CN202077216U - System and its control device used for reprogramming power parameter of light emitting diode - Google Patents
System and its control device used for reprogramming power parameter of light emitting diode Download PDFInfo
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- CN202077216U CN202077216U CN2010206266398U CN201020626639U CN202077216U CN 202077216 U CN202077216 U CN 202077216U CN 2010206266398 U CN2010206266398 U CN 2010206266398U CN 201020626639 U CN201020626639 U CN 201020626639U CN 202077216 U CN202077216 U CN 202077216U
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Abstract
The utility model provides a system used for reprogramming the power parameter of a light emitting diode, including a plurality of light emitting diode light emitting diode LED modules, a reprogrammable total wire which can be operated to supply power to the LED modules, and a microcontroller unit which can be operated to modify the voltage of the reprogrammable total wire. According to one enforcement of the utility model, a plurality of light emitting diode (LED) modules are connected in series and monitored. When an LED module is determined to be failure or improper operated after the detection, a bypass switch removes the specific LED module from the series connection, and modifies the voltage provided to the series circuit. When an LED module is determined to have too high temperature after the diction, the current provided to the LED module is restricted.
Description
Technical field
The utility model mainly relates to the system with light-emitting diode, and relates more specifically to be used for system that the power parameter of light-emitting diode is programmed again.
Background technology
Conventional light-emitting diode (LED) module can be provided in DC/DC step-down in parallel (buck) circuit design.In such design, voltage bus Vbus has fixed voltage and fixed current.A plurality of DC/DC transducers are coupled in parallel to fixedly Vbus, thus the fixing specific voltage that needs of the led module that become to connect of Vbus voltage transitions respectively.Conventional reduction voltage circuit like this designs that not only the cost height must be nobody shows any interest in but also efficient is also low.
Therefore need a kind of improved LED system in the art.
Summary of the invention
According to an embodiment of present disclosure, monitor a plurality of light-emitting diodes (LED) module of series connection.When led module was detected as inefficacy or inappropriate operation, by-pass switch was removed specific led module and the voltage that provides to series connection is provided from series connection.When led module is detected as when having excessive temperature, the electric current that restriction provides to led module.
According to an aspect of the present disclosure, a kind of system that the power parameter of light-emitting diode is programmed again of being used for is provided, comprising: a plurality of LED modules; The bus of Reprogrammable can be operated in order to provide power to described led module; And micro controller unit, can operate voltage in order to the bus of revising described Reprogrammable.
According to an execution mode of the present disclosure, when being detected as inefficacy or inappropriate operation, revises described micro controller unit at least one led module in described a plurality of led modules the voltage of the bus of described Reprogrammable.
According to an execution mode of the present disclosure, at least some led modules in described a plurality of led modules are electric coupling mutually selectively, and the bus of described Reprogrammable is electrically coupled at least some led modules in described a plurality of led module selectively.
According to an execution mode of the present disclosure, at least some led modules in described a plurality of led module comprise corresponding by-pass switch, described by-pass switch can operate in order to the bus that selectively led module is electrically coupled to described Reprogrammable or with the bus uncoupling of described Reprogrammable.
According to an execution mode of the present disclosure, described micro controller unit also can be operated in order to engage described by-pass switch.
According to an execution mode of the present disclosure, described micro controller unit is revised the voltage of the bus of described Reprogrammable according to the number of the by-pass switch that has engaged.
According to an execution mode of the present disclosure, described micro controller unit also can be operated in order to revise the electric current to described a plurality of led module supplies.
According to an execution mode of the present disclosure, described micro controller unit is revised described electric current according to the temperature of described led module.
According to another aspect of the present disclosure, a kind of control device that is used for system that the power parameter of light-emitting diode is programmed again is provided, comprising: detection module is used for the operation of a plurality of LED modules of testing circuit; And modified module, be used for revising the voltage that provides to described a plurality of led modules or electric current at least one in response to the operation of detected described led module.
