Patents by Inventor Katsushi Uchiyama

Katsushi Uchiyama 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).

  • Nonvolatile semiconductor storage device and method of managing the same
    Patent number: 7925821
    Abstract: A nonvolatile semiconductor storage device and method of managing the same are provided. The nonvolatile semiconductor storage device includes a nonvolatile memory configured to be electrically rewritable; and a controller configured to control an access area of the nonvolatile memory on the basis of information associated with management of the nonvolatile memory. The controller partitions an area of the nonvolatile memory for management and numbers management information for managing data for each area and a map of the management information in an integrated manner to write the numbered management information and map to the nonvolatile memory, thereby determining whether the management information and the map are normal on the basis of the numbering.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: April 12, 2011
    Assignee: Sony Corporation
    Inventors: Takeshi Ishimoto, Daisuke Yoshioka, Hiroshi Kawanobe, Katsushi Uchiyama
  • NONVOLATILE SEMICONDUCTOR STORAGE DEVICE AND METHOD OF MANAGING THE SAME
    Publication number: 20080189476
    Abstract: A nonvolatile semiconductor storage device and method of managing the same are provided. The nonvolatile semiconductor storage device includes a nonvolatile memory configured to be electrically rewritable; and a controller configured to control an access area of the nonvolatile memory on the basis of information associated with management of the nonvolatile memory. The controller partitions an area of the nonvolatile memory for management and numbers management information for managing data for each area and a map of the management information in an integrated manner to write the numbered management information and map to the nonvolatile memory, thereby determining whether the management information and the map are normal on the basis of the numbering.
    Type: Application
    Filed: January 23, 2008
    Publication date: August 7, 2008
    Applicant: SONY CORPORATION
    Inventors: Takeshi Ishimoto, Daisuke Yoshioka, Hiroshi Kawanobe, Katsushi Uchiyama