EP1528785A1 - Device and method for controlling the color of a light source - Google Patents

Device and method for controlling the color of a light source Download PDF

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Publication number
EP1528785A1
EP1528785A1 EP04005538A EP04005538A EP1528785A1 EP 1528785 A1 EP1528785 A1 EP 1528785A1 EP 04005538 A EP04005538 A EP 04005538A EP 04005538 A EP04005538 A EP 04005538A EP 1528785 A1 EP1528785 A1 EP 1528785A1
Authority
EP
European Patent Office
Prior art keywords
color
control
luminous
lighting source
microprocessor
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.)
Withdrawn
Application number
EP04005538A
Other languages
German (de)
English (en)
French (fr)
Inventor
Piero Magnaghi
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.)
Archimede Elettronica Srl
Original Assignee
Archimede Elettronica Srl
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 Archimede Elettronica Srl filed Critical Archimede Elettronica Srl
Publication of EP1528785A1 publication Critical patent/EP1528785A1/en
Withdrawn legal-status Critical Current

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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

Definitions

  • the present invention relates to a method and a device for controlling the color of the light emitted by a lighting source consisting of a plurality of luminous sources having different colors from one another.
  • Prior art control devices use for example circuits commanded by three separate control buttons, one for each primary color.
  • the intensity of the light emission of each of the colored light sources must be varied by acting on each of the respective control buttons.
  • One of the main drawbacks of the prior art devices is the difficulty in regulating, as often it is necessary to vary the intensity of emission of each of the light sources several times in order to obtain the desired color.
  • the user should previously know the percentage of intensity of each of the primary colors composing the shade of color desired in order to achieve the result in brief time frames.
  • the object of the present invention is to provide a novel device and a novel method for controlling the color of the light emitted by a lighting source enabling to overcome the prior art problems.
  • One particular object of the present invention is to provide a control device which is particularly simple to use and a control method which is particularly easy to implement.
  • Another particular object of the present invention is to make a control device that is simple and economical from a constructive point of view and that can be easily installed without creating space problems.
  • a device for controlling the color of a lighting source consisting of a plurality of luminous sources colored in a different way to one another, characterised by comprising a control circuit having at least one microprocessor programmed to receive commands from a single button and thus activate at least the switching on/off functions and those of the variation of the color of the light emitted by the lighting source.
  • a control circuit is provided with at least one programmed microprocessor.
  • the latter is able to detect the time during which pressure is applied on the control button so as to distinguish a discrete pressure applied on the control button for a brief time, from continuous pressure.
  • the lighting source switching on/off functions are activated, whereas in the second case the function of varying the color of the light emitted from the lighting source is activated.
  • three outputs of the microprocessor control circuit are provided, which outputs are destined to the control of the lighting source of the red light, green light and blue light respectively.
  • the outputs emit control signals that give a periodic sinusoidal shape to the intensity of the emission of each luminous source, with phase shift that is varied continuously when continuous pressure is applied on the single control button.
  • a power block 1 is shown being input with power supply voltage, for example alternating current at 220 V and output a reduced direct current voltage.
  • the value of the reduced direct current is selected to power a control circuit 10 and the driving circuits 2R, 2G and 2B of the respective red light 3R, green light 3G and blue light 3B sources.
  • Each of the driving circuits 2R, 2G and 2B comprises an adjustable constant current generator.
  • control circuit 10 To the control circuit 10 it is connected a single control button 5 through which at least the switching on/off functions can be activated as well as at least those of the variation of the color of the light emitted from the lighting source consisting of the three luminous sources 3R, 3G and 3B.
  • the luminous sources consist of power LED groups, but it should be noted that the principles of the present invention are also applicable to other luminous emission means, such as, for example, incandescent lamps or the like.
  • the circuit diagram of Figure 2 represents in greater detail the control circuit 10 and at least one of the driving circuits (the block 2R of Figure 1) of the red luminous source.
  • the input of the low voltage direct current power supply is indicated by the numerical reference 20.
  • a microprocessor 11 is provided that is programmed to receive in input the commands from the single button 5, for example by detecting the time during which pressure is applied on the control button 5.
  • a microprocessor suitable to this those of the 908Q series distributed by Motorola can be mentioned.
  • the microprocessor 11 in the control circuit 10 comprises three independent outputs, i.e. 12R, 12G and 12B that send the command signals to the respective driving circuits of the light sources.
  • control signal at output 12R is input to the driving circuit 2R and, in particular, to an integrated device 21 for power control, such as an LM2594-type integrated device distributed by National Semiconductor.
  • integrated device 21 for power control such as an LM2594-type integrated device distributed by National Semiconductor.
  • the remainder of the circuiting of the adjustable constant current generator, known per se, is schematically represented in a block 22 from which power supply terminals 30R of the red light source come out.
  • the activation of the device according to the present invention by the user is particularly easy and user friendly.
  • the microprocessor is advantageously programmed to maintain the setting of the luminous intensity of each of the controlled light sources so that, when subsequently switched on, the lighting is reproposed with the same color.
  • Another possible function is that of being able to apply continuous pressure on the control button 5 for a preset period in order to take all the light sources back to their maximum intensity, so as to obtain a white light.
  • This can be made by the microprocessor, which is programmed to detect and distinguish the time during which pressure is applied on the control button 5.
  • the principle of the invention in order to enable the generation of an infinite number of colors, is based on a calculation algorithm that takes into account certain factors.
  • each of the red, green and blue luminous sources can be generated with 256 different intensity levels. Therefore considering the three base color sources alone, there are 256 3 possible combinations, i.e. some 2,097,000 combinations. Starting from the color white, in which all the other luminous sources start from the maximum intensity level, the time necessary to be able to visualise the all the possible colors would be very long. For this reason, this kind of possibility is in fact impracticable.
  • the microprocessor is instead programmed to be able to achieve the desired color in a short timeframe.
  • the device by holding the control button 5 pressed, the device generates for example the sequence of red, violet, blue, light blue, green, orange, etc, in a short time; by holding the button 5 pressed, the sequence of colors is repeated but with different shades, and so on every time the cycle repeats. This change of shade allows to generate for example a green color with different shades at each cycle.
  • the number of the luminous sources that can be controlled by the device according to the invention may also be different from the three base ones represented herein as an example.
  • the colors herein represented that is red, green and blue, luminous sources with different colors may also be selected.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
EP04005538A 2003-10-14 2004-03-09 Device and method for controlling the color of a light source Withdrawn EP1528785A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001987A ITMI20031987A1 (it) 2003-10-14 2003-10-14 Dispositivo e metodo per il controllo del colore di una sorgente di illuminazione
ITMI20031987 2003-10-14

