CN101193474A - Lighting device and its brightness switching device - Google Patents
Lighting device and its brightness switching device Download PDFInfo
- Publication number
- CN101193474A CN101193474A CNA2006101452533A CN200610145253A CN101193474A CN 101193474 A CN101193474 A CN 101193474A CN A2006101452533 A CNA2006101452533 A CN A2006101452533A CN 200610145253 A CN200610145253 A CN 200610145253A CN 101193474 A CN101193474 A CN 101193474A
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- brightness
- light
- switch
- emitting diode
- diverter switch
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- 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]
- H05B45/10—Controlling the intensity of the light
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- 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
- H05B47/175—Controlling the light source by remote control
- H05B47/185—Controlling the light source by remote control via power line carrier transmission
Abstract
The invention discloses a lighting system and a brightness switching unit which is used for controlling the brightness of the multiple illumination status from the LED light source which formed with at least one LED. The brightness switching unit comprises a diverter switch, a detection circuit, a memory unit and a power-switching circuit. The diverter switch is electrically connected to the brightness switching unit and is used for switching the illumination status of the LED light source, and the diverter switch has various switching modes which correspond to the illumination status. The detection circuit is used for detecting the switching modes which correspond to the diverter switch. The memory unit is used for storing the brightness values of the LED light source which correspond to the switching modes detected by the detection circuit, converting the brightness values of the LED light source into brightness control signals and transferring the signals to the detection circuit. The power-switching circuit is used for receiving the brightness control signals from the detection circuit, which causes the LED emitting the brightness corresponding to the illumination status under the switching modes.
Description
Technical field
The present invention relates to a lighting device and brightness switching device thereof, relate in particular to and have mnemon in a kind of and make the brightness switching device that multisection type switches for various lighting devices.
Background technology
Light-emitting diode (Light Emitting Diode; LED) be widely used in recent years in the daily life, such as display, electric household appliance, auto electronic element, and lighting or the like.With the home lighting light fixture is example, traditional home lighting light fixture has many bulbs usually, when user's desire changes the luminance state of environment, many bulbs of the switching of segmentation are in regular turn closed it according to set point can to switch switch by one, for example, when diverter switch was just opened, total bulb was an illuminating state; When after closing diverter switch, opening again, have that at least one bulb is in closed condition and the light luminance that causes lighting integral body to be sent weakens; When opening once again after closing diverter switch, then have the bulb that at least one laststate is illuminating state, can be in closed condition this moment, so can reach the purpose that the lighting multisection type switches brightness.Yet, when replacing with light-emitting diode as if bulb with lighting, the light-emitting diode unit number required owing to bulb is numerous, if comply with the light-emitting diode that above-mentioned mode of operation is closed lighting in regular turn, the light luminance inequality that will cause the integral illumination light fixture to be sent.
Be the problem of the device light luminance inequality that to solve above-mentioned employing light-emitting diode be light source, United States Patent (USP) notification number U.S.6,344, No. 641 disclose a kind of is the control method of the display system of light source with the light-emitting diode, with reference to Fig. 1.Fig. 1 is the schematic diagram of existing display system.As shown in Figure 1, prior art display system 10 includes two light-emitting diode 12A, 12B, a display unit, and a brightness that is disposed at display unit detects control circuit 20.Display unit includes an image array of display 18 to show the image of display unit.In addition, display unit include in addition a controller 22 be electrically connected on brightness detect control circuit 20 with transmission time sequence with control signal to brightness and detect control circuit 20, two photodetectors (photo-detectors) 16A, 16B and be disposed at image array of display 18 with the corresponding side of light-emitting diode 12A, 12B and be electrically connected to brightness respectively and detect control circuit 20 to detect the brightness of light-emitting diode 12A, 12B emitted light respectively.
