Patents by Inventor Kazuki Itoh

Kazuki Itoh 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).

  • Patent number: 10693449
    Abstract: A switching circuit device includes high-side and low-side switching element circuits, and high-side and low-side drive circuits. The high-side switching element circuit includes a high-side switching element connected between an output terminal and a high-voltage terminal of a high voltage source. The low-side switching element circuit includes a low-side switching element connected between the output terminal and a reference potential terminal. The high-side drive circuit turns on the high-side switching element. The low-side drive circuit turns on the low-side switching element. The high-side drive circuit includes a bootstrap capacitor connected to a drive power source. The bootstrap capacitor is charged while the low-side switching element is ON. The high-side drive circuit applies a gate voltage to the high-side switching element while the low-side switching element is OFF. The gate voltage is defined by adding a voltage of the output terminal to a voltage of the bootstrap capacitor.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: June 23, 2020
    Assignee: TOHOKU UNIVERSITY
    Inventors: Kazuki Itoh, Tetsuo Endoh
  • Publication number: 20190334516
    Abstract: A switching circuit device includes high-side and low-side switching element circuits, and high-side and low-side drive circuits. The high-side switching element circuit includes a high-side switching element connected between an output terminal and a high-voltage terminal of a high voltage source. The low-side switching element circuit includes a low-side switching element connected between the output terminal and a reference potential terminal. The high-side drive circuit turns on the high-side switching element. The low-side drive circuit turns on the low-side switching element. The high-side drive circuit includes a bootstrap capacitor connected to a drive power source. The bootstrap capacitor is charged while the low-side switching element is ON. The high-side drive circuit applies a gate voltage to the high-side switching element while the low-side switching element is OFF. The gate voltage is defined by adding a voltage of the output terminal to a voltage of the bootstrap capacitor.
    Type: Application
    Filed: September 15, 2017
    Publication date: October 31, 2019
    Applicant: Tohoku University
    Inventors: Kazuki Itoh, Tetsuo Endoh
  • Patent number: 6515697
    Abstract: In a digital camera, the state of copying is monitored and displayed when image data stored in a main memory are copied to an auxiliary memory, and data for preventing illegal copying are added thereto, in order to improve operability and reliability. When a copying mode is designated, the image data stored in the main memory MM upon photographing are transferred and copied to a detachable auxiliary memory MC by way of a bus B. During copying, the number of uncopied image data in the main memory MM and the number of image data which can be copied to the auxiliary memory MC are sequentially displayed in a liquid crystal display section 30, while each image data is copied with management data indicative of the date and time of copying or the like added thereto. Also, flag data indicating that copying is in progress and that copying has been completed are added thereto.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: February 4, 2003
    Assignee: Chinon Kabushiki Kaisha
    Inventors: Masayuki Yamada, Urato Aruga, Kazuki Itoh
  • Patent number: 6429896
    Abstract: This patent discloses a digital camera and an external device for both storing digital images from the camera and controlling certain camera functions. The external device may be either directly attached to the camera or remotely attached by way of a cable or similar device. The external device may also include a means for recording images onto removable recording media. The external device may also include a button for sending instructions to the camera to allow for switching between image resolution modes, flash lighting modes, and autofocusing modes.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: August 6, 2002
    Assignee: Chinon Kabushiki Kaisha
    Inventors: Urato Aruga, Kazuki Itoh
  • Patent number: 6239837
    Abstract: In a digital camera, the state of copying is monitored and displayed when image data stored in a main memory are copied to an auxiliary memory, and data for preventing illegal copying are added thereto, in order to improve operability and reliability. When a copying mode is designated, the image data stored in the main memory MM upon photographing are transferred and copied to a detachable auxiliary memory MC by way of a bus B. During copying, the number of uncopied image data in the main memory MM and the number of image data which can be copied to the auxiliary memory MC are sequentially displayed in a liquid crystal display section 30, while each image data is copied with management data indicative of the date and time of copying or the like added thereto. Also, flag data indicating that copying is in progress and that copying has been completed are added thereto.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: May 29, 2001
    Inventors: Masayuki Yamada, Urato Aruga, Kazuki Itoh
  • Patent number: 6211909
    Abstract: This camera has a plurality of light-emitting devices such as LED, which flicker in response to the number of shots which can be photographed. Also, while having no liquid crystal display for showing an error when it occurs, this camera has a non-volatile memory for writing an error code. When the camera is connected to a computer, the error code can be displayed on the computer screen.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: April 3, 2001
    Assignee: Chinon Kabushiki Kaisha
    Inventors: Yoshihiro Maeshima, Kazuki Itoh, Urato Aruga, Hideo Nakamura
  • Patent number: 5874987
    Abstract: A recording system technology for image data for stereoscopic viewing of electronic animation, that is inexpensive and simple, includes a left-eye image and a right-eye image for stereoscopic viewing that are both sized to take up one frame in display. An optical image conversion device is in front of a camera. The left-eye and right-eye images are arranged side by side, and the optical image conversion device optically reduces the width of the images by half to form two virtual images. The virtual images are projected to the camera so that they are distinctly arranged side by side within one frame of the display. The resulting image is recorded using, for example, CCD technology.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: February 23, 1999
    Assignees: Shinmei Electric Co., Ltd., Kazuki Itoh
    Inventor: Kazuki Itoh