Patents by Inventor Jonathan S. Kau

Jonathan S. Kau 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).

  • Evaluation of perceptual visual quality
    Patent number: 9591304
    Abstract: A method of evaluating perceptual visual quality (PVQ) of compressed video bit streams in the H.262 or H.264 formats without performing block transforms or prediction decodes I-frames within a group of pictures (GOP). DC and AC coefficients are determined for selected macroblocks within a selected one of the I-frames. Based upon the DC and AC coefficients, the PVQ is calculated.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: March 7, 2017
    Assignee: TEKTRONIX, INC.
    Inventors: Jonathan S. Kau, William G. Mears
  • EVALUATION OF PERCEPTUAL VISUAL QUALITY
    Publication number: 20130128993
    Abstract: A method of evaluating perceptual visual quality (PVQ) of compressed video bit streams in the H.262 or H.264 formats without performing block transforms or prediction decodes I-frames within a group of pictures (GOP). DC and AC coefficients are determined for selected macroblocks within a selected one of the I-frames. Based upon the DC and AC coefficients, the PVQ is calculated.
    Type: Application
    Filed: May 22, 2012
    Publication date: May 23, 2013
    Applicant: TEKTRONIX, INC.
    Inventors: JONATHAN S. KAU, WILLIAM G. MEARS
  • System and method for inserting local content into programming content
    Patent number: 6029045
    Abstract: A system for communicating a programming data stream and a data stream containing pieces of local content data that are going to be inserted into a local content space in the programming data stream at some predetermined time is provided in which the programming data stream and the local content digital data stream are transmitted to a set-top box in a house of a user, the set-top box stores a predetermined portion of the pieces of local content data based on predetermined criteria, and the set-top box identifies a local content space in the programming data stream.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: February 22, 2000
    Assignee: Cogent Technology, Inc.
    Inventors: Martin R. Picco, William G. Mears, Jonathan S. Kau