Patents by Inventor Ludger F. Johanterwage

Ludger F. Johanterwage 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).

  • Optimized buffering for JTAG boundary scan nets
    Patent number: 7000163
    Abstract: An apparatus comprising one or more groups of boundary scan cells, one or more group buffers, one or more repeater buffers and a controller. The group buffers may be coupled to each of the groups of boundary scan cells. The repeater buffers may be coupled in series with the group buffers. The controller may be coupled to the groups of boundary scan cells through the group buffers and the repeater buffers. The apparatus may be configured to buffer the groups of boundary scan cells to reflect an order of I/Os around the apparatus.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: February 14, 2006
    Assignee: LSI Logic Corporation
    Inventors: Juergen Dirks, Juergen K. Lahner, Ludger F. Johanterwage, Benjamin Mbouombouo, Human Boluki, Weidan Li