Patents by Inventor John L. Carlsten

John L. Carlsten 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 SYSTEM FOR TRACKING MOVING OBJECTS IN A SCENE
    Publication number: 20100310120
    Abstract: A method and system for tracking moving objects in a scene is described. One embodiment acquires a digital video signal corresponding to the scene; identifies in the digital video signal one or more candidate moving objects; locates at least one candidate moving object in the digital video signal subsequent to identification of the at least one candidate moving object; tracks candidate moving objects that, for at least a predetermined period after they have been identified, continue to be located in the digital video signal; assigns a score to each tracked candidate moving object in accordance with how long after passage of the predetermined period the tracked candidate moving object has continued to be located in the digital video signal; combines the respective scores of the tracked candidate moving objects to obtain an overall score for the scene; and indicates to a user whether the overall score satisfies a predetermined criterion.
    Type: Application
    Filed: December 21, 2007
    Publication date: December 9, 2010
    Inventors: Charlie Keith, Kevin Repasky, John L. Carlsten, Joseph A. Shaw, Lee H. Spangler
  • Optical detection of oscillating targets using modulation of scattered laser light
    Patent number: 7511624
    Abstract: The present invention provides systems and methods using a temporal-frequency sensitive receiver to detect laser light that is scattered by an oscillating object, thereby allowing remote monitoring of the object's position and movement.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: March 31, 2009
    Assignee: Montana State University
    Inventors: Joseph A. Shaw, Kevin S. Repasky, John L. Carlsten, Lee H. Spangler, David S. Hoffman
  • Laser frequency stabilizer using transient spectral hole burning
    Patent number: 6654394
    Abstract: Techniques for stabilizing a laser at a selectable frequency include splitting an output beam from an electrically adjustable laser into a first beam and a second beam. The second beam is transmitted through a modulator. Then the second beam is transmitted through a transient spectral hole burning material onto a detector. The laser is electronically adjusted in response to a detector output from the detector which senses the changes in the modulated second beam after it passes through the transient spectral hole burning material.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: November 25, 2003
    Assignee: The Research and Development Institute, Inc.
    Inventors: Peter B. Sellin, Nicholas M. Strickland, John L. Carlsten, Rufus L. Cone
  • Programmable frequency reference for laser frequency stabilization, and arbitrary optical clock generator, using persistent spectral hole burning
    Patent number: 6516014
    Abstract: Techniques for stabilizing a laser (110) at a selectable frequency include splitting an output beam from an electrically adjustable laser into a first beam (369) and a second beam (361). The second beam is transmitted through a modulator (112). Then the second beam is transmitted through a spectral hole burning material (310) onto a detector (120). The laser is electronically adjusted in response to a detector output from the detector which senses the changes in the modulated second beam after it passes through the spectral hole burning material.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: February 4, 2003
    Assignee: The Research and Development Institute, Inc.
    Inventors: Peter B. Sellin, Nicholas M. Strickland, John L. Carlsten, Rufus L. Cone