Patents by Inventor Robert A. Scheffler

Robert A. Scheffler 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).

  • Redundant memory sequence and fault isolation
    Patent number: 6981173
    Abstract: A computer system includes a plurality of memory modules that contain semiconductor memory, such as DIMMs. The system includes a host/data controller that utilizes an XOR engine to store data and parity information in a striped fashion across on a plurality of memory cartridges each containing a plurality of memory modules to create a redundant array of industry standard DIMMs (RAID). Each memory cartridge includes an independent memory controller and a corresponding control mechanism in the host/data controller to interpret the independent transitioning of each memory cartridge between various states, including a redundant-ready and a powerdown state to facilitate “hot-plug” capabilities utilizing the removable memory cartridges. Fault information may be passed between the individual memory controllers and the host/data controller to facilitate expedient fault isolation.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: December 27, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Patrick L. Ferguson, Robert A. Scheffler
  • Redundant memory sequence and fault isolation
    Publication number: 20030070113
    Abstract: A computer system includes a plurality of memory modules that contain semiconductor memory, such as DIMMs. The system includes a host/data controller that utilizes an XOR engine to store data and parity information in a striped fashion across on a plurality of memory cartridges each containing a plurality of memory modules to create a redundant array of industry standard DIMMs (RAID). Each memory cartridge includes an independent memory controller and a corresponding control mechanism in the host/data controller to interpret the independent transitioning of each memory cartridge between various states, including a redundant-ready and a powerdown state to facilitate “hot-plug” capabilities utilizing the removable memory cartridges. Fault information may be passed between the individual memory controllers and the host/data controller to facilitate expedient fault isolation.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 10, 2003
    Inventors: Patrick L. Ferguson, Robert A. Scheffler