Patents by Inventor Reto Schreppers

Reto Schreppers 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: 7143049
    Abstract: A method and a system for registering tickets includes defining a waking zone with a transceiver unit having a transmitting unit, defining a registration zone with a registration transceiver unit, providing tickets having a processor, a memory, a ticket receiver, and a ticket transceiver for communicating between the waking zone and the tickets, transmitting a first information unit from the transmitting unit to the ticket receiver of a ticket located in the waking zone, activating the ticket transceiver of the ticket located in the waking zone with an item of information contained in the first information unit, at a beginning of ticket registration, setting up a bi-directional communication between the registration transceiver unit and a ticket transceiver of a ticket located in the registration zone through additional information units, and registering ticket presence to establish a service to be used or a defined presence.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: November 28, 2006
    Assignee: Siemens VDO Automotive AG
    Inventors: Rolf Bächtiger, Christoph Cronimund, Gérard Salzgeber, Reto Schreppers, Bruno Wenger, Willi Brändli, Aldo Rebsamen
  • Publication number: 20030072325
    Abstract: The invention relates to a method for managing collisions in a wireless detection system, wherein a plurality of portable receivers and at least one transmitter/receiver unit mounted on a vehicle are provided. Communication is of the intermittent type due to an on/off cycle. Sent call messages are first confirmed by a quittance device associated with the detection zone by means of a quittance report. The receivers respond to a received call message with an availability message that identifies the respective receiver. Before a message is sent, it is checked whether the radio medium is available. Collisions that occur are recognized by the absence of the quittance report. Communication is resumed by sending further messages at fixed intervals or at intervals that are determined by a random number generator. The inventive method provides for a complete detection of the portable receivers even when the ranges of detection overlap. The on/off cycle can be adaptively adjusted.
    Type: Application
    Filed: October 25, 2002
    Publication date: April 17, 2003
    Inventors: Willi Brandli, Yvo Vultier, Dietrich Gilg, Reto Schreppers
  • Patent number: 6539293
    Abstract: The behavior of the bogie of a muliple-axle vehicle is monitored. Accelerations of at least two axles of the bogie are measured with acceleration sensors allocated to the axles. The sensor signals are subjected to a Fourier transformation in FFT units. The frequency profiles resulting from the Fourier transform are compared with profiles that are stored in memory. Differences that are detected are compared with threshold values and messages are correspondingly sent to the system that controls the vehicle. The monitoring system allows mechanical operating errors of the bogie to be detected independently of effects caused by the running surface upon which the vehicle travels.
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: March 25, 2003
    Assignee: Siemens Schweiz AG
    Inventors: Rolf Bächtiger, Max Loder, Reto Schreppers
  • Publication number: 20020140553
    Abstract: A method and a system for registering tickets includes defining a waking zone with a transceiver unit having a transmitting unit, defining a registration zone with a registration transceiver unit, providing tickets having a processor, a memory, a ticket receiver, and a ticket transceiver for communicating between the waking zone and the tickets, transmitting a first information unit from the transmitting unit to the ticket receiver of a ticket located in the waking zone, activating the ticket transceiver of the ticket located in the waking zone with an item of information contained in the first information unit, at a beginning of ticket registration, setting up a bi-directional communication between the registration transceiver unit and a ticket transceiver of a ticket located in the registration zone through additional information units, and registering ticket presence to establish a service to be used or a defined presence.
    Type: Application
    Filed: March 11, 2002
    Publication date: October 3, 2002
    Inventors: Rolf Bachtiger, Christoph Cronimund, Gerard Salzgeber, Reto Schreppers, Bruno Wenger, Willi Brandli, Aldo Rebsamen
  • Publication number: 20020056398
    Abstract: The behavior of the bogie of a muliple-axle vehicle is monitored. Accelerations of at least two axles of the bogie are measured with acceleration sensors allocated to the axles. The sensor signals are subjected to a Fourier transformation in FFT units. The frequency profiles resulting from the Fourier transform are compared with profiles that are stored in memory. Differences that are detected are compared with threshold values and messages are correspondingly sent to the system that controls the vehicle. The monitoring system allows mechanical operating errors of the bogie to be detected independently of effects caused by the running surface upon which the vehicle travels.
    Type: Application
    Filed: October 1, 2001
    Publication date: May 16, 2002
    Inventors: Rolf Bachtiger, Max Loder, Reto Schreppers