Patents by Inventor Stefan Keller

Stefan Keller 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: 7639689
    Abstract: In a method for exchanging packets of user data between a terminal (4a, 4b) of a first network (1) and a service provider (5a, 5b) of a second network (2), the first network (1) is connected to the second network (2) by a gateway (3) which has a unique connection (6a, 6b) to the service provider (5a, 5b), the terminal (4a, 4b) has a first address which is unique within the first network (1), and the terminal (4a, 4b) is configurable with a second address which uniquely identifies a particular service from the service provider (5a, 5b) and which is unique within the second network (2), the method comprising the steps of: allocating the first address being unique within the first network (1) to the terminal (4a, 4b), sending a first packet of user data containing the first and second address from the terminal (4a, 4b) to the service provider (5a, 5b) which identifies the first packet by the presence of the second address and extracts the first address from the first packet, and sending a second packet of user d
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: December 29, 2009
    Assignee: Alcatel
    Inventor: Stefan Keller-Tuberg
  • Publication number: 20090025885
    Abstract: The invention relates to an evaporation apparatus for depositing material on a vertically oriented substrate (10). The apparatus comprises at least one evaporation crucible (100) with the evaporation crucible (100) having an evaporation surface (120) for evaporating the material (300) wherein the evaporation surface is inclined at an inclination angle (?) in relation to the horizontal. The invention further provides a method for evaporating a substrate with the steps of providing a vertically oriented substrate (10); providing a crucible having an evaporation surface (120) for evaporating a material; evaporating the material on the evaporation surface (120) that is inclined at an inclination angle (?) in relation to the horizontal.
    Type: Application
    Filed: July 17, 2008
    Publication date: January 29, 2009
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Wolfgang BUSCHBECK, Michael KOENIG, Stefan KELLER, Stefan BANGERT
  • Publication number: 20090022634
    Abstract: A housing for a component of an exhaust system, in particular for an exhaust gas purification device, has an envelope that comprises a shrunk clamping portion for the component, a transition portion that adjoins the clamping portion in an axial direction, and a connecting portion that adjoins the transition portion in the axial direction. The diameter of the connecting portion is larger than that of the clamping portion. A method of producing the housing for the component includes providing a tubular envelope, and inserting the component into the envelope. A shrinking step is then carried out in the clamping portion which terminates spaced apart from ends of the envelope as viewed in the axial direction, whereas the axial ends of the envelope are not acted upon.
    Type: Application
    Filed: September 6, 2006
    Publication date: January 22, 2009
    Inventors: Erich Forster, Stefan Keller, Otto Steinhauser
  • Publication number: 20080274741
    Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.
    Type: Application
    Filed: June 9, 2008
    Publication date: November 6, 2008
    Inventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
  • Publication number: 20080257314
    Abstract: In a fuel system for an internal combustion engine, the fuel is pumped by a high-pressure fuel pump into a fuel pressure accumulator, from which it is supplied into at least one combustion chamber via at least one injector. A value is provided for the actual pressure in the fuel pressure accumulator. A pressure regulating device using which the fuel may be extracted from the fuel pressure accumulator is precontrolled using a precontrol signal, which is ascertained taking into account a setpoint pressure in the fuel pressure accumulator. A value for a fuel quantity flowing through the pressure regulating device is taken into account when ascertaining the precontrol signal.
    Type: Application
    Filed: October 20, 2005
    Publication date: October 23, 2008
    Inventors: Guenter Veit, Stefan Keller
  • Patent number: 7437218
    Abstract: A method and a device for controlling a functional unit of a motor vehicle are provided. In the method, a function sequence is implemented in a functional program. The functional program is verified here by a safety program, which is in turn monitored by a monitoring module. Like the safety program, the functional program has a modular structure. The monitoring of the safety program is accordingly implemented in multiple stages corresponding to the number of modules.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: October 14, 2008
    Assignee: Robert Bosch GmbH
    Inventors: Guido Funcke, Stefan Keller
  • Publication number: 20080240063
    Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.
