Patents by Inventor J. Wyn Jones

J. Wyn Jones 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 synchronizing the rotations of data storage disks in a plurality of disk storage devices
    Patent number: 5796540
    Abstract: A synchronization technique is described which finds use in a disk array subsystem comprising a plurality of disk storage devices connected to a controller. In response to signals from each of the devices specifying their angular position at a particular time, the controller calculates the relative angular positions of the devices and issues a signal to each of the devices specifying the amount and direction of chance in rotational velocity required to achieve synchronization. In a two device subsystem, the signal to one device will specify a speed decrease and the signal to the second device will specify a speed increase.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: August 18, 1998
    Assignee: International Business Machines Corporation
    Inventors: J. Wyn Jones, Stephen Peter Legg, Eric Lewis Newman
  • Method and apparatus for synchronizing the rotations of data storage disks in a plurality of disk storage devices
    Patent number: 5598303
    Abstract: A synchronization technique is described which finds use in a disk array subsystem comprising a plurality of disk storage devices connected to a controller. In response to signals from each of the devices specifying their angular position at a particular time, the controller calculates the relative angular positions of the devices and issues a signal to each of the devices specifying the amount and direction of change in rotational velocity required to achieve synchronization. In a two device subsystem, the signal to one device will specify a speed decrease and the signal to the second device will specify a speed increase.
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: January 28, 1997
    Assignee: International Business Machines Corporation
    Inventors: J. Wyn Jones, Stephen P. Legg, Eric L. Newman