Patents by Inventor Seung Han Lee

Seung Han Lee 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).

  • Subscriber control module having a test apparatus for asynchronous transfer mode
    Patent number: 6212168
    Abstract: The present invention relates to a subscriber control module having a test apparatus suitable for testing internal routes in an Asynchronous Transfer Mode ATM exchange system for improved reliability and effective maintenance thereof. A subscriber control module having testing functions makes it possible that internal whole routes in the exchange system under the control by maintenance control module inside the system can be tested through the use of subscriber switching network and connection switching network. Further, a test apparatus of the present invention placed inside the exchange system can test ATM subscribers with individually different rates, configured in such a way to be identical with boards used in the exchange system so that the test apparatus can be installed inside the exchange system.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: April 3, 2001
    Assignees: Electronics and Telecommunications Research Institute, Korea Telecom
    Inventors: Woon Seob So, Sung Mo Yang, Seung Han Lee, Jin Tae Kim, Hae Geun Kim