Publications (1)

Publication Number Publication Date
EP1528785A1 true EP1528785A1 (en) 2005-05-04

Family

ID=34401309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04005538A Withdrawn EP1528785A1 (en) 2003-10-14 2004-03-09 Device and method for controlling the color of a light source

Country Status (2)

Country Link
EP (1) EP1528785A1 (it)
IT (1) ITMI20031987A1 (it)

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007026170A2 (en) * 2005-09-03 2007-03-08 E-Light Limited Improvements to lighting systems
WO2008142601A2 (en) 2007-05-16 2008-11-27 Koninklijke Philips Electronics N. V. Button based color navigation method and device in a lighting or visualization system
US7667408B2 (en) 2007-03-12 2010-02-23 Cirrus Logic, Inc. Lighting system with lighting dimmer output mapping
US7696913B2 (en) 2007-05-02 2010-04-13 Cirrus Logic, Inc. Signal processing system using delta-sigma modulation having an internal stabilizer path with direct output-to-integrator connection
US7719246B2 (en) 2007-05-02 2010-05-18 Cirrus Logic, Inc. Power control system using a nonlinear delta-sigma modulator with nonlinear power conversion process modeling
US7755525B2 (en) 2008-01-30 2010-07-13 Cirrus Logic, Inc. Delta sigma modulator with unavailable output values
US7759881B1 (en) 2008-03-31 2010-07-20 Cirrus Logic, Inc. LED lighting system with a multiple mode current control dimming strategy
US7804256B2 (en) 2007-03-12 2010-09-28 Cirrus Logic, Inc. Power control system for current regulated light sources
US7804697B2 (en) 2007-12-11 2010-09-28 Cirrus Logic, Inc. History-independent noise-immune modulated transformer-coupled gate control signaling method and apparatus
US7980726B2 (en) 2006-03-13 2011-07-19 Koninklijke Philips Electronics N.V. Control device for controlling the color of light emitted from a light source
US7994863B2 (en) 2008-12-31 2011-08-09 Cirrus Logic, Inc. Electronic system having common mode voltage range enhancement
US8008898B2 (en) 2008-01-30 2011-08-30 Cirrus Logic, Inc. Switching regulator with boosted auxiliary winding supply
US8008902B2 (en) 2008-06-25 2011-08-30 Cirrus Logic, Inc. Hysteretic buck converter having dynamic thresholds
US8014176B2 (en) 2008-07-25 2011-09-06 Cirrus Logic, Inc. Resonant switching power converter with burst mode transition shaping
US8018171B1 (en) 2007-03-12 2011-09-13 Cirrus Logic, Inc. Multi-function duty cycle modifier
US8022683B2 (en) 2008-01-30 2011-09-20 Cirrus Logic, Inc. Powering a power supply integrated circuit with sense current
US8076920B1 (en) 2007-03-12 2011-12-13 Cirrus Logic, Inc. Switching power converter and control system
US8102127B2 (en) 2007-06-24 2012-01-24 Cirrus Logic, Inc. Hybrid gas discharge lamp-LED lighting system
US8179110B2 (en) 2008-09-30 2012-05-15 Cirrus Logic Inc. Adjustable constant current source with continuous conduction mode (“CCM”) and discontinuous conduction mode (“DCM”) operation
US8198874B2 (en) 2009-06-30 2012-06-12 Cirrus Logic, Inc. Switching power converter with current sensing transformer auxiliary power supply
US8212491B2 (en) 2008-07-25 2012-07-03 Cirrus Logic, Inc. Switching power converter control with triac-based leading edge dimmer compatibility
US8212493B2 (en) 2009-06-30 2012-07-03 Cirrus Logic, Inc. Low energy transfer mode for auxiliary power supply operation in a cascaded switching power converter
US8222872B1 (en) 2008-09-30 2012-07-17 Cirrus Logic, Inc. Switching power converter with selectable mode auxiliary power supply
