Patents by Inventor Zhen-hua Song

Zhen-hua Song 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).

  • Shrinking virtual hard disk image
    Patent number: 10331349
    Abstract: The present disclosure introduces a method and an apparatus of shrinking virtual hard disk image file. The present techniques search a garbage data block in a file and revise a record of the garbage data block in a block allocation table (BAT). The file includes one or more data blocks and a BAT that records information of each data block. The garbage data block is a data block that does not store effective data. The present techniques move an effective data block subsequent to the garbage data block, revise a record of the effective data block in the BAT after the moving, and shrink a size of the file after the movement.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: June 25, 2019
    Inventors: Zhen-hua Song, Qian Wang, Jia Wan, Weicai Chen
  • Shrinking virtual hard disk image
    Patent number: 9501225
    Abstract: The present disclosure introduces a method and an apparatus of shrinking virtual hard disk image file. The present techniques search a garbage data block in a file and revise a record of the garbage data block in a block allocation table (BAT). The file includes one or more data blocks and a BAT that records information of each data block. The garbage data block is a data block that does not store effective data. The present techniques move an effective data block subsequent to the garbage data block, revise a record of the effective data block in the BAT after the moving, and shrink a size of the file after the movement.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: November 22, 2016
    Assignee: Alibaba Group Holding Limited
    Inventors: Zhen-hua Song, Weicai Chen, Qian Wang, Jia Wan
  • Shrinking Virtual Hard Disk Image
    Publication number: 20160335018
    Abstract: The present disclosure introduces a method and an apparatus of shrinking virtual hard disk image file. The present techniques search a garbage data block in a file and revise a record of the garbage data block in a block allocation table (BAT). The file includes one or more data blocks and a BAT that records information of each data block. The garbage data block is a data block that does not store effective data. The present techniques move an effective data block subsequent to the garbage data block, revise a record of the effective data block in the BAT after the moving, and shrink a size of the file after the movement.
    Type: Application
    Filed: July 29, 2016
    Publication date: November 17, 2016
    Inventors: Zhen-hua Song, Qian Wang, Jia Wan, Weicai Chen
  • Shrinking Virtual Hard Disk Image
    Publication number: 20130041927
    Abstract: The present disclosure introduces a method and an apparatus of shrinking virtual hard disk image file. The present techniques search a garbage data block in a file and revise a record of the garbage data block in a block allocation table (BAT). The file includes one or more data blocks and a BAT that records information of each data block. The garbage data block is a data block that does not store effective data. The present techniques move an effective data block subsequent to the garbage data block, revise a record of the effective data block in the BAT after the moving, and shrink a size of the file after the movement.
    Type: Application
    Filed: August 10, 2012
    Publication date: February 14, 2013
    Applicant: Alibaba Group Holding Limited
    Inventors: Zhen-hua Song, Weicai Chen, Qian Wang, Jia Wan