NO20070120L - Fremgangsmate og system for forbedret dimmeopplosning ved en lyslast ved bruk av et flertall styringsfrekvenser - Google Patents

Fremgangsmate og system for forbedret dimmeopplosning ved en lyslast ved bruk av et flertall styringsfrekvenser

Info

Publication number
NO20070120L
NO20070120L NO20070120A NO20070120A NO20070120L NO 20070120 L NO20070120 L NO 20070120L NO 20070120 A NO20070120 A NO 20070120A NO 20070120 A NO20070120 A NO 20070120A NO 20070120 L NO20070120 L NO 20070120L
Authority
NO
Norway
Prior art keywords
pulses
frequencies
frequency
microcontroller
light load
Prior art date
Application number
NO20070120A
Other languages
English (en)
Inventor
Ulf Samuelsson
Original Assignee
Atmel Corp
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 Atmel Corp filed Critical Atmel Corp
Publication of NO20070120L publication Critical patent/NO20070120L/no

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
    • 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
    • H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation
    • 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
    • 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

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

Abstract

En mikrostyringsenhet eller en tilstandsmaskin som kontrollerer en lyslast ved bruk av en tidsgiverstruktur. Mikrostyringsenheten kan programmere tidsgiverstrukturen for å generere pulser der "gjennomsnitts"-frekvensen for en serie av pulser kan bli variert med en høyere oppløsning enn frekvensene for en enkelt puls. Variasjonene kan inntreffe uten videre inngrep fra mikrostyringsenhet/tilstandsmaskin. Pulsene blir brukt for å styre av- og/eller påtiden for lys. Tidsgiveren kan bli konfigurert for å modulere utganger raskt nok til å sikre at lyset ikke opptrer flimrende for det menneskelige øye ved å begrense antallet pulser i en ramme og ved å øke antallet av inntreffende frekvenser sammenlignet med opplagte implementeringer. Den foreliggende oppfinnelse støtter seg på det faktum at det menneskelige øye ikke er i stand til å detektere små frekvensendringer innenfor høyfrekvenssignaler og derfor bruker pulser av to eller flere frekvenser der frekvensene er nær hverandre. Gjennomsnittsfrekvensen kan så bli variert ved en mye høyere oppløsning enn en enkelt frekvens. 1
NO20070120A 2004-06-10 2007-01-09 Fremgangsmate og system for forbedret dimmeopplosning ved en lyslast ved bruk av et flertall styringsfrekvenser NO20070120L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/865,644 US7227317B2 (en) 2004-06-10 2004-06-10 Method and system for enhanced dimming resolution in a light ballast through use of multiple control frequencies
PCT/US2005/020156 WO2005124496A2 (en) 2004-06-10 2005-06-09 Method and system for enhanced dimming resolution in a light ballast through use of multiple control frequencies

Publications (1)

Publication Number Publication Date
NO20070120L true NO20070120L (no) 2007-03-12

Family

ID=35459844

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20070120A NO20070120L (no) 2004-06-10 2007-01-09 Fremgangsmate og system for forbedret dimmeopplosning ved en lyslast ved bruk av et flertall styringsfrekvenser

Country Status (7)

Country Link
US (1) US7227317B2 (no)
EP (1) EP1763713B1 (no)
CN (1) CN100561395C (no)
DE (1) DE602005024551D1 (no)
NO (1) NO20070120L (no)
TW (1) TWI343214B (no)
WO (1) WO2005124496A2 (no)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI323866B (en) * 2006-01-06 2010-04-21 Himax Tech Ltd An inverter-driving device and method
WO2008096306A1 (en) * 2007-02-06 2008-08-14 Koninklijke Philips Electronics N.V. Method and device for driving a gas discharge lamp
US8373643B2 (en) * 2008-10-03 2013-02-12 Freescale Semiconductor, Inc. Frequency synthesis and synchronization for LED drivers
US8698414B2 (en) * 2009-04-13 2014-04-15 Microchip Technology Incorporated High resolution pulse width modulation (PWM) frequency control using a tunable oscillator
US8228098B2 (en) * 2009-08-07 2012-07-24 Freescale Semiconductor, Inc. Pulse width modulation frequency conversion
US8237700B2 (en) * 2009-11-25 2012-08-07 Freescale Semiconductor, Inc. Synchronized phase-shifted pulse width modulation signal generation
US9490792B2 (en) * 2010-02-10 2016-11-08 Freescale Semiconductor, Inc. Pulse width modulation with effective high duty resolution
US8599915B2 (en) 2011-02-11 2013-12-03 Freescale Semiconductor, Inc. Phase-shifted pulse width modulation signal generation device and method therefor
CN103000123A (zh) * 2012-08-29 2013-03-27 北京集创北方科技有限公司 一种脉冲宽度调节装置
CN106793262B (zh) * 2016-07-14 2018-08-03 厦门理工学院 离散型pwm、多通道pwm的控制方法和led系统

