Patents by Inventor Robert George Schaaf

Robert George Schaaf 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).

  • System for transferring data from a source device to a target device in which the address of data movement engine is determined
    Patent number: 5765022
    Abstract: PowerPC external control instructions are utilized to pass a translated address to a transfer engine located in the system memory controller, together with previously transferred parameters into control registers within the memory controller. An accelerated data movement is accomplished between system memory and an input/output device with a minimum of processor overhead and bus bandwidth utilization. This method is useful for transferring large amounts of data between memory and such devices as graphics adapters or multimedia devices.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: June 9, 1998
    Assignee: International Business Machines Corporation
    Inventors: John Michael Kaiser, Warren Edward Maule, Robert George Schaaf, David Wayne Victor