According to an execution mode of the present disclosure, described detection module detects at least one in the inappropriate operation of the inefficacy of temperature, each described led module of described led module or each described led module when the operation that detects described a plurality of led modules, described circuit comprises at least one switch, described control device also comprises: splice module, be used in the temperature that detects described LED more than the predefine threshold value, when detecting the inefficacy of led module or detecting the inappropriate operation of led module, engaging described at least one switch.
According to an execution mode of the present disclosure, described detection module detects the temperature of described led module when detecting the operation of described a plurality of led modules, and described modified module is provided according to the temperature of described led module by the electric current that provides to described a plurality of led modules.
According to an execution mode of the present disclosure, described detection module detects the inefficacy of each described led module or the inappropriate operation of each described led module when detecting the operation of described a plurality of led modules, and described modified module is revised the voltage that provides to described a plurality of led modules according to the inefficacy or the inappropriate operation of at least one led module in detected described a plurality of led modules.
According to an execution mode of the present disclosure, described led module arranged in series, and described control device also comprises: the uncoupling module, be used for when the inefficacy of at least one led module that detects described led module or inappropriate operation, selectively described at least one led module in the described led module of electric uncoupling from described series connection.
According to an execution mode of the present disclosure, described modified module is provided according to the number of the led module in the described series connection by the voltage that provides to described a plurality of led modules.
Describe hereinafter before the embodiment, it may be favourable setting forth some word that patent document uses and the definition of phrase in the whole text: term " comprises " and " comprising " and variant thereof mean unrestricted comprising; Term " perhaps " is for comprising meaning, thus mean and/or; Phrase " with ... association " and " related with it " and variant thereof can mean and comprise, be included in ... interior, with ... interconnect, comprise, be included in ... interior, be connected to or with ... connect, be coupled to or with ... coupling, can with ... communication, with ... cooperate, interweave and put, be adjacent to, be limited to or with ... be held together, have, have ... character etc.; And term " controller " means any equipment, system or its part of controlling at least one operation, and such equipment can make up with some of hardware, firmware or software or in them two implement at least.It should be noted that the function related with any specific controller can this locality or remote centralized or dispersion.Patent document is provided for the definition of some word and phrase in the whole text, even it is not in most of examples that those skilled in the art are to be understood that, also be in many examples, such definition goes for the previous and use in the future of the word and the phrase of definition like this.
Description of drawings
In order more completely to understand present disclosure and advantage thereof, in conjunction with the accompanying drawings with reference to hereinafter describing, similar label is represented similar part in these accompanying drawings now:
Fig. 1 is the simplified electrical circuit diagram according to the light-emitting diode of an embodiment of present disclosure (LED) system;
Fig. 2 is the circuit diagram more specifically according to the light-emitting diode of an embodiment of present disclosure (LED) system;
Fig. 3 shows the more details of the programmable power unit scheme of Fig. 2; And
Fig. 4 A and Fig. 4 B show according to the example of the LED system of the embodiment of disclosure integrated.
Fig. 5 shows the schematic diagram according to the control device that is used for the LED system of the embodiment of disclosure.
Embodiment
Being used in the patent document described Fig. 1 to Fig. 4 B that hereinafter discusses of present disclosure principle and various embodiment only for not being interpreted as the restriction scope of the disclosure by any way for example.It will be appreciated by those skilled in the art that the principle that in the system of any suitable layout, to implement present disclosure.
At a difficult problem of describing in the background technology, some embodiment of present disclosure instructs the Vbus that uses variable and Reprogrammable.In certain embodiments, a plurality of led modules can be connected in series to the Vbus of Reprogrammable.In addition, in certain embodiments, led module can have the bypass feature (feature) that allows bypass inefficacy led module.In addition, in certain embodiments, can revise Vbus according to the led module of current online not bypass.
Fig. 1 is the simplified electrical circuit diagram according to the light-emitting diode of an embodiment of present disclosure (LED) system 100.The LED system 100 of Fig. 1 comprises micro controller unit (MCU) 110, programmable voltage limit feature 120, programmable electric current limited features 130, a plurality of led module 140 (for example 140a, 140B, 140n) and AC/DC transducer 150.
