GB2395074B - Control circuit - Google Patents

Control circuit

Info

Publication number
GB2395074B
GB2395074B GB0225667A GB0225667A GB2395074B GB 2395074 B GB2395074 B GB 2395074B GB 0225667 A GB0225667 A GB 0225667A GB 0225667 A GB0225667 A GB 0225667A GB 2395074 B GB2395074 B GB 2395074B
Authority
GB
United Kingdom
Prior art keywords
control circuit
circuit
control
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 - Lifetime
Application number
GB0225667A
Other versions
GB0225667D0 (en
GB2395074A (en
Inventor
Barry Wright
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.)
Dorman Traffic Products Ltd
Original Assignee
Dorman Traffic Products 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 Dorman Traffic Products Ltd filed Critical Dorman Traffic Products Ltd
Priority to GB0225667A priority Critical patent/GB2395074B/en
Publication of GB0225667D0 publication Critical patent/GB0225667D0/en
Publication of GB2395074A publication Critical patent/GB2395074A/en
Application granted granted Critical
Publication of GB2395074B publication Critical patent/GB2395074B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/22—Controlling the colour of the light using optical feedback
    • 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]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
    • 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
    • H05B45/28—Controlling the colour of the light using temperature feedback
GB0225667A 2002-11-04 2002-11-04 Control circuit Expired - Lifetime GB2395074B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0225667A GB2395074B (en) 2002-11-04 2002-11-04 Control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0225667A GB2395074B (en) 2002-11-04 2002-11-04 Control circuit

Publications (3)

Publication Number Publication Date
GB0225667D0 GB0225667D0 (en) 2002-12-11
GB2395074A GB2395074A (en) 2004-05-12
GB2395074B true GB2395074B (en) 2005-09-28

Family

ID=9947158

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0225667A Expired - Lifetime GB2395074B (en) 2002-11-04 2002-11-04 Control circuit

Country Status (1)

Country Link
GB (1) GB2395074B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2419750B (en) * 2004-10-28 2007-03-21 Premier Image Technology Corp LED controller and control method thereof
WO2006056066A1 (en) * 2004-11-29 2006-06-01 Tir Systems Ltd. Integrated modular lighting unit
JP2013065528A (en) * 2011-09-20 2013-04-11 Toshiba Lighting & Technology Corp Led lighting device and led illuminating device
WO2013056117A1 (en) 2011-10-13 2013-04-18 Dolby Laboratories Licensing Corporation Methods and apparatus for backlighting dual modulation display devices
US8888328B2 (en) 2012-12-12 2014-11-18 Orbotech Ltd. Light engine

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797690A (en) * 1980-12-10 1982-06-17 Fujitsu Ltd Driving method for light emitting element
JPS6195584A (en) * 1984-10-16 1986-05-14 Mitsubishi Electric Corp Emitting light wavelength stabilizer
US4607158A (en) * 1982-12-30 1986-08-19 Asea Aktiebolag Temperature compensated light-generating device
JPH02295542A (en) * 1989-05-10 1990-12-06 Sumitomo Electric Ind Ltd Optical sensor
US6127783A (en) * 1998-12-18 2000-10-03 Philips Electronics North America Corp. LED luminaire with electronically adjusted color balance
US6305818B1 (en) * 1998-03-19 2001-10-23 Ppt Vision, Inc. Method and apparatus for L.E.D. illumination
US20020135572A1 (en) * 2001-01-16 2002-09-26 Visteon Global Technologies, Inc. Temperature compensated parallel LED drive circuit
EP1374643A1 (en) * 2001-03-29 2004-01-02 Koninklijke Philips Electronics N.V. System for rgb based led luminary
WO2004014110A1 (en) * 2002-08-01 2004-02-12 Cunningham David W Method for controlling the luminous flux spectrum of a lighting fixture

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797690A (en) * 1980-12-10 1982-06-17 Fujitsu Ltd Driving method for light emitting element
US4607158A (en) * 1982-12-30 1986-08-19 Asea Aktiebolag Temperature compensated light-generating device
JPS6195584A (en) * 1984-10-16 1986-05-14 Mitsubishi Electric Corp Emitting light wavelength stabilizer
JPH02295542A (en) * 1989-05-10 1990-12-06 Sumitomo Electric Ind Ltd Optical sensor
US6305818B1 (en) * 1998-03-19 2001-10-23 Ppt Vision, Inc. Method and apparatus for L.E.D. illumination
US6127783A (en) * 1998-12-18 2000-10-03 Philips Electronics North America Corp. LED luminaire with electronically adjusted color balance
US20020135572A1 (en) * 2001-01-16 2002-09-26 Visteon Global Technologies, Inc. Temperature compensated parallel LED drive circuit
EP1374643A1 (en) * 2001-03-29 2004-01-02 Koninklijke Philips Electronics N.V. System for rgb based led luminary
WO2004014110A1 (en) * 2002-08-01 2004-02-12 Cunningham David W Method for controlling the luminous flux spectrum of a lighting fixture

Also Published As

Publication number Publication date
GB0225667D0 (en) 2002-12-11
GB2395074A (en) 2004-05-12

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20221103