Patents by Inventor Marcus C. Young

Marcus C. Young 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).

  • Computer storage systems
    Patent number: 6898681
    Abstract: A system for providing a copy of data at a point in time, has: a data storage device including a master store arranged to store blocks of data, at least one subsidiary store to store point in time copy data having blocks of data copied from said master store at a particular point in time, and a bitmap store associated with each the subsidiary store to store data indicating when a data block of the master store differs from a corresponding data block stored in the associated subsidiary store. Where more than one subsidiary stores and associated bitmap stores are provided, a controller may make different point in time copies in different subsidiary stores. A number of master stores may also be provided, each associated with a corresponding subsidiary store and a bitmap store. In this case, the controller may ensure that point in time copies of all the master stores are made at the same point in time. Data from a master store may be stored in a subsidiary store only when it is to be replaced in the master store.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: May 24, 2005
    Assignee: Sun Microsystems, Inc.
    Inventor: Marcus C. Young
  • Computer storage systems
    Publication number: 20030005235
    Abstract: A system for providing a copy of data at a point in time, has: a data storage device including a master store arranged to store blocks of data, at least one subsidiary store to store point in time copy data having blocks of data copied from said master store at a particular point in time, and a bitmap store associated with each the subsidiary store to store data indicating when a data block of the master store differs from a corresponding data block stored in the associated subsidiary store. Where more than one subsidiary stores and associated bitmap stores are provided, a controller may make different point in time copies in different subsidiary stores. A number of master stores may also be provided, each associated with a corresponding subsidiary store and a bitmap store. In this case, the controller may ensure that point in time copies of all the master stores are made at the same point in time. Data from a master store may be stored in a subsidiary store only when it is to be replaced in the master store.
    Type: Application
    Filed: July 2, 2002
    Publication date: January 2, 2003
    Applicant: Sun Microsystems, Inc.
    Inventor: Marcus C. Young