Patents by Inventor David Friedrich

David Friedrich 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 APPARATUS FOR THE ANALYSIS OF A BALLISTOCARDIOGRAM SIGNAL
    Publication number: 20120123279
    Abstract: There is provided a method and apparatus for the analysis of a ballistocardiogram signal. The method comprises detecting heart beats in the BCG signal by locating typical features of a heart beat for a user in the BCG signal, the typical features of the heart beat having been obtained during a training step.
    Type: Application
    Filed: July 23, 2010
    Publication date: May 17, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Christoph Brueser, Kurt Stadlthanner, David Friedrich, Andreas Brauers
  • METHOD AND APPARATUS FOR THE ANALYSIS OF BALLISTOCARDIOGRAM SIGNALS
    Publication number: 20110251502
    Abstract: There is provided a method for analyzing a ballistocardiogram signal to determine a heart rate, the method comprising: determining an initial time estimate for a first heart beat in the ballistocardiogram signal; computing, iteratively, estimates for subsequent heart beats in the ballistocardiogram signal using the initial time estimate; wherein each iteration in the step of computing comprises evaluating a target function that comprises a weighted sum of a plurality of scoring functions; and wherein each iterative step of computing estimates for subsequent heart beats in the ballistocardiogram signal is limited to a target interval after the time estimate found in the previous iterative step of computing.
    Type: Application
    Filed: December 7, 2009
    Publication date: October 13, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: David Friedrich, Xavier Louis Marie Antoine Aubert, Andreas Brauers, Hartmut Fuhr, Kurt Stadlthanner