As photodetector 16A, 16B detects light-emitting diode 12A respectively, behind the light luminance that 12B sent, can convert the light luminance that is measured to current signal and be passed to brightness detection control circuit 20, at this moment, if desire is adjusted light-emitting diode 12A, the luminosity of 12B, 22 of controllers can be exported a modulating signal to brightness according to user's demand and detect control circuit 20, then, brightness detects control circuit 20 and integrates photodetector 16A, the signal that 16B and controller 22 are transmitted, distinguish modulation light-emitting diode 12A and send a voltage signal, the luminosity that 12B institute desire is adjusted, so, can reach the light-emitting diode 12A of display unit, the brilliance control of 12B emitted light.
Yet, though detecting control circuit 20, brightness can control light-emitting diode 12A respectively, the brightness of 12B emitted light, but it only can be with regard to photodetector 16A, 16B detects light-emitting diode 12A, the luminance shortage of 12B or desire are adjusted brightness and are compensated, if user's desire is with light-emitting diode 12A, the brightness of 12B emitted light is adjusted to the brightness of different conditions respectively, make that display unit can be according to light-emitting diode 12A, 12B presents different brightness, then can be because of photodetector 16A, 16B is subjected to contiguous light-emitting diode 12A, the influence of 12B emitted light, also can detect the light that light-emitting diode 12B is sent as photodetector 16A, thereby uncontrollable light-emitting diode 12A, 12B reaches the purpose of the light that sends different brightness, in addition, when display unit is used numerous light-emitting diodes, brightness detects control circuit 20 also can't be with the light of different brightness that light-emitting diode sends under a certain particular state, is controlled to this particular state once again and can not causes the problem of brightness disproportionation.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of lighting device and brightness switching device thereof, in order to switch the brightness of a plurality of luminances that led light source sends that at least one light-emitting diode (LED) formed, to solve the problem of luminance nonuniformity in the prior art.
For achieving the above object, the invention provides a kind of brightness switching device and include a switching switch, be electrically connected on brightness switching device, in order to switch the luminance of light-emitting diode, wherein diverter switch has and the pairing a plurality of switch modes of luminance; One testing circuit is electrically connected with diverter switch, in order to detect the switch mode of diverter switch; One mnemon is electrically connected with testing circuit, in order to the brightness value of the pairing light-emitting diode of switch mode that stores diverter switch that testing circuit detects, and the brightness value of light-emitting diode is converted to brightness control signal is sent to testing circuit; And a power-switching circuit, be electrically connected with led light source, in order to the brightness control signal that receiving test circuit transmitted, so that light-emitting diode sends the brightness of the luminance under the corresponding switch mode.
Again, the present invention provides a kind of lighting device in addition, and it includes a led light source, and it is made up of at least one light-emitting diode (LED), and led light source has a plurality of luminances; One switches switch, and in order to switch the luminance of led light source, diverter switch has and the pairing a plurality of switch modes of luminance; One testing circuit is electrically connected with diverter switch, in order to detect the switch mode of diverter switch; One mnemon, be electrically connected with testing circuit, in order to the brightness value of the light-emitting diode of the pairing led light source of switch mode that stores diverter switch that testing circuit detects, and the brightness value of light-emitting diode is converted to brightness control signal is sent to testing circuit; And a power-switching circuit, be electrically connected with led light source, in order to the brightness control signal that receiving test circuit transmitted, so that light-emitting diode sends the brightness of the luminance under the corresponding switch mode.
Have a mnemon in lighting device of the present invention and the brightness switching device thereof, can store each light-emitting diode in following brightness value that should emit beam of each set condition, so after each diverter switch is switched, all can make light-emitting diode present the brightness value that should emit beam, and can the uneven phenomenon of light not arranged because of the influence of contiguous light-emitting diode emitted light, the brightness that so can provide led light source to make multisection type is switched.
Above about content of the present invention explanation and the explanation of following execution mode in order to demonstration with explain principle of the present invention, and provide claim of the present invention further to explain.
Relevant characteristics and implementation of the present invention cooperate diagram to be described in detail as follows as most preferred embodiment now.
