Patents by Inventor Reinhard Kellmann

Reinhard Kellmann 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).

  • Method and circuitry for determining the beginning of echo pulses
    Patent number: 5436580
    Abstract: A method and circuit for accurately determining the leading edge timing of a pulse of high frequency carrier signal at a receiver which substantially simultaneously receives the same pulse over multiple transmission paths resulting in distortion of the pulse envelope. The amplitude of the pulse envelope is compared with the amplitude of the derivative of the pulse envelope and with a reference threshold amplitude. The leading edge of a pulse is indicated when the amplitude of the pulse envelope exceeds both the amplitude of the derivative and the reference threshold.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: July 25, 1995
    Assignee: Allied-Signal Inc.
    Inventors: Reinhard Kellmann, Manfred Selke, Lars I. Hauschultz