Patents by Inventor Carol Chang

Carol Chang 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).

  • Radar microphone speech recognition
    Patent number: 8924214
    Abstract: A method for detecting and recognizing speech is provided that remotely detects body motions from a speaker during vocalization with one or more radar sensors. Specifically, the radar sensors include a transmit aperture that transmits one or more waveforms towards the speaker, and each of the waveforms has a distinct wavelength. A receiver aperture is configured to receive the scattered radio frequency energy from the speaker. Doppler signals correlated with the speaker vocalization are extracted with a receiver. Digital signal processors are configured to develop feature vectors utilizing the vocalization Doppler signals, and words associated with the feature vectors are recognized with a word classifier.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: December 30, 2014
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Jefferson M Willey, Todd Stephenson, Hugh Faust, James P. Hansen, George J Linde, Carol Chang, Justin Nevitt, James A Ballas, Thomas Herne Crystal, Vincent Michael Stanford, Jean W. De Graaf
  • Radar Microphone Speech Recognition
    Publication number: 20120059657
    Abstract: A method for detecting and recognizing speech is provided that remotely detects body motions from a speaker during vocalization with one or more radar sensors. Specifically, the radar sensors include a transmit aperture that transmits one or more waveforms towards the speaker, and each of the waveforms has a distinct wavelength. A receiver aperture is configured to receive the scattered radio frequency energy from the speaker. Doppler signals correlated with the speaker vocalization are extracted with a receiver. Digital signal processors are configured to develop feature vectors utilizing the vocalization Doppler signals, and words associated with the feature vectors are recognized with a word classifier.
    Type: Application
    Filed: June 7, 2011
    Publication date: March 8, 2012
    Inventors: Jefferson M. Willey, Todd Stephenson, Hugh Faust, James P. Hansen, George J. Linde, Carol Chang, Justin Nevitt, James A. Ballas, Thomas Herne Crystal, Vincent Michael Stanford, Jean W. de Graaf
  • Visual blood glucose test strip
    Patent number: 6572822
    Abstract: A visual blood glucose test strip has two membranes that each incorporate a reagent that reacts with glucose in a blood sample applied to the membranes to cause a color change. One of the membranes also includes an inhibitor and a dye. A blood sample applied to the strip causes the two membranes to form two different colors. Comparing the colors to a calibrated color chart permits a user to determine the glucose concentration in the blood sample.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: June 3, 2003
    Assignee: Lifescan, Inc.
    Inventors: Franklin A. Jurik, Andrea Stubbs, Mimi Diemmy Dao, Carol Chang
  • Visual blood glucose test strip
    Publication number: 20030082074
    Abstract: A visual blood glucose test strip has two membranes that each incorporate a reagent that reacts with glucose in a blood sample applied to the membranes to cause a color change. One of the membranes also includes an inhibitor and a dye. A blood sample applied to the strip causes the two membranes to form two different colors. Comparing the colors to a calibrated color chart permits a user to determine the glucose concentration in the blood sample.
    Type: Application
    Filed: August 1, 2002
    Publication date: May 1, 2003
    Inventors: Franklin A. Jurik, Andrea Stubbs, Mimi Diemmy Dao, Carol Chang
  • Visual blood glucose test strip
    Patent number: 6531322
    Abstract: A visual blood glucose test strip has two membranes that each incorporate a reagent that reacts with glucose in a blood sample applied to the membranes to cause a color change. One of the membranes also includes an inhibitor and a dye. A blood sample applied to the strip causes the two membranes to form two different colors. Comparing the colors to a calibrated color chart permits a user to determine the glucose concentration in the blood sample.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: March 11, 2003
    Assignee: Lifescan, Inc.
    Inventors: Franklin A. Jurik, Andrea Stubbs, Mimi Diemmy Dao, Carol Chang
  • Visual blood glucose test strip
    Patent number: 6162397
    Abstract: A visual blood glucose test strip has two membranes that each incorporate a reagent that reacts with glucose in a blood sample applied to the membranes to cause a color change. One of the membranes also includes an inhibitor and a dye. A blood sample applied to the strip causes the two membranes to form two different colors. Comparing the colors to a calibrated color chart permits a user to determine the glucose concentration in the blood sample.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: December 19, 2000
    Assignee: Lifescan, Inc.
    Inventors: Franklin A. Jurik, Andrea Stubbs, Mimi Diemmy Dao, Carol Chang