Patents by Inventor Ethan Farquhar

Ethan Farquhar 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).

  • Publication number: 20140343460
    Abstract: Systems and methods for performing gait analysis of a subject are provided. A method includes obtaining a plurality of measurement sets for a subject, each of the plurality of measurement sets including inertial measurements obtained from a sensor device associated with a different one of a plurality of segments of the subject and calculating a sensor orientation for the sensor device associated with each of the plurality of segments based at least on a portion of a corresponding one the plurality of measurement sets. The method also includes computing an estimate of a segment orientation for each of the plurality of segments based on a data fusion process applied at each of the plurality of segments, where the data fusion process includes combining at least a one of the plurality measurement sets and the corresponding sensor orientation to estimate the segment orientation.
    Type: Application
    Filed: May 15, 2013
    Publication date: November 20, 2014
    Inventors: Boyd McCutchen EVANS, III, John Kyle P. MUELLER, Milton Nance ERICSON, Ethan FARQUHAR
  • Patent number: 7269046
    Abstract: A floating-gate transistor array and method for programming the same. The floating-gate transistor array includes a plurality of transistors having a source, drain, and floating-gate, whereby the plurality of transistors is arranged into multiple rows and columns. Each row of transistors includes a row programming switch having an output connected to each floating-gate within the row, while each column of transistors includes a column programming switch having an output connected to each drain within the column. The source of each transistor is coupled with a source line corresponding to the specific row of the transistor. The row and column programming switches are utilized to select and program a desired floating-gate transistor. In an indirect programming method, two transistors share a floating gate, such that programming a programmer transistor modifies the current of an agent transistor, which is attached to the circuit, thereby permitting run-time programming.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: September 11, 2007
    Assignee: Georgia Tech Research Corporation
    Inventors: David W. Graham, Ethan Farquhar, Jordan Gray, Christopher M. Twigg, Brian Degnan, Christal Gordon, David Abramson, Paul Hasler
  • Publication number: 20070007999
    Abstract: A floating-gate transistor array and method for programming the same. The floating-gate transistor array includes a plurality of transistors having a source, drain, and floating-gate, whereby the plurality of transistors is arranged into multiple rows and columns. Each row of transistors includes a row programming switch having an output connected to each floating-gate within the row, while each column of transistors includes a column programming switch having an output connected to each drain within the column. The source of each transistor is coupled with a source line corresponding to the specific row of the transistor. The row and column programming switches are utilized to select and program a desired floating-gate transistor. In an indirect programming method, two transistors share a floating gate, such that programming a programmer transistor modifies the current of an agent transistor, which is attached to the circuit, thereby permitting run-time programming.
    Type: Application
    Filed: May 10, 2006
    Publication date: January 11, 2007
    Applicant: Georgia Tech Research Corporation
    Inventors: David Graham, Ethan Farquhar, Jordan Gray, Christopher Twigg, Brian Degnan, Christal Gordon, David Abramson, Paul Hasler