Patents by Inventor Takayuki Iida

Takayuki Iida 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: 9943230
    Abstract: Even if the ratio between blue and green components of illumination light is changed, a plurality of types of blood vessels at different depths are reliably distinguished. A blue signal B, a green signal G, a red signal R is obtained by imaging the subject using a color CCD 44. A B/G image having a B/G ratio is generated. A superficial blood vessel extraction image is obtained by extracting a pixel, in which the B/G ratio is equal to or less than a boundary value Ls between the mucous membrane and the superficial blood vessel, from the B/G image. A medium-deep blood vessel extraction image is obtained by extracting a pixel, in which the B/G ratio is equal to or greater than a boundary value Ld between the mucous membrane and the medium-deep blood vessel. The boundary values Ls and Ld differ depending on the light amount ratio.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: April 17, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Toshihiko Kaku, Takayuki Iida
  • Patent number: 9918613
    Abstract: An observation object is imaged under irradiation with oxygen saturation level measurement light to obtain a first image signal, and the observation object is imaged under irradiation with white light to obtain a second image signal. A normal light image is produced from the second image signal. An oxygen saturation level is calculated from the first and second image signals. The calculated oxygen saturation level is imaged in an oxygen saturation image. By superimposing the normal light image on the oxygen saturation image, an emphasized oxygen saturation image is produced. In the emphasized oxygen saturation image, an abnormal area in which a calculation result of the oxygen saturation level is likely to be abnormal is emphasized by its brightness. The produced emphasized oxygen saturation image is displayed on a display device.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: March 20, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Takaaki Saito, Hiroshi Yamaguchi, Takayuki Iida
  • Patent number: 9788709
    Abstract: An endoscope system comprising an image signal acquisition unit acquiring an image signal by imaging a subject, and an irregularity image generation unit generating an irregularity image by extracting information of irregularities on the subject, the irregularity image generation unit includes a microstructure image generation section generating a microstructure image as the irregularity image by extracting a microstructure of a body tissue surface layer from the image signal, the image signal including image signals of a plurality of colors having information of different wavelength components, the microstructure image generation section includes a first brightness signal generation section generating a brightness signal showing an average brightness of the subject based on the image signals of the plurality of colors, and a first image generation section generating the microstructure image by extracting a pixel region, in which a pixel value exceeds a fixed threshold value, of the brightness signal as a mic
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: October 17, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Yamaguchi, Satoshi Ozawa, Takayuki Iida
  • Publication number: 20170183980
    Abstract: In one embodiment, a plant control apparatus is configured to control a power generating plant that includes a gas turbine configured to be driven by a gas, an exhaust heat recovery boiler configured to generate steam by using heat of an exhaust gas from the gas turbine, a temperature reducing apparatus configured to cool, through a cooling medium, the steam generated by the exhaust heat recovery boiler, and a steam turbine configured to be driven by the steam cooled by the temperature reducing apparatus. The plant control apparatus includes an output controller configured to control output of the gas turbine, and a temperature reduction controller configured to control a cooling operation of the steam by the temperature reducing apparatus while the output controller controls the output of the gas turbine.
    Type: Application
    Filed: December 12, 2016
    Publication date: June 29, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Takayuki IIDA, Masayuki TOBO, Toyohiro AKEBI
  • Patent number: 9675238
    Abstract: An endoscopic device that irradiates a plurality of illuminating lights having different spectrums from each other onto a subject at a front edge of an endoscope inserting module and captures the subject to obtain an observation image, includes an illuminating module that generates the plurality of illuminating lights, an imaging module that captures the subject and outputs an image signal of the observation image, a light intensity ratio control module that controls the illuminating module to irradiate the plurality of illuminating lights onto the subject with a set light intensity ratio by setting the light intensity ratio of the plurality of illuminating lights for every observation image, and a color tone correcting module that corrects the color tone of the image signal so as to obtain the observation image with substantially a same color tone even though the light intensity ratio is changed.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: June 13, 2017
    Assignee: FUJIFILM CORPORATION
    Inventors: Takayuki Iida, Toshihiko Kaku, Hiroshi Yamaguchi, Takaaki Saito
  • Patent number: 9629527
    Abstract: Broadband light BB and narrowband light NB are simultaneously irradiated to a subject. A blue signal B, a green signal G, and a red signal R are obtained by imaging the subject using a color CCD 33. A base image is generated from the signals B, G, and R of three colors. A B/G image having a B/G ratio is generated. A superficial blood vessel extraction image is obtained by extracting a pixel, in which the B/G ratio is equal to or less than a boundary value Ls between the mucous membrane and the superficial blood vessel, from the B/G image. A medium-deep blood vessel extraction image is obtained by extracting a pixel, in which the B/G ratio is equal to or greater than a boundary value Ld between the mucous membrane and the medium-deep blood vessel. The boundary values Ls and Ld differ depending on each observation mode.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: April 25, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Toshihiko Kaku, Takayuki Iida
