Patents by Inventor Peter Gysel

Peter Gysel 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).

  • Send filter for an echo canceler
    Patent number: 5649010
    Abstract: Send filter for an echo canceler.
    Type: Grant
    Filed: July 19, 1995
    Date of Patent: July 15, 1997
    Assignee: Siemens Schweiz AG
    Inventors: Peter Gysel, Bruno Wenger, August Kaelin, Daniel Mueller
  • Echo canceler
    Patent number: 5633863
    Abstract: Echo canceler. A circuit arrangement for the cancellation of echo signals, wherein in the received path, an analog/digital converter is connected with a first adder and a second adder is interposed after the analog/digital converter, with the estimated echo signal being divided into first and second portions, whereby the first portion is transmitted to the first adder and the second portion is transmitted to the second adder for the production of the received signal. In a further embodiment, a third adder is interposed between the analog/digital converter and the second adder, via which the output signal of a compensation filter is added to the signal in the received path.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: May 27, 1997
    Assignee: Siemens Schweiz AG
    Inventors: Peter Gysel, Bruno Wenger, August Kalin, Daniel Muller