Patents by Inventor Wei-Zhen Zhu

Wei-Zhen Zhu 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).

  • Systems and methods for migrating an object from a deduplication store to an external domain
    Patent number: 8615498
    Abstract: A computer-implemented method for migrating an object from a deduplication store to an external domain in an external media is described. A deduplication store (dstore) deduplication map (dmap) is retrieved from a dstore for an object stored in the dstore. A determination is made as to whether an external dmap exists in the external domain for an object referenced in the dstore dmap. If the external dmap exists, a determination is made as to whether data referenced in the dstore dmap exist in the external dmap. If the referenced data do not exist, the referenced data is extracted from the dstore to the external domain. If the external dmap does not exist, the object and the associated dmap are extracted from the dstore to the external domain.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: December 24, 2013
    Assignee: Symantec Corporation
    Inventors: Graham Bromley, Thomas Clifford, Jon Genda, Jian Jun Lu, James Ohr, Yi Qu, Weibao Wu, Wei-Zhen Zhu