TWI341647B - - Google Patents

Info

Publication number
TWI341647B
TWI341647B TW094105873A TW94105873A TWI341647B TW I341647 B TWI341647 B TW I341647B TW 094105873 A TW094105873 A TW 094105873A TW 94105873 A TW94105873 A TW 94105873A TW I341647 B TWI341647 B TW I341647B
Authority
TW
Taiwan
Application number
TW094105873A
Other versions
TW200607237A (en
Inventor
Isao Yamamoto
Tomoyuki Ito
Hiroyuki Iwaki
Original Assignee
Rohm Co Ltd
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 Rohm Co Ltd filed Critical Rohm Co Ltd
Publication of TW200607237A publication Critical patent/TW200607237A/zh
Application granted granted Critical
Publication of TWI341647B publication Critical patent/TWI341647B/zh

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • 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
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
    • 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]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/38—Switched mode power supply [SMPS] using boost topology
    • 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
    • H05B47/155—Coordinated control of two or more light sources
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Led Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)
TW094105873A 2004-02-27 2005-02-25 Drive control circuit, luminescence control circuit, communication device and drive control method TW200607237A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004055373 2004-02-27
JP2005029757A JP4772336B2 (ja) 2004-02-27 2005-02-04 駆動制御回路

Publications (2)

Publication Number Publication Date
TW200607237A TW200607237A (en) 2006-02-16
TWI341647B true TWI341647B (zh) 2011-05-01

Family

ID=34921649

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094105873A TW200607237A (en) 2004-02-27 2005-02-25 Drive control circuit, luminescence control circuit, communication device and drive control method

Country Status (5)

Country Link
US (2) US7483021B2 (zh)
JP (1) JP4772336B2 (zh)
KR (1) KR20060043186A (zh)
CN (1) CN1661917B (zh)
TW (1) TW200607237A (zh)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4772336B2 (ja) * 2004-02-27 2011-09-14 ローム株式会社 駆動制御回路
JP2007281424A (ja) * 2006-03-15 2007-10-25 Casio Comput Co Ltd 発光素子の駆動装置、発光素子の駆動方法及び発光素子の駆動プログラム
US8373355B2 (en) * 2006-11-09 2013-02-12 Apple Inc. Brightness control of a status indicator light
JP5521261B2 (ja) * 2006-11-28 2014-06-11 日本電気株式会社 携帯端末、該携帯端末に用いられる発光体駆動制御方法及び発光体駆動制御プログラム
CN101193478B (zh) * 2006-11-28 2010-06-23 立锜科技股份有限公司 背光控制电路
EP2793217A3 (en) * 2007-03-26 2015-02-18 NEC Corporation Portable phone terminal, image display controlling method, program thereof, and program recording medium
KR20090047061A (ko) * 2007-11-07 2009-05-12 삼성전자주식회사 백라이트 어셈블리 및 이를 갖는 표시장치
US8059114B2 (en) * 2007-11-14 2011-11-15 Infineon Technologies Ag Organic light emitting diode driver
US8552971B2 (en) 2008-03-25 2013-10-08 Rohm Co., Ltd. Driving circuit for light emitting diode
CN102014539B (zh) * 2009-09-08 2013-08-21 群康科技(深圳)有限公司 背光控制电路
WO2011093107A1 (ja) 2010-02-01 2011-08-04 パナソニック株式会社 発光素子駆動装置及び携帯機器
JP5595126B2 (ja) * 2010-06-03 2014-09-24 ローム株式会社 Ｌｅｄ駆動装置およびこれを備えた電子機器
WO2012132389A1 (ja) * 2011-03-31 2012-10-04 シャープ株式会社 バックライトシステム
US8963810B2 (en) * 2011-06-27 2015-02-24 Sct Technology, Ltd. LED display systems
US8963811B2 (en) * 2011-06-27 2015-02-24 Sct Technology, Ltd. LED display systems
CN102958218B (zh) * 2011-08-17 2015-01-14 浙江英飞特节能技术有限公司 光源控制方法、装置及系统
WO2013064959A1 (en) * 2011-11-04 2013-05-10 Koninklijke Philips Electronics N.V. Device and method for multi-spectral illumination
CN104883780B (zh) * 2015-05-19 2017-06-23 深圳创维－Rgb电子有限公司 多通道双模式数字控制led驱动电路及led灯
JP6906190B2 (ja) * 2017-03-01 2021-07-21 パナソニックＩｐマネジメント株式会社 点灯装置、電子機器及び照明器具
CN110059047B (zh) * 2018-01-18 2022-05-31 华为技术有限公司 驱动电路以及串行解串器
CN109864706A (zh) * 2019-01-08 2019-06-11 廖旺才 用户状态信息的提示方法、装置、计算机设备和存储介质
KR20210145351A (ko) * 2020-05-25 2021-12-02 에스케이하이닉스 주식회사 멀티비트 데이터를 송신하는 송신기

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6054094A (ja) * 1983-09-01 1985-03-28 三菱電機株式会社 発光ダイオ−ドの制御回路
US5257039A (en) * 1991-09-23 1993-10-26 Eastman Kodak Company Non-impact printhead and driver circuit for use therewith
US5818419A (en) * 1995-10-31 1998-10-06 Fujitsu Limited Display device and method for driving the same
GB9704149D0 (en) * 1996-08-16 1997-04-16 Philips Electronics Nv Active matrix display devices and methods of driving such
US7012600B2 (en) * 1999-04-30 2006-03-14 E Ink Corporation Methods for driving bistable electro-optic displays, and apparatus for use therein
JP3529718B2 (ja) * 2000-10-03 2004-05-24 ローム株式会社 携帯形電話機の発光装置およびその駆動ｉｃ
JP4772336B2 (ja) * 2004-02-27 2011-09-14 ローム株式会社 駆動制御回路
JP4694801B2 (ja) * 2004-08-11 2011-06-08 三洋電機株式会社 Ｌｅｄ制御回路

Also Published As

Publication number Publication date
CN1661917A (zh) 2005-08-31
US7483021B2 (en) 2009-01-27
CN1661917B (zh) 2011-06-08
KR20060043186A (ko) 2006-05-15
TW200607237A (en) 2006-02-16
JP2005277391A (ja) 2005-10-06
US20090096382A1 (en) 2009-04-16
JP4772336B2 (ja) 2011-09-14
US20050202851A1 (en) 2005-09-15

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees