Patents by Inventor Pieter Johannes Stobbelaar
Pieter Johannes Stobbelaar 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: 20230379056Abstract: An optical wireless communication module comprising a plurality of optical transceivers and a controller, wherein the controller is configured to determine the optical transceivers to be used based on movement information of a UE, to activate the optical transceivers to be used and to deactivate other optical transceivers, such that it consumes less energy without compromising Quality of Service.Type: ApplicationFiled: September 30, 2021Publication date: November 23, 2023Inventors: MATTHIAS WENDT, PIETER JOHANNES STOBBELAAR, PAUL HENRICUS JOHANNES MARIA VAN VOORTHUISEN
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Publication number: 20230275660Abstract: An Optical Wireless Communication, OWC, system uses a receiving unit having a motion sensor for sensing motion and orientation of the receiving unit. A controller of the system (which may be part of a receiving unit or a transmitting unit or external to both) is configured to derive a prediction of the future orientation and position of the receiving unit, while receiving data from a transmitting unit. From the prediction, a different transmitting unit of the set may be selected for future data transfer and/or a different communication system may be selected for future data transfer.Type: ApplicationFiled: July 5, 2021Publication date: August 31, 2023Inventors: MATTHIAS WENDT, PIETER JOHANNES STOBBELAAR
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Patent number: 11137119Abstract: A tubular solid state lighting device has a pin safety circuit electrically connected to connection pins of the one end. The pin safety circuit comprises two protection components, of different types. In one set of examples, there is an electrically controlled isolation switch and an electronic switch which functions as a high voltage isolation barrier. The switch provides full galvanic contact separation, whereas the isolation barrier provides current protection if the isolation switch is not functional. In another set of examples, there is a mechanically controlled isolation switch and an electrical or electronic isolation barrier. This provides two levels of protection, but requiring only a single manual operation by the installer of the lighting device. It avoids end-of-life protection circuitry being triggered during the installation of the lighting device.Type: GrantFiled: May 8, 2017Date of Patent: October 5, 2021Assignee: SIGNIFY HOLDING B.V.Inventors: Haimin Tao, Tian Xiang Wen, Feng Ju, Frits Tobi De Jongh, Han Lu, Pieter Johannes Stobbelaar
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Patent number: 11109470Abstract: A retrofit tubular lighting device (7), comprising first (p1, p2) and second connection pins (p3, p4), a first (12) and second filament emulation circuit (13) coupled to the first (p1, p2) and second connection pins (p3, p4) respectively, a lighting element (4), a driver (3) coupled to the first (12) and second filament emulation circuit (13), a battery (5) and the lighting element (4). The driver (3) provides a charge to the lighting element (4) and the battery (5). The battery (5) stores the charge provided by the driver (3) and provides charge to the lighting element (4). A communication device sends a first charging signal to another lighting device comprising a further battery and coupled to the electronic ballast, when the charge of the battery (5) is below a first threshold. The communication device receives a second charging signal from the other lighting device, wherein the second charging signal indicates that a further charge of the further battery is below a second threshold.Type: GrantFiled: July 16, 2018Date of Patent: August 31, 2021Assignee: SIGNIFY HOLDING B.V.Inventors: Bernd Ackermann, Theodorus Johannes Petrus Van Den Biggelaar, Pieter Johannes Stobbelaar, Haimin Tao, Henricus Theodorus Van Der Zanden
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Patent number: 10986712Abstract: A control circuit, of a control loop, for a lighting driver. The lighting driver is adapted to controllably connect an electronic ballast to an LED light source or lamp. The control circuit comprises a biasing circuit having an adjustable impedance. A tuning circuit adjusts the impedance of the biasing circuit so as to tune a parameter of a frequency response of the control loop and thereby of the lighting driver.Type: GrantFiled: September 25, 2018Date of Patent: April 20, 2021Assignee: SIGNIFY HOLDING B.V.Inventors: Liang Shi, Adrianus Johannes Stephanus Maria De Vaan, Pieter Johannes Stobbelaar, Xianhui Zhang, Paul Robert Veldman, Hui Zheng, Gang Wang