US8242711B2 (en) 2007-03-30 2012-08-14 Hold IP Limited Lighting systems
US8248145B2 (en) 2009-06-30 2012-08-21 Cirrus Logic, Inc. Cascode configured switching using at least one low breakdown voltage internal, integrated circuit switch to control at least one high breakdown voltage external switch
US8279079B2 (en) 2006-03-13 2012-10-02 Koninklijke Philips Electronics N.V. Control device for controlling the hue of light emitted from a light source
US8288954B2 (en) 2008-12-07 2012-10-16 Cirrus Logic, Inc. Primary-side based control of secondary-side current for a transformer
US8299722B2 (en) 2008-12-12 2012-10-30 Cirrus Logic, Inc. Time division light output sensing and brightness adjustment for different spectra of light emitting diodes
US8344707B2 (en) 2008-07-25 2013-01-01 Cirrus Logic, Inc. Current sensing in a switching power converter
US8362707B2 (en) 2008-12-12 2013-01-29 Cirrus Logic, Inc. Light emitting diode based lighting system with time division ambient light feedback response
US8362838B2 (en) 2007-01-19 2013-01-29 Cirrus Logic, Inc. Multi-stage amplifier with multiple sets of fixed and variable voltage rails
US8482223B2 (en) 2009-04-30 2013-07-09 Cirrus Logic, Inc. Calibration of lamps
US8487546B2 (en) 2008-08-29 2013-07-16 Cirrus Logic, Inc. LED lighting system with accurate current control
US8576589B2 (en) 2008-01-30 2013-11-05 Cirrus Logic, Inc. Switch state controller with a sense current generated operating voltage
US8587217B2 (en) 2007-08-24 2013-11-19 Cirrus Logic, Inc. Multi-LED control
US8654483B2 (en) 2009-11-09 2014-02-18 Cirrus Logic, Inc. Power system having voltage-based monitoring for over current protection
US8729811B2 (en) 2010-07-30 2014-05-20 Cirrus Logic, Inc. Dimming multiple lighting devices by alternating energy transfer from a magnetic storage element
US8823289B2 (en) 2011-03-24 2014-09-02 Cirrus Logic, Inc. Color coordination of electronic light sources with dimming and temperature responsiveness
US8912734B2 (en) 2011-03-24 2014-12-16 Cirrus Logic, Inc. Color mixing of electronic light sources with correlation between phase-cut dimmer angle and predetermined black body radiation function
US8963535B1 (en) 2009-06-30 2015-02-24 Cirrus Logic, Inc. Switch controlled current sensing using a hall effect sensor
US9124193B2 (en) 2008-10-08 2015-09-01 Holdip Limited Power adaptors
US9155174B2 (en) 2009-09-30 2015-10-06 Cirrus Logic, Inc. Phase control dimming compatible lighting systems
US9173261B2 (en) 2010-07-30 2015-10-27 Wesley L. Mokry Secondary-side alternating energy transfer control with inverted reference and LED-derived power supply
US9189996B2 (en) 2013-12-17 2015-11-17 Ephesus Lighting, Inc. Selectable, zone-based control for high intensity LED illumination system
US9204503B1 (en) 2012-07-03 2015-12-01 Philips International, B.V. Systems and methods for dimming multiple lighting devices by alternating transfer from a magnetic storage element
WO2017024269A1 (en) * 2015-08-05 2017-02-09 Playhard, Inc. Systems and methods for selection of display mode using a single button lighting module
JP2017107865A (ja) * 2017-02-09 2017-06-15 シャープ株式会社 照明装置
US9730302B2 (en) 2015-12-28 2017-08-08 Ephesus Lighting, Inc. System and method for control of an illumination device
US9736894B2 (en) 2013-12-12 2017-08-15 Verdi Vision Limited Improvements relating to power adaptors
US10790762B2 (en) 2013-05-23 2020-09-29 Adp Corporate Limited Relating to power adaptors

