Patents by Inventor Hiroko Suyama

Hiroko Suyama 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).

  • Semiconductor device
    Patent number: 8621643
    Abstract: A semiconductor device includes a nonvolatile memory, and an interface configured to transfer data to and from the nonvolatile memory. The interface includes a security logic unit which controls a security level for the data written to the nonvolatile memory, in accordance with a plurality of preset security codes and a lock code that is written to a specific area in the nonvolatile memory.
    Type: Grant
    Filed: December 11, 2011
    Date of Patent: December 31, 2013
    Assignee: Spansion LLC
    Inventors: Hiroko Suyama, Kenichiro Shibata, Hiroki Wakamatsu
  • SEMICONDUCTOR DEVICE
    Publication number: 20120192282
    Abstract: A semiconductor device includes a nonvolatile memory, and an interface configured to transfer data to and from the nonvolatile memory. The interface includes a security logic unit which controls a security level for the data written to the nonvolatile memory, in accordance with a plurality of preset security codes and a lock code that is written to a specific area in the nonvolatile memory.
    Type: Application
    Filed: December 11, 2011
    Publication date: July 26, 2012
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventors: Hiroko Suyama, Kenichiro Shibata, Hiroki Wakamatsu