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Patent number: 10841988Abstract: A retrofit Light Emitting Diode, LED, tube for replacing a fluorescent tube, wherein said retrofit LED tube is arranged to be connected to a ballast, said retrofit LED tube comprising a ballast determining unit arranged for identifying a type of ballast connected to said retrofit LED tube by controlling an output voltage of said power rectifier to a first voltage and measuring a first current provided by said power rectifier, controlling said output voltage of said power rectifier to a second voltage and measuring a second current provided by said power rectifier, wherein said second voltage differs from said first voltage and determining said type of ballast based on said first and second output voltages and said measured first and second currents, wherein said ballast determining unit is further arranged to configure said configurable matching circuit based on said determined type of ballast.Type: GrantFiled: December 14, 2017Date of Patent: November 17, 2020Assignee: SIGNIFY HOLDING B.V.Inventors: Anteneh Alemu Abbo, Haimin Tao, Bernd Ackermann, Kumar Arulandu, Wai Pang Chow, Pieter Johannes Stobbelaar, Ger Van Hees
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Publication number: 20200236761Abstract: A control circuit, of a control loop, for a lighting driver. The lighting driver is adapted to controllably connect an electronic ballast to an LED light source or lamp. The control circuit comprises a biasing circuit having an adjustable impedance. A tuning circuit adjusts the impedance of the biasing circuit so as to tune a parameter of a frequency response of the control loop and thereby of the lighting driver.Type: ApplicationFiled: September 25, 2018Publication date: July 23, 2020Inventors: LIANG SHI, ADRIANUS JOHANNES STEPHANUS MARIA DE VAAN, PIETER JOHANNES STOBBELAAR, XIANHUI ZHANG, PAUL ROBERT VELDMAN, HUI ZHENG, GANG WANG
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Publication number: 20200214107Abstract: A retrofit tubular lighting device (7), comprising first (p1, p2) and second connection pins (p3, p4), a first (12) and second filament emulation circuit (13) coupled to the first (p1, p2) and second connection pins (p3, p4) respectively, a lighting element (4), a driver (3) coupled to the first (12) and second filament emulation circuit (13), a battery (5) and the lighting element (4). The driver (3) provides a charge to the lighting element (4) and the battery (5). The battery (5) stores the charge provided by the driver (3) and provides charge to the lighting element (4). A communication device sends a first charging signal to another lighting device comprising a further battery and coupled to the electronic ballast, when the charge of the battery (5) is below a first threshold. The communication device receives a second charging signal from the other lighting device, wherein the second charging signal indicates that a further charge of the further battery is below a second threshold.Type: ApplicationFiled: July 16, 2018Publication date: July 2, 2020Inventors: BERND ACKERMANN, THEODORUS JOHANNES PETRUS VAN DEN BIGGELAAR, PIETER JOHANNES STOBBELAAR, HAIMIN TAO, HENRICUS THEODORUS VAN DER ZANDEN
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Publication number: 20200205262Abstract: The invention provides a conversion circuit for a lamp. The conversion circuit converts first signals, from a ballast, into second signals, for a lighting arrangement. The conversion circuit comprises a transformer having characteristics which contribute to a desired conversion of the first signals to the second signals. The transformer, formed of a first winding and a second winding, further provides an isolated power supply for an auxiliary device connected to the second winding.Type: ApplicationFiled: June 1, 2018Publication date: June 25, 2020Inventors: BERND ACKERMANN, THEODORUS JOHANNES VAN DEN BIGGELAAR, PIETER JOHANNES STOBBELAAR, HAIMIN TAO, HENRICUS THEODORUS VAN DER ZANDEN
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Publication number: 20200041076Abstract: A retrofit Light Emitting Diode, LED, lighting device for connection to an electronic ballast is presented. Wherein the LED lighting device comprises a steady state mode during which it emits light and a standby mode during which it is not emitting light. The retrofit LED lighting device comprises an LED array for emitting light during said steady state mode; an alternating current, AC, LED driver arranged for receiving an AC supply voltage, from said electronic ballast during said steady state mode and for driving said LED array based on said received AC supply voltage. It also comprises of a filament circuit arranged for receiving said AC supply voltage from said electronic ballast and for supporting a filament current circulating back to said electronic ballast for indicating a presence said lighting device to said electronic ballast, and a lamp current to said AC LED driver for driving said LED array for emitting said light during said steady state mode.Type: ApplicationFiled: February 14, 2018Publication date: February 6, 2020Inventors: HENRICUS THEODORUS VAN DER ZANDEN, BERND ACKERMANN, THEODORUS JOHANNES PETRUS VAN DEN BIGGELAAR, HAIMIN TAO, PIETER JOHANNES STOBBELAAR
