Patents by Inventor Ralf Hartmann

Ralf Hartmann 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: 7537519
    Abstract: A transfer-assistance system for controlling a crop discharge flow from an agricultural harvesting machine has a transfer device provided in an agricultural working machine for carrying out a crop discharge flow. The system includes a transfer device cover assigned to the transfer device on one end, a transport device to which a crop is transported, a computing unit for determining a relative position and for controlling the crop discharge flow and a driving guidance system.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: May 26, 2009
    Assignee: CLAAS Selbstfahrende Erntemaschinen GmbH
    Inventors: Jochen Huster, Ralf Hartmann, Nobert Diekhans
  • Publication number: 20090021363
    Abstract: Disclosed is a tire pressure monitoring system for motor vehicles, including a central unit (2, 7) with at least one trigger module (4), which is integrated into the central unit or connects through control lines (3) to the central unit, and with at least one tire module (6) arranged in a vehicle wheel (5), with the tire module being in communication with the central unit and the trigger module by means of wireless transmission technology, and with the tire pressure monitoring system including fewer trigger modules than tire modules.
    Type: Application
    Filed: March 23, 2006
    Publication date: January 22, 2009
    Applicant: Continental Teves AG & Co. OHG
    Inventors: Andreas Heise, Jens Bachon, Stefan Kammann, Ralf Hartmann, Wolfgang Erler, Markus Neumann, Marco Bos, Peter Sager
  • Patent number: 7434669
    Abstract: A hydraulic vehicle brake equipped with a parking brake device, in particular for motor vehicles, including a brake housing in which a hydraulic service pressure chamber is delimited by a brake piston, wherein the parking brake device acts on the brake piston and, in the applied condition, can be locked by a locking device, and an energy accumulator cooperating with the brake piston is equipped with at least one integrated spring element. In order to realize a simple and low-cost parking brake function that complies with legal requirements, according to the invention, the parking brake device is operable by a pressure that is introduced into the service pressure chamber and enables charging the energy accumulator.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: October 14, 2008
    Assignee: Continental Teves AG & Co. oHG
    Inventors: Georg Halasy-Wimmer, Lothar Schiel, Rolf Weiler, Jürgen Balz, Peter Schack, Thomas Bauer, Stefan A. Drumm, Andreas Heise, Joachim Scholer, Stefan Johannes Schmitt, Andreas Pohlmann, Thomas Winkler, Volker Knop, Jörn Schriefer, Ralf Hartmann, Karsten Schille, Johannes Görlach, Peter Volz
  • Publication number: 20070277602
    Abstract: Disclosed is a tire pressure-monitoring device for a motor vehicle, having at least one control unit (6) and/or at least one central box (10) being connected to the wheel house transceivers (4) arranged in the area of the wheel houses by way of wheel speed sensor and control conduits (5) or by way of wheel speed sensor conduits (11) and actuating conduits (13), which transceivers are appropriate for the wireless unidirectional or bidirectional transmission of information and energy to a transponder (1) arranged in the wheel or tire proximate the wheel house.
    Type: Application
    Filed: February 11, 2005
    Publication date: December 6, 2007
    Inventors: Andreas Heise, Artur Otto, Jens Bachon, Ralf Hartmann
  • Patent number: 7127666
    Abstract: An apparatus and method for executing a Viterbi algorithm includes initial state registers, at least one transition register, and an adder/subtracter network. Furthermore, evaluation units and a selection unit are provided for switching the apparatus between a first operating mode and a second operating mode. The selection unit can select different evaluation units depending on the selected operating mode.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: October 24, 2006
    Assignee: Infineon Technologies AG
    Inventors: Peter Aymar, Peter Bohnhoff, Ralf Hartmann
  • Patent number: 7117414
    Abstract: An identifier is provided for an integrated circuit with a memory composed of a multiplicity of memory cells. The circuit has a manufacture-related memory cell defect pattern formed of defective memory cells. The method of identifying the integrated circuit utilizes the memory cell defect pattern to generate a circuit identification number for identifying the integrated circuit.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: October 3, 2006
    Assignee: Infineon Technologies AG
    Inventor: Ralf Hartmann
  • Publication number: 20060094487
    Abstract: A transfer-assistance system for controlling a crop discharge flow from an agricultural harvesting machine has a transfer device provided in an agricultural working machine and carrying out a crop discharge flow; a transfer device cover assigned to said transfer device on one end; a transport device to which a crop is transported; means for determination of a relative position; means for controlling the crop discharge flow; and a driving guidance system.