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WO2001082657A1 (en) * 2000-04-24 2001-11-01 Color Kinetics Incorporated Light-emitting diode based products
WO2003015067A1 (en) * 2001-08-09 2003-02-20 Guzman, Robert, G. Led light apparatus with instantly adjustable color and intensity
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Patent Citations (4)

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US20030133292A1 (en) * 1999-11-18 2003-07-17 Mueller George G. Methods and apparatus for generating and modulating white light illumination conditions
EP1113709A2 (en) * 1999-12-28 2001-07-04 Avix Inc. Light control for led lighting equipment
WO2001082657A1 (en) * 2000-04-24 2001-11-01 Color Kinetics Incorporated Light-emitting diode based products
WO2003015067A1 (en) * 2001-08-09 2003-02-20 Guzman, Robert, G. Led light apparatus with instantly adjustable color and intensity

Cited By (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007026170A2 (en) * 2005-09-03 2007-03-08 E-Light Limited Improvements to lighting systems
WO2007026170A3 (en) * 2005-09-03 2007-06-14 Light Ltd E Improvements to lighting systems
US8279079B2 (en) 2006-03-13 2012-10-02 Koninklijke Philips Electronics N.V. Control device for controlling the hue of light emitted from a light source
US7980726B2 (en) 2006-03-13 2011-07-19 Koninklijke Philips Electronics N.V. Control device for controlling the color of light emitted from a light source
US8362838B2 (en) 2007-01-19 2013-01-29 Cirrus Logic, Inc. Multi-stage amplifier with multiple sets of fixed and variable voltage rails
US7852017B1 (en) 2007-03-12 2010-12-14 Cirrus Logic, Inc. Ballast for light emitting diode light sources
US7667408B2 (en) 2007-03-12 2010-02-23 Cirrus Logic, Inc. Lighting system with lighting dimmer output mapping
US8076920B1 (en) 2007-03-12 2011-12-13 Cirrus Logic, Inc. Switching power converter and control system
US8018171B1 (en) 2007-03-12 2011-09-13 Cirrus Logic, Inc. Multi-function duty cycle modifier
US8174204B2 (en) 2007-03-12 2012-05-08 Cirrus Logic, Inc. Lighting system with power factor correction control data determined from a phase modulated signal
US7804256B2 (en) 2007-03-12 2010-09-28 Cirrus Logic, Inc. Power control system for current regulated light sources
US8242711B2 (en) 2007-03-30 2012-08-14 Hold IP Limited Lighting systems
US7888922B2 (en) 2007-05-02 2011-02-15 Cirrus Logic, Inc. Power factor correction controller with switch node feedback
US7696913B2 (en) 2007-05-02 2010-04-13 Cirrus Logic, Inc. Signal processing system using delta-sigma modulation having an internal stabilizer path with direct output-to-integrator connection
US8120341B2 (en) 2007-05-02 2012-02-21 Cirrus Logic, Inc. Switching power converter with switch control pulse width variability at low power demand levels
US7863828B2 (en) 2007-05-02 2011-01-04 Cirrus Logic, Inc. Power supply DC voltage offset detector
US7719246B2 (en) 2007-05-02 2010-05-18 Cirrus Logic, Inc. Power control system using a nonlinear delta-sigma modulator with nonlinear power conversion process modeling
US7894216B2 (en) 2007-05-02 2011-02-22 Cirrus Logic, Inc. Switching power converter with efficient switching control signal period generation
US7969125B2 (en) 2007-05-02 2011-06-28 Cirrus Logic, Inc. Programmable power control system
US7719248B1 (en) 2007-05-02 2010-05-18 Cirrus Logic, Inc. Discontinuous conduction mode (DCM) using sensed current for a switch-mode converter
US8040703B2 (en) 2007-05-02 2011-10-18 Cirrus Logic, Inc. Power factor correction controller with feedback reduction