    Type: Application
    Filed: June 9, 2008
    Publication date: October 2, 2008
    Inventors: Raymond Liao, Raghuvver Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
  • Publication number: 20080240071
    Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.
    Type: Application
    Filed: June 9, 2008
    Publication date: October 2, 2008
    Inventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
  • Publication number: 20080240042
    Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.
    Type: Application
    Filed: June 9, 2008
    Publication date: October 2, 2008
    Inventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
  • Publication number: 20080240069
    Abstract: A data communication system includes an access point and a plurality of stations each for exchanging wireless data communication messages with the access point. At least some of the messages are in a format that includes at least one message header and a plurality of data units. Each of the data units includes a respective data unit header and a respective data frame. Each data unit header identifies a respective one of the stations as a recipient to receive the respective data frame of the data unit.
    Type: Application
    Filed: June 9, 2008
    Publication date: October 2, 2008
    Inventors: Raymond Liao, Raghuveer Chereddy, Joerg Mueller, Stefan Keller, Kai Benjamins, Christoph Weiler
  • Patent number: 7418316
    Abstract: The present invention provides a method and a device for controlling operational sequences, in particular in a vehicle. In this context, a functional unit for forwarding and receiving data via at least one connecting unit is in contact with at least one bus system. Functional unit is monitored by a monitoring unit. The monitoring unit prevents the forwarding of data by the functional unit via the at least one bus system if the monitoring unit detects an error of the functional unit. In an error case, in order to prevent the forwarding of data by functional unit in a manner as simple as possible, yet one that is safe and reliable, an error signal is emitted by the monitoring unit, which error signal assumes different values as a function of whether an error of the functional unit has been recognized or not, and the error signal is applied to the at least one connecting unit such that the at least one connecting unit is deactivated by the error signal if an error of the functional unit has been detected.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: August 26, 2008
    Assignee: Robert Bosch GmbH
    Inventors: Reinhard Pfeufer, Margit Mueller, Wolfgang Haag, Stefan Keller
  • Publication number: 20080069136
    Abstract: One embodiment of the disclosures made herein is a method for facilitating prescribed application functionality via a network element adapted for providing Digital Subscriber Line Access Multiplexing (DSLAM) functionality. In accordance with such a method, a first functionality server implements server-specific functionality whereby information associated with the server-specific functionality is generated. In response to implementing the server-specific functionality, information in a universal interface format is transmitted for reception by a first access server from a first functionality server. The first access server is connected between the network element and the first functionality server. After receiving the information, the information is translated from the universal interface format to a system-compatible interface format. The translating is performed by the first access server and the system-specific interface format is different than the universal interface format.
    Type: Application
    Filed: November 14, 2007
    Publication date: March 20, 2008
    Inventors: Stefan Keller-Tuberg, Josh Bailey, Eric Jaramillo
  • Publication number: 20080056412
    Abstract: The invention relates to a method and a circuit arrangement for deciding a symbol upon the reception of a signal including or coupled with a quadrature signal pair, wherein the decision is made by means of an analysis of the metric of at least one reception point to at least one nominal point in a complex coordinate space, and the metric is analyzed in the non-Cartesian or not exclusively Cartesian complex coordinate space. The decision is made after the analysis, and during the decision process, a second most probable nominal point and a reliability of the decision are determined.
    Type: Application
    Filed: August 21, 2007
    Publication date: March 6, 2008
    Applicant: MICRONAS GmbH
    Inventors: Christian Bock, Stefan Keller
  • Publication number: 20080044057
    Abstract: A method for processing mailings comprising wrong recipient addresses, according to which the wrong recipient address is determined from a detected copy of a mailing surface. The inventive method is characterized in that a) a code containing data on instructions given ahead of time is detected on the surface of the mailing, and the instructions that were given ahead of time are determined based on the detected code; b) the wrong address is compared to address data in at least one database selected among a plurality of databases in accordance with the instructions that were given ahead of time; and c) a pieced of forwarding data is applied to the mailings in accordance with the result of the comparison and the instructions given ahead of time.