    Type: Application
    Filed: October 3, 2005
    Publication date: May 4, 2006
    Inventors: Jochen Huster, Ralf Hartmann, Nobert Diekhans
  • Publication number: 20050258682
    Abstract: The present invention relates to a hydraulic vehicle brake equipped with a parking brake device, in particular for motor vehicles, including a brake housing in which a hydraulic service pressure chamber is delimited by a brake piston, wherein the parking brake device acts on the brake piston and, in the applied condition, can be locked by means of a locking device, and an energy accumulator cooperating with the brake piston is equipped with at least one integrated spring element. In order to realize a simple and low-cost parking brake function that complies with legal requirements, according to the invention, the parking brake device is operable by a pressure that is introduced into the service pressure chamber and enables charging the energy accumulator.
    Type: Application
    Filed: September 17, 2003
    Publication date: November 24, 2005
    Inventors: Georg Halasy-Wimmer, Lothar Schiel, Rolf Weiler, Jurgen Balz, Peter Schack, Thomas Bauer, Stefan Drumm, Andreas Heise, Joachim Scholer, Stefan Schmitt, Andreas Pohlmann, Thomas Winkler, Volker Knop, Jorn Schriefer, Ralf Hartmann, Karsten Schille, Johannes Gorlach, Peter Volz
  • Patent number: 6954507
    Abstract: In a radio receiver, an equalizer generates reliability information in the form of soft decision information indicating probabilities that a data symbol received by the radio receiver is based on a specific transmitted value. A bit error rate estimator obtains bit error rate information regarding the bit error rate of the received signal, corresponding to the received data symbols, by evaluating the reliability information.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: October 11, 2005
    Assignee: Infineon Technologies AG
    Inventors: Peter Bohnhoff, Ralf Hartmann
  • Publication number: 20050089115
    Abstract: In order to compensate for a frequency offset or a change in the phase of the transmission channel over time during mobile radio transmission of data symbols, the data symbols are transmitted by means of carrier-frequency, modulated data bursts. Sample values of the received signal, which are known in advance and correspond to first and second symbols, are evaluated in order to estimate the frequency offset or the change in the phase of the transmission channel over time. These first and second symbols are transmitted with a defined phase angle by means of the data burst, and are arranged separated from one another in the data burst. Edge symbols in a data burst are advantageously used as first and second symbols, or as a symbol pair, for estimation.
    Type: Application
    Filed: September 7, 2004
    Publication date: April 28, 2005
    Inventors: Ralf Hartmann, Martin Kruger, Hartmut Wilhelm
  • Patent number: 6782060
    Abstract: An equalizer of a radio receiver for generating reliability information (q) that specifies probabilities of a received data symbol (z) being based on a particular transmitted value. The reliability information (q) is determined for each received data symbol (z) by evaluating trellis state transitions through use of a particular metric, both trellis-based symbols and decision-feedback symbols being evaluated. The decision-feedback symbols used are state-independent symbols that have previously been decided by means of a hard decision.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: August 24, 2004
    Assignee: Infineon Technologies AG
    Inventors: Ralf Hartmann, Peter Bohnhoff
  • Patent number: 6613394
    Abstract: Described is a method of treating or coating homogeneously at least a portion of the surface of a material selected from metallic materials having a thickness of less than 100 &mgr;m and/or polymeric materials. The method of the present invention comprises exposing at least a portion of the surface of the material to an atmospheric plasma generated by an indirect plasmatron. In the method of the present invention, the surface of the material may undergo at least one of an increase in surface tension, a surface grafting, a surface cleaning and a surface sterilization.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: September 2, 2003
    Assignee: Wolff Walsrode AG
    Inventors: Christian Kuckertz, Sven Jacobsen, Rainer Brandt, Klaus Landes, Ralf Hartmann
  • Patent number: 6601422
    Abstract: A rolling train for structural shapes in which at least on one side of a train having a plurality of mill stands, e.g. universal mill stands, a detector is provided for the actual profile of the rolled product. The actual profile is compared with a setpoint profile and corrected setpoint values for the operating parameters of the individual stands are generated for a corrected subsequent rolling operation or even the same rolling operation, appropriately weighted for the contribution of the various stands to the rolling effect.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: August 5, 2003
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Ralf Hartmann, Detlef Breunung, Otmar Palzer, Hans-Jürgen Reismann
  • Patent number: 6540010
    Abstract: A device for hydraulic adjustment of rollers of strand guiding segments of a strand casting device has hydraulic cylinders which are separated by a piston with piston rod into a cylinder chamber and an annular cylinder chamber, respectively. The cylinder chambers can be connected by control members alternatingly and in opposite directions as well as simultaneously with a pressure source and a pressure sink, wherein on-off valves are provided as control members.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: April 1, 2003
    Assignee: SMS Schloemann-Siemag Aktiengesellschaft
    Inventors: Christian Geerkens, Ralf Hartmann, Berthold Hild, Meinhard Watzlaw
  • Publication number: 20020181621
    Abstract: In a radio receiver, an equalizer generates reliability information in the form of soft decision information indicating probabilities that a data symbol received by the radio receiver is based on a specific transmitted value. A bit error rate estimator obtains bit error rate information regarding the bit error rate of the received signal, corresponding to the received data symbols, by evaluating the reliability information.
