Patents by Inventor Koji OOIWA

Koji OOIWA 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).

  • Voltage generation circuit and semiconductor device
    Patent number: 12013712
    Abstract: A voltage generation circuit includes a voltage dividing circuit configured to divide applied voltage; a bias circuit configured to generate voltage by dividing power source voltage supplied through a first input terminal; and a power source switching control circuit configured to perform first processing of preventing voltage supply from a power source line to the voltage dividing circuit, connecting the power source line to a first output terminal, and connecting a ground to a second output terminal, second processing of connecting the power source line and the ground to the voltage dividing circuit, and third processing of obtaining voltage through the voltage dividing circuit by supplying voltage generated by the bias circuit to the first output terminal and supplying the voltage generated by the bias circuit to the voltage dividing circuit.
    Type: Grant
    Filed: April 3, 2023
    Date of Patent: June 18, 2024
    Assignee: KIOXIA CORPORATION
    Inventor: Koji Ooiwa
  • VOLTAGE GENERATION CIRCUIT AND SEMICONDUCTOR DEVICE
    Publication number: 20230236618
    Abstract: A voltage generation circuit of an embodiment includes: a voltage dividing circuit configured to divide applied voltage; a bias circuit configured to generate voltage by dividing power source voltage supplied through a first input terminal; and a power source switching control circuit configured to perform first processing of preventing voltage supply from a power source line to the voltage dividing circuit, connecting the power source line to a first output terminal, and connecting a ground to a second output terminal, second processing of connecting the power source line and the ground to the voltage dividing circuit, and third processing of obtaining voltage through the voltage dividing circuit by supplying voltage generated by the bias circuit to the first output terminal and supplying the voltage generated by the bias circuit to the voltage dividing circuit.
    Type: Application
    Filed: April 3, 2023
    Publication date: July 27, 2023
    Applicant: KIOXIA CORPORATION
    Inventor: Koji OOIWA
  • Voltage generation circuit and semiconductor device
    Patent number: 11681318
    Abstract: A voltage generation circuit includes a voltage dividing circuit configured to divide an applied voltage; a bias circuit configured to generate a voltage by dividing a power source voltage supplied through a first input terminal; and a power source switching control circuit. The power source switching control circuit is configured to perform first processing of preventing a voltage supply from a power source line to the voltage dividing circuit, connecting the power source line to a first output terminal, and connecting a ground to a second output terminal, second processing of connecting the power source line and the ground to the voltage dividing circuit, and third processing of obtaining a voltage through the voltage dividing circuit by supplying a voltage generated by the bias circuit to the first output terminal and supplying the voltage generated by the bias circuit to the voltage dividing circuit.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: June 20, 2023
    Assignee: Kioxia Corporation
    Inventor: Koji Ooiwa
  • VOLTAGE GENERATION CIRCUIT AND SEMICONDUCTOR DEVICE
    Publication number: 20220300024
    Abstract: A voltage generation circuit of an embodiment includes: a voltage dividing circuit configured to divide applied voltage; a bias circuit configured to generate voltage by dividing power source voltage supplied through a first input terminal; and a power source switching control circuit configured to perform first processing of preventing voltage supply from a power source line to the voltage dividing circuit, connecting the power source line to a first output terminal, and connecting a ground to a second output terminal, second processing of connecting the power source line and the ground to the voltage dividing circuit, and third processing of obtaining voltage through the voltage dividing circuit by supplying voltage generated by the bias circuit to the first output terminal and supplying the voltage generated by the bias circuit to the voltage dividing circuit.
    Type: Application
    Filed: September 7, 2021
    Publication date: September 22, 2022
    Applicant: Kioxia Corporation
    Inventor: Koji OOIWA