Patents by Inventor Stefan Koehler

Stefan Koehler 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).

  • Publication number: 20100048157
    Abstract: A receiver for receiving a first usable frequency band and a second usable frequency band includes a band-pass filter device for filtering one or several receiving signals, a mixer device for converting the combination signal or the first band-pass filter signal and the second band-pass filter signal with a local oscillator signal, for obtaining a first intermediate frequency signal and a second intermediate frequency signal, and an intermediate frequency filter device for filtering the first intermediate frequency signal and the second intermediate frequency signal. Further, the receiver includes an analog/digital converter device for analog/digital converting the first filtered intermediate frequency signal and the second filtered intermediate frequency signal by using a single sampling frequency for obtaining a first digitized intermediate frequency signal and a second digitized intermediate frequency signal.
    Type: Application
    Filed: June 25, 2007
    Publication date: February 25, 2010
    Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANDEWANDTEN FORSCHUNG E.V.
    Inventors: Alfonso Carrera, Stefan Koehler, Guenter Rohmer
  • Patent number: 7653166
    Abstract: A synchronization device for determining a position of a synchronization signal in a receive signal, the synchronization signal being based on a coarse synchronization signal and a fine synchronization signal, includes a signal processing means configured to determine, based on the coarse synchronization signal, a section of the receive signal in which is located the fine synchronization signal, and to determine in the section of the receive signal, based on the fine synchronization signal, the position of the synchronization signal in the receive signal for a synchronization.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: January 26, 2010
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Carmen Wagner, Stefan Koehler, Holger Stadali, Guenter Hofmann, Marco Breiling
  • Patent number: 7557902
    Abstract: A projection objective 1 for short wavelengths, in particular for wavelengths ?<157 nm is provided with a number of mirrors [M1, M2, M3, M4, M5 and M6] that are arranged positioned precisely in relation to an optical axis 5. The mirrors [M1, M2, M3, M4, M5 and M6] have multilayer coatings. At least two different mirror materials are provided which differ in the rise in the coefficient of thermal expansion as a function of temperature in the region of the zero crossing of the coefficients of thermal expansion, in particular in the sign of the size.
    Type: Grant
    Filed: September 27, 2003
    Date of Patent: July 7, 2009
    Assignee: Carl Zeiss SMT AG
    Inventors: Udo Dinger, Frank Eisert, Stefan Koehler, Andreas Ochse, Johannes Zellner, Martin Lowisch, Timo Laufer
  • Patent number: 7529534
    Abstract: A signal converter for converting a start signal into an end signal includes means for copying the start signal to obtain a plurality of copied start signals, wherein a copied start signal may be fed into a processing branch as a branch signal. Further, the signal converter includes a first branch processing means in a first processing branch for processing a first branch signal according to a first processing regulation to obtain a first processed branch signal. Further, the signal converter includes a second branch processing means in a second processing branch for processing a second branch signal according to a second processing regulation to obtain a second processed branch signal, wherein the second processing regulation is different from the first processing regulation and wherein the first processing regulation and the second processing regulation are implemented to cause a low-pass polyphase filtering of the copied start signals.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: May 5, 2009
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventor: Stefan Koehler
  • Patent number: 7237529
    Abstract: A throttle valve positioning device is disclosed, The device has a housing with a bearing for a throttle valve shaft and a throttle valve support, within which a throttle valve pivots which sits on the throttle valve shaft, running into a shaft passage in the support. With the device, air leakage may be avoided, such that the periphery of the throttle valve is arranged at a separation from a passage for the throttle valve shaft in. the throttle valve support.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: July 3, 2007
    Assignee: Siemens AG
    Inventors: Thomas Hannewald, Stefan Koehler
  • Publication number: 20070035814
    Abstract: A projection objective 1 for short wavelengths, in particular for wavelengths ?<157 nm is provided with a number of mirrors M1, M2, M3, M4, M5 and M6 that are arranged positioned precisely in relation to an optical axis 5. The mirrors M1, M2, M3, M4, M5 and M6 have multilayer coatings. At least two different mirror materials are provided which differ in the rise in the coefficient of thermal expansion as a function of temperature in the region of the zero crossing of the coefficients of thermal expansion, in particular in the sign of the size.
