Patents by Inventor Keizo Tashiro

Keizo Tashiro 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: 9185310
    Abstract: According to one embodiment, a solid-state imaging device includes an illuminance value calculating unit and an illuminance value output unit. The illuminance value calculating unit calculates an illuminance value based on an integration result of luminance values. The illuminance value output unit outputs the illuminance value calculated by the illuminance value calculating unit by setting, as a target, a subject image obtained through application of one of two or more illuminance measurement conditions. The two or more illuminance measurement conditions are set in advance by varying at least one of an electronic shutter time and an analog gain.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: November 10, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Teppei Nakano, Keizo Tashiro, Junichi Hosokawa, Naoto Mihara
  • Patent number: 9092845
    Abstract: According to one embodiment, a condition judging unit judges whether a target pixel corresponds to a defect condition based on a signal of the target pixel and a signal of a horizontal peripheral pixel. A signal substituting unit performs signal substitution on the target pixel corresponding to the defect condition. When the condition judging unit judges that at least one of a vertical peripheral pixel and an oblique peripheral pixel corresponds to the defect condition, the signal substituting unit stops the signal substitution on the target pixel.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: July 28, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Teppei Nakano, Keizo Tashiro
  • Publication number: 20140263960
    Abstract: According to one embodiment, a solid-state imaging device includes a pixel array, a digital gain circuit, and a shading correction circuit. In the pixel array, pixels that accumulate photoelectrically converted charge are arranged in a matrix and the pixel array can control an exposure time of the pixels for each line. The digital gain circuit adjusts a digital gain of an output signal of the pixel array. The shading correction circuit corrects shading of the pixel array by controlling the exposure time of the pixels and the digital gain.
    Type: Application
    Filed: November 22, 2013
    Publication date: September 18, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yukiyasu TATSUZAWA, Keizo Tashiro, Tatsuji Ashitani, Motohiro Morisaki
  • Publication number: 20130229552
    Abstract: According to one embodiment, a solid-state imaging device includes an illuminance value calculating unit and an illuminance value output unit. The illuminance value calculating unit calculates an illuminance value based on an integration result of luminance values. The illuminance value output unit outputs the illuminance value calculated by the illuminance value calculating unit by setting, as a target, a subject image obtained through application of one of two or more illuminance measurement conditions. The two or more illuminance measurement conditions are set in advance by varying at least one of an electronic shutter time and an analog gain.
    Type: Application
    Filed: January 30, 2013
    Publication date: September 5, 2013
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Teppei NAKANO, Keizo Tashiro, Junichi Hosokawa, Naoto Mihara
  • Patent number: 8330838
    Abstract: A shading correcting device includes a correction-coefficient interpolation unit that calculates a color shading correction coefficient used at a position of a pixel at which the color shading correction coefficient is not set among pixels in an image signal by an interpolation process using a color shading correction coefficient set at a predetermined position. A color shading correction coefficient sent to the correction-coefficient interpolation unit is a color shading correction coefficient that is for a first color and corresponds to a pixel value of a second color adjacent to a pixel of the first color.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: December 11, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Teppei Nakano, Keizo Tashiro
  • Patent number: 8077253
    Abstract: An analog signal photo-electrically converted in a pixel of a light receiving area is converted to a digital signal by an ADC. The digital signal is processed by a digital signal processing circuit, and then, successively output as a digital video signal. The digital signal processing circuit has a first signal processing block for detecting and correcting a pixel defect and preventing a noise, and a second signal processing block for restoring apparent resolution lost by the processing by the first signal processing block.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: December 13, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Junichi Hosokawa, Yuuki Koguchi, Keizo Tashiro, Teppei Nakano
  • Publication number: 20100097504
    Abstract: A shading correcting device includes a correction-coefficient interpolation unit that calculates a color shading correction coefficient used at a position of a pixel at which the color shading correction coefficient is not set among pixels in an image signal by an interpolation process using a color shading correction coefficient set at a predetermined position. A color shading correction coefficient sent to the correction-coefficient interpolation unit is a color shading correction coefficient that is for a first color and corresponds to a pixel value of a second color adjacent to a pixel of the first color.
    Type: Application
    Filed: September 10, 2009
    Publication date: April 22, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Teppei NAKANO, Keizo Tashiro
  • Publication number: 20090310000
    Abstract: An analog signal photo-electrically converted in a pixel of a light receiving area is converted to a digital signal by an ADC. The digital signal is processed by a digital signal processing circuit, and then, successively output as a digital video signal. The digital signal processing circuit has a first signal processing block for detecting and correcting a pixel defect and preventing a noise, and a second signal processing block for restoring apparent resolution lost by the processing by the first signal processing block.
    Type: Application
    Filed: June 16, 2009
    Publication date: December 17, 2009
    Inventors: Junichi HOSOKAWA, Yuuki KOGUCHI, Keizo TASHIRO, Teppei NAKANO