Patents by Inventor Chaochen J. Sun

Chaochen J. Sun 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).

  • System and method for teleconferencing on an internetwork comprising connection-oriented and connectionless networks
    Patent number: 6501740
    Abstract: A system and method for teleconferencing between conferees connected through a connectionless network and conferees connected through a connection-oriented network having a bridge. A call server connects to a bridge hosting a teleconference among connection-oriented conferees and joins the teleconference. The connection-oriented signal received by the call server is converted into a connectionless signal and sent to authorized, authenticated conferees connected through the connectionless network. The call server receives a connectionless signal from a conferee through the connectionless network, converts the signal to a connection-oriented signal and sends the connection-oriented signal to the bridge. Connectionless signals are stored in a database to be analyzed or sent to other conferees, such as those who were unavailable to join the teleconference as it occurred.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: December 31, 2002
    Assignee: AT&T Corp.
    Inventors: Chaochen J. Sun, Earle H. West, Robert E. Reit