    Type: Application
    Filed: September 27, 2003
    Publication date: February 15, 2007
    Inventors: Udo Dinger, Frank Eisert, Stefan Koehler, Andreas Ochse, Johannes Zellner, Martin Lowisch, Timo Laufer
  • Patent number: 7139582
    Abstract: In a method for the continuous real time tracking of the position of at least one mobile object in a defined multidimensional space, at least one mobile transmitter module is attached to at least one mobile object and the signals from the at least one module are received by a stationary receiving and signal processing network and then centrally processed. The signals emitted by each transmitter module are electromagnetic waves sent within a frequency band range using time division multiplexing techniques.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: November 21, 2006
    Assignee: Fraunhofer-Gesellschaft zur Förderlung der Angewandten Forschung E.V.
    Inventors: Sylvia Couronné, Marcus Bliesze, Günter Hofmann, Ernst Eberlein, Stefan Koehler, Thomas Von Der Grün, Marco Breiling, Reiner Retkowski
  • Patent number: 7114486
    Abstract: The dividing unit comprises a metal throttle valve shaft and of a plastic throttle valve. The throttle valve shaft is mounted so that it centrally passes through the throttle valve and the maximum acute angle alpha between the longitudinal axis of the throttle valve shaft and another longitudinal axis of the throttle valve ranges from 5 DEG to 25 DEG.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: October 3, 2006
    Assignee: Siemens AG
    Inventors: Thomas Hannewald, Stefan Koehler, Roland Lindner
  • Publication number: 20060178759
    Abstract: A signal converter for converting a start signal into an end signal includes means for copying the start signal to obtain a plurality of copied start signals, wherein a copied start signal may be fed into a processing branch as a branch signal. Further, the signal converter includes a first branch processing means in a first processing branch for processing a first branch signal according to a first processing regulation to obtain a first processed branch signal. Further, the signal converter includes a second branch processing means in a second processing branch for processing a second branch signal according to a second processing regulation to obtain a second processed branch signal, wherein the second processing regulation is different from the first processing regulation and wherein the first processing regulation and the second processing regulation are implemented to cause a low-pass polyphase filtering of the copied start signals.
    Type: Application
    Filed: December 13, 2005
    Publication date: August 10, 2006
    Inventor: Stefan Koehler
  • Publication number: 20060165200
    Abstract: A synchronization device for determining a position of a synchronization signal in a receive signal, the synchronization signal being based on a coarse synchronization signal and a fine synchronization signal, includes a signal processing means configured to determine, based on the coarse synchronization signal, a section of the receive signal in which is located the fine synchronization signal, and to determine in the section of the receive signal, based on the fine synchronization signal, the position of the synchronization signal in the receive signal for a synchronization.
    Type: Application
    Filed: December 12, 2005
    Publication date: July 27, 2006
    Inventors: Carmen Wagner, Stefan Koehler, Holger Stadali, Guenter Hofmann, Marco Breiling
  • Patent number: 7039421
    Abstract: A system for determining the position of an object, comprising a reference transmitter device (202) disposed in a fixed position, the reference transmitter device (202) having a reference time supplying means for supplying a reference time signal that indicates a reference time, at least two transmitter/receiver devices (302) disposed in fixed positions with respect to each other and to the reference transmitter device (202), each transmitter/receiver device (302) having a time supplying means for supplying a time signal indicating a time, a receiver means for receiving the reference time signal from the reference transmitter device (202) and a synchronization means for processing the time signal and the reference time signal, as well as a position determining device (502) on the object for determining the position of the object.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: May 2, 2006
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Sylvie Couronne, Stefan Koehler, Guenter Rohmer, Thomas Von Der Gruen, Ingmar Bretz, Heinz Gerhaeuser
  • Patent number: 7034898
    Abstract: The receiving device contains at least two television channel selection devices to convert high-frequency signals into intermediate-frequency signals, at least two video demodulation devices to convert the intermediate-frequency signals into picture signals, at least two audio demodulation devices to convert the intermediate-frequency signals into audio signals, and one intermediate-frequency switching device to switch the audio- and video-demodulation devices to the television channel selection devices.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: April 25, 2006
    Assignee: Harman Becker Automotive Systems GmbH
    Inventors: Michael Zahm, Stefan Koehler, Erich A. Geiger, Hermann Link
  • Publication number: 20060048747
    Abstract: The invention relates to a throttle valve positioning device, comprising a housing (12) with a bearing for a throttle valve shaft (20) and a throttle valve support (26), within which a throttle valve (24) pivots which sits on the throttle valve shaft (20), running into a shaft passage (44) in the support (26). According to the invention, air leakage may be avoided, whereby the periphery (34) of the throttle valve (24) is arranged at a separation from a passage (44) for the throttle valve shaft (20) in the throttle valve support (26).
