Patents by Inventor Paul Hatrack

Paul Hatrack 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 apparatus for encoding video information
    Patent number: 6434196
    Abstract: A method and apparatus for encoding, illustratively, a video information stream to produce an encoded information stream according to a group of frames (GOF) information structure where the GOF structure and, optionally, a bit budget are modified in response to, respectively, information discontinuities and the presence of redundant information in the video information stream (due to, e.g., 3:2 pull-down processing).
    Type: Grant
    Filed: April 2, 1999
    Date of Patent: August 13, 2002
    Assignee: Sarnoff Corporation
    Inventors: Sriram Sethuraman, Tihao Chiang, Xudong Song, Ravi Krishnamurthy, Paul Hatrack, Ya-Qin Zhang
  • METHOD AND APPARATUS FOR ENCODING VIDEO INFORMATION
    Publication number: 20020064228
    Abstract: A method and apparatus for encoding, illustratively, a video information stream to produce an encoded information stream according to a group of frames (GOF) information structure where the GOF structure and, optionally, a bit budget are modified in response to, respectively, information discontinuities and the presence of redundant information in the video information stream (due to, e.g., 3:2 pull-down processing).
    Type: Application
    Filed: April 2, 1999
    Publication date: May 30, 2002
    Inventors: SRIRAM SETHURAMAN, TIHAO CHIANG, XUDONG SONG, RAVI KRISHNAMURTHY, PAUL HATRACK, YA-QIN ZHANG
  • Apparatus and method for multiscale zerotree entropy encoding
    Patent number: 6269192
    Abstract: An apparatus and a concomitant method is disclosed for encoding wavelet trees to generate bitstreams with flexible degrees of spatial, quality and complexity scalabilities. The zerotree entropy (ZTE) encoding method is extended to achieve a fully scalable coding method by implementing a multiscale zerotree coding scheme.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: July 31, 2001
    Assignees: Sarnoff Corporation, Sharp Kabushiki Kaisha
    Inventors: Iraj Sodagar, Bing-Bing Chai, Paul Hatrack, Hung-Ju Lee