Patents by Inventor Robert Eric Vogelsberg

Robert Eric Vogelsberg 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).

  • Chained DMA devices for crossing common buses
    Patent number: 5664142
    Abstract: Chaining or cascading two or more DMA devices to perform DMA transfers across common buses. DMA devices are modified to act as a bus slave relative to another DMA bus master device so that information can be transferred from one bus to another across a third bus common to the DMA devices. The slave DMA can cause the master DMA to stop sending data to limit the bandwidth requirements of the common bus.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: September 2, 1997
    Assignee: International Business Machines Corporation
    Inventors: Gerald Donald Boldt, Stephen Dale Hanna, Robert Eric Vogelsberg