Description of drawings
The schematic diagram of the existing display system of Fig. 1;
Fig. 2 A is the functional block diagram of lighting device of the present invention and brightness switching device thereof;
Fig. 2 B is the mnemocircuit figure of testing circuit among Fig. 2 A; And
Fig. 3 shows led light source of the present invention, and another implements the schematic diagram of sample attitude.
Wherein, Reference numeral:
10: display system 12A, 12B, 120: light-emitting diode
16A, 16B: photodetector 18: image array of display
20: brightness detects control circuit 22: controller
60: testing circuit 62: amplifier
64: A/D conversion circuit 70: mnemon
90: power-switching circuit 100: brightness switching device
102: signal feed side 110:LED light source
114: brightness control signal 130: diverter switch
140: DC power supply 150: external power source
Embodiment
With reference to Fig. 2 A.Fig. 2 A is the functional block diagram of lighting device of the present invention and brightness switching device thereof.Shown in Fig. 2 A, lighting device of the present invention includes a led light source 110 and a brightness switching device 100.Led light source is by at least one light-emitting diode (Light Emitting Diode; LED) 120 compositions, and brightness switching device 100 is in order to switch the brightness of each light-emitting diode 120 a plurality of luminance of sending in the led light source 110.Brightness switching device 100 includes one and switches switch 130, a testing circuit 60, a mnemon 70 and a power-switching circuit 90.In addition, the light-emitting diode 120 of led light source 110 can be series, parallel or connection in series-parallel and arranges and form special pattern arrangement.
In present embodiment, power-switching circuit 90 is an AC/DC converting circuit (AC/DCConverter), it is electrically connected between testing circuit 60 and the led light source 110, be sent to led light source 110 in order to the brightness control signal that testing circuit 60 is transmitted, and the alternating current of external power source 150 input light-source brightness switching device shifters 100 is converted to can be for light-source brightness switching device shifter 100 and 110 DC power supply that can receive and use of led light source.In addition, power-switching circuit 90 of the present invention also can be one direct current/DC converting circuit (DC/DC Converter), and the external power source 150 of this moment is a direct current power supply, uses so that light-source brightness switching device shifter 100 and led light source 110 to be provided.
With reference to Fig. 2 B.Fig. 2 B is the mnemocircuit figure of testing circuit 60 among Fig. 2 A.Shown in Fig. 2 B, testing circuit 60 of the present invention includes an amplifier 62 and an analog/digital (Analog/Digital) change-over circuit 64.The positive input of amplifier 62 be a current signal for example, and the reverse input end of amplifier 62 is electrically connected on diverter switch 120 in order to receive the luminance signal of each light-emitting diode 120 in the led light source 110.A/D conversion circuit 64 is electrically connected on amplifier 62 and mnemon 70, after being converted to digital controlled signal in order to the analog control signal that amplifier 62 and mnemon 70 are transmitted, be sent to power-switching circuit 90, be converted to brightness control signal via power-switching circuit 90 again, with the brightness of each light-emitting diode 120 emitted light in the control led light source 110.
Can adjust the brightness value that each light-emitting diode 120 is desired to emit beam in the led light source 110 exactly by light-source brightness switching device shifter 100 of the present invention, its operation principles is as described below.Please more in the lump with reference to Fig. 2 A and Fig. 2 B.Shown in Fig. 2 A and Fig. 2 B, when not start of diverter switch 130 (Off), brightness switching device 100 can detect the brightness of each light-emitting diode 120 emitted light in the led light source 110 and input to the positive input of testing circuit 60 with a luminance signal 112 from a signal feed side 102 of brightness switching device 100, luminance signal 112 can be a current signal, it is loaded with the brightness value of each light-emitting diode 120 emitted light in the led light source 110, after the amplifier 62 of circuit 60 amplifies luminance signal 112 after testing, be converted to digital signal and be passed to mnemon 70 through A/D conversion circuit 64 again, at this moment, mnemon 70 can store the luminance state of each light-emitting diode 120 emitted light; When diverter switch 130 is opened, many light-emitting diodes 120 in the led light source 110 can present identical or different luminance state (supposing that each light-emitting diode 120 is that the complete bright state and the brightness that emits beam all equate) according to an original start state, and store the brightness value of each light-emitting diode 120 emitted light through mnemon, mnemon 70 is sent to A/D conversion circuit 64 after stored light-emitting diode 120 luminance states can being converted to analog signal via a translation interface (figure does not show), that transmits the brightness value desire to reach each light-emitting diode 120 emitted light of above-mentioned original start state again controls signal to power-switching circuit 90, control signal is converted to 110 brightness control signals 114 that can receive of led light source, so that each light-emitting diode 120 presents predetermined light luminance value.Above-mentioned brightness control signal 114 can be a pulse wave width modulation (Pulse Width Modulation; PWM) signal, a voltage control signal, or be a current controling signal.