  • Patent number: 9596982
    Abstract: A blue signal B, a green signal G, and a red signal R are obtained by imagining a subject illuminated with white light W using a color CCD 44. Based on these signals B, G, and R, a normal light image in which a wavelength component of a visible light region is included is generated. Based on the signals B, G, and R, a brightness signal I ((B+G+R)/3) showing the average brightness of the subject is generated. A pixel region exceeding the fixed threshold value Th1 of the brightness signal I is extracted as a superficial microstructure P, such as a pit pattern. A microstructure enhancement image 72 is generated by combining the normal light image with a superficial microstructure image 70 obtained by extracting the superficial microstructure P. The generated microstructure and blood vessel enhancement image 72 is displayed on a monitor 14.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: March 21, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Yamaguchi, Satoshi Ozawa, Takayuki Iida
  • Patent number: 9532740
    Abstract: An oxygen saturation level of hemoglobin in blood is correctly acquired without lowering a frame rate. A subject body illuminated with white light W is imaged by a color CCD to obtain signals Bs1, Gs1 and Rs1. The subject body is illuminated with blue narrow band light BN of which absorption coefficient is changed by a change in the oxygen saturation level of the hemoglobin in blood, and imaged by the color CCD to obtain signals Bs2, Gs2 and Rs2. The signal Bs2 is divided by the signal Gs1 to determine a normalized signal Bs2/Gs1. The oxygen saturation level of blood vessels of the surface of body tissue is obtained according to the normalized signal Bs2/Gs1. The oxygen saturation level is visualized in a pseudo color, to form an oxygen saturation level image.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: January 3, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Takaaki Saito, Hiroshi Yamaguchi, Takayuki Iida
  • Patent number: 9526408
    Abstract: A light source device of an electronic endoscope system has first and second semiconductor lasers. In a vascular observation mode, one of the semiconductor lasers is used in a full light state (100% rated output) while the other is used in a reduced light state (for example, 10% rated output). First and second images of an internal body portion are captured with a color imaging device under illumination of two patterns, respectively. Correlation operation of pixel values of three colors is performed between the two images. Noise components, caused by the first or second semiconductor lasers in the light reduced state, are removed from the first and second images. An oxygen saturation level of blood in a blood vessel is calculated using the first and second images with the noise components removed.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: December 27, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Yamaguchi, Takaaki Saito, Takayuki Iida
  • Patent number: 9232883
    Abstract: To provide an endoscope apparatus in which the observation image can be varied continuously as the observation magnification is varied by a zoom magnification varying manipulation so that an observation image suitable for an endoscope diagnosis is obtained at each observation magnification, and to thereby prevent the operator from feeling uncomfortable and increase the accuracy of a diagnosis. An endoscope apparatus is equipped with illuminating unit having plural light sources which generate light beams having different spectra, for illuminating an observation subject; imaging unit for imaging the observation subject; observation magnification varying unit for varying observation magnification of the imaging of the imaging unit; and light quantity ratio varying unit for continuously varying an emission light quantity ratio between the plural light sources according to the observation magnification that is set by the observation magnification varying unit.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: January 12, 2016
    Assignee: FUJIFILM CORPORATION
    Inventors: Satoshi Ozawa, Takayuki Iida, Yasuhiro Minetoma, Akihiko Erikawa
  • Patent number: 9167960
    Abstract: First and second white light is generated by excitations of phosphors with first and second laser beams having center wavelengths of 473 nm and 445 nm, respectively. The first and second white light is applied, in respective frames, sequentially to a region of interest in a subject. A color image sensor images the region of interest in the each frame. Based on a shift amount, calculated from green signals of first and second frames, between images, an image of a blue signal of the first frame is moved to be aligned with an image of a green signal and an image of a red signal of the second frame. After the alignment, an oxygen saturation image representing an oxygen saturation level of hemoglobin in blood is produced from the blue signal of the first frame and green and red signals of the second frame.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: October 27, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Yamaguchi, Takaaki Saito, Takayuki Iida
  • Patent number: 9141706
    Abstract: According to one embodiment, a region-of-interest extraction apparatus includes following units. The acquisition unit acquires a structured document including elements. The first extraction unit extracts block regions including specific elements, from the structured document. The second extraction unit extracts, as a display region, parts of the elements being displayed on a display screen, from the structured document. The third extraction unit extracts a region of interest, in which a user is interested, from the structured document, based on relations between the block regions and the display region.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: September 22, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masayuki Okamoto, Nayuko Watanabe, Masaaki Kikuchi, Takayuki Iida
  • Patent number: 9113787
    Abstract: In an endoscope system, rays of different wavelength bands are sequentially projected toward a target site of a test subject, to obtain image signals from the reflected rