Patents by Inventor Lukas Leyten
Lukas Leyten 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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Patent number: 7619367Abstract: A method of electronic ballast protection including providing an electronic ballast having an AC/DC converter 104 with an electronic ballast input and a mains voltage connection 103 connectable to a mains voltage 102, an inverter 120 operably connected to the AC/DC converter 104 and having an electronic ballast output 125 connectable to a lamp 124, a control circuit 116 controlling the inverter 120, and a low voltage power supply 114 providing low voltage power to the control circuit 116; supplying power to the low voltage power supply 114 from the electronic ballast input when the mains voltage connection 103 is wired to mains voltage 102; and disconnecting the power to the low voltage power supply 114 when the electronic ballast output 125 is wired to the mains voltage 102.Type: GrantFiled: July 7, 2005Date of Patent: November 17, 2009Assignee: Koninklijke Philips Electronics N.V.Inventors: Roy Hendrik Anna Maria Van Zundert, Subramanian Muthu, Wouter Edgard Koen Broeckx, Gerlach Corne Pieter Maria Emmen, Oscar Jan Deurloo, Lukas Leyten
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Publication number: 20080297956Abstract: A method of electronic ballast protection including providing an electronic ballast having an AC/DC converter 104 with an electronic ballast input and a mains voltage connection 103 connectable to a mains voltage 102, an inverter 120 operably connected to the AC/DC converter 104 and having an electronic ballast output 125 connectable to a lamp 124, a control circuit 116 controlling the inverter 120, and a low voltage power supply 114 providing low voltage power to the control circuit 116; supplying power to the low voltage power supply 114 from the electronic ballast input when the mains voltage connection 103 is wired to mains voltage 102; and disconnecting the power to the low voltage power supply 114 when the electronic ballast output 125 is wired to the mains voltage 102.Type: ApplicationFiled: July 7, 2005Publication date: December 4, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Roy Hendrik Anna Maria Van Zundert, Subramanian Muthu, Wouter Edgard Koen Broeckx, Gerlach Corne Pieter Maria Emmen, Oscar Jan Deurloo, Lukas Leyten
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Patent number: 7397196Abstract: A driver for HID lamps includes four switches and generates a constant DC-current that is commutated at a low frequency. The driver includes a filter capacitor. The occurrence of peak currents due to the charging or discharging of the filter capacitor is prevented by driving one of the switches at a high frequency immediately after commutation.Type: GrantFiled: March 24, 2005Date of Patent: July 8, 2008Assignee: Koninklijke Philips Electronics N.V.Inventors: Lukas Leyten, Christofher Daniel Charles Hooijer, Roy Hendrik Anna Maria Van Zundert, Gerlach Corne Pieter Maria Emmen
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Patent number: 7315206Abstract: A traveling-wave amplifier includes amplifiers coupled anti-parallel to transmission lines. Phase(s) of the amplifiers provide phase matching, which may additionally or alternately be provided by couplers or spatial offset of the amplifiers and couplers. The traveling-wave amplifier provides compensation for the losses of the transmission lines, amplification of the signals and isolation between input and output by coupling the amplifiers to the transmission lines anti-parallel.Type: GrantFiled: October 28, 2003Date of Patent: January 1, 2008Assignee: NXP B.V.Inventors: Lukas Leyten, Jozef Reinerus Maria Bergervoet
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Publication number: 20070222392Abstract: A driver for HID lamps comprises four switches and generates a constant DC current that is commutated at a low frequency. The driver comprises a filter capacitor. The occurrence of peak currents due to the charging or discharging of the filter capacitor is prevented by driving one of the switches at a high frequency immediately after commutation.Type: ApplicationFiled: March 24, 2005Publication date: September 27, 2007Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Lukas Leyten, Christofher Hooijer, Roy Van Zundert, Gerlach Emmen
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Patent number: 7221236Abstract: A waveguide comprises a longitudinal first conductor (110) located in an inner space of a box-shaped longitudinal shield conductor which is provided with a slot (122) defining a sliding support for a substantially plate-shaped coupler (300). The shield conductor (120) is provided with flanges (125, 126) extending substantially parallel to each other on opposite sides of the slot (122). A coupling conductor portion (322) faces the first conductor (110).Type: GrantFiled: March 19, 2003Date of Patent: May 22, 2007Assignee: Koninklijke Philips Electronics N.V.Inventors: Martin Dieter Liess, Lukas Leyten, Diego Sommavilla
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Patent number: 7206555Abstract: The invention relates to an antenna diversity comprising a first and a second antenna element where the first antenna element is operated in an active mode whereas the second antenna element is operated in a parasitic mode. The present invention minimizes the amount of mismatch while still being able to maximize a predetermined signal quality criterion for the electromagnetic signal on the active path between the first antenna element and the transceiver. By providing a pre-selection unit 130 as well as a selection unit 140 for selecting an optimal adjustable impedance connected to the second antenna ensuring that the amount of said mismatch is below a predetermined threshold value and that simultaneously a predetermined quality criterion for the transceived electromagnetic signal is fulfilled best within the range determined by the allowable mismatch. The invention further relates to a method for operating such an antenna diversity.Type: GrantFiled: June 27, 2003Date of Patent: April 17, 2007Assignee: Koninklijke Philips Electronics N.V.Inventors: Kevin Robert Boyle, Wilhelmus Mathias Clemens Dolmans, Lukas Leyten, Peter Johan Massey
