Patents by Inventor Toshiharu Oi

Toshiharu Oi 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).

  • Autofocus control circuit, autofocus control method, and image pickup apparatus
    Patent number: 8508653
    Abstract: An autofocus control circuit, includes a focusing unit determining an in-focus location of a subject image based on a contrast evaluation value of a compressed image data under a first environment, and based on a size of the compressed image data under a second environment.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 13, 2013
    Assignee: Renesas Electronics Corporation
    Inventor: Toshiharu Oi
  • Autofocus control circuit, autofocus control method, and image pickup apparatus
    Publication number: 20120019710
    Abstract: An autofocus control circuit, includes a focusing unit determining an in-focus location of a subject image based on a contrast evaluation value of a compressed image data under a first environment, and based on a size of the compressed image data under a second environment.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 26, 2012
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventor: Toshiharu Oi
  • Autofocus control circuit, autofocus control method and image pickup apparatus
    Patent number: 8054372
    Abstract: An image compression circuit provided in an image pickup apparatus for generation of compressed image data for record can also serve as an evaluation value calculation circuit that generates a contrast evaluation value to be used as an index for finding an in-focus location for an autofocus process. The image pickup apparatus includes a shooting optical system, an image pickup unit, an image compression unit, and a focusing unit. The image pickup unit has an image pickup device that performs photoelectric conversion of a subject image formed by the shooting optical system, and performs A/D conversion of a captured image obtained by the image pickup device to generate digital captured image data. The image compression unit performs an image compression process on the digital captured image data to generate compressed image data for focusing.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: November 8, 2011
    Assignee: Renesas Electronics Corporation
    Inventor: Toshiharu Oi
  • Autofocus control circuit, autofocus control method and image pickup apparatus
    Publication number: 20090109320
    Abstract: An image compression circuit provided in an image pickup apparatus for generation of compressed image data for record can also serve as an evaluation value calculation circuit that generates a contrast evaluation value to be used as an index for finding an in-focus location for an autofocus process. The image pickup apparatus includes a shooting optical system, an image pickup unit, an image compression unit, and a focusing unit. The image pickup unit has an image pickup device that performs photoelectric conversion of a subject image formed by the shooting optical system, and performs A/D conversion of a captured image obtained by the image pickup device to generate digital captured image data. The image compression unit performs an image compression process on the digital captured image data to generate compressed image data for focusing.
    Type: Application
    Filed: October 2, 2008
    Publication date: April 30, 2009
    Applicant: NEC Electronics Corporation
    Inventor: Toshiharu Oi