AC/DC transducer 150 mainly exchanges input as 110V/220V from importing 102 and 103 receptions, and direct current output is provided, and this direct current output is expressed as V in Fig. 2
BUS160.As mentioned below, according to the operation of LED system 100 to V
BUS160 electric current and voltage are made amendment or programming again.As two unrestricted examples, revise V according to the number of the led module 140 in using
BUS160 voltage (for example uses programmable voltage limit feature 120 to produce the V of modification
BUS162).In addition, can revise the electric current that provides to led module 140 according to the temperature of led module 140 by using programmable electric current limited features 130.More details separately hereinafter will be described.
Show a plurality of led modules 140 (being expressed as 140a, 140b, 140n respectively) that are connected in series mutually.Though only three led modules 140 have been shown in this embodiment, other embodiment can have more or led module still less.In addition, though the customized configuration of led module has been shown in this embodiment, other embodiment can comprise other led module design.
MCU 110 can also use programmable electric current limited features 130 to revise the electric current of supplying to led module.As an example, in a particular embodiment, the temperature that MCU 110 can sense one or more led module 140 has risen to undesirable level.Thereby, the electric current that MCU 110 can use programmable electric current limited features 130 to provide to led module 140a, 140b and 140n with restriction.The additional detail of programmable electric current limited features 130 is hereinafter described with reference to Fig. 2 and Fig. 3.
Fig. 2 is the circuit diagram more specifically according to the light-emitting diode of an embodiment of present disclosure (LED) system 200.Though show the customized configuration of LED system 200, can utilize other configuration, these other configurations comprise have more, still less or the LED system of different parts.
Show MCU 210 with various modules.In one embodiment, MCU 210 can be the MCU that the application's assignee sells under one's name in MCU " STM32 " series.MCU 210 can comprise CPU, memory and logic.The combination that this logic can be used as software, hardware or software and hardware is embedded into.The logic that embeds can be operated in order to carry out process described herein.MCU 210 can also have the multiple communication interface (numeral and simulation etc.) that is used for other components communicate.
The MCU 210 of this embodiment comprises port module 212, CTR and PD module 214, temperature sensor module 216, Pwr CTR module 218, two analog to digital converter/pulse width modulator modules (DAC1/PWM 217a, DAC2/PWM 217n), three analog to digital converters (ADC0 219a, ADC1 219b and ADC2 219c), infrared module (IrDA213) and real-time clocks (RTN 215).Though the specific features of MCU 210 has been shown in this embodiment, that other MCU can comprise is more, still less or different parts.
MCU 210 operates as controller.The main purpose of MCU 210 is to guarantee the proper handling of led module 240 (being expressed as MD1, MD2, MD3, MD4, MDn respectively).Particularly, as hereinafter more specifically as described in, MCU 210 in the specific embodiment not only controls the voltage and current to led module 240 supply, and can specific led module 240 lost efficacy or during inappropriate operation selectively joint pin to the by-pass switch of such led module.
Though do not specifically illustrate, the MCU 210 in the specific embodiment can detect the inefficacy or the inappropriate operation of each specific led module 240.In a particular embodiment, MCU210 directly handles such detection.In other embodiments, another module (not shown) can be handled this detection and to MCU 210 transmission information.When detecting inefficacy or inappropriate operation, MCU 210 can use CTR and PD module 214 to send signal by respective communication path CTR1, CTR2, CTR3, one of CTR4, CTR5...CTRn, with engage by-pass switch S1, S2, S3, S4, S5 ... Sn, thus allow the specific led module 240 of bypass.In a particular embodiment, CTR and PD module 214 also can be when MCU 210 have detected specific led module 240 and operated once more, engage again specific by-pass switch S1, S2, S3, S4, S5 ... Sn.