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Publication number: 20060083332Abstract: An apparatus simultaneously transmits at least a first signal and a second signal. Each one of those signals comprises a data sequence and a training sequence. The apparatus is arranged to simultaneously transmit a training sequence of the first signal and a data sequence of the second signal for improving the spectral efficiency and thus the data throughput.Type: ApplicationFiled: December 1, 2003Publication date: April 20, 2006Applicant: Koninklijke Philips Electronics, N.V.Inventors: Wilhelmus Dolmans, Bertrand Vandewiele, Lukas Leyten
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Publication number: 20060057975Abstract: The invention relates to an antenna diversity comprising a first and a second antenna element where the first antenna element is operated in an active mode whereas the second antenna element is operated in a parasitic mode. The present invention minimizes the amount of mismatch while still being able to maximize a predetermined signal quality criterion for the electromagnetic signal on the active path between the first antenna element and the transceiver. By providing a pre-selection unit 130 as well as a selection unit 140 for selecting an optimal adjustable impedance connected to the second antenna ensuring that the amount of said mismatch is below a predetermined threshold value and that simultaneously a predetermined quality criterion for the transceived electromagnetic signal is fulfilled best within the range determined by the allowable mismatch. The invention further relates to a method for operating such an antenna diversity.Type: ApplicationFiled: June 27, 2003Publication date: March 16, 2006Inventors: Kevin Boyle, Wilhelmus Dolmans, Lukas Leyten, Peter Massey
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Publication number: 20060055464Abstract: The invention relates to a travelling-wave amplifier comprising amplifiers and transmission lines. The travelling-wave amplifier provides compensation for the losses of the transmission lines, amplification of the signals and isolation between input and output by coupling the amplifiers to the transmission lines anti-parallel.Type: ApplicationFiled: October 28, 2003Publication date: March 16, 2006Applicant: KONINKLIJKE PHILIPS ELECTRONICS , N.V.Inventors: Lukas Leyten, Jozef Bergervoet
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Patent number: 6917338Abstract: The invention relates to an antenna diversity comprising a first and a second antenna element one of which is operated in an active mode whereas the other one of which is operated in a parasitic mode. It is the object of the present invention to further minimize the amount of mismatch by still being able to maximize a predetermined signal quality criterion for the electromagnetic signal on the active path between the active antenna and the transceiver. This object is solved by a switching unit 120 for either operating the first antenna element in the parasitic mode and simultaneously operating the second antenna element in the active mode or vice versa and by providing a pre-selection unit 130 as well as a selection unit 140 for selecting an optimal configuration for the antenna diversity ensuring that the amount of said mismatch is below a predetermined threshold value and that simultaneously a predetermined quality criterion for the transceived electromagnetic signal is fulfilled best.Type: GrantFiled: November 26, 2002Date of Patent: July 12, 2005Assignee: Koninklijke Philips Electronics N.V.Inventors: Jozef Reinerus Maria Bergervoet, Wilhelmus Mathias Clemens Dolmans, Lukas Leyten
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Publication number: 20050128024Abstract: A waveguide comprises a longitudinal first conductor (110) located in an inner space of a box-shaped longitudinal shield conductor which is provided with a slot (122) defining a sliding support for a substantially plate-shaped coupler (300). The shield conductor (120) is provided with flanges (125, 126) extending substantially parallel to each other on opposite sides of the slot (122). A coupling conductor portion (322) faces the first conductor (110).Type: ApplicationFiled: March 19, 2003Publication date: June 16, 2005Inventors: Martin Liess, Lukas Leyten, Diego Sommavilla
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Publication number: 20050064824Abstract: The invention relates to an antenna diversity comprising a first and a second antenna element one of which is operated in an active mode whereas the other one of which is operated in a parasitic mode. It is the object of the present invention to further minimize the amount of mismatch by still being able to maximize a predetermined signal quality criterion for the electromagnetic signal on the active path between the active antenna and the transceiver. This object is solved by a switching unit 120 for either operating the first antenna element in the parasitic mode and simultaneously operating the second antenna element in the active mode or vice versa and by providing a pre-selection unit 130 as well as a selection unit 140 for selecting an optimal configuration for the antenna diversity ensuring that the amount of said mismatch is below a predetermined threshold value and that simultaneously a predetermined quality criterion for the transceived electromagnetic signal is fulfilled best.Type: ApplicationFiled: November 26, 2002Publication date: March 24, 2005Inventors: Jozef Reinerus Maria Bergervoet, Wilhelmus Dolmans, Lukas Leyten
