Patents by Inventor Edward Francis Westermann

Edward Francis Westermann 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).

  • Implementing B-picture scene changes
    Patent number: 8098729
    Abstract: A method and apparatus are provided for implementing B-picture scene changes. A prediction stage predicts a B-picture scene change based upon a sequence of statistical information in an encoder order and a reaction stage is responsive to the prediction stage for modifying a quantization scale of a rate control algorithm.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: January 17, 2012
    Assignee: International Business Machines Corporation
    Inventors: Charles Edward Boice, Charles John Stein, Krishna Chaitanya Ratakonda, Edward Francis Westermann
  • Method and apparatus for implementing B-picture scene changes
    Patent number: 7308029
    Abstract: A method and apparatus are provided for implementing B-picture scene changes. A prediction stage predicts a B-picture scene change based upon a sequence of statistical information in an encoder order and a reaction stage is responsive to the prediction stage for modifying a quantization scale of a rate control algorithm.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: December 11, 2007
    Assignee: International Business Machines Corporation
    Inventors: Charles Edward Boice, Charles John Stein, Krishna Chaitanya Ratakonda, Edward Francis Westermann
  • Efficient, flexible motion estimation architecture for real time MPEG2 compliant encoding
    Patent number: 6549575
    Abstract: Temporal compression of a digital video data stream with hierarchically searching in at least one search unit for pixels in a reference picture to find a best match for the current macroblock. This is followed by constructing a motion vector between the current macroblock and the best match macroblock in the reference picture.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: April 15, 2003
    Assignee: International Business Machines Corporation.
    Inventors: Adrian Stephen Butter, John Mark Kaczmarczyk, Agnes Yee Ngai, Edward Francis Westermann, Robert J. Yagley
  • Distributed control strategy for dynamically encoding multiple streams of video data in parallel for multiplexing onto a constant bit rate channel
    Publication number: 20020094031
    Abstract: A distributed control strategy is provided for dynamically encoding multiple streams of video data in parallel for multiplexing onto a constant bit rate channel. The control strategy is a single pass strategy which allows individual encode bit rates to be dynamically adjusted for each video data stream based in part on relative complexity of the multiple streams of video data, as well as fullness of compressed video data buffers coupled between the encoders and the constant bit rate channel. The control strategy includes encoding the multiple streams of video frames in parallel using multiple encoders, exchanging one or more statistics between the encode processes using an exchange interface, and dynamically adapting encoding of at least one stream of the video frames using the exchanged statistics based on relative complexity of the video frames.
    Type: Application
    Filed: January 18, 2002
    Publication date: July 18, 2002
    Applicant: International Business Machines Corporation
    Inventors: Agnes Y. Ngai, Edward Francis Westermann