Patents by Inventor Carl James Appellof

Carl James Appellof 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).

  • Format-preserving deduplication of data
    Patent number: 8683156
    Abstract: Data blocks are copied from a source (e.g., a source virtual disk) to a target (e.g., a target virtual disk). The source virtual disk format is preserved on the target virtual disk. Offsets for extents stored in the target virtual disk are converted to offsets for corresponding extents in the source virtual disk. A map of the extents for the source virtual disk can therefore be used to create, for deduplication, segments of data that are aligned to boundaries of the extents in the target virtual disk.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: March 25, 2014
    Assignee: Symantec Corporation
    Inventors: Ashutosh Kanhaiya Bahadure, Carl James Appellof, Edward Michael Goble
  • FORMAT-PRESERVING DEDUPLICATION OF DATA
    Publication number: 20130151802
    Abstract: Data blocks are copied from a source (e.g., a source virtual disk) to a target (e.g., a target virtual disk). The source virtual disk format is preserved on the target virtual disk. Offsets for extents stored in the target virtual disk are converted to offsets for corresponding extents in the source virtual disk. A map of the extents for the source virtual disk can therefore be used to create, for deduplication, segments of data that are aligned to boundaries of the extents in the target virtual disk.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 13, 2013
    Applicant: SYMANTEC CORPORATION
    Inventors: Ashutosh Kanhaiya Bahadure, Carl James Appellof, Edward Michael Goble