Patents by Inventor Josef Kreittmayr

Josef Kreittmayr 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).

  • Patent number: 9538606
    Abstract: Various embodiments may relate to an electronic ballast for operating at least a first and a second cascade of LEDs, wherein the first cascade of LEDs is designed in such a way that the first cascade of LEDs is not be bridged. In order to provide a target value for a series regulator arranged in series with the LED cascades, a resistance voltage divider is used, which is coupled between the coupling point of the LED cascade that is not bridged and of the LED cascade that is not bridged at one end and the second output connection of the rectifier at the other end.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: January 3, 2017
    Assignee: OSRAM GMBH
    Inventors: Klaus Fischer, Helmut Endres, Josef Kreittmayr
  • Patent number: 9510421
    Abstract: Various embodiments may relate to an electronic ballast for operating at least a first and a second cascade of LEDs, wherein the first cascade of LEDs is designed in such a way that the first cascade of LEDs is not be bridged. In order to provide a target value for a series regulator arranged in series with the LED cascades, a resistance voltage divider is used, which is coupled between the coupling point of the LED cascade that is not bridged and of the LED cascade that is not bridged at one end and the second output connection of the rectifier at the other end.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: November 29, 2016
    Assignee: OSRAM GMBH
    Inventors: Klaus Fischer, Helmut Endres, Josef Kreittmayr
  • Publication number: 20160183345
    Abstract: Various embodiments may relate to an electronic ballast for operating at least a first and a second cascade of LEDs, wherein the first cascade of LEDs is designed in such a way that the first cascade of LEDs is not be bridged. In order to provide a target value for a series regulator arranged in series with the LED cascades, a resistance voltage divider is used, which is coupled between the coupling point of the LED cascade that is not bridged and of the LED cascade that is not bridged at one end and the second output connection of the rectifier at the other end.
    Type: Application
    Filed: July 10, 2014
    Publication date: June 23, 2016
    Inventors: Klaus Fischer, Helmut Endres, Josef Kreittmayr
  • Patent number: 9326334
    Abstract: An electronic ballast for operating at least one first cascade of LEDs may include an input for coupling to an AC supply voltage, a rectifier that is coupled to the input, wherein the rectifier has an output having a first and a second output connection, a first unit that includes the first cascade of LEDs, wherein the first unit is coupled to the first output connection of the rectifier, a series circuit including an inphase regulator and a shunt resistor, wherein the series circuit is coupled between the first unit and the second output connection of the rectifier, a setpoint value prescribing apparatus for the inphase regulator having an output that is coupled thereto, wherein the setpoint value prescribing apparatus provides a first setpoint value element at its output, and a second setpoint value element—superimposed on the first setpoint value element—for the inphase regulator.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: April 26, 2016
    Assignee: OSRAM GmbH
    Inventors: Klaus Fischer, Helmut Endres, Josef Kreittmayr
  • Patent number: 9100997
    Abstract: A method for transmitting control information from a control apparatus to an operating device for a light-emitting means may include a) modulating control information onto a supply line by means of the control apparatus during a modulation phase, wherein a switchable shunt of the device is connected between the first and second supply connections; b) decoding the control information in a decoder of the device; b1) activating the demodulation by the decoder when the absolute value for the voltage at the two supply connections falls below a first threshold value; and c) actuating a converter of the operating device in accordance with the decoded control information.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: August 4, 2015
    Assignee: OSRAM GmbH
    Inventors: Helmut Endres, Klaus Fischer, Josef Kreittmayr
  • Publication number: 20150048745
    Abstract: An electronic ballast for operating at least one first cascade of LEDs may include an input for coupling to an AC supply voltage, a rectifier that is coupled to the input, wherein the rectifier has an output having a first and a second output connection, a first unit that includes the first cascade of LEDs, wherein the first unit is coupled to the first output connection of the rectifier, a series circuit including an inphase regulator and a shunt resistor, wherein the series circuit is coupled between the first unit and the second output connection of the rectifier, a setpoint value prescribing apparatus for the inphase regulator having an output that is coupled thereto, wherein the setpoint value prescribing apparatus provides a first setpoint value element at its output, and a second setpoint value element—superimposed on the first setpoint value element—for the inphase regulator.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 19, 2015
    Inventors: Klaus Fischer, Helmut Endres, Josef Kreittmayr
  • Patent number: 8299647
    Abstract: A circuit arrangement with a switchable voltage supply for a control apparatus may include a DC voltage supply terminal; and an AC voltage supply terminal; a control apparatus including at least one input, an output and at least one supply terminal; three electronic switches, each having a control electrode, a reference electrode and a working electrode, wherein the reference electrode of the first electronic switch and of the second electronic switch is coupled to the first node; wherein the working electrode of the first electronic switch is coupled to the supply terminal of the control apparatus; wherein the control electrode of the first electronic switch is coupled to a reference potential, wherein at least one further load is coupled to the working electrode of the second electronic switch.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: October 30, 2012
    Assignee: Osram AG
