Patents by Inventor Joon P. Chang

Joon P. Chang 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).

  • Buffer control apparatus for compression of video intraframes
    Patent number: 5602594
    Abstract: An apparatus for controlling a buffer adapted to transmit motion-involving video compressed by use of an intraframe compression coding technique employing discrete cosine transform and variable length coding to a constant rate channel, wherein a statistical feed-forward-based buffer control apparatus having a simple construction is combined with an existing statistical feed-back-based buffer control apparatus, thereby being capable of stably controlling a buffer even when a scene change occurs, and reducing the capacity of the buffer and the length of a tape needed.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: February 11, 1997
    Assignee: Goldstar Co., Ltd.
    Inventors: Sung K. Cho, Yong H. Lee, Joon P. Chang, Choon Lee