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Publication number: 20200015333Abstract: A lighting device (7) comprises an input terminal for receiving an input power, a power converter (5) for receiving the input power from the input terminal, and for transforming the input power into a charging power and a supply power, an energy storage device (11) for receiving the charging power and for providing a discharging power. The lighting device (7) further comprises an LED load (9) for receiving the supply power and the discharging power, wherein the lighting device (7) is arranged to be operated in a first mode and in a second mode, wherein in the first mode the LED load (9) is arranged to receive the supply power from the power conversion unit, and the energy storage device (11) is arranged to receive the charging power from the power converter, wherein in the second mode the LED load (9) is arranged to receive the discharging power from the energy storage device.Type: ApplicationFiled: March 5, 2018Publication date: January 9, 2020Inventors: BERND ACKERMANN, MATTHIAS WENDT, GOUTAM MAJI, THEODORUS JOHANNES PETRUS VAN DEN BIGGELAAR, HARALD JOSEF GUNTHER RADERMACHER, PIETER JOHANNES STOBBELAAR, PRIYA RANJAN MISHRA, HAIMIN TAO, HENRY THEODORUS VAN DER ZANDEN
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Publication number: 20190346087Abstract: A retrofit Light Emitting Diode, LED, tube for replacing a fluorescent tube, wherein said retrofit LED tube is arranged to be connected to a ballast, said retrofit LED tube comprising a ballast determining unit arranged for identifying a type of ballast connected to said retrofit LED tube by controlling an output voltage of said power rectifier to a first voltage and measuring a first current provided by said power rectifier, controlling said output voltage of said power rectifier to a second voltage and measuring a second current provided by said power rectifier, wherein said second voltage differs from said first voltage and determining said type of ballast based on said first and second output voltages and said measured first and second currents, wherein said ballast determining unit is further arranged to configure said configurable matching circuit based on said determined type of ballast.Type: ApplicationFiled: December 14, 2017Publication date: November 14, 2019Inventors: ANTENEH ALEMU ABBO, HAIMIN TAO, BERND ACKERMANN, KUMAR ARULANDU, WAI PANG CHOW, PIETER JOHANNES STOBBELAAR, GER VAN HEES
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Publication number: 20190154246Abstract: A tubular solid state lighting device has a pin safety circuit electrically connected to connection pins of the one end. The pin safety circuit comprises two protection components, of different types. In one set of examples, there is an electrically controlled isolation switch and an electronic switch which functions as a high voltage isolation barrier. The switch provides full galvanic contact separation, whereas the isolation barrier provides current protection if the isolation switch is not functional. In another set of examples, there is a mechanically controlled isolation switch and an electrical or electronic isolation barrier. This provides two levels of protection, but requiring only a single manual operation by the installer of the lighting device. It avoids end-of-life protection circuitry being triggered during the installation of the lighting device.Type: ApplicationFiled: May 8, 2017Publication date: May 23, 2019Inventors: HAIMIN TAO, TIAN XIANG WEN, FENG JU, FRITS TOBI DE JONGH, HAN LU, PIETER JOHANNES STOBBELAAR
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Publication number: 20180023770Abstract: The invention relates to a light emitting device (2) for retrofitting a fluorescent lamp comprising two sets of connecting pins (21, 23, 21?, 23?) for connecting the light emitting system (1) to a lighting fixture, one first (611) and one second (613) filament unit, encapsulated in a bulb and fed through it, electrically coupled to the connecting pins (611, 613) and a solid state light source connected between the filament units.Type: ApplicationFiled: January 28, 2016Publication date: January 25, 2018Inventors: Raimundo DE HEER GALISTEO, Bernhard Christiaan VAN DIJK, Haimin TAO, Tian Xiang WEN, Sascha KONDIC, Pieter Johannes STOBBELAAR, Paul Robert VELDMAN
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Publication number: 20090015128Abstract: The invention relates to a light-emitting device comprising an electrode with a ceramic oxide material, which is brought in to contact with a reducing agent or a precursor thereof. The reducing agent serves to bind the released oxygen and to control the performance of the light-emitting device.Type: ApplicationFiled: May 31, 2006Publication date: January 15, 2009Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Uwe Chittka, Daniela Buttner, Pieter Johannes Stobbelaar, Saskia Tromp-Van Den Bogaerdt