Patents by Inventor Kento NISHIZAWA

Kento NISHIZAWA 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).

  • Actuator driver
    Patent number: 11218624
    Abstract: An image sensor includes a pixel array including multiple pixels. A lens is provided on an optical path of incident light to the image sensor. An actuator includes a coil, and supports positioning of the lens according to a driving signal applied to the coil. A position detection coil is arranged such that it magnetically couples with the coil of the actuator. An actuator driver supplies a pulse-shaped driving signal to the coil of the actuator driver. A position detection circuit generates a position detection signal that indicates the position of the lens based on an induced electromotive force that occurs in the position detection coil according to the driving signal, and feeds back the position detection signal to the actuator driver.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: January 4, 2022
    Assignees: ROHM CO., LTD., SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Akihito Saito, Tatsuya Ninomiya, Nobuo Kohmura, Kento Nishizawa, Tatsuro Shimizu, Takahiro Akahane, Go Asayama, Yuki Urano
  • ACTUATOR DRIVER
    Publication number: 20200374428
    Abstract: An image sensor includes a pixel array including multiple pixels. A lens is provided on an optical path of incident light to the image sensor. An actuator includes a coil, and supports positioning of the lens according to a driving signal applied to the coil. A position detection coil is arranged such that it magnetically couples with the coil of the actuator. An actuator driver supplies a pulse-shaped driving signal to the coil of the actuator driver. A position detection circuit generates a position detection signal that indicates the position of the lens based on an induced electromotive force that occurs in the position detection coil according to the driving signal, and feeds back the position detection signal to the actuator driver.
    Type: Application
    Filed: August 10, 2020
    Publication date: November 26, 2020
    Inventors: Akihito SAITO, Tatsuya NINOMIYA, Nobuo KOHMURA, Kento NISHIZAWA, Tatsuro SHIMIZU, Takahiro AKAHANE, Go ASAYAMA, Yuki URANO