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763394A (en) * 1971-09-03 1973-10-02 S Blanchard Stage lighting systems
DE68929285T2 (de) * 1988-04-12 2001-08-09 Canon K.K., Tokio/Tokyo Steuerungsgerät
US5589741A (en) * 1993-04-22 1996-12-31 Research Foundation For Mental Hygiene, Inc. System for creating naturalistic illumination cycles
US5519289A (en) 1994-11-07 1996-05-21 Jrs Technology Associates, Inc. Electronic ballast with lamp current correction circuit
US5612857A (en) 1995-06-11 1997-03-18 Canon Kabushiki Kaisha Power supply apparatus
US5691605A (en) 1995-03-31 1997-11-25 Philips Electronics North America Electronic ballast with interface circuitry for multiple dimming inputs
US5872429A (en) 1995-03-31 1999-02-16 Philips Electronics North America Corporation Coded communication system and method for controlling an electric lamp
US5650694A (en) 1995-03-31 1997-07-22 Philips Electronics North America Corporation Lamp controller with lamp status detection and safety circuitry
US5604411A (en) 1995-03-31 1997-02-18 Philips Electronics North America Corporation Electronic ballast having a triac dimming filter with preconditioner offset control
US5559395A (en) 1995-03-31 1996-09-24 Philips Electronics North America Corporation Electronic ballast with interface circuitry for phase angle dimming control
DE19546588A1 (de) * 1995-12-13 1997-06-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren und Schaltungsanordnung zum Betrieb einer Entladungslampe
TW379515B (en) 1997-07-10 2000-01-11 Koninkl Philips Electronics Nv Circuit arrangement
US6229432B1 (en) 1997-10-30 2001-05-08 Duane Patrick Fridley Intelligent transceiver module particularly suited for power line control systems
US6181066B1 (en) 1997-12-02 2001-01-30 Power Circuit Innovations, Inc. Frequency modulated ballast with loosely coupled transformer for parallel gas discharge lamp control
US6094017A (en) 1997-12-02 2000-07-25 Power Circuit Innovations, Inc. Dimming ballast and drive method for a metal halide lamp using a frequency controlled loosely coupled transformer
US6088249A (en) 1997-12-02 2000-07-11 Power Circuit Innovations, Inc. Frequency modulated ballast with loosely coupled transformer
JP3556508B2 (ja) * 1999-03-15 2004-08-18 オリンパス株式会社 ランプ寿命計及び内視鏡光源装置
US6100644A (en) 1999-04-29 2000-08-08 Titus; Charles H. Dimmable and non-dimmable electronic ballast for plural fluorescent lamps
JP3350010B2 (ja) 1999-11-26 2002-11-25 エヌイーシーマイクロシステム株式会社 ３相パルス幅変調波形発生装置
US6486616B1 (en) 2000-02-25 2002-11-26 Osram Sylvania Inc. Dual control dimming ballast
US6339298B1 (en) 2000-05-15 2002-01-15 General Electric Company Dimming ballast resonant feedback circuit
US6710993B1 (en) * 2000-11-27 2004-03-23 Koninklijke Philips Electronics N.V. Method and apparatus for providing overload protection for a circuit
US6448713B1 (en) * 2000-12-07 2002-09-10 General Electric Company Sensing and control for dimmable electronic ballast
JP3681121B2 (ja) * 2001-06-15 2005-08-10 キヤノン株式会社 駆動回路及び表示装置

Also Published As

Publication number Publication date
EP1763713A2 (en) 2007-03-21
US20050275355A1 (en) 2005-12-15
WO2005124496A2 (en) 2005-12-29
CN101006405A (zh) 2007-07-25
EP1763713B1 (en) 2010-11-03
CN100561395C (zh) 2009-11-18
DE602005024551D1 (de) 2010-12-16
WO2005124496A3 (en) 2006-10-05
TW200605676A (en) 2006-02-01
EP1763713A4 (en) 2008-09-10
TWI343214B (en) 2011-06-01
US7227317B2 (en) 2007-06-05

Similar Documents

Publication Publication Date Title
NO20070120L (no) Fremgangsmate og system for forbedret dimmeopplosning ved en lyslast ved bruk av et flertall styringsfrekvenser
WO2009055328A3 (en) Motion-adaptive alternating gamma drive for a liquid crystal display
TWI533273B (zh) 電力管理方法與電力管理裝置
EP3660830A1 (en) Multi-partition dynamic backlight driving method and display apparatus
EP2741276A9 (en) Backlight driving method, backlight driving device, and display device
KR102370331B1 (ko) 표시 장치 및 이의 구동 방법
EP3916789A4 (en) PIXEL ARRANGEMENT STRUCTURE, DISPLAY PANEL AND DISPLAY DEVICE
US9723690B2 (en) Method and device for adjusting indoor brightness and smart home control system
EP1560194A8 (en) Dynamically selecting either frame rate conversion (FRC) or pixel overdrive in an LCD panel based display
WO2020160156A3 (en) Anti-gal3 antibodies and uses thereof
TW200708823A (en) Image processing apparatus, liquid crystal display apparatus and color correction method
WO2007090164A3 (en) Systems and methods for pulse width modulating asymmetric signal levels
EP3012960A3 (en) Method and device for generating pwm pulses for neutral-point-clamped multi-level inverter
EP1993090A3 (en) Liquid crystal display device
RU2012115477A (ru) Устройство отображения изображения
TW200506445A (en) Display device
WO2008016036A1 (fr) dispositif de traitement d'image et procédé de traitement d'image
AU2011309796B2 (en) Automatic darkening filter (ADF) eye protection device with improved drive circuitry
CN102937480A (zh) 一种环境光频率检测的方法、装置及移动终端
CN102810301A (zh) 液晶显示器和控制液晶显示器像素电压的极性变换的方法
EP3879570A4 (en) PIXEL STRUCTURE, DISPLAY PANEL AND DISPLAY DEVICE
US9437147B2 (en) Polarity inversion driving method, driving apparatus and liquid crystal display device
JP2010097022A (ja) バックライト駆動装置
EP2432240A3 (en) Viewing glasses and image beam adjustment method thereof
EP2056452A3 (en) Signal generating apparatus and class-D- amplifying apparatus

Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application