    Type: Application
    Filed: March 11, 2002
    Publication date: December 5, 2002
    Inventors: Peter Bohnhoff, Ralf Hartmann
  • Publication number: 20020168815
    Abstract: An identifier is provided for an integrated circuit with a memory composed of a multiplicity of memory cells. The circuit has a manufacture-related memory cell defect pattern formed of defective memory cells. The method of identifying the integrated circuit utilizes the memory cell defect pattern to generate a circuit identification number for identifying the integrated circuit.
    Type: Application
    Filed: April 22, 2002
    Publication date: November 14, 2002
    Inventor: Ralf Hartmann
  • Publication number: 20020150175
    Abstract: An equalizer of a radio receiver for generating reliability information (q) that specifies probabilities of a received data symbol (z) being based on a particular transmitted value. The reliability information (q) is determined for each received data symbol (z) by evaluating trellis state transitions through use of a particular metric, both trellis-based symbols and decision-feedback symbols being evaluated. The decision-feedback symbols used are state-independent symbols that have previously been decided by means of a hard decision.
    Type: Application
    Filed: January 17, 2002
    Publication date: October 17, 2002
    Inventors: Ralf Hartmann, Peter Bohnhoff
  • Publication number: 20020112514
    Abstract: A rolling train for structural shapes in which at least on one side of a train having a plurality of mill stands, e.g. universal mill stands, a detector is provided for the actual profile of the rolled product. The actual profile is compared with a setpoint profile and corrected setpoint values for the operating parameters of the individual stands are generated for a corrected subsequent rolling operation or even the same rolling operation, appropriately weighted for the contribution of the various stands to the rolling effect.
    Type: Application
    Filed: February 11, 2002
    Publication date: August 22, 2002
    Applicant: SMS DEMAG AKTIENGESELLSCHAFT
    Inventors: Ralf Hartmann, Detlef Breunung, Otmar Palzer, Hans-Jurgen Reismann
  • Patent number: 6419995
    Abstract: Described is a process for the homogeneous surface activation of a material in web form, by means of plasma-treatment. The material in web form is selected from metallic materials in web form having a thickness of less than 100 &mgr;m, polymeric materials in web form and combinations thereof. The process involves treating homogeneously at least a portion of the surface of the material in web form, which is moved over at least one pair of rolls, with an atmospheric plasma, optionally in the presence of a process gas and/or a process aerosol. The atmospheric plasma is generated by an indirect plasmatron.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: July 16, 2002
    Assignee: Wolff Walsrode AG
    Inventors: Christian Kuckertz, Sven Jacobsen, Rainer Brandt, Klaus Landes, Ralf Hartmann
  • Patent number: 6396883
    Abstract: A method identifies a pulse sequence having known values and a known length in a signal. According to this method, the mathematical sign of the phase difference between samples of the signal is used to estimate whether the transmitted pulse is a 1 or a 0. Undersampling, carried out to a selectable extent, produces a relatively insensitive response to adjacent channel interference. The sum of the pulses in a window which is proportional to the length of the pulse sequence and to the extent of the undersampling is determined, with the pulse sequence being regarded as being identified at the point in time at which the sum of the pulses in this search window exceeds a threshold value.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: May 28, 2002
    Assignee: Infineon Technologies AG
    Inventors: Bin Yang, Ralf Hartmann