Patents by Inventor AnneMarie Freitas

AnneMarie Freitas 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).

  • Apparatus and method for learning and filtering destination and source addresses in a local area network system
    Patent number: 5136580
    Abstract: An apparatus and method for learning and filtering destination and source addresses in a local area network (LAN) system is provided to facilitate the transfer of information packets from one local area network to another. The apparatus provides a link between two (or more) remotely located LANS through the use of a LAN bridge. The apparatus has a LAN controller interface, a microprocessor, a state machine and one or more content addressable memories which function to monitor an information packet received from the LAN. One such apparatus is connected to each of the LANs to be interfaced and each of these apparatus to each other in order to communicate messages between the LANs. Upon detection of an information packet, the apparatus examines both the source and destination addresses of the packet. The source address is compared to a dynamically generated table of source addresses and then compared to the incoming destination address.
    Type: Grant
    Filed: May 16, 1990
    Date of Patent: August 4, 1992
    Assignee: Microcom Systems, Inc.
    Inventors: Gary B. Videlock, Russell C. Gocht, AnneMarie Freitas, Mark J. Freitas