Patents by Inventor Mikihito Kimishima

Mikihito Kimishima 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).

  • Electronic endoscope system with color-balance alteration process
    Patent number: 6967673
    Abstract: An electronic endoscope system includes a video scope having a solid-state image sensor for successively producing a frame of color image-pixel signals, and an image-signal processor for producing a color video signal based on the frame of color image-pixel signals. A calculation system calculates a difference value between a value of a central single-color image-pixel signal and an average of values of one selected from single-color image-pixel signals surrounding the central single-color image-pixel signal. A color-balance alteration system alters the value of the central single-color image-pixel signal based on the difference value calculated by the calculation system. A selection system performs the selection of the circumferential image-pixel signals such that the circumferential image-pixel signals to be selected are farther from the central image-pixel signal, as a spatial frequency of an endoscope image to be reproduced based on the color video signals is lower.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: November 22, 2005
    Assignee: PENTAX Corporation
    Inventors: Ryo Ozawa, Mikihito Kimishima
  • Electronic endoscope system with color-balance alteration process
    Publication number: 20030030722
    Abstract: An electronic endoscope system includes a video scope having a solid-state image sensor for successively producing a frame of color image-pixel signals, and an image-signal processor for producing a color video signal based on the frame of color image-pixel signals. A calculation system calculates a difference value between a value of a central single-color image-pixel signal and an average of values of one selected from single-color image-pixel signals surrounding the central single-color image-pixel signal. A color-balance alteration system alters the value of the central single-color image-pixel signal based on the difference value calculated by the calculation system. A selection system performs the selection of the circumferential image-pixel signals such that the circumferential image-pixel signals to be selected are farther from the central image-pixel signal, as a spatial frequency of an endoscope image to be reproduced based on the color video signals is lower.
    Type: Application
    Filed: June 25, 2002
    Publication date: February 13, 2003
    Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Ryo Ozawa, Mikihito Kimishima