Patents by Inventor Takashi YAMAGIWA

Takashi YAMAGIWA 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).

  • BIST for performing parallel and serial test on memories
    Patent number: 11721407
    Abstract: According to a certain embodiment, the semiconductor integrated circuit includes a plurality of memories and a first control circuit configured to control the plurality of memories. The first control circuit includes a first state transition circuit configured to execute at least one of write control and read control during an operation of the plurality of memories; and a second state transition circuit connected to the first state transition circuit, the second state transition circuit capable of causing the first state transition circuit to sequentially execute tests of the plurality of memories.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: August 8, 2023
    Assignee: Kioxia Corporation
    Inventor: Takashi Yamagiwa
  • SEMICONDUCTOR INTEGRATED CIRCUIT, DESIGN METHOD OF THE SEMICONDUCTOR INTEGRATED CIRCUIT, DESIGN SUPPORT SYSTEM OF THE SEMICONDUCTOR INTEGRATED CIRCUIT, AND NON-TRANSITORY COMPUTER READABLE MEDIUM
    Publication number: 20220246228
    Abstract: According to a certain embodiment, the semiconductor integrated circuit includes a plurality of memories and a first control circuit configured to control the plurality of memories. The first control circuit includes a first state transition circuit configured to execute at least one of write control and read control during an operation of the plurality of memories; and a second state transition circuit connected to the first state transition circuit, the second state transition circuit capable of causing the first state transition circuit to sequentially execute tests of the plurality of memories.
    Type: Application
    Filed: September 1, 2021
    Publication date: August 4, 2022
    Applicant: Kioxia Corporation
    Inventor: Takashi YAMAGIWA