When after diverter switch 130 is closed earlier, opening once again, at this moment, brightness switching device 100 can according to this original start state control each light-emitting diode 120 the brightness value that should emit beam, for example, the light luminance that have at least one light-emitting diode 120 this moment can weaken, and the picture that integral LED light source 110 is presented can present different visual effects because of the light-emitting diode 120 that changes brightness, because mnemon 70 of the present invention can store each diverter switch 130 desires to present light-emitting diode 120 according to original start after opening different brightness values, so in the may command led light source 110 each light-emitting diode 120 the brightness value that should present, and can the uneven phenomenon of light not arranged because of the influence of contiguous light-emitting diode 120 emitted lights.
With reference to Fig. 3.Fig. 3 shows the schematic diagram of led light source 110 another enforcement sample attitudes of the present invention.As shown in Figure 3, in this embodiment, led light source 110 outsides are connected to a direct current power supply 140 in addition with direct power supply as light-emitting diode 120, and all the other are partly all identical with the above embodiments, so repeat no more.
What the spy gave explanation is, brightness switching device 100 of the present invention not only can be applicable to general LED display unit, it also can be applicable to show decorative lamp and changeable colour formula lighting or the like as multisection type lighting, changeable colour, only needs the light-emitting diode assembling collocation of led light source with different color light (R, G and B) got final product.
Compared to prior art, have a mnemon in lighting device of the present invention and the brightness switching device 100 thereof, can store each light-emitting diode following brightness value that should emit beam of each default switch mode in diverter switch 130, so after each diverter switch is switched, all can make light-emitting diode present the brightness value that institute should emit beam, and can the uneven phenomenon of light not arranged because of the influence that is close to light-emitting diode 120 emitted lights.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; being familiar with those of ordinary skill in the art ought can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (32)
1. a lighting device is characterized in that, includes:
One LED source, it is made up of at least one light-emitting diode, and this LED source has a plurality of luminances;
One switches switch, and in order to switch this luminance of this LED source, this diverter switch has and the pairing a plurality of switch modes of this luminance;
One testing circuit is electrically connected with this diverter switch, in order to detect this switch mode of this diverter switch;
One mnemon, be electrically connected with this testing circuit, in order to the brightness value of this light-emitting diode of pairing this LED source of this switch mode that stores this diverter switch that this testing circuit detects, and the brightness value of this light-emitting diode is converted to brightness control signal is sent to this testing circuit; And
One power-switching circuit is electrically connected with this LED source, in order to receive this brightness control signal that this testing circuit transmits, so that this light-emitting diode sends the brightness of the luminance under the corresponding switch mode.
2. lighting device according to claim 1 is characterized in that, this diverter switch is under different switch mode, and this LED source has the brightness meeting difference of a light-emitting diode emitted light at least.
3. lighting device according to claim 1 is characterized in that other includes an external power source, can use so that this lighting device to be provided by the switching of this diverter switch.
4. lighting device according to claim 1 is characterized in that, other includes a direct current power supply, is electrically connected on this LED source, uses for this LED source.