US8125805B1 (en) 2007-05-02 2012-02-28 Cirrus Logic Inc. Switch-mode converter operating in a hybrid discontinuous conduction mode (DCM)/continuous conduction mode (CCM) that uses double or more pulses in a switching period
US7821237B2 (en) 2007-05-02 2010-10-26 Cirrus Logic, Inc. Power factor correction (PFC) controller and method using a finite state machine to adjust the duty cycle of a PWM control signal
US7746043B2 (en) 2007-05-02 2010-06-29 Cirrus Logic, Inc. Inductor flyback detection using switch gate change characteristic detection
US8816611B2 (en) 2007-05-16 2014-08-26 Koninklijke Philips N.V. Button based color navigation method and device in a lighting or visualization system
WO2008142601A2 (en) 2007-05-16 2008-11-27 Koninklijke Philips Electronics N. V. Button based color navigation method and device in a lighting or visualization system
CN101681231B (zh) * 2007-05-16 2013-01-02 皇家飞利浦电子股份有限公司 照明或显像系统中的基于按钮的颜色导航方法和设备
WO2008142601A3 (en) * 2007-05-16 2009-01-15 Koninkl Philips Electronics Nv Button based color navigation method and device in a lighting or visualization system
US8816588B2 (en) 2007-06-24 2014-08-26 Cirrus Logic, Inc. Hybrid gas discharge lamp-LED lighting system
US8102127B2 (en) 2007-06-24 2012-01-24 Cirrus Logic, Inc. Hybrid gas discharge lamp-LED lighting system
US8587217B2 (en) 2007-08-24 2013-11-19 Cirrus Logic, Inc. Multi-LED control
US7804697B2 (en) 2007-12-11 2010-09-28 Cirrus Logic, Inc. History-independent noise-immune modulated transformer-coupled gate control signaling method and apparatus
US8008898B2 (en) 2008-01-30 2011-08-30 Cirrus Logic, Inc. Switching regulator with boosted auxiliary winding supply
US8576589B2 (en) 2008-01-30 2013-11-05 Cirrus Logic, Inc. Switch state controller with a sense current generated operating voltage
US7755525B2 (en) 2008-01-30 2010-07-13 Cirrus Logic, Inc. Delta sigma modulator with unavailable output values
US8022683B2 (en) 2008-01-30 2011-09-20 Cirrus Logic, Inc. Powering a power supply integrated circuit with sense current
US7759881B1 (en) 2008-03-31 2010-07-20 Cirrus Logic, Inc. LED lighting system with a multiple mode current control dimming strategy
US8008902B2 (en) 2008-06-25 2011-08-30 Cirrus Logic, Inc. Hysteretic buck converter having dynamic thresholds
US8279628B2 (en) 2008-07-25 2012-10-02 Cirrus Logic, Inc. Audible noise suppression in a resonant switching power converter
US8553430B2 (en) 2008-07-25 2013-10-08 Cirrus Logic, Inc. Resonant switching power converter with adaptive dead time control
US8212491B2 (en) 2008-07-25 2012-07-03 Cirrus Logic, Inc. Switching power converter control with triac-based leading edge dimmer compatibility
US8344707B2 (en) 2008-07-25 2013-01-01 Cirrus Logic, Inc. Current sensing in a switching power converter
US8014176B2 (en) 2008-07-25 2011-09-06 Cirrus Logic, Inc. Resonant switching power converter with burst mode transition shaping
US8487546B2 (en) 2008-08-29 2013-07-16 Cirrus Logic, Inc. LED lighting system with accurate current control
US8179110B2 (en) 2008-09-30 2012-05-15 Cirrus Logic Inc. Adjustable constant current source with continuous conduction mode (“CCM”) and discontinuous conduction mode (“DCM”) operation
US8222872B1 (en) 2008-09-30 2012-07-17 Cirrus Logic, Inc. Switching power converter with selectable mode auxiliary power supply
US9124193B2 (en) 2008-10-08 2015-09-01 Holdip Limited Power adaptors
US9888533B2 (en) 2008-10-08 2018-02-06 Holdip Limited Power adaptors