    Inventors: Klaus Fischer, Josef Kreittmayr
  • Patent number: 8217589
    Abstract: A method is provided for driving at least one lamp unit, which is connected to an AC voltage power supply system. The method comprises modulating a control information item for the operation of the lamp unit onto the supplied AC voltage, decoding of the modulation received on the lamp unit side for reading the control information item and driving the light-emitting device in accordance with the control information item. Provision is made for a shunt to be produced in the line used for transmitting the control information item prior to or at the beginning of the modulation of the control information item. The disclosure also provides a lamp unit and a control device for implementing the method. The disclosure also provides a lighting system.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: July 10, 2012
    Assignees: Osram Gesellschaft mit beschrankter Haftung, Insta Elektro GmbH
    Inventors: Helmut Endres, Klaus Fischer, Friedhelm Holtz, Karl-Heinz Krause, Josef Kreittmayr, Friedhelm Wehlmann
  • Publication number: 20120062140
    Abstract: A method is provided for driving at least one lamp unit, which is connected to an AC voltage power supply system. The method comprises modulating a control information item for the operation of the lamp unit onto the supplied AC voltage, decoding of the modulation received on the lamp unit side for reading the control information item and driving the light-emitting device in accordance with the control information item. Provision is made for a shunt to be produced in the line used for transmitting the control information item prior to or at the beginning of the modulation of the control information item. The disclosure also provides a lamp unit and a control device for implementing the method. The disclosure also provides a lighting system.
    Type: Application
    Filed: January 22, 2010
    Publication date: March 15, 2012
    Inventors: Helmut Endres, Klaus Fischer, Friedhelm Holtz, Karl-Heinz Krause, Josef Kreittmayr, Friedhelm Wehlmann
  • Patent number: 8134301
    Abstract: The invention relates to an electronic ballast comprising a step-up converter for operating a discharge lamp. The electronic ballast is embodied in such a way as to disconnect a switching element (T1) in the step-up converter when a maximum current value of the current flowing through the switching element is reached. The electronic ballast comprises a holding circuit (HS) which is provided with a time-function element (R27, C23) and is embodied in such a way that it sets the time-function element (R27, C23) when the switching element (TI) is disconnected and reconnects the switching element after a time interval defined by the time-function element (R27, C23).
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: March 13, 2012
    Assignee: OSRAM AG
    Inventors: Klaus Fischer, Josef Kreittmayr
  • Publication number: 20110101882
    Abstract: A method is provided for driving at least one lamp unit, which is connected to an AC voltage power supply system. The method comprises modulating a control information item for the operation of the lamp unit onto the supplied AC voltage, decoding of the modulation received on the lamp unit side for reading the control information item and driving the light-emitting device in accordance with the control information item. Provision is made for a shunt to be produced in the line used for transmitting the control information item prior to or at the beginning of the modulation of the control information item. The disclosure also provides a lamp unit and a control device for implementing the method. The disclosure also provides a lighting system.
    Type: Application
    Filed: January 22, 2010
    Publication date: May 5, 2011
    Inventors: Helmut Endres, Klaus Fischer, Friedhelm Holtz, Karl-Heinz Krause, Josef Kreittmayr, Friedhelm Wehlmann
  • Patent number: 7911154
    Abstract: The invention relates to an electronic ballast comprising a converter which is used to operate a discharge lamp, for example, a low pressure discharge lamp, for selectively operating, in a direct manner, the supply network or a phase section dimmer. Jumps in the supply voltage are decoupled by a differential which is connected between at least one of the network lines and the reference potential of the ballast and transmitted to a control of the ballast, such that the control of the converter can distinguish between the operation on the phase section dimmer and on the network supply.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: March 22, 2011
    Assignee: Osram Gesellschaft mit Beschraenkter Haftung
    Inventors: Klaus Fischer, Josef Kreittmayr
  • Patent number: 7911148
    Abstract: The invention relates to a circuit arrangement which is used to operate a low pressure discharge lamp (EL), wherein the discharge lamp receives power. Said circuit arrangement is embodied in such a manner that power-determination components (C2a, L2a) of the circuit arrangement are embodied in a temperature-dependent manner such that the power consumption of the lamp is limited when the temperature rises. Capacitors (C2a) and throttles (L2a) can be embodied in a temperature-dependent manner in a control circuit (AS) of the circuit arrangement.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: March 22, 2011
    Assignee: OSRAM Gesellschaft mit beschraenkter Haftung
    Inventors: Klaus Fischer, Josef Kreittmayr
  • Publication number: 20100259103
    Abstract: A circuit arrangement with a switchable voltage supply for a control apparatus may include a DC voltage supply terminal; and an AC voltage supply terminal; a control apparatus including at least one input, an output and at least one supply terminal; three electronic switches, each having a control electrode, a reference electrode and a working electrode, wherein the reference electrode of the first electronic switch and of the second electronic switch is coupled to the first node; wherein the working electrode of the first electronic switch is coupled to the supply terminal of the control apparatus; wherein the control electrode of the first electronic switch is coupled to a reference potential, wherein at least one further load is coupled to the working electrode of the second electronic switch.
