Patents by Inventor Andrew Paul Lewis

Andrew Paul Lewis 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).

  • Communication system architecture, infrastructure exchange and method of operation
    Patent number: 6262991
    Abstract: An infrastructure exchange (12) has a cross-point switch that is arranged to couple data transmission between subscriber terminals (16, 18), each having a dedicated modem (34), and at least one assignable modem (148) located in the infrastructure exchange (12). The infrastructure exchange (12) comprises fewer assignable modems than a combined number of dedicated modems within the subscriber terminals (16, 18) and, since the cross-point switch (106) is responsive to the data transmission sent via the modems of the subscriber terminals, the cross-point switch (106) thereby acts to concentrate a ratio of dedicated modems to assignable modems.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: July 17, 2001
    Assignee: Nortel Networks Limited
    Inventors: Peter John Dyke, Brian Michael Unitt, Andrew Paul Lewis