-20 2004-06-29 O2Micro International Limited Enabling circuit for avoiding negative voltage transients
KR100870007B1 (ko) * 2002-06-25 2008-11-21 삼성전자주식회사 백라이트 구동 장치
US7310177B2 (en) 2002-09-20 2007-12-18 Donnelly Corporation Electro-optic reflective element assembly
AU2003278863A1 (en) 2002-09-20 2004-04-08 Donnelly Corporation Mirror reflective element assembly
US6979959B2 (en) * 2002-12-13 2005-12-27 Microsemi Corporation Apparatus and method for striking a fluorescent lamp
US6778415B2 (en) * 2003-01-22 2004-08-17 O2Micro, Inc. Controller electrical power circuit supplying energy to a display device
JP3096242U (ja) * 2003-03-04 2003-09-12 船井電機株式会社 テレビ受像機および冷陰極管調光装置
US7057611B2 (en) * 2003-03-25 2006-06-06 02Micro International Limited Integrated power supply for an LCD panel
US6936975B2 (en) * 2003-04-15 2005-08-30 02Micro International Limited Power supply for an LCD panel
US7348735B2 (en) * 2003-05-01 2008-03-25 Inventive Holdings Llc Lamp driver
US7289037B2 (en) 2003-05-19 2007-10-30 Donnelly Corporation Mirror assembly for vehicle
US6897698B1 (en) 2003-05-30 2005-05-24 O2Micro International Limited Phase shifting and PWM driving circuits and methods
DE10340198B4 (de) * 2003-08-27 2009-03-12 Institut für Mikroelektronik- und Mechatronik-Systeme gGmbH Schaltungsanordnung zum Dimmen von Gasentladungslampen und Verfahren zu ihrem Betrieb
US7187139B2 (en) 2003-09-09 2007-03-06 Microsemi Corporation Split phase inverters for CCFL backlight system
US7183727B2 (en) * 2003-09-23 2007-02-27 Microsemi Corporation Optical and temperature feedbacks to control display brightness
US7446924B2 (en) 2003-10-02 2008-11-04 Donnelly Corporation Mirror reflective element assembly including electronic component
US6919694B2 (en) * 2003-10-02 2005-07-19 Monolithic Power Systems, Inc. Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship
US7308341B2 (en) 2003-10-14 2007-12-11 Donnelly Corporation Vehicle communication system
US7468722B2 (en) 2004-02-09 2008-12-23 Microsemi Corporation Method and apparatus to control display brightness with ambient light correction
US7394209B2 (en) * 2004-02-11 2008-07-01 02 Micro International Limited Liquid crystal display system with lamp feedback
US7112929B2 (en) * 2004-04-01 2006-09-26 Microsemi Corporation Full-bridge and half-bridge compatible driver timing schedule for direct drive backlight system
US7755595B2 (en) 2004-06-07 2010-07-13 Microsemi Corporation Dual-slope brightness control for transflective displays
EP1871148A1 (fr) * 2005-01-25 2007-12-26 Matsushita Electric Industrial Co., Ltd. Appareil de commande de retro-eclairage et appareil d'affichage
US7626749B2 (en) 2005-05-16 2009-12-01 Donnelly Corporation Vehicle mirror assembly with indicia at reflective element
US7414371B1 (en) 2005-11-21 2008-08-19 Microsemi Corporation Voltage regulation loop with variable gain control for inverter circuit
CN101433130A (zh) * 2006-04-24 2009-05-13 松下电器产业株式会社 背后照明控制装置和显示装置
US7569998B2 (en) 2006-07-06 2009-08-04 Microsemi Corporation Striking and open lamp regulation for CCFL controller
DE102006035071A1 (de) * 2006-07-28 2008-01-31 Minebea Co., Ltd., Kitasaku Vorrichtung und Verfahren zur Einstellung der Helligkeit einer Hintergrundbeleuchtung
TWI346925B (en) * 2006-08-28 2011-08-11 Au Optronics Corp Display and apparatus and method for power saving thereof
KR101311630B1 (ko) * 2006-10-12 2013-09-26 엘지디스플레이 주식회사 액정표시소자의 구동 장치 및 방법
US7541751B2 (en) * 2007-03-05 2009-06-02 Mdl Corporation Soft start control circuit for lighting
CN101364199B (zh) * 2007-08-06 2012-01-18 鸿富锦精密工业（深圳）有限公司 串行通信监测系统及监测设备
US8154418B2 (en) 2008-03-31 2012-04-10 Magna Mirrors Of America, Inc. Interior rearview mirror system
EP2319755A1 (fr) * 2008-08-28 2011-05-11 Mitsubishi Heavy Industries, Ltd. Procédé de construction et plateforme de construction de générateur éolien flottant
US9487144B2 (en) 2008-10-16 2016-11-08 Magna Mirrors Of America, Inc. Interior mirror assembly with display
US8093839B2 (en) * 2008-11-20 2012-01-10 Microsemi Corporation Method and apparatus for driving CCFL at low burst duty cycle rates
GB201209131D0 (en) 2012-05-24 2012-07-04 Subsea 7 Contracting Norway As Handling loads in offshore environments
US8878882B2 (en) 2012-05-29 2014-11-04 Gentex Corporation Segmented edge-lit backlight assembly for a display
CN103336664B (zh) * 2013-06-05 2016-10-05 南京熊猫电子股份有限公司 一种实现软键盘控制显示器背光的装置及方法
JP6441360B2 (ja) 2013-09-04 2018-12-19 ジェンテックス コーポレイション カメラシステムによって取得された画像を車両のバックミラー組立品に表示するための表示システム
US9788402B2 (en) 2015-03-23 2017-10-10 Luxor Scientific, Inc Enhanced variable control, current sensing drivers with zeta scan

