Patents by Inventor Sarah A. Rajala

Sarah A. Rajala 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).

  • Image-sequence compression using a motion-compensation technique
    Patent number: 4717956
    Abstract: A motion-compensated image-sequence compression technique is disclosed in which the motion of an object point in a video screen occurring between the present frame and the following frame is predicted. The technique, useful in video teleconferencing, comprises calculating an initial estimate of the displacement of the object point and recursively updating the initial displacement estimate. The step of calculating an initial displacement comprises projecting the displacement forward along the trajectory of the motion of the object point from the present frame to the following frame.
    Type: Grant
    Filed: August 20, 1985
    Date of Patent: January 5, 1988
    Assignee: North Carolina State University
    Inventors: Robert J. Moorhead, Sarah A. Rajala