Patents by Inventor Cheng Hai ZHU

Cheng Hai 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).

  • Patent number: 10877855
    Abstract: Techniques for data backup and restoration are disclosed. In one embodiment, the techniques may be realized as a method including generating a first backup representing a database at a first time; after the first backup, generating a plurality of journal entries, each journal entry representing a change to the database made after the first time; and restoring the database from the first backup and the plurality of journal entries, the restored database including the changes represented by the entries.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: December 29, 2020
    Assignee: Veritas Technologies LLC
    Inventors: Dongxu Sun, Cheng Hai Zhu, Cheng Shan, Haibin She, Xianbo Zhang
  • Patent number: 10719256
    Abstract: Disclosed herein are methods, systems, and processes to improve backup and restore performance in deduplication storage environments. A metadata stream that includes data segment offsets that are associated with data segments of a previous backup image and indicate data segment boundaries is received. An offset for an include operation is determined. The include operation references one or more data segments, and is part of a request to perform a backup operation. The backup operation is performed by modifying the include operation, if the offset involves one or more partial data segments.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: July 21, 2020
    Assignee: Veritas Technologies LLC
    Inventors: Lei Zhang, Peng Zhang, Tao Liu, Cheng Wan, Cheng Hai Zhu, Guang Yang
  • Publication number: 20160179631
    Abstract: Techniques for data backup and restoration are disclosed. In one embodiment, the techniques may be realized as a method including generating a first backup representing a database at a first time; after the first backup, generating a plurality of journal entries, each journal entry representing a change to the database made after the first time; and restoring the database from the first backup and the plurality of journal entries, the restored database including the changes represented by the entries.
    Type: Application
    Filed: December 19, 2014
    Publication date: June 23, 2016
    Applicant: SYMANTEC CORPORATION
    Inventors: Dongxu SUN, Cheng Hai ZHU, Cheng SHAN, Haibin SHE, Xianbo ZHANG