Patents by Inventor Yuichi HIWASA

Yuichi HIWASA 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).

  • Circuit device, electronic device, and mobile body
    Patent number: 11474711
    Abstract: A circuit device 10 includes a register 30, an access control circuit 20 that controls access to a nonvolatile memory 70 and loads setting data of the circuit device 10 stored in the nonvolatile memory 70 in the register 30, and an error detection circuit 40. The access control circuit 20 performs a refresh operation that reloads the setting data stored in the nonvolatile memory 70 in the register 30. The error detection circuit 40 reads data for comparison that has been reloaded in the register 30 from the register 30, compares the data for comparison that was read with an expected value of the data for comparison, and performs access control error detection based on the comparison result.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: October 18, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masahiko Miura, Yuichi Hiwasa, Hironori Kobayashi
  • CIRCUIT DEVICE, ELECTRONIC DEVICE, AND MOBILE BODY
    Publication number: 20190369884
    Abstract: A circuit device 10 includes a register 30, an access control circuit 20 that controls access to a nonvolatile memory 70 and loads setting data of the circuit device 10 stored in the nonvolatile memory 70 in the register 30, and an error detection circuit 40. The access control circuit 20 performs a refresh operation that reloads the setting data stored in the nonvolatile memory 70 in the register 30. The error detection circuit 40 reads data for comparison that has been reloaded in the register 30 from the register 30, compares the data for comparison that was read with an expected value of the data for comparison, and performs access control error detection based on the comparison result.
    Type: Application
    Filed: May 28, 2019
    Publication date: December 5, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masahiko MIURA, Yuichi HIWASA, Hironori KOBAYASHI