Patents by Inventor Eric Tamura

Eric Tamura 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).

  • Mount-time unmapping of unused logical addresses in non-volatile memory systems
    Patent number: 9727570
    Abstract: Systems and methods are provided for unmapping unused logical addresses at mount-time of a file system. An electronic device, which includes a non-volatile memory (“NVM”), may implement a file system that, at mount-time of the NVM, identifies all of the logical addresses associated with the NVM that are unallocated. The file system may then pass this information on to a NVM manager, such as in one or more unmap requests. This can ensure that the NVM manager does not maintain data associated with a logical address that is no longer needed by the file system.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: August 8, 2017
    Assignee: APPLE INC.
    Inventors: Daniel J. Post, Eric Tamura, Vadim Khmelnitsky, Nir J. Wakrat, Matthew Byom
  • Systems and methods for trimming logical block addresses corresponding to a data structure residing in non-volatile memory
    Patent number: 8661189
    Abstract: Systems and methods for trimming LBAs are provided. The LBAs can be trimmed from a file and from an NVM interface that maintains a logical-to-physical translation of the file's LBAs and controls management of the file's contents stored on non-volatile memory (“NVM”). The file can be any suitable file that has any number of associated LBAs. In addition, the file can be linked to one or more data chunks stored in the NVM, each data chunk associated with LBAs in the file. When a data chunk is retrieved or read from the NVM, that chunk no longer needs to be maintained in the NVM. Accordingly, after the data chunk is retrieved from the NVM and provided to an appropriate destination, the LBAs associated with the retrieved data chunk can be trimmed.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: February 25, 2014
    Assignee: Apple Inc.
    Inventors: Daniel J. Post, Eric Tamura, Matthew Byom, Neil Crane, Kenneth Herman, Francois Barbou-des-Place
  • MOUNT-TIME UNMAPPING OF UNUSED LOGICAL ADDRESSES IN NON-VOLATILE MEMORY SYSTEMS
    Publication number: 20120311298
    Abstract: Systems and methods are provided for unmapping unused logical addresses at mount-time of a file system. An electronic device, which includes a non-volatile memory (“NVM”), may implement a file system that, at mount-time of the NVM, identifies all of the logical addresses associated with the NVM that are unallocated. The file system may then pass this information on to a NVM manager, such as in one or more unmap requests. This can ensure that the NVM manager does not maintain data associated with a logical address that is no longer needed by the file system.
    Type: Application
    Filed: June 3, 2011
    Publication date: December 6, 2012
    Applicant: Apple Inc.
    Inventors: Daniel J. Post, Eric Tamura, Vadim Khmelnitsky, Nir J. Wakrat, Matthew Byom
  • SYSTEMS AND METHODS FOR TRIMMING LOGICAL BLOCK ADDRESSES CORRESPONDING TO A DATA STRUCTURE RESIDING IN NON-VOLATILE MEMORY
    Publication number: 20120054465
    Abstract: Systems and methods for trimming LBAs are provided. The LBAs can be trimmed from a file and from an NVM interface that maintains a logical-to-physical translation of the file's LBAs and controls management of the file's contents stored on non-volatile memory (“NVM”). The file can be any suitable file that has any number of associated LBAs. In addition, the file can be linked to one or more data chunks stored in the NVM, each data chunk associated with LBAs in the file. When a data chunk is retrieved or read from the NVM, that chunk no longer needs to be maintained in the NVM. Accordingly, after the data chunk is retrieved from the NVM and provided to an appropriate destination, the LBAs associated with the retrieved data chunk can be trimmed.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 1, 2012
    Applicant: Apple Inc.
    Inventors: Daniel J. Post, Eric Tamura, Matthew Byom, Neil Crane, Kenneth Herman, Francois Barbou-des-Place