In order to change the voltage to led module 240 supplies, MCU 210 can use port module 212.Particularly, port module 212 can closed be connected to switch SW 1, SW2, SW32, SW64, the SW128 of one or more resistor register, described one or more resistor register in Fig. 2, be labeled as respectively " 1 ", " 2 " ... " 32 ", " 64 " and " 128 ".The number of closed resistor register 225 and concrete resistor register can depend on the number and the concrete led module of the specific led module 240 of bypass.In certain embodiments, led module 240 can be not all identical and can has variable requirement.In other embodiments, some or all led modules 240 can be identical.As described in reference Fig. 3, the joint of the closure of switch SW 1, SW2, SW32, SW64, SW128 and particular resistor register will be revised Vref value 237.In response to the Vref value 237 of this variation, with the magnitude of voltage of revising to the led module supply 262.Magnitude of voltage 262 to the led module supply is illustrated by the following formula of describing with reference to Fig. 3: V=Vbase+ (255-n) * Δ V.
In the embodiment of Fig. 2, use DAC1/PWM module 217a and/or DAC2/PWM module 217b to revise the electric current of supplying to led module.Particularly, DAC1/PWM module 217a and/or DAC2/PWM module 217b can provide the value of setting of required electric current and/or voltage, are expressed as DAC1 and DAC2 respectively.The value (DAC1 and DAC2) of DAC1/PWM module 217a and/or DAC2/PWM module 217b is provided for two comparators 292,294 in this embodiment.
The actual value of LED system 200 is measured in use in the input (described input is expressed as ADC0 and ADC1 respectively) of ADC0 module 219a and ADC1 module 219b reception.The value (being expressed as ADC0) of ADC0 module 219a is from the input in comparator 292 and the circuit between two resistor R 1 and R2.The value (being expressed as ADC1) that is used for ADC1 module 219b can be from another comparator 294.In a particular embodiment, compare the value of ADC0 and the value of DAC2, and compare the value of ADC1 and the value of DAC1.When detecting difference, can make amendment to revise electric current to LED system 200.For example, can disconnect or closed one or two switch mosfets (Q1 and Q2).In a particular embodiment, the ADC0 value can be measured Vbus voltage, and the ADC1 value can be represented demand limiter.
As first non-limitative example, can compare ADC0 magnitude of voltage and DAC2 magnitude of voltage.If the magnitude of voltage of ADC0 greater than the magnitude of voltage of DAC2, then can turn-off Q1.As another non-limitative example, can compare DAC1 magnitude of voltage and ADC1 magnitude of voltage.If the ADC1 magnitude of voltage is higher than the DAC1 magnitude of voltage, then can turn-offs Q1 and can limit electric current.
Temperature sensor module 216 can be measured in the temperature of each corresponding led module 240 or as the temperature of the set of led module 240.As an example, can pass on the temperature of the radiator on the corresponding led module 240 with each or the temperature of total radiator of being communicated with one or more led module 240 to temperature sensor module 216.When detecting one or more led module 240 and reach undesirable value, can use the value of above-mentioned DAC1/DAC2 and ADC0/ADC2 to revise electric current to led module 240 supplies.
Except above-mentioned control, LED system 200 also can have the interruption controls feature, this feature in can monitoring circuit condition and one or two in the current value that separates with the DAC1/DAC2 value of above quoting or the magnitude of voltage changed.
MCU 210 left sides in Fig. 2 show programmable power cell 290.Programmable power cell 290 exchanges input as 110V/220V from importing 202 and 203 receptions, and provides according to the Vref input 237 direct current output valves 262 that change that receive.As non-limitative example, direct current output can change between 50-350V and 60-400W.In other embodiments, these analog values can be higher or lower.Also show the collection utmost point (collector) common voltage VCC 292.The specific formulation that is used for direct current output is more specifically described with reference to Fig. 3.
In a particular embodiment, LED system 200 can comprise various further features, and these features comprise: low pressure reduction (dropout) adjuster 302 (DC/DC LDO); Trackpad 304 and remote controller 306, it provides input for example to specify the light modulation of led module 240 to IrDA module 213 and/or ADC2 219c; Battery 308; PZT (piezoelectric transducer) 203; And operator scheme is provided with device 310, and its some operation for LED system 200 provides parameter.
