Patents by Inventor Dalibor Cvoric
Dalibor Cvoric has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240147590Abstract: A power converter for converting an input to an output for driving a load, said power converter comprising a switched mode power supply, SMPS, arranged for receiving an input and for converting said input to an output for driving said load, a buffer capacitor connected in a parallel branch across said load and arranged for buffering said output from said SMPS, a charge circuit, separate from said SMPS, and arranged for providing a charge current to said buffer capacitor until a voltage over said buffer capacitor exceeds a voltage threshold.Type: ApplicationFiled: March 4, 2022Publication date: May 2, 2024Inventors: GUY LOUIS PAUL DE BONDT, FRITS TOBI DE JONGH, DALIBOR CVORIC, HERMANUS JOHANNES MARIA VOS
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Publication number: 20240121871Abstract: In order to provide a balance between a fast start-up in start-up phase and a low light output ripple in normal operation phase, it is provided a LED driving circuit comprising: an input to receive a LED driving current, a buffer circuit adapted to buffer said LED driving current, and an output to be connected to LED and adapted to output the LED driving current, after buffered, to the LED, characterized in that, further comprises a buffer adjustment circuit adapted to adjust the buffer capability of the buffer circuit at a first level, in a start-up phase of the LED driving circuit when the LED driving circuit starts to receive said LED driving current, and adjust the buffer capability of the buffer circuit at a second level larger than the first level in a normal operation phase later than the start-up phase.Type: ApplicationFiled: March 7, 2022Publication date: April 11, 2024Inventors: SHAN QING, GUY LOUIS PAUL DE BONDT, JUNWEI TIAN, DALIBOR CVORIC, MORNA SHEN, HERMANUS JOHANNES MARIA VOS, FRITS TOBI DE JONGH
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Patent number: 11758627Abstract: A Light Emitting Diode, LED, based lighting device arranged for connection to an Alternating Current, AC, mains supply, comprising a zero-crossing detection module arranged for detecting a zero-crossing in an AC voltage supplied by said AC mains supply, a detection pulse module arranged for providing a detection pulse based on said detected zero-crossing, a human body detection module arranged for determining a current drawn from said AC mains supply during said provided detection pulse, and for determining presence of a human body based on said determined current, wherein said detection pulse module is arranged for providing said detection pulse during a rising, positive, edge of said AC voltage.Type: GrantFiled: June 23, 2020Date of Patent: September 12, 2023Assignee: SIGNIFY HOLDING B.V.Inventors: Guy Louis Paul De Bondt, Dalibor Cvoric, Franciscus Jacobus Vossen, Haimin Tao, Hermanus Johannes Maria Vos
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Patent number: 11672073Abstract: A lamp has a safety circuit connected to first and second electrical connection terminals. A test is used to detect if the first and second electrical connection terminals are both connected to external power without an interfering impedance such a human body, and only then enable operation of the lamp. A time for the test is different from a time when another lamp in the system applies a test.Type: GrantFiled: December 17, 2019Date of Patent: June 6, 2023Assignee: SIGNIFY HOLDING B.V.Inventors: Xiajuan Wu, Dalibor Cvoric, Ye Liu, Haimin Tao, Yun Wang, Han Lu, Jing Yang, Deyong Kong, Jing Li
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Publication number: 20220346205Abstract: A Light Emitting Diode, LED, based lighting device arranged for connection to an Alternating Current, AC, mains supply, comprising a zero-crossing detection module arranged for detecting a zero-crossing in an AC voltage supplied by said AC mains supply, a detection pulse module arranged for providing a detection pulse based on said detected zero-crossing, a human body detection module arranged for determining a current drawn from said AC mains supply during said provided detection pulse, and for determining presence of a human body based on said determined current, wherein said detection pulse module is arranged for providing said detection pulse during a rising, positive, edge of said AC voltage.Type: ApplicationFiled: June 23, 2020Publication date: October 27, 2022Inventors: Guy Louis Paul DE BONDT, Dalibor CVORIC, Franciscus Jacobus VOSSEN, Haimin TAO, Hermanus Johannes Maria VOS
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Publication number: 20220061142Abstract: A lamp has a safety circuit connected to first and second electrical connection terminals. A test is used to detect if the first and second electrical connection terminals are both connected to external power without an interfering impedance such a human body, and only then enable operation of the lamp. A time for the test is different from a time when another lamp in the system applies a test.Type: ApplicationFiled: December 17, 2019Publication date: February 24, 2022Inventors: XIAJUAN WU, DALIBOR CVORIC, YE LIU, HAIMIN TAO, YUN WANG, HAN LU, JING YANG, DEYONG KONG, JING LI
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Patent number: 10785844Abstract: A retrofit LED tube for connection to an electronic ballast, said retrofit LED tube comprising an LED array for emitting light, an alternating current, AC, LED driver arranged for receiving an AC supply voltage and for driving said LED array based on said received AC supply voltage, a filament circuit for supporting a filament current circulating back to said electronic ballast for enabling lamp recognition by said electronic ballast during a lamp recognition phase, and a lamp current to said AC LED driver for driving said LED array during a steady-state phase, and comprising a filament enhancement circuit arranged to reduce at least one of said filament current and said lamp current flowing through said filament circuit, during said steady-state phase.Type: GrantFiled: December 11, 2017Date of Patent: September 22, 2020Assignee: SIGNIFY HOLDING B.V.Inventors: Dalibor Cvoric, Yi Wang, Haimin Tao
