Patents by Inventor Johann Zemella

Johann Zemella 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).

  • Detection of changes in an interval of time between optical or electrical signals
    Patent number: 8242767
    Abstract: A method is disclosed for detecting changes in an interval of time (?T) between an optical or electrical signal and an optical or electrical reference signal using a photodetector. The method may be used to synchronize an optical or electrical signal with an optical or electrical reference signal. An apparatus for carrying out the method is also disclosed. The method comprises the steps of: receiving the optical signal and the optical reference signal by means of the photodetector, outputting an electrical response signal at an output of the photodetector, the electrical response signal having a frequency spectrum which depends on the interval of time (?T), filtering a selected harmonic from the frequency spectrum of the electrical response signal which has been output, and detecting changes in the interval of time (?T) from changes in the amplitude of the selected harmonic.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: August 14, 2012
    Assignee: Deutsches Elektronen-Snychrotron Desy
    Inventors: Florian Lohl, Johann Zemella, Holger Schlarb, Frank Ludwig, Axel Winter, Matthias Felber
  • DETECTION OF CHANGES IN AN INTERVAL OF TIME BETWEEN OPTICAL OR ELECTRICAL SIGNALS
    Publication number: 20100098408
    Abstract: A method is disclosed for detecting changes in an interval of time (?T) between an optical or electrical signal and an optical or electrical reference signal using a photodetector. The method may be used to synchronize an optical or electrical signal with an optical or electrical reference signal. An apparatus for carrying out the method is also disclosed. The method comprises the steps of: receiving the optical signal and the optical reference signal by means of the photodetector, outputting an electrical response signal at an output of the photodetector, the electrical response signal having a frequency spectrum which depends on the interval of time (?T), filtering a selected harmonic from the frequency spectrum of the electrical response signal which has been output, and detecting changes in the interval of time (?T) from changes in the amplitude of the selected harmonic.
    Type: Application
    Filed: August 21, 2009
    Publication date: April 22, 2010
    Applicant: DEUTSCHES ELEKTRONEN-SYNCHROTRON DESY
    Inventors: Florian Löhl, Johann Zemella, Holger Schlarb, Frank Ludwig, Axel Winter, Matthias Felber