In addition, interrupt line 320 can provide feedback to be used to revise electric current and/or the voltage that applies to system 200 to MCU 210.
Also have other specific features, for example earth potential (G1, G2, G3, G4, G5, G6, G7 and G8), resistor (R3, R4, R5 and R6), inductor L
1, shunt (shunt) 314 and capacitor C
1The concrete operations of such parts will become clear according to Fig. 2.
In a particular embodiment, the A symbol of zone circle and the following point of the B symbolic representation of zone circle, these points can be in system (for example before series LED module 240 and afterwards) measuring voltage and/or electric current.
Fig. 3 shows the more details of the programmable power cell scheme 290 of Fig. 2.Show 110V/220V AC input in the input 202 of transmitting and 203 left sides to electromagnetic interference (EMI) filter/rectifier 330.To the direct current output 332 of transmitting electromagnetic interface filter/rectifier 330 as lower module 340, this module 340 has the power factor of combination and corrects (PFC), pulse-width modulation (PWM) and transformer.Also transmit another line signaling 334 of exporting 332 parallel connections, still separate with direct current with capacitor 336 to module 340.
(in Fig. 2 also) shows collection utmost point common voltage VCC 292, and this voltage can have the value between 5-35V in this embodiment.Also show Voltage Reference TL431, it can have value 2.5V.In other embodiments, being used for the value of VCC 292 and Voltage Reference TL431 can be lower or higher.
As indicated above, magnitude of voltage 262 depends on the value of Vref 237.The value of Vref 237 depend on the register resistor 225 that engages by one or more switch among Closing Switch SW1, SW2, SW4, SW64, the SW128 (be labeled as " 1 ", " 2 " ... " 32 ", " 64 " and " 128 ") number and concrete register resistor.Programmable magnitude of voltage (perhaps Vbus) 262 be shown as with current series connection in the led module number and the function of the minimum voltage Vbase of the product addition of related with it magnitude of voltage (for example being 0.5V to 1.5V in a particular embodiment).In this specific embodiment, number of modules is depicted as 255; Yet in other embodiments, the led module number can more than or be less than 255.Also can have and connect with Vref value 237 respectively and two other resistor R 7 and R8 in parallel.
The LED system of describing above with reference to Fig. 1-3 can be used in any setting in multiple the setting, and these settings comprise general lighting (for example street lamp) with LED and the LED-backlit that is used for television set.Fig. 4 A shows the LED system that is integrated in the general lighting, and Fig. 4 B shows the LED system that is integrated in the television set.
With reference to Fig. 4 A, on lamp socket 412 tops that can be a street lamp part, show lamp housing 410.Parts shown in Fig. 1-3 can be in lamp housing 410 or lamp socket 412 one or two in.Generally speaking, led module 140,240 can be arranged in lamp housing 410 so that illumination (shown in the arrow 414) to be provided at least.Lamp housing 410 can comprise any traditional characteristic related with illumination, for example glass or plastic sheath (being used for covering led module 140,240 when allowing light to pass through), reflector (being used to reflect the light from led module) etc.Though show the customized configuration of general lighting, the LED system 100,200 of Fig. 1-3 can be integrated in the illumination (oriented lamp that for example focuses on specific direction) of other type.In addition, the LED system of Fig. 1-3 can be incorporated into such as in the various dissimilar lamps such as car light, safety lamp.In addition, in certain embodiments, can use some of Fig. 1-3 or whole parts.For example can provide direct current in a particular embodiment.Thereby the AC/DC transducer can be optional.
With reference to Fig. 4 B, show television set 420.The LED system 100,200 of Fig. 1-3 can be integrated into and be used for the backlight of television set 420 (this television set can be the television set of LCD television set, LED television set or other type).Be similar to Fig. 4 A, can utilize all parts or some parts of the system 100,200 of Fig. 1-3.
