Patents by Inventor Friedhelm Wehlmann

Friedhelm Wehlmann 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).

  • Method for transmitting control information from a control device to a lamp unit as well as a corresponding illuminating system, lamp unit and control device
    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
  • Method For Transmitting Control Information From A Control Device To A Lamp Unit As Well As A Corresponding Illuminating System, Lamp Unit And Control Device
    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
  • Method For Transmitting Control Information From A Control Device To A Lamp Unit As Well As A Corresponding Illuminating System, Lamp Unit And Control Device
    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