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219760A (en) * 1979-03-22 1980-08-26 General Electric Company SEF Lamp dimming
JPS5694372A (en) * 1979-12-27 1981-07-30 Canon Inc Exposure control device
EP0104264A1 (fr) * 1982-09-24 1984-04-04 White Castle System, Inc. Source de courant réglable pour lampes à décharge de gaz et pour lampes analogues
FR2559334B1 (fr) * 1984-02-03 1988-02-26 Ssih Equipment Sa Dispositif d'alimentation pour commander l'intensite lumineuse d'au moins une lampe a decharge et utilisation dudit dispositif
US4682083A (en) * 1984-10-29 1987-07-21 General Electric Company Fluorescent lamp dimming adaptor kit
GB2178581B (en) * 1985-07-12 1989-07-19 Canon Kk Liquid crystal apparatus and driving method therefor
DE3528838A1 (de) * 1985-08-10 1987-02-12 Diehl Gmbh & Co Zuend- und dimmschaltung fuer eine leuchtstoffroehre
JP2698580B2 (ja) * 1987-03-09 1998-01-19 沖電気工業株式会社 電圧／パルス幅変換回路
FR2626419B1 (fr) * 1988-01-21 1990-06-29 Sgs Thomson Microelectronics Dispositif de surveillance de demagnetisation pour alimentation a decoupage a regulation primaire et secondaire
US5001386B1 (en) * 1989-12-22 1996-10-15 Lutron Electronics Co Circuit for dimming gas discharge lamps without introducing striations

Also Published As

Publication number Publication date
FR2649277B1 (fr) 1996-05-31
CA2019628A1 (fr) 1990-12-31
FR2649277A1 (fr) 1991-01-04
EP0406116B1 (fr) 1994-01-26
DE69006272D1 (de) 1994-03-10
EP0406116A1 (fr) 1991-01-02
US5105127A (en) 1992-04-14
DE69006272T2 (de) 1994-05-05
JPH0364895A (ja) 1991-03-20

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