5. according to claim 1 a described lighting device, it is characterized in that, this testing circuit includes: an amplifier, it has a positive input, in order to receiving this luminance of this LED source, and a reverse input end is electrically connected on this diverter switch to receive this switch mode of this diverter switch; And
One A/D conversion circuit is electrically connected on this amplifier and this mnemon, is converted to digital signal in order to the analog control signal that this amplifier and this mnemon are transmitted.
6. lighting device according to claim 2 is characterized in that, this diverter switch can be passed through an outer triggering signal, to carry out this switch mode of this LED source.
7. lighting device according to claim 6 is characterized in that, this outer triggering signal is one to push signal continuously, and the brightness value of this light-emitting diode of this LED source was directly proportional or inverse ratio with the time of pushing this diverter switch.
8. lighting device according to claim 6, it is characterized in that, this outer triggering signal is a multisection type switching signal, and multisection type increases progressively the brightness value of this light-emitting diode of this LED source or multisection type successively decreases along with the number of times that switches this diverter switch is.
9. lighting device according to claim 6, it is characterized in that, this outer triggering signal is that a multisection type is pushed signal, have a Preset Time between each switch mode at interval, multisection type increases progressively the brightness value of this light-emitting diode of this LED source or multisection type successively decreases along with the time of pushing this diverter switch is.
10. lighting device according to claim 6 is characterized in that this lighting device includes a signal input part in addition, in order to receive this outer triggering signal.
11. lighting device according to claim 1 is characterized in that, this diverter switch is a programmable circuit.
12. lighting device according to claim 1 is characterized in that, this power-switching circuit is an AC/DC converting circuit.
13. lighting device according to claim 1 is characterized in that, this power-switching circuit is one direct current/DC converting circuit.
14. lighting device according to claim 1 is characterized in that, the brightness control signal that this power-switching circuit is exported is the pulse wave width modulation signal.
15. lighting device according to claim 1 is characterized in that, the brightness control signal that this power-switching circuit is exported is a voltage signal.
16. lighting device according to claim 1 is characterized in that, the brightness control signal that this power-switching circuit is exported is a current signal.
17. a brightness switching device in order to switch the brightness of a plurality of luminances that LED source is sent that at least one light-emitting diode forms, is characterized in that this brightness switching device includes:
One switches switch, is electrically connected on this brightness switching device, and in order to switch this luminance of this light-emitting diode, wherein this diverter switch has and the pairing a plurality of switch modes of this luminance;
One testing circuit is electrically connected with this diverter switch, in order to detect this switch mode of this diverter switch; One mnemon, be electrically connected with this testing circuit, in order to the brightness value of pairing this light-emitting diode of this switch mode that stores this diverter switch that this testing circuit detects, and the brightness value of this light-emitting diode is converted to brightness control signal is sent to this testing circuit; And
One power-switching circuit is electrically connected with this LED source, in order to receive this brightness control signal that this testing circuit transmits, so that this light-emitting diode sends the brightness of the luminance under the corresponding switch mode.
18. brightness switching device according to claim 17 is characterized in that, this diverter switch is under different switch mode, and this LED source has the brightness meeting difference of a light-emitting diode emitted light at least.
19. brightness switching device according to claim 17 is characterized in that, other includes an external power source, can use so that this brightness switching device to be provided by the switching of this diverter switch.
20. brightness switching device according to claim 17 is characterized in that, other includes a direct current power supply, is electrically connected on this LED source, uses for this LED source.
21. brightness switching device according to claim 17 is characterized in that, this testing circuit includes:
One amplifier, it has a positive input, and in order to receiving this luminance of this LED source, and a reverse input end is electrically connected on this diverter switch to receive this switch mode of this diverter switch; And
One A/D conversion circuit is electrically connected on this amplifier and this mnemon, is converted to digital signal in order to the analog control signal that this amplifier and this mnemon are transmitted.
22. brightness switching device according to claim 18 is characterized in that, this diverter switch can be passed through an outer triggering signal, to carry out this switch mode of this LED source.
