GB1543722A - Display device energisation circuits - Google Patents

Display device energisation circuits

Info

Publication number
GB1543722A
GB1543722A GB26120/75A GB2612075A GB1543722A GB 1543722 A GB1543722 A GB 1543722A GB 26120/75 A GB26120/75 A GB 26120/75A GB 2612075 A GB2612075 A GB 2612075A GB 1543722 A GB1543722 A GB 1543722A
Authority
GB
United Kingdom
Prior art keywords
display device
energisation
circuits
energisation circuits
display
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
Application number
GB26120/75A
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB26120/75A priority Critical patent/GB1543722A/en
Publication of GB1543722A publication Critical patent/GB1543722A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • 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
    • H05B45/32—Pulse-control circuits
    • H05B45/327—Burst dimming
    • 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]
    • 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
    • H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
GB26120/75A 1976-06-11 1976-06-11 Display device energisation circuits Expired GB1543722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26120/75A GB1543722A (en) 1976-06-11 1976-06-11 Display device energisation circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26120/75A GB1543722A (en) 1976-06-11 1976-06-11 Display device energisation circuits

Publications (1)

Publication Number Publication Date
GB1543722A true GB1543722A (en) 1979-04-04

Family

ID=10238703

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26120/75A Expired GB1543722A (en) 1976-06-11 1976-06-11 Display device energisation circuits

Country Status (1)

Country Link
GB (1) GB1543722A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553267A (en) * 1981-07-31 1985-11-12 Crimmins James W Infrared telephone extension modulation system
GB2172120A (en) * 1985-03-09 1986-09-10 English Electric Valve Co Ltd Graticule illuminator circuit for night-sight
GB2175465A (en) * 1985-05-16 1986-11-26 Dewhurst Plc Light emitting diode operating circuit
GB2212010A (en) * 1987-11-04 1989-07-12 Amcor Ltd Radiation therapy apparatus using LED matrix
EP0442506A2 (en) * 1990-02-15 1991-08-21 Sharp Kabushiki Kaisha Image reading device
EP0567280A2 (en) * 1992-04-24 1993-10-27 Hughes Aircraft Company Quasi-resonant diode drive current source
FR2714564A1 (en) * 1993-12-28 1995-06-30 Etat Francais Labo Cl Ponts Ch Control process for light emitting beacon for maritime use providing coded light flash sequence
EP0716485A1 (en) * 1994-12-05 1996-06-12 Hughes Aircraft Company Diode drive current source
WO2000065880A1 (en) * 1999-04-22 2000-11-02 Sickinger, Monika Light source consisting of several successively connected leds
WO2004100614A1 (en) * 2003-05-07 2004-11-18 Koninklijke Philips Electronics N.V. Current control method and circuit for light emitting diodes
US7023147B2 (en) 2003-09-09 2006-04-04 Pentair Pool Products, Inc. Controller circuit
WO2011116843A1 (en) * 2010-03-23 2011-09-29 Osram Gesellschaft mit beschränkter Haftung Circuit arrangement and method for operating at least one led
US8207711B2 (en) 2008-08-15 2012-06-26 Analog Modules, Inc. Biphase laser diode driver and method
US8729870B2 (en) 2008-08-15 2014-05-20 Analog Modules, Inc. Biphase laser diode driver and method

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553267A (en) * 1981-07-31 1985-11-12 Crimmins James W Infrared telephone extension modulation system
GB2172120A (en) * 1985-03-09 1986-09-10 English Electric Valve Co Ltd Graticule illuminator circuit for night-sight
GB2175465A (en) * 1985-05-16 1986-11-26 Dewhurst Plc Light emitting diode operating circuit
GB2212010A (en) * 1987-11-04 1989-07-12 Amcor Ltd Radiation therapy apparatus using LED matrix
EP0442506A2 (en) * 1990-02-15 1991-08-21 Sharp Kabushiki Kaisha Image reading device
EP0442506A3 (en) * 1990-02-15 1991-12-11 Sharp Kabushiki Kaisha Light emitting device capable of readily controlling total quantity of light under balanced light emitting state of light emitting elements
US5229870A (en) * 1990-02-15 1993-07-20 Sharp Kabushiki Kaisha Light emitting device capable of readily controlling total quantity of light under a balanced light emitting state of light emitting elements
EP0567280A3 (en) * 1992-04-24 1994-04-20 Hughes Aircraft Co Quasi-resonant diode drive current source
EP0567280A2 (en) * 1992-04-24 1993-10-27 Hughes Aircraft Company Quasi-resonant diode drive current source
FR2714564A1 (en) * 1993-12-28 1995-06-30 Etat Francais Labo Cl Ponts Ch Control process for light emitting beacon for maritime use providing coded light flash sequence
EP0716485A1 (en) * 1994-12-05 1996-06-12 Hughes Aircraft Company Diode drive current source
US5736881A (en) * 1994-12-05 1998-04-07 Hughes Electronics Diode drive current source
WO2000065880A1 (en) * 1999-04-22 2000-11-02 Sickinger, Monika Light source consisting of several successively connected leds
WO2004100614A1 (en) * 2003-05-07 2004-11-18 Koninklijke Philips Electronics N.V. Current control method and circuit for light emitting diodes
US7023147B2 (en) 2003-09-09 2006-04-04 Pentair Pool Products, Inc. Controller circuit
US8207711B2 (en) 2008-08-15 2012-06-26 Analog Modules, Inc. Biphase laser diode driver and method
US8729870B2 (en) 2008-08-15 2014-05-20 Analog Modules, Inc. Biphase laser diode driver and method
WO2011116843A1 (en) * 2010-03-23 2011-09-29 Osram Gesellschaft mit beschränkter Haftung Circuit arrangement and method for operating at least one led

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee