Patents by Inventor Ludwig Buscher

Ludwig Buscher 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).

  • Data transmission device for a motor vehicle, comprising a pulse generator and a monitoring unit, as well as a pulse generator for the monitoring unit
    Patent number: 6144927
    Abstract: A data-transmission device has a pulse generator (1) and a monitoring unit (20) for use in a vehicle. A signal generated by the sensor (2) is transmitted from the pulse generator (1) to the monitoring unit (20) by a signal line (9) and also, when requested by the monitoring unit, is transmitted in encrypted form along a data line (19). The signal generated by the pulse generator (1) is first stored in an intermediate store. Before transmission, the contents of this store are encrypted. On arrival in the monitoring unit, the encrypted signal is compared with the signal previously transmitted in the usual way and recorded there. This is a security check which reveals any manipulations which have been made during transmission.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: November 7, 2000
    Assignee: Mannesmann VDO AG
    Inventors: Thomas Grill, Martin Gruler, Ludwig Buscher, Helmut Bacic, Norbert Lais, Hartmut Schultze, Josef Wangler