Patents by Inventor Russel P. Sandberg

Russel P. Sandberg 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).

  • Method and apparatus for enhancing synchronous I/O in a computer system with a non-volatile memory and using an acceleration device driver in a computer operating system
    Patent number: 5519853
    Abstract: An acceleration device for enhancing the speed of synchronous writes in a computer system includes a novel control subsystem, in one embodiment a device driver, and stable storage having an access time on the same order of magnitude as the access time of the main memory in the computer system. In one embodiment, the novel device driver is interposed in the operating system of the computer between the proprietary kernel and one or more peripheral storage unit device drivers. The novel device driver intercepts I/O commands, for example, synchronous write commands, from the operating system that are intended for one of the peripheral storage unit device drivers and subsequently copies the data specified in the write command from main memory of the computer to the stable storage of the acceleration device. The stable storage is operated as a cache and upon one of a set of predetermined conditions being satisfied, selected data stored in the stable storage are transferred, i.e.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: May 21, 1996
    Assignee: Legato Systems, Inc.
    Inventors: Joseph P. Moran, Russel P. Sandberg, Donald C. Coleman
  • Method and apparatus for enhancing synchronous I/O in a computer system with a non-volatile memory and using an acceleration device driver in a computer operating system
    Patent number: 5359713
    Abstract: An acceleration device for enhancing the speed of synchronous writes in a computer system includes a novel control means, in one embodiment a device driver, and stable storage having an access time on the same order of magnitude as the access time of the main memory in the computer system. In one embodiment, the novel device driver is interposed in the operating system of the computer between the proprietary kernel and one or more peripheral storage unit device drivers. The novel device driver intercepts I/O commands, for example, synchronous write commands, from the operating system that are intended for one of the peripheral storage unit device drivers and subsequently copies the data specified in the write command from main memory of the computer to the stable storage of the acceleration device. The stable storage is operated as a cache and upon one of a set of predetermined conditions being satisfied, selected data stored in the stable storage are transferred, i.e.
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: October 25, 1994
    Assignee: Legato Systems, Inc.
    Inventors: Joseph P. Moran, Russel P. Sandberg, Donald C. Coleman