23. brightness switching device according to claim 22 is characterized in that, this outer triggering signal is one to push signal continuously, and the brightness value of this light-emitting diode of this LED source was directly proportional or inverse ratio with the time of pushing this diverter switch.
24. brightness switching device according to claim 22, it is characterized in that, this outer triggering signal is a multisection type switching signal, and the brightness value of this light-emitting diode of this LED source becomes multisection type to increase progressively along with the number of times that switches this diverter switch or multisection type successively decreases.
25. brightness switching device according to claim 22, it is characterized in that, this outer triggering signal is that a multisection type is pushed signal, have a Preset Time between each switch mode at interval, multisection type increases progressively the brightness value of this light-emitting diode of this LED source or multisection type successively decreases along with the time of pushing this diverter switch is.
26. brightness switching device according to claim 22 is characterized in that, this brightness switching device includes a signal input part in addition, in order to receive this outer triggering signal.
27. brightness switching device according to claim 17 is characterized in that, this diverter switch is a programmable circuit.
28. brightness switching device according to claim 17 is characterized in that, this power-switching circuit is an AC/DC converting circuit.
29. brightness switching device according to claim 17 is characterized in that, this power-switching circuit is one direct current/DC converting circuit.
30. brightness switching device according to claim 17 is characterized in that, the brightness control signal that this power-switching circuit is exported is the pulse wave width modulation signal.
31. brightness switching device according to claim 17 is characterized in that, the brightness control signal that this power-switching circuit is exported is a voltage signal.
32. brightness switching device according to claim 17 is characterized in that, the brightness control signal that this power-switching circuit is exported is a current signal.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101452533A CN100521839C (en) | 2006-11-24 | 2006-11-24 | Lighting device and its brightness switching device |
| EP10197073A EP2299778B1 (en) | 2006-11-24 | 2007-01-12 | Illuminating device and luminance switching device thereof |
| AT07100454T ATE493866T1 (en) | 2006-11-24 | 2007-01-12 | LIGHTING DEVICE AND DEVICE FOR BRIGHTNESS CONTROL THEREOF |
| DE602007011557T DE602007011557D1 (en) | 2006-11-24 | 2007-01-12 | Lighting device and device for brightness control therefor |
| ES07100454T ES2355987T3 (en) | 2006-11-24 | 2007-01-12 | LIGHTING DEVICE AND LIGHTING CHANGE DEVICE FOR THE SAME. |
| ES10197073T ES2389087T3 (en) | 2006-11-24 | 2007-01-12 | Lighting device and luminance change device for it |
| EP07100454A EP1926350B1 (en) | 2006-11-24 | 2007-01-12 | Illuminating device and luminance switching thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101452533A CN100521839C (en) | 2006-11-24 | 2006-11-24 | Lighting device and its brightness switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101193474A true CN101193474A (en) | 2008-06-04 |
| CN100521839C CN100521839C (en) | 2009-07-29 |
Family
ID=38977033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101452533A Active CN100521839C (en) | 2006-11-24 | 2006-11-24 | Lighting device and its brightness switching device |
Country Status (5)
| Country | Link |
|---|---|
| EP (2) | EP1926350B1 (en) |
| CN (1) | CN100521839C (en) |
| AT (1) | ATE493866T1 (en) |
| DE (1) | DE602007011557D1 (en) |
