Patents by Inventor Tom Kwang-Tsai Koai

Tom Kwang-Tsai Koai 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).

  • Asymmetrical digital subscriber line (ADSL) downstream high speed cell bus interface protocol
    Patent number: 6683887
    Abstract: An asymmetrical digital subscriber line (ADSL) downstream high speed cell bus interface protocol allows ADSL cell packets to be transmitted downstream from an ADSL bank control unit (ABCU) to a plurality of ADSL line units at a high rate of downstream throughput with flexible and efficient allocation of bandwidths and reduced error probability. The frame boundaries of an ADSL frame are derived from a conventional subscriber bus interface (SBI) frame for carrying conventional narrowband plain old telephone service (POTS) traffic, thereby allowing the ABCU and the ADSL line units to be implemented in existing channel banks with standard channel bank backplane traces.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: January 27, 2004
    Assignee: Alcatel USA Sourcing, L.P.
    Inventors: Tony Huang, Prakash Appanna, Jensheng Lee, Hamid Baradaran, Hans Christian Mogensen, James Lotz, Tom Kwang-Tsai Koai, Osama Bahgat