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Publication number: 20200015329Abstract: A retrofit LED tube for connection to an electronic ballast, said retrofit LED tube comprising an LED array for emitting light, an alternating current, AC, LED driver arranged for receiving an AC supply voltage and for driving said LED array based on said received AC supply voltage, a filament circuit for supporting a filament current circulating back to said electronic ballast for enabling lamp recognition by said electronic ballast during a lamp recognition phase, and a lamp current to said AC LED driver for driving said LED array during a steady-state phase, and comprising a filament enhancement circuit arranged to reduce at least one of said filament current and said lamp current flowing through said filament circuit, during said steady-state phase.Type: ApplicationFiled: December 11, 2017Publication date: January 9, 2020Inventors: DALIBOR CVORIC, YI WANG, HAIMIN TAO
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Patent number: 10257907Abstract: The invention describes an LED lighting module (1) comprising input terminals (13hi, 13lo) for connecting to an input voltage (Uin); an LED load (10) realized to operate at an upper threshold voltage level (Vdim); and a regulation circuit (11, 12) realized to decrease LED current (ILED) through the LED load (10) when the input voltage (Uin) is greater than the upper threshold voltage level (Vdim). The invention further describes an LED lighting arrangement (4) and a method of driving an LED load (10).Type: GrantFiled: June 13, 2016Date of Patent: April 9, 2019Assignee: SIGNIFY HOLDING B.V.Inventors: Marcel Beij, Bertrand Johan Edward Hontele, Patrick Alouisius Martina De Bruycker, Dmytro Viktorovych Malyna, Dalibor Cvoric
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Patent number: 10070488Abstract: Control circuits (1) bring power converters (4) in different modes in response to detection results. The power converters (4) exchange possibly rectified first voltage/current signals with electronic halogen transformers (2) and supply second voltage/current signals to light emitting diode circuits (5). The first current signals have, in different modes, different amplitudes. The different amplitudes have different constant values and/or different derivative values. As a result, the first current signal has become a relatively varying first current signal. Then, the halogen transformers (2) no longer experience problems that occur when smaller amounts of power need to be provided than designed to. The detections may comprise polarity detections of and/or zero-crossing detections in the first voltage signals. The halogen transformers (2) comprise self-oscillating switched mode power supplies designed to provide first amounts of power at their outputs.Type: GrantFiled: March 22, 2017Date of Patent: September 4, 2018Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Kumar Arulandu, Georg Sauerlander, Sait Izmit, Dennis Johannes Antonius Claessens, Philip Louis Zulma Vael, Yi Wang, Dalibor Cvoric, Ronald Hans Van Der Voort, Patrick Alouisius Martina De Bruycker, Robertus Leonardus Tousain
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Publication number: 20180192485Abstract: The invention describes an LED lighting module (1) comprising input terminals (13hi, 13lo) for connecting to an input voltage (Uin); an LED load (10) realised to operate at an upper threshold voltage level (Vdim); and a regulation circuit (11, 12) realised to decrease LED current (ILED) through the LED load (10) when the input voltage (Uin) is greater than the upper threshold voltage level (Vdim). The invention further describes an LED lighting arrangement (4) and a method of driving an LED load (10).Type: ApplicationFiled: June 13, 2016Publication date: July 5, 2018Applicant: PHILIPS LIGHTING HOLDING B.V.Inventors: MARCEL BEIJ, BERTRAND JOHAN EDWARD HONTELE, PATRICK ALOUISIUS MARTINA DE BRUYCKER, DMYTRO VIKTOROVYCH MALYNA, DALIBOR CVORIC
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Patent number: 9973072Abstract: The invention relates to a power converter stage (2) for providing power supply to a power converter controller (3), a power converter controller (3) for such power converter stage (2), a power converter (1) including such power converter stage (2) and such power converter controller (3), a method for providing power to a controller (3) of a power converter (1) and a software product for controlling a power converter (1).Type: GrantFiled: October 16, 2013Date of Patent: May 15, 2018Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Jurgen Margriet Antonius Willaert, Dalibor Cvoric
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Publication number: 20170196059Abstract: Control circuits (1) bring power converters (4) in different modes in response to detection results. The power converters (4) exchange possibly rectified first voltage/current signals with electronic halogen transformers (2) and supply second voltage/current signals to light emitting diode circuits (5). The first current signals have, in different modes, different amplitudes. The different amplitudes have different constant values and/or different derivative values. As a result, the first current signal has become a relatively varying first current signal. Then, the halogen transformers (2) no longer experience problems that occur when smaller amounts of power need to be provided than designed to. The detections may comprise polarity detections of and/or zero-crossing detections in the first voltage signals. The halogen transformers (2) comprise self-oscillating switched mode power supplies designed to provide first amounts of power at their outputs.Type: ApplicationFiled: March 22, 2017Publication date: July 6, 2017Inventors: KUMAR ARULANDU, GEORG SAUERLANDER, SAIT IZMIT, DENNIS JOHANNES ANTONIUS CLAESSENS, PHILIP LOUIS ZULMA VAEL, YI WANG, DALIBOR CVORIC, RONALD HANS VAN DER VOORT, PATRICK ALOUISIUS MARTINA DE BRUYCKER, ROBERTUS LEONARDUS TOUSAIN