| ES (2) | ES2389087T3 (en) |
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| CN101620371B (en) * | 2008-07-02 | 2011-03-30 | 比亚迪股份有限公司 | Camera testing device |
| CN102014539A (en) * | 2009-09-08 | 2011-04-13 | 群康科技(深圳)有限公司 | Backlight control circuit |
| CN102137532A (en) * | 2010-01-21 | 2011-07-27 | 顺鹏科技股份有限公司 | Light emitting diode (LED) driving and control device and control method thereof |
| CN103052241A (en) * | 2010-05-20 | 2013-04-17 | 冯林 | Dimming driving device |
| CN103202100A (en) * | 2010-06-25 | 2013-07-10 | 株式会社普兰尼特 | Apparatus for automatically controlling the illumination of led lighting |
| CN103260310A (en) * | 2013-05-14 | 2013-08-21 | 辉芒微电子（深圳）有限公司 | LED light-dimmer driving circuit |
| CN103262399A (en) * | 2010-11-04 | 2013-08-21 | 塞瑞斯逻辑公司 | Controlled power dissipation in a switch path in a lighting system |
| CN103563488A (en) * | 2011-04-14 | 2014-02-05 | 岭南大学校产学协力团 | Controller of an AC-DC converter for led lighting |
| CN104421777A (en) * | 2013-09-02 | 2015-03-18 | 海洋王（东莞）照明科技有限公司 | Lamp dimming device and lighting lamp |
| US9184666B2 (en) | 2012-07-25 | 2015-11-10 | Cirrus Logic, Inc. | Active thermal protection for switches |
| US9491845B2 (en) | 2010-11-04 | 2016-11-08 | Koninklijke Philips N.V. | Controlled power dissipation in a link path in a lighting system |
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| DE112010003975A5 (en) * | 2009-10-07 | 2013-01-03 | Tridonic Gmbh & Co Kg | Method for controlling lamp operating devices |
| CN102264175A (en) * | 2010-05-26 | 2011-11-30 | 马士科技有限公司 | Light emitting diode lamp dimming device capable of realizing stepped dimming |
| CN103068123A (en) * | 2012-12-25 | 2013-04-24 | 生迪光电科技股份有限公司 | Light emitting diode (LED) lamp with illumination intensity adjustable |
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| US6344641B1 (en) | 1999-08-11 | 2002-02-05 | Agilent Technologies, Inc. | System and method for on-chip calibration of illumination sources for an integrated circuit display |
| US6608614B1 (en) * | 2000-06-22 | 2003-08-19 | Rockwell Collins, Inc. | Led-based LCD backlight with extended color space |
| FR2854252B1 (en) * | 2003-04-25 | 2005-08-05 | Thales Sa | COLORIMETRIC PHOTO PARAMETERS ASSEMBLY DEVICE FOR COLOR LED LUMINATED BOX |
| DE102004045515A1 (en) * | 2004-09-20 | 2006-03-30 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Illumination system with at least two light sources and method for operating such a lighting system |
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2006
- 2006-11-24 CN CNB2006101452533A patent/CN100521839C/en active Active
-
2007
- 2007-01-12 EP EP07100454A patent/EP1926350B1/en active Active
- 2007-01-12 DE DE602007011557T patent/DE602007011557D1/en active Active
- 2007-01-12 ES ES10197073T patent/ES2389087T3/en active Active
- 2007-01-12 AT AT07100454T patent/ATE493866T1/en active
- 2007-01-12 ES ES07100454T patent/ES2355987T3/en active Active
- 2007-01-12 EP EP10197073A patent/EP2299778B1/en active Active
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620371B (en) * | 2008-07-02 | 2011-03-30 | 比亚迪股份有限公司 | Camera testing device |
| CN102014539B (en) * | 2009-09-08 | 2013-08-21 | 群康科技(深圳)有限公司 | Backlight control circuit |
| CN102014539A (en) * | 2009-09-08 | 2011-04-13 | 群康科技(深圳)有限公司 | Backlight control circuit |
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Also Published As
| Publication number | Publication date |
|---|---|
| ES2389087T3 (en) | 2012-10-23 |
| ATE493866T1 (en) | 2011-01-15 |
| DE602007011557D1 (en) | 2011-02-10 |
| EP2299778B1 (en) | 2012-06-27 |
| EP2299778A1 (en) | 2011-03-23 |
| ES2355987T3 (en) | 2011-04-01 |
| EP1926350B1 (en) | 2010-12-29 |
| CN100521839C (en) | 2009-07-29 |
| EP1926350A1 (en) | 2008-05-28 |
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