Fig. 5 shows the schematic diagram according to the control device that is used for the LED system 500 of the embodiment of disclosure.Device 500 comprises detection module 502 and modified module 504.Wherein detection module 502 is used for the operation of a plurality of LED modules of testing circuit.Modified module 504 is used for revising the voltage that provides to described a plurality of led modules or electric current at least one in response to the operation of detected led module.
According to one embodiment of present invention, at least one in the inappropriate operation of the inefficacy of the temperature of detection module 502 detection led module when detecting the operation of a plurality of led modules, each led module or each led module.Wherein said circuit comprises at least one switch.Described device 500 also comprises splice module 506.Splice module 506 is used in the temperature that detects described LED engaging described at least one switch more than the predefine threshold value, when detecting the inefficacy of led module or detecting the inappropriate operation of led module.
According to another embodiment of the invention, detection module 502 detects the temperature of described led module when detecting the operation of described a plurality of led modules, and modified module 504 is provided according to the temperature of described led module by the electric current that provides to described a plurality of led modules.
According to still another embodiment of the invention, detection module 502 detects the inefficacy of each described led module or the inappropriate operation of each described led module when detecting the operation of described a plurality of led modules, and modified module 504 is revised the voltage that provides to described a plurality of led modules according to the inefficacy or the inappropriate operation of at least one led module in detected described a plurality of led modules.
According to another embodiment of the invention, the led module arranged in series, and install 500 and also comprise uncoupling module 508.Uncoupling module 508 is used for when the inefficacy of at least one led module that detects described led module or inappropriate operation, selectively described at least one led module in the described led module of electric uncoupling from described series connection.
According to another embodiment of the invention, modified module 504 is provided according to the number of the led module in the described series connection by the voltage that provides to described a plurality of led modules.
Should be appreciated that each module in the device 500 can realize by various devices, such as realizing by hardware, firmware and/or software.Described hardware for example can be application-specific integrated circuit (ASIC), field programmable gate array, digital signal processor etc.Perhaps, each module in the device 500 can also realize by the joint of hardware and software, for example instructs by the processor executive software and realizes.
Though carried out above describing in conjunction with concrete example embodiment, present disclosure will allow and those skilled in the art know that and/or point out various changes and modification to them.Change and modification all that are intended to that present disclosure covers as the scope that falls into claims is interior.
Claims (14)
1. one kind is used for system that the power parameter of light-emitting diode is programmed again, it is characterized in that comprising:
A plurality of LED modules;
The bus of Reprogrammable can be operated in order to provide power to described led module; And
Micro controller unit can be operated the voltage in order to the bus of revising described Reprogrammable.
2. system according to claim 1 is characterized in that, revises the voltage of the bus of described Reprogrammable when described micro controller unit at least one led module in described a plurality of led modules is detected as inefficacy or inappropriate operation.
3. system according to claim 1 is characterized in that,
At least some led modules in described a plurality of led module are electric coupling mutually selectively, and
The bus of described Reprogrammable is electrically coupled at least some led modules in described a plurality of led module selectively.
4. system according to claim 1, it is characterized in that, at least some led modules in described a plurality of led module comprise corresponding by-pass switch, described by-pass switch can operate in order to the bus that selectively led module is electrically coupled to described Reprogrammable or with the bus uncoupling of described Reprogrammable.
5. system according to claim 4 is characterized in that, described micro controller unit also can be operated in order to engage described by-pass switch.
6. system according to claim 4 is characterized in that, described micro controller unit is revised the voltage of the bus of described Reprogrammable according to the number of the by-pass switch that has engaged.
7. system according to claim 1 is characterized in that, described micro controller unit also can be operated in order to revise the electric current to described a plurality of led module supplies.
8. system according to claim 7 is characterized in that described micro controller unit is revised described electric current according to the temperature of described led module.
9. control device that is used for system that the power parameter of light-emitting diode is programmed again is characterized in that comprising:
Detection module is used for the operation of a plurality of LED modules of testing circuit; And
Modified module is used for revising the voltage that provides to described a plurality of led modules or electric current at least one in response to the operation of detected described led module.
