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1. 发明申请

US20220256667A1 LED BASED ILLUMINATION SYSTEM 有权
公开(公告)号：US20220256667A1
公开(公告)日：2022-08-11
申请号：US17629980
申请日：2020-07-29
申请人： eldoLAB Holding B.V.
发明人： Marc SAES , Tijs VERSTEEGDE
IPC分类号： H05B45/30 , H05B47/175
摘要： A method of initializing an LED driver to power an LED light engine comprising one or more LEDs is disclosed, the method comprising: connecting a control terminal of the LED driver to a control terminal of the LED light engine; determining whether the control terminal of the LED light engine is a communication terminal by outputting a communication signal from the control terminal of the LED driver to the control terminal of the LED light engine; establishing that the control terminal of the LED light engine is a communication terminal if a reply communication signal to the communication signal is received within a predetermined period; if the control terminal of the LED light engine is a communication terminal, perform an initialisation of the LED driver by exchanging configuration data between the LED driver and the LED light engine; if the control terminal of the LED light engine is not a communication terminal, determining an impedance value observed at the control terminal of the LED light engine and performing an initialisation of the LED driver based on the impedance value.

2. 发明授权

US11258511B2 System and method for operating at least one LED unit of a lighting grid comprising a plurality of LED units 有权
公开(公告)号：US11258511B2
公开(公告)日：2022-02-22
申请号：US16649413
申请日：2018-10-05
申请人： eldoLAB Holding B.V.
发明人： Marc Saes , Andy Johanna Elisabeth Otten
IPC分类号： H04B10/00 , H04B10/116 , H05B45/22 , H05B47/195 , H05B45/12 , H04B10/50 , H04B10/66
摘要： The present invention pertains to a system and method for operating at least one LED unit of lighting grid comprising a plurality of LED units, wherein the LED units are configured to transmit a VLC signal including a code word. A plurality of user equipment devices captures the light transmitted by the LED unit and determines parameters related to the light, such as a VLC quality parameter, flicker value, light intensity parameter and light colour parameter. Based on these parameters, a controller determines control parameters for the LED unit. As such, a feedback loop is created wherein the LED unit is controlled based on measurements with the user equipment devices.

3. 发明授权

US11163347B2 Digital communication system and a method of transferring power and data between circuits of the system 有权
公开(公告)号：US11163347B2
公开(公告)日：2021-11-02
申请号：US16640555
申请日：2018-08-29
申请人： EldoLAB Holding B.V.
发明人： Marc Saes
IPC分类号： G06F1/26 , G06F13/20 , G06F13/40 , H02J7/34
摘要： A method of transferring power and data between a first circuit and a second circuit is described, whereby the second circuit comprises a processing unit having an I/O terminal and an electric energy storage element, the electric energy storage element being configured to be charged by the first circuit via the I/O terminal and configured to power the processing unit, the method comprising: establishing a wired communication link between an I/O terminal of the first circuit and the I/O terminal of the second circuit; operating the I/O terminal of the second circuit as an output terminal and the I/O terminal of the first circuit as an input terminal; transmitting data via the I/O terminal of the second circuit to the I/O terminal of the first circuit by modulating an output level of the I/O terminal of the second circuit between a high level and a low level; determining whether the output level of the I/O terminal of the second circuit corresponds to the high level or the low level and, when the output level corresponds to the high level: operating the I/O terminal of the first circuit as an output terminal; and raising an output level of the I/O terminal of the first circuit to a level that is at least equal to the high level during at least part of a period when the output level of the I/O terminal of the second circuit corresponds to the high level, thereby charging the electric energy storage element.

4. 发明申请

US20210259079A1 CONTROL CIRCUITS AND METHODS FOR DRIVING AT LEAST ONE LED GROUP 有权
公开(公告)号：US20210259079A1
公开(公告)日：2021-08-19
申请号：US17253429
申请日：2019-07-08
申请人： Eldolab Holding B.V.
发明人： Marc SAES
IPC分类号： H05B45/48 , H05B45/3725
摘要： According to a first aspect of the invention, a control circuit and method are provided for a controlled start-up of N LED groups, wherein the control circuit comprises a LED switching element and a chargeable element in parallel with each LED group, and a low-power source, and wherein the method comprises a step of prior to supplying power to the LED groups, setting the LED switching elements in a second state which corresponds with the LED group being off, by charging the chargeable elements with the low-power source.
According to a second aspect a control circuit and method are provided for controlling X LED groups, wherein the control circuit comprises a LED switching element and a chargeable element in parallel with each LED group, wherein the top of a lower chargeable element is connected via a diode with the top of a higher chargeable element.
According to a third aspect of the invention, a control circuit and method are provided for controlling M LED groups, wherein the control circuit comprises a LED switching element and a chargeable element in parallel with each LED group, and a switch, wherein the switch has a lighting mode wherein current flows through the LED groups or the corresponding LED switching elements, and a charging mode wherein current flows to the chargeable elements, thereby charging the chargeable elements.

5. 发明授权

US10484090B2 Method for changing the identification code of a light source in visible light communication systems 有权
公开(公告)号：US10484090B2
公开(公告)日：2019-11-19
申请号：US15571655
申请日：2016-05-03
申请人： ELDOLAB HOLDING B.V.
发明人： Marc Saes , Stephen Haight Lydecker
IPC分类号： H04B10/00 , H04B10/116 , H05B37/02 , H04B10/50 , H04B10/60
摘要： The invention relates to a method for changing the identification code of a light source in a visible light communication system, which visible light communication system comprises the light source, a driver system to drive the light source, and a server that is not able to communicate directly with the driver system, and which method makes use of a first mobile device comprising an image sensor, a processing unit, a network adapter, and a transmitter, wherein the processing unit is configured to process an output of the image sensor, wherein the processing unit is configured to communicate with the server via the network adapter, and wherein the processing unit is configured to send signals to the driver system using the transmitter, said method comprising the following steps: a. receiving a signal from the server by the network adapter of the first mobile device, said signal comprising a command to change the identification code of the light source from a first ID code to a second ID code; and b. transmitting, by the transmitter of the first mobile device, a signal to the driver system, said signal comprising a command to change the identification code of the light source to a second ID code.

