Patents by Inventor Su Mi Chang

Su Mi 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).

  • Optical buffer utilizing a cell pointer
    Patent number: 6421152
    Abstract: The present invention relates to an apparatus of a high speed optical buffer utilizing a cell pointer so that optical cells of asynchronous transfer mode can be stored and processed at high speed without the restriction of processing time for a high speed network architecture, wherein an internal switch of the apparatus would be controlled by extracting optically the cell pointer indicating starting point by using a high speed optical buffer with terahertz optical asymmetric demultiplex (Terahetz Optical Asymmetric Demultiplexer) in order to avoid a collision of each cell which is transmitted on a same channel especially at the high speed network.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: July 16, 2002
    Assignee: Korea Telecom
    Inventors: Kyeong Mo Yoon, Yoon Hak Bang, Su Mi Chang, Jin Sik Park, Yong Ki Park, Sang Goo Lee, Sang In Kim
  • Large capacity optical ATM switch
    Patent number: 6288808
    Abstract: An optical asynchronous transfer mode ATM switch for recovering the limitation of processing capacity and performing large capacity of switching is disclosed.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: September 11, 2001
    Assignee: Korea Telecommunication Authority
    Inventors: Sang Goo Lee, Kyeong Mo Yoon, Su Mi Chang, Jin Sik Park, Yong Ki Park, Jin Seob Eom, Kwang Bok Kim, Sang Ho Ahn, Ki O Park