10. control device according to claim 9, it is characterized in that, described detection module detects at least one in the inappropriate operation of the inefficacy of temperature, each described led module of described led module or each described led module when the operation that detects described a plurality of led modules, described circuit comprises at least one switch, and described control device also comprises:
Splice module is used in the temperature that detects described LED engaging described at least one switch more than the predefine threshold value, when detecting the inefficacy of led module or detecting the inappropriate operation of led module.
11. control device according to claim 9, it is characterized in that, described detection module detects the temperature of described led module when detecting the operation of described a plurality of led modules, and described modified module is provided according to the temperature of described led module by the electric current that provides to described a plurality of led modules.
12. control device according to claim 9, it is characterized in that, described detection module detects the inefficacy of each described led module or the inappropriate operation of each described led module when detecting the operation of described a plurality of led modules, and described modified module is revised the voltage that provides to described a plurality of led modules according to the inefficacy or the inappropriate operation of at least one led module in detected described a plurality of led modules.
13. control device according to claim 9 wherein is characterised in that, described led module arranged in series, and described control device also comprises:
The uncoupling module is used for when the inefficacy of at least one led module that detects described led module or inappropriate operation, selectively described at least one led module in the described led module of electric uncoupling from described series connection.
14. control device according to claim 13 is characterized in that, described modified module is provided according to the number of the led module in the described series connection by the voltage that provides to described a plurality of led modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206266398U CN202077216U (en) | 2010-11-22 | 2010-11-22 | System and its control device used for reprogramming power parameter of light emitting diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206266398U CN202077216U (en) | 2010-11-22 | 2010-11-22 | System and its control device used for reprogramming power parameter of light emitting diode |
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| CN202077216U true CN202077216U (en) | 2011-12-14 |
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| CN2010206266398U Expired - Lifetime CN202077216U (en) | 2010-11-22 | 2010-11-22 | System and its control device used for reprogramming power parameter of light emitting diode |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480821A (en) * | 2010-11-22 | 2012-05-30 | 意法半导体研发(深圳)有限公司 | System for reprogramming power parameters of light emitting diodes |
| CN103458551A (en) * | 2012-05-28 | 2013-12-18 | 冯向光 | Switch LED drive circuit and LED lighting system |
| CN103428958B (en) * | 2012-05-04 | 2017-04-12 | 欧司朗有限公司 | Circuit arranged for operating at least a first and a second cascade of LEDs |
-
2010
- 2010-11-22 CN CN2010206266398U patent/CN202077216U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480821A (en) * | 2010-11-22 | 2012-05-30 | 意法半导体研发(深圳)有限公司 | System for reprogramming power parameters of light emitting diodes |
| CN102480821B (en) * | 2010-11-22 | 2015-04-01 | 意法半导体研发(深圳)有限公司 | System for reprogramming power parameters of light emitting diodes |
| CN103428958B (en) * | 2012-05-04 | 2017-04-12 | 欧司朗有限公司 | Circuit arranged for operating at least a first and a second cascade of LEDs |
| CN103458551A (en) * | 2012-05-28 | 2013-12-18 | 冯向光 | Switch LED drive circuit and LED lighting system |
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Address after: 5 / F, East B501, South B502, North B503, 6th floor, block B, TCL Industrial Research Institute building, No. 006, Gaoxin South 1st Road, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Co-patentee after: STMicroelectronics Asia Pacific Pte. Ltd. Patentee after: STMicroelectronics (Shenzhen) R&D Co.,Ltd. Address before: 518057, 4/5 building, B block, South SKYWORTH building, South Zone, Shenzhen hi tech Zone, Nanshan District science and Technology Park, Guangdong, China Co-patentee before: STMicroelectronics Asia Pacific Pte. Ltd. Patentee before: STMicroelectronics (Shenzhen) R&D Co.,Ltd. |
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Granted publication date: 20111214 |