US8288954B2 (en) 2008-12-07 2012-10-16 Cirrus Logic, Inc. Primary-side based control of secondary-side current for a transformer
US8299722B2 (en) 2008-12-12 2012-10-30 Cirrus Logic, Inc. Time division light output sensing and brightness adjustment for different spectra of light emitting diodes
US8362707B2 (en) 2008-12-12 2013-01-29 Cirrus Logic, Inc. Light emitting diode based lighting system with time division ambient light feedback response
US7994863B2 (en) 2008-12-31 2011-08-09 Cirrus Logic, Inc. Electronic system having common mode voltage range enhancement
US8482223B2 (en) 2009-04-30 2013-07-09 Cirrus Logic, Inc. Calibration of lamps
US8198874B2 (en) 2009-06-30 2012-06-12 Cirrus Logic, Inc. Switching power converter with current sensing transformer auxiliary power supply
US8212493B2 (en) 2009-06-30 2012-07-03 Cirrus Logic, Inc. Low energy transfer mode for auxiliary power supply operation in a cascaded switching power converter
US8963535B1 (en) 2009-06-30 2015-02-24 Cirrus Logic, Inc. Switch controlled current sensing using a hall effect sensor
US8248145B2 (en) 2009-06-30 2012-08-21 Cirrus Logic, Inc. Cascode configured switching using at least one low breakdown voltage internal, integrated circuit switch to control at least one high breakdown voltage external switch
US9155174B2 (en) 2009-09-30 2015-10-06 Cirrus Logic, Inc. Phase control dimming compatible lighting systems
US8654483B2 (en) 2009-11-09 2014-02-18 Cirrus Logic, Inc. Power system having voltage-based monitoring for over current protection
US9173261B2 (en) 2010-07-30 2015-10-27 Wesley L. Mokry Secondary-side alternating energy transfer control with inverted reference and LED-derived power supply
US8729811B2 (en) 2010-07-30 2014-05-20 Cirrus Logic, Inc. Dimming multiple lighting devices by alternating energy transfer from a magnetic storage element
US8823289B2 (en) 2011-03-24 2014-09-02 Cirrus Logic, Inc. Color coordination of electronic light sources with dimming and temperature responsiveness
US8912734B2 (en) 2011-03-24 2014-12-16 Cirrus Logic, Inc. Color mixing of electronic light sources with correlation between phase-cut dimmer angle and predetermined black body radiation function
US9204503B1 (en) 2012-07-03 2015-12-01 Philips International, B.V. Systems and methods for dimming multiple lighting devices by alternating transfer from a magnetic storage element
US10790762B2 (en) 2013-05-23 2020-09-29 Adp Corporate Limited Relating to power adaptors
US9736894B2 (en) 2013-12-12 2017-08-15 Verdi Vision Limited Improvements relating to power adaptors
US9736904B2 (en) 2013-12-17 2017-08-15 Ephesus Lighting, Inc. Selectable, zone-based control for high intensity LED illumination system
US9189996B2 (en) 2013-12-17 2015-11-17 Ephesus Lighting, Inc. Selectable, zone-based control for high intensity LED illumination system
US10051709B2 (en) 2013-12-17 2018-08-14 Eaton Intelligent Power Limited Selectable control for high intensity LED illumination system to maintain constant color temperature on a lit surface
WO2017024269A1 (en) * 2015-08-05 2017-02-09 Playhard, Inc. Systems and methods for selection of display mode using a single button lighting module
US9801251B2 (en) 2015-08-05 2017-10-24 Playhard, Inc. Systems and methods for selection of display mode using a single button lighting module
US9730302B2 (en) 2015-12-28 2017-08-08 Ephesus Lighting, Inc. System and method for control of an illumination device
JP2017107865A (ja) * 2017-02-09 2017-06-15 シャープ株式会社 照明装置

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