    Type: Application
    Filed: May 28, 2004
    Publication date: March 9, 2006
    Applicant: Siemens Aktiengesellschaft
    Inventors: Thomas Hannewald, Stefan Koehler
  • Publication number: 20060027210
    Abstract: The dividing unit comprises a metal throttle valve shaft and of a plastic throttle valve. The throttle valve shaft is mounted so that it centrally passes through the throttle valve and the maximum acute angle alpha between the longitudinal axis of the throttle valve shaft and another longitudinal axis of the throttle valve ranges from 5 DEG to 25 DEG.
    Type: Application
    Filed: August 30, 2005
    Publication date: February 9, 2006
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Thomas Hannewald, Stefan Koehler, Roland Lindner
  • Patent number: 6926252
    Abstract: A drive device enabling a movable element to be driven by an actuator via a gear system comprising a motor pinion gear, an intermediate gear and a partial toothed gear. An aim of the invention is to create a particularly compact device which can capture the kinetic energy of the actuator in a particularly reliable manner. The intermediate gear comprises a pinion and a toothed gear. The pinion and toothed gear are connected via a ratchet in such a way that the opinion which is rotationally fixed to the ratchet can be rotated counter to the toothed wheel in a manner similar to that of a locking ratchet wheel.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: August 9, 2005
    Assignee: Siemens Aktiengesellschaft
    Inventors: Joerg Hildebrandt, Stefan Koehler
  • Publication number: 20040171388
    Abstract: A method for the continuous real time tracking of the position of at least one mobile object in a defined multidimensional space comprising at least one mobile transmitter module which is attached to at least one mobile object, the signals from said module being received by a stationary receiving and signal processing network and then centrally processed. The signals emitted by the transmitter module are electromagnetic waves sent within a frequency band range using time division multiplex techniques. Due to the fact that the frequency band is used as a single channel for the purpose of maximizing the accuracy with which a position is detected, and due also to the fact that the communication process between the transmitters (Sp, Sb) and the receivers (E1, . . .
    Type: Application
    Filed: October 27, 2003
    Publication date: September 2, 2004
    Inventors: Sylvia Couronne, Marcus Bliesze, Gunter Hofmann, Ernst Eberlein, Stefan Koehler, Thomas Von Der Grun, Marco Breiling, Reiner Retkowski
  • Publication number: 20040149261
    Abstract: A drive device enabling a movable element to be driven by an actuator via a gear system comprising a motor pinion gear, an intermediate gear and a partial toothed gear. An aim of the invention is to create a particularly compact device which can capture the kinetic energy of the actuator in a particularly reliable manner. The intermediate gear comprises a pinion and a toothed gear. The pinion and toothed gear are connected via a ratchet in such a way that the opinion which is rotationally fixed to the ratchet can be rotated counter to the toothed wheel in a manner similar to that of a locking ratchet wheel.
    Type: Application
    Filed: December 22, 2003
    Publication date: August 5, 2004
    Applicant: SIEMENS AG
    Inventors: Joerg Hildebrandt, Stefan Koehler
  • Publication number: 20040012524
    Abstract: A system for determining the position of an object, comprising a reference transmitter device (202) disposed in a fixed position, the reference transmitter device (202) having a reference time supplying means for supplying a reference time signal that indicates a reference time, at least two transmitter/receiver devices (302) disposed in fixed positions with respect to each other and to the reference transmitter device (202), each transmitter/receiver device (302) having a time supplying means for supplying a time signal indicating a time, a receiver means for receiving the reference time signal from the reference transmitter device (202) and a synchronization means for processing the time signal and the reference time signal, as well as a position determining device (502) on the object for determining the position of the object.
    Type: Application
    Filed: June 24, 2003
    Publication date: January 22, 2004
    Inventors: Sylvie Couronne, Stefan Koehler, Guenter Rohmer, Thomas Von Der Gruen, Ingmar Bretz, Heinz Gerhaeuser