    Type: Application
    Filed: February 21, 2005
    Publication date: February 21, 2008
    Applicant: Deutsche Post AG
    Inventors: Stefan Keller, Jens Terboven
  • Patent number: 7315553
    Abstract: One embodiment of the disclosures made herein is a method for facilitating prescribed application functionality via a network element adapted for providing Digital Subscriber Line Access Multiplexing (DSLAM) functionality. In accordance with such a method, a first functionality server implements server-specific functionality whereby information associated with the server-specific functionality is generated. In response to implementing the server-specific functionality, information in a universal interface format is transmitted for reception by a first access server from a first functionality server. After receiving the information, the information is translated from the universal interface format to a system-compatible interface format.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: January 1, 2008
    Assignee: Alcatel Lucent
    Inventors: Stefan Keller-Tuberg, Josh Bailey, Eric Jaramillo
  • Patent number: 7307561
    Abstract: A method and device for function testing an analog-digital converter, the analog-digital converter performing a function for converting at least one analog signal into at least one digital signal using a first predetermined reference voltage, wherein the analog-digital converter is able to perform the function alternatively using at least one other reference voltage, in particular a predetermined second reference voltage, the analog-digital converter being blocked to prevent use of at least the other reference voltage, in particular the second reference voltage, by the analog-digital converter, a predetermined analog signal being converted into a digital signal for the function test and the digital signal being analyzed.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: December 11, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Wolfgang Haag, Claus Steinle, Stefan Keller
  • Patent number: 7272652
    Abstract: Processing Internet Group Management Protocol (IGMP) messages in which a response-mode determination process is facilitated after receiving an IGMP Membership Report designating a requested multipoint leaf connection, where in a proactive expedited leave process is performed in response to determining that implementation of the requested multipoint leaf connection is required and that required network resources are unavailable. A multicast leaf connection implementation process for implementing the requested multipoint leaf connection is performed in response to determining that required network resources are available.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: September 18, 2007
    Assignee: Alcatel Lucent
    Inventor: Stefan Keller-Tuberg
  • Patent number: 7267032
    Abstract: A fastener driving tool. At least one offset driven part is detachably attachable to an input part for accessing a fastener for driving thereof.
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: September 11, 2007
    Inventor: Stefan Keller
  • Patent number: 7254135
    Abstract: One embodiment of the disclosures made herein is an Internet Protocol (IP) multicast control system. In accordance with such IP multicast control system, the IP multicast control system includes a first module capable of facilitating IP multicast control connections between a first apparatus and a second apparatus and a second module capable of enabling termination of a control protocol of the first module. The second module is capable of being supported at an Asynchronous Transfer Mode (ATM) layer of the second apparatus.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: August 7, 2007
    Assignee: Alcatel
    Inventor: Stefan Keller-Tuberg
  • Publication number: 20070028629
    Abstract: The invention relates to an evaporator arrangement with a crucible, wherein the crucible is divided into at least two zones, each of which is heated to different temperatures. The first zone is a melt-down zone and the second zone the evaporation zone proper. The evaporator arrangement is preferably for the evaporation of metals. If metals are evaporated, a metal wire is preferably guided into the melt-down zone. However, metal alloys can also be evaporated thereby that one or several metal wires comprised of different materials are guided into the melt-down zone. Between the melt-down zone and the evaporator zone a heating zone may be provided.
    Type: Application
    Filed: June 8, 2006
    Publication date: February 8, 2007
    Inventors: Gunter Klemm, Marcus Bender, Ulrich Englert, Andreas Kloppel, Uwe Hoffmann, Hans-Georg Lotz, Stefan Hein, Stefan Keller