Patents by Inventor Ryugi Yoshimura

Ryugi Yoshimura 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).

  • DA converter, solid-state imaging device, and camera system
    Patent number: 8274416
    Abstract: A digital-to-analog (DA) converter includes: an analog output section that generates an output current corresponding to a value of a digital signal in response to a bias voltage and outputs an analog signal which is obtained from the output current by current-to-voltage conversion; a current source; a current control section that converts a current from the current source to a voltage signal and outputs the voltage signal as the bias voltage; and a sample and hold circuit section that samples and holds the bias voltage from the current control section and supplies the held bias voltage to the analog output section.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: September 25, 2012
    Assignee: Sony Corporation
    Inventors: Takashi Kawaguchi, Ryugi Yoshimura
  • DA CONVERTER, SOLID-STATE IMAGING DEVICE, AND CAMERA SYSTEM
    Publication number: 20100271521
    Abstract: A digital-to-analog (DA) converter includes: an analog output section that generates an output current corresponding to a value of a digital signal in response to a bias voltage and outputs an analog signal which is obtained from the output current by current-to-voltage conversion; a current source; a current control section that converts a current from the current source to a voltage signal and outputs the voltage signal as the bias voltage; and a sample and hold circuit section that samples and holds the bias voltage from the current control section and supplies the held bias voltage to the analog output section.
    Type: Application
    Filed: April 16, 2010
    Publication date: October 28, 2010
    Applicant: SONY CORPORATION
    Inventors: Takashi Kawaguchi, Ryugi Yoshimura