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Patent number: 6850785Abstract: A portable communication device has an antenna configuration that allows to form various different antenna directivity configurations. In particular, a control device discriminates between a transmitting state and a receiving state of the communication device. As based thereon, it effects various non-uniform selection patterns among the directivity configurations.Type: GrantFiled: April 5, 1999Date of Patent: February 1, 2005Assignee: Koninklijke Philips Electronics N.V.Inventors: Lukas Leyten, Peter J. Massey, David Duperray, Steven J. W. Van Lerberghe, Cyrille M. J. M. Amar
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Patent number: 6784836Abstract: In an electronic circuit for forming an antenna pattern, the antenna signals having the required phase shift are generated by means of two phase-locked loops which have a common reference signal. A control current, which is added at the output node of the charge pump 26 and/or 27, is used to control the phase shift of the antenna signals. This allows the implementation of the phase shift operation in the analog domain, which decreases the cost of a corresponding consumer device, such as a car-radio or a mobile communication system.Type: GrantFiled: April 24, 2002Date of Patent: August 31, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Wolfdietrich Georg Kasperkovitz, Lukas Leyten, Nunziatina Mezzasalma, Cicero Silveira Vaucher
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Publication number: 20030006933Abstract: In an electronic circuit for forming an antenna pattern the antenna signals having the required phase shift are generated by means of two phase locked loops which have a common reference signal. A control current which is added at the output node of the charge pump 26 and/or 27 is used to control the phase shift of the antenna signals. This allows the implementation of the phase shift operation in the analogue domain, which decreases the cost of a corresponding consumer device, such as a car-radio or a mobile communication system.Type: ApplicationFiled: April 24, 2002Publication date: January 9, 2003Inventors: Wolfdietrich Georg Kasperkovitz, Lukas Leyten, Nunziatina Mezzasalma, Cicero Silveira Vaucher
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Patent number: 6466105Abstract: The invention describes a filter arrangement as well as an electronic component, each with a bulk acoustic wave resonator unit which is present on a carrier substrate (1). A reflection element (2) is provided between the carrier substrate (1) and the bulk acoustic wave resonator unit for the purpose of acoustic insulation of the generated oscillations. This reflection element (2) may consist either of several layers of alternately high and low impedance or, if the acoustically reflecting substance has a sufficiently low impedance, of a single layer. In addition, a mobile telephone device, a transmitter, a receiver, and a wireless data transmission system as well as a method of manufacturing an electronic component are described.Type: GrantFiled: July 5, 2000Date of Patent: October 15, 2002Assignees: Koninklijke Philips Electronics N.V., U.S. Philips CorporationInventors: Hans-Peter Löbl, Mareike Klee, Lukas Leyten
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Patent number: 6379987Abstract: A method of manufacturing a hybrid integrated circuit comprising a semiconductor element (1) and a piezoelectric filter (2), which are situated next to each other and connected to a carrier substrate (3). The semiconductor element comprises semiconductor regions (5, 6) which are formed in a silicon layer (13, 28); the piezoelectric filter comprises an acoustic resonator (8, 9, 10) which is situated on an acoustic reflector layer (7), which acoustic resonator comprises a layer of piezoelectric material (8), a first electrode (9) situated between the layer of piezoelectric material and the acoustic reflector layer, and a second electrode (10) which is situated on the opposite side of the piezoelectric layer and faces the first electrode. In the method, the semiconductor element is formed on the first side (11) of a silicon wafer (12, 25).Type: GrantFiled: February 21, 2001Date of Patent: April 30, 2002Assignee: U.S. Philips CorporationInventors: Ronald Dekker, Wilhelmus Mathias Clemens Dolmans, Lukas Leyten, Henricus Godefridus Rafael Maas
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Publication number: 20020031855Abstract: A method of manufacturing a hybrid integrated circuit comprising a semiconductor element (1) and a piezoelectric filter (2), which are situated next to each other and connected to a carrier substrate (3). The semiconductor element comprises semiconductor regions (5, 6) which are formed in a silicon layer (13, 28); the piezoelectric filter comprises an acoustic resonator (8, 9, 10) which is situated on an acoustic reflector layer (7), which acoustic resonator comprises a layer of piezoelectric material (8), a first electrode (9) situated between the layer of piezoelectric material and the acoustic reflector layer, and a second electrode (10) which is situated on the opposite side of the piezoelectric layer and faces the first electrode. In the method, the semiconductor element is formed on the first side (11) of a silicon wafer (12, 25).Type: ApplicationFiled: February 21, 2001Publication date: March 14, 2002Inventors: Ronald Dekker, Wilhelmus Mathias Clemens Dolmans, Lukas Leyten, Henricus Godefridus Rafael Maas
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Patent number: 6342820Abstract: A balanced oscillator comprises a frequency selective circuit and a balanced active circuit coupled with the frequency selective circuit. The frequency selective circuit includes a short circuited quarter-wave paired line. A cost effective short circuited quarter-wave paired line can be U-shaped to take up only a small space and can be integrated easily on a dielectric, especially glass. The balanced active circuit comprises a cross coupled differential pair of transistors. The balanced oscillator can be tuned in a number of different ways.Type: GrantFiled: June 14, 2000Date of Patent: January 29, 2002Assignee: U.S. Philips CorporationInventors: Lukas Leyten, Antonius G. Wagemans