Patents by Inventor Ki-o Kim

Ki-o Kim 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).

  • Apparatus and method for performing the time delay estimation of signals propagating through an environment
    Patent number: 7363177
    Abstract: A system and method for increasing the accuracy of time delay estimates of signals propagating through an environment. The system includes one or more sensors for receiving a plurality of signals, and a time delay estimator for measuring time delays between multiple pairs of signals. At least some of the multiple pairs of signals are received and measured at different points in time. The system further includes a data analyzer for analyzing time delay estimation data, for generating a statistical distribution of time delay estimates from the data, and for calculating a statistical estimate of time delay from the distribution. By increasing the number of signals employed by the system, the accuracy of the time delay estimation is increased. Further, by calculating the median or the mode of the statistical distribution, noise tolerance is improved.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: April 22, 2008
    Assignee: Brown University
    Inventors: Nathan Intrator, Ki-o Kim, Nicola Neretti, Leon N. Cooper
  • Apparatus and method for performing the delay estimation of signals propagating through an environment
    Publication number: 20060235635
    Abstract: A system and method for increasing the accuracy of time delay estimates of signals propagating through an environment. The system includes one or more sensors for receiving a plurality of signals, and a time delay estimator for measuring time delays between multiple pairs of signals. At least some of the multiple pairs of signals are received and measured at different points in time. The system further includes a data analyzer for analyzing time delay estimation data, for generating a statistical distribution of time delay estimates from the data, and for calculating a statistical estimate of time delay from the distribution. By increasing the number of signals employed by the system, the accuracy of the time delay estimation is increased. Further, by calculating the median or the mode of the statistical distribution, noise tolerance is improved.
    Type: Application
    Filed: August 5, 2004
    Publication date: October 19, 2006
    Inventors: Nathan Intrator, Ki-o Kim, Nicola Neretti, Leon Cooper