    Type: Application
    Filed: November 15, 2007
    Publication date: October 14, 2010
    Applicant: OSRAM Gesellschaft mit beschraenkter Haftung
    Inventors: Klaus Fischer, Josef Kreittmayr
  • Patent number: 7804253
    Abstract: An electronic ballast includes a step-up converter, which includes a storage inductor, a diode, an intermediate circuit condenser and a switch element. According to the invention, a current passing through the storage inductor is used in the form of an indicator of turnon and turnoff times of the step-up converter oscillates in a self-exciting manner.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: September 28, 2010
    Assignee: Osram Gesellschaft Mit Beschraenkter Haftung
    Inventors: Klaus Fischer, Josef Kreittmayr
  • Patent number: 7795949
    Abstract: A circuit including a voltage-controlled transistor to be switched. A first transistor is switched on, mediated by a control signal, and a first current flows through a series circuit and starts to subject a control input of the voltage-controlled transistor to charge reversal. The first current brings about a first potential shift at a connecting node. A second transistor is switched on by this first potential shift and a second current therefore flows through the switching path of the second transistor into the control input of the first transistor, which amplifies the first current. The increasing charge reversal of the control input of the voltage-controlled transistor brings about a second potential shift at the connecting node, the second transistor is switched off by this second potential shift, and the first transistor remains switched on, however, and holds the voltage-controlled transistor in its new switching state.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: September 14, 2010
    Assignee: OSRAM Gesellschaft mit beschränkter Haftung
    Inventors: Klaus Fischer, Josef Kreittmayr
  • Patent number: 7777423
    Abstract: An electronic ballast presenting an input capacitor (C) and including a step-up converter (LH, DH, SH, CH) for operating a load, for example a discharge lamp (CFL), on a phase control dimmer (DIM) having an integrated or parasite inductance (L). According to the invention, excessive voltage after connection with a phase control can be reduced by adjusting currents via of the step-up converter (LH, DH, SH, CH).
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: August 17, 2010
    Assignee: OSRAM Gesellschaft mit beschraenkter Haftung
    Inventors: Klaus Fischer, Josef Kreittmayr
  • Patent number: 7750583
    Abstract: The invention relates to an electronic ballast presenting an input capacitor and comprising and step-up chopper for operating a load, for example a discharge lamp, on a phase control dimmer having an integrated or parasite inductance. In such a way, the voltage overshooting on the input capacitor are reduced by active charge or discharge thereof.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: July 6, 2010
    Assignee: OSRAM Gesellschaft mit beschraenkter Haftung
    Inventors: Klaus Fischer, Josef Kreittmayr
  • Publication number: 20100013403
    Abstract: The invention relates to an electronic ballast comprising a step-up converter for operating a discharge lamp. The electronic ballast is embodied in such a way as to disconnect a switching element (T1) in the step-up converter when a maximum current value of the current flowing through the switching element is reached. The electronic ballast comprises a holding circuit (HS) which is provided with a time-function element (R27, C23) and is embodied in such a way that it sets the time-function element (R27, C23) when the switching element (TI) is disconnected and reconnects the switching element after a time interval defined by the time-function element (R27, C23).
    Type: Application
    Filed: February 12, 2007
    Publication date: January 21, 2010
    Applicant: OSRAM GESELLSCHAFT BESCHRÄNKTER HAFTUNG
    Inventors: Klaus Fischer, Josef Kreittmayr
  • Publication number: 20090302773
    Abstract: An electronic ballast presenting an input capacitor (C) and including a step-up converter (LH, DH, SH, CH) for operating a load, for example a discharge lamp (CFL), on a phase control dimmer (DIM) having an integrated or parasite inductance (L). According to the invention, excessive voltage after connection with a phase control can be reduced by adjusting currents via of the step-up converter (LH, DH, SH, CH).
    Type: Application
    Filed: March 22, 2006
    Publication date: December 10, 2009
    Inventors: Klaus Fischer, Josef Kreittmayr