Patents by Inventor Joe Heideman

Joe Heideman 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).

  • Interfacing unit for local area networks
    Patent number: 5249183
    Abstract: A local area network (LAN) having a 10Base-T media attachment unit (MAU) is disclosed for coupling an attachment unit interface (AUI) to a twisted pair link through an AUI port of the 10Base-T MAU. In addition to meeting or exceeding standards set forth in the proposed supplement (P802.3I/D10) to IEEE standard 802.3 for LANs, the MAU provides an interface between the AUI and a RJ45 (twisted pair) connector which auto-engages when activity is detected on the twisted pair link. Lack of activity on the twisted pair link forces the 10Base-T MAU to isolate its AUI port from the AUI. An Ethernet (coaxial) type MAU commonly connected with the 10Base-T MAU at the AUI may be utilized without manual intervention when the twisted pair link is inactive.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: September 28, 1993
    Assignee: Level One Communications, Inc.
    Inventors: Dave Wong, Haim Shafir, Joe Heideman, Cheng C. Shih