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Patent number: 9693403Abstract: The invention describes a low-power load arrangement (1) comprising a low-power load (3); a driver (2) for the low-power load (3); connectors (300) for connecting to an electronic transformer (2) realized for converting a mains power supply (4) to a power supply for a normal-power load (5); and a reverse current generating means (LP, SB) realized to provide a reverse current (Irev_LP, Irev_SB) to sustain self-oscillation during operation of the electronic transformer (2), wherein the direction of current flow of the reverse current (Irev_LP, Irev_SB) is opposite in direction to the output current of the electronic transformer (2).Type: GrantFiled: December 18, 2014Date of Patent: June 27, 2017Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Ronald Hans Van Der Voort, Patrick Alouisius Martina De Bruycker, Dalibor Cvoric, Georg Sauerlander, Kumar Arulandu
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Patent number: 9629208Abstract: Control circuits (1) bring power converters (4) in different modes in response to detection results. The power converters (4) exchange possibly rectified first voltage/current signals with electronic halogen transformers (2) and supply second voltage/current signals to light emitting diode circuits (5). The first current signals have, in different modes, different amplitudes. The different amplitudes have different constant values and/or different derivative values. As a result, the first current signal has become a relatively varying first current signal. Then, the halogen transformers (2) no longer experience problems that occur when smaller amounts of power need to be provided than designed to. The detections may comprise polarity detections of and/or zero-crossing detections in the first voltage signals. The halogen transformers (2) comprise self-oscillating switched mode power supplies designed to provide first amounts of power at their outputs.Type: GrantFiled: November 4, 2013Date of Patent: April 18, 2017Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Kumar Arulandu, Georg Sauerländer, Sait Izmit, Dennis Claessens, Philip Louis Zulma Vael, Yi Wang, Dalibor Cvoric, Ronald Hans Van Der Voort, Patrick Alouisius Martina De Bruycker, Robertus Leonardus Tousain
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Publication number: 20170006674Abstract: The invention describes a low-power load arrangement (1) comprising a low-power load (3); a driver (2) for the low-power load (3); connectors (300) for connecting to an electronic transformer (2) realised for converting a mains power supply (4) to a power supply for a normal-power load (5); and a reverse current generating means (LP, SB) realised to provide a reverse current (Irev LP, Irev SB) to sustain self-oscillation during operation of the electronic transformer (2), wherein the direction of current flow of the reverse current (Irev_LP, Irev_SB) is opposite in direction to the output current of the electronic transformer (2).Type: ApplicationFiled: December 18, 2014Publication date: January 5, 2017Applicant: PHILIPS LIGHTING HOLDINGS B.V.Inventors: Ronald Hans VAN DER VOORT, Patrick Alouisius Martina DE BRUYCKER, Dalibor CVORIC, Georg SAUERLANDER, Kumar ARULANDU
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Publication number: 20150305104Abstract: Control circuits (1) bring power converters (4) in different modes in response to detection results. The power converters (4) exchange possibly rectified first voltage/current signals with electronic halogen transformers (2) and supply second voltage/current signals to light emitting diode circuits (5). The first current signals have, in different modes, different amplitudes. The different amplitudes have different constant values and/or different derivative values. As a result, the first current signal has become a relatively varying first current signal. Then, the halogen transformers (2) no longer experience problems that occur when smaller amounts of power need to be provided than designed to. The detections may comprise polarity detections of and/or zero-crossing detections in the first voltage signals. The halogen transformers (2) comprise self-oscillating switched mode power supplies designed to provide first amounts of power at their outputs.Type: ApplicationFiled: November 4, 2013Publication date: October 22, 2015Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Kumar ARULANDU, Georg SAUERLĂ„NDER, Sait IZMIT, DENNIS CLAESSENS, Philip Louis Zulma VAEL, Yi WANG, Dalibor CVORIC, Ronald Hans VAN DER VOORT, Patrick Alouisius Martina DE BRUYCKER, Robertus Leonardus TOUSAIN
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Publication number: 20150288273Abstract: The invention relates to a power converter stage (2) for providing power supply to a power converter controller (3), a power converter controller (3) for such power converter stage (2), a power converter (1) including such power converter stage (2) and such power converter controller (3), a method for providing power to a controller (3) of a power converter (1) and a software product for controlling a power converter (1).Type: ApplicationFiled: October 16, 2013Publication date: October 8, 2015Inventors: Jurgen Margriet Antonius Willaert, Dalibor Cvoric