Patents by Inventor Stefan Rothbauer

Stefan Rothbauer 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: 20110055564
    Abstract: A method and system for transmitting a message in real time between users in a closed network of a vehicle (1), in particular a rail-mounted vehicle, are provided, wherein safety-relevant real-time data (D) of a message (N), including a transmitter ID of a transmitter (3) within the closed network, is encrypted (S1) using a private key (KprivA) of the transmitter (3) in order to generate an encrypted message (N?); the encrypted message (N?), together with the unencrypted transmitter ID of the transmitter (3), is transmitted (S2) from the transmitter (3) to a receiver (4) within the closed network via a vehicle bus (2), and the encrypted message (N?) is decrypted by the receiver (4) using a public key (KpublicA) of the transmitter (3) identified by the received, unencrypted transmitter ID in order to retrieve the unencrypted message (N).
    Type: Application
    Filed: February 20, 2009
    Publication date: March 3, 2011
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Roland Porsch, Stefan Rothbauer
  • Publication number: 20100313075
    Abstract: At least one embodiment of the present invention relates to supporting a safety-oriented system, with the safety-oriented system including safety-critical software components and non-safety-critical software components. In this method, a possibility of a safety-critical software component and a non-safety-critical software component influencing each other is identified and a set of technical measures for preventing the possibility of influencing is defined. In this way, an absence of feedback from non-safety-critical software components to safety-critical software components is both verified and also ensured by at least one embodiment of the present invention.
    Type: Application
    Filed: November 12, 2008
    Publication date: December 9, 2010
    Inventors: Efthimios Liakos, Roland Porsch, Stefan Rothbauer, Martin Rothfelder, Michael Zanzinger, Hartmut Zeilmann
  • Publication number: 20100223500
    Abstract: IN a method and a device for determining a probability of occurrence that an overall system fulfills a predefined system performance, the overall system is composed of instances of different classes of partial systems, and each class of partial systems has an associated class fault tree. The method has the following steps: (a) calculating (S1) an overall performance for each failure combination of the number of non-failed instances within a class; (b) automatic selection (S2) of failure combinations, the calculated overall performance of which fulfills the predefined system performance; (c) automatic generation (S3) of an overall fault tree based on the class fault trees of partial systems as a function of the selected failure combinations; and (d) evaluating (S4) of the generated overall fault tree for calculating the probability of occurrence of a fulfillment of the predefined system performance by the overall system.
    Type: Application
    Filed: July 29, 2008
    Publication date: September 2, 2010
    Inventors: Reiner Heilmann, Manfred Lohner, Stefan Rothbauer, Ariane Sutor