6. 发明申请

US20190141802A1 MODULAR LIGHTING APPLICATION 审中-公开
公开(公告)号：US20190141802A1
公开(公告)日：2019-05-09
申请号：US16095252
申请日：2017-04-21
申请人： Eldolab Holding B.V.
发明人： Marc SAES , Stephen Haight LYDECKER , Tijs VERSTEEGDE
IPC分类号： H05B33/08 , F21S2/00
摘要： A modular system includes an LED driver and an LED light engine. The driver includes a switched mode power converter and a first control unit to control a switch of the converter, thereby controlling the supply current to an LED assembly of the light engine. The assembly includes LEDs and one or more switches arranged in series or in parallel with one or more of the LEDs. The light engine also includes a second control unit controlling the one or more switches of the LED assembly so as to control current through the LEDs. The first control unit controls amplitude of the supply current. The second control unit controls duty cycle of the LED current through the LEDs. The first and second control units are configured to synchronize a switching operation of the switched mode power converter with a switching operation of the switches of the light engine.

7. 发明授权

US10159126B2 LED based lighting application 有权
公开(公告)号：US10159126B2
公开(公告)日：2018-12-18
申请号：US15687852
申请日：2017-08-28
申请人： ELDOLAB HOLDING B.V.
发明人： Petrus Johannes Maria Welten
IPC分类号： H05B37/02 , H05B33/08
摘要： The present invention relates to a lighting application, the lighting application comprises an LED assembly comprising a serial connection of two or more LED units, each LED unit comprising one or more LEDs, each LED unit being provided with a controllable switch for substantially short-circuiting the LED unit. The lighting application further comprises a control unit for controlling a drive unit and arranged to receive a signal representing a voltage level of the supply voltage, and control the switches in accordance with the signal. The invention further provides for an LED driver that enables to operate a TRIAC based dimmer at an optimal holding current and an LED driver comprising a switchable buffer, e.g. a capacitor.

8. 发明申请

US20170127487A1 METHODS AND APPARATUSES FOR OPERATING GROUPS OF HIGH-POWER LEDS 审中-公开
公开(公告)号：US20170127487A1
公开(公告)日：2017-05-04
申请号：US15399823
申请日：2017-01-06
申请人： EldoLAB Holding B.V.
发明人： Machiel Slot , Antonius Jacobus Maria Cremer
IPC分类号： H05B33/08 , H05B37/02
CPC分类号： H05B33/0815 , H05B33/0818 , H05B33/0824 , H05B33/083 , H05B33/0842 , H05B33/0854 , H05B33/0863 , H05B37/0209 , H05B37/0218 , H05B37/0254 , H05B37/0272 , H05B37/0281 , Y02B20/346
摘要： An energy-efficient, compact and cost-effective solution for driving a number of high-power LED groups for lighting applications includes using a single switching power supply together with LEDs connected in series and/or in parallel and pulse width-controlled switches in parallel across the individually controllable LED groups. If the switch of an LED group is ON, the LED group will not light up. If the switch is in the OFF position, the full current of the power supply will pass through the corresponding LED group.

9. 发明申请

US20220263574A1 LED DRIVER FOR VLC 有权
公开(公告)号：US20220263574A1
公开(公告)日：2022-08-18
申请号：US17352490
申请日：2021-06-21
申请人： eldoLAB Holding B.V.
发明人： Marc SAES , Andy Johanna Elisabeth Otten
IPC分类号： H04B10/116 , H05B45/20 , H05B45/10
摘要： A visual light communication (VLC) method for a lighting system comprising an LED driver and a plurality of LEDs or LED groups includes the steps of: receiving a set-point representing a desired illumination characteristic, comprising an intensity set-point, a color set-point or a combination thereof, and data that is to be transmitted using VLC; determining a current profile for each LED or LED group of the plurality of LEDs or LED groups based on the desired illumination characteristic represented by the set-point, whereby an envelope of a combined current profile is modulated for a corresponding intensity variation as perceived by a sensor to represent a variable length VLC code comprising one or more code words; and generating one or more control signals to drive the plurality of LEDs or LED groups in accordance with the current profiles for the plurality of LEDs or LED groups to transmit the VLC code.

10. 发明授权

US11013077B2 LED driver dimming 有权
公开(公告)号：US11013077B2
公开(公告)日：2021-05-18
申请号：US16091187
申请日：2017-04-21
申请人： Eldolab Holding B.V.
发明人： Marc Saes , Stephen Haight Lydecker
IPC分类号： H05B45/10 , H05B45/20 , H05B45/48
摘要： An LED driver has outputs to drive LEDs in groups of different colour temperatures. An input is configured to receive setpoint information, and a control device is configured to determine a combined LED setpoint intensity for the groups and a combined LED setpoint colour temperature for the groups, from the LED setpoint information. If the LED setpoint intensity is above a threshold, the control device operates the LED driver outputs to mix the LED group outputs to jointly achieve the LED setpoint intensity and the LED setpoint colour temperature. If the LED setpoint intensity is below the threshold, the control device selects a single LED group, operates the LED driver output associated with the selected LED group to drive that one LED group at the LED setpoint intensity, and operates the remaining LED driver outputs to drive the remaining LED groups at zero LED intensity.

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