JP4772336B2 - 駆動制御回路 - Google Patents

駆動制御回路 Download PDF

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Publication number
JP4772336B2
JP4772336B2 JP2005029757A JP2005029757A JP4772336B2 JP 4772336 B2 JP4772336 B2 JP 4772336B2 JP 2005029757 A JP2005029757 A JP 2005029757A JP 2005029757 A JP2005029757 A JP 2005029757A JP 4772336 B2 JP4772336 B2 JP 4772336B2
Authority
JP
Japan
Prior art keywords
pulse width
signal
value
pwm
output
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP2005029757A
Other languages
English (en)
Japanese (ja)
Other versions
JP2005277391A (ja
Inventor
勲 山本
智将 伊藤
宏行 岩城
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rohm Co Ltd
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
Priority to JP2005029757A priority Critical patent/JP4772336B2/ja
Priority to CN2005100082981A priority patent/CN1661917B/zh
Priority to KR1020050016119A priority patent/KR20060043186A/ko
Priority to TW094105873A priority patent/TW200607237A/zh
Priority to US11/068,103 priority patent/US7483021B2/en
Publication of JP2005277391A publication Critical patent/JP2005277391A/ja
Priority to US12/335,277 priority patent/US20090096382A1/en
Application granted granted Critical
Publication of JP4772336B2 publication Critical patent/JP4772336B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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 El Displays (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
JP2005029757A 2004-02-27 2005-02-04 駆動制御回路 Expired - Fee Related JP4772336B2 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2005029757A JP4772336B2 (ja) 2004-02-27 2005-02-04 駆動制御回路
CN2005100082981A CN1661917B (zh) 2004-02-27 2005-02-21 驱动控制电路、发光控制电路、通信装置及驱动控制方法
KR1020050016119A KR20060043186A (ko) 2004-02-27 2005-02-25 구동 제어 회로, 발광 제어 회로, 통신 장치 및 구동 제어방법
TW094105873A TW200607237A (en) 2004-02-27 2005-02-25 Drive control circuit, luminescence control circuit, communication device and drive control method
US11/068,103 US7483021B2 (en) 2004-02-27 2005-02-28 Drive control circuit, emission control circuit, communication apparatus and drive control method
US12/335,277 US20090096382A1 (en) 2004-02-27 2008-12-15 Drive control circuit, emission control circuit, communication apparatus and drive control method

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2004055373 2004-02-27
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
JP2005277391A JP2005277391A (ja) 2005-10-06
JP4772336B2 true JP4772336B2 (ja) 2011-09-14

Family

ID=34921649

Family Applications (1)

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

Country Status (5)

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

Families Citing this family (23)

* 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
CN100553393C (zh) * 2006-11-06 2009-10-21 台湾类比科技股份有限公司 发光二极管的调光方法
US8373355B2 (en) * 2006-11-09 2013-02-12 Apple Inc. Brightness control of a status indicator light
CN101193478B (zh) * 2006-11-28 2010-06-23 立锜科技股份有限公司 背光控制电路
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
WO2008117784A1 (ja) * 2007-03-26 2008-10-02 Nec Corporation 携帯電話端末、画像表示制御方法、そのプログラムおよびプログラム記録媒体
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
CN101681974B (zh) * 2008-03-25 2012-11-28 罗姆股份有限公司 发光二极管的驱动电路
CN102014539B (zh) * 2009-09-08 2013-08-21 群康科技(深圳)有限公司 背光控制电路
CN102725685A (zh) * 2010-02-01 2012-10-10 松下电器产业株式会社 发光元件驱动装置及便携式设备
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
KR102715002B1 (ko) * 2020-05-25 2024-10-07 에스케이하이닉스 주식회사 멀티비트 데이터를 송신하는 송신기

Family Cites Families (10)

* 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
JPH06310269A (ja) 1993-04-20 1994-11-04 Hitachi Home Tec Ltd マグネトロン駆動制御回路
US5818419A (en) * 1995-10-31 1998-10-06 Fujitsu Limited Display device and method for driving the same
JP3716483B2 (ja) 1996-03-19 2005-11-16 大同特殊鋼株式会社 発光ダイオード
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
US20050202851A1 (en) 2005-09-15
TW200607237A (en) 2006-02-16
TWI341647B (enExample) 2011-05-01
KR20060043186A (ko) 2006-05-15
US20090096382A1 (en) 2009-04-16
CN1661917B (zh) 2011-06-08
US7483021B2 (en) 2009-01-27
CN1661917A (zh) 2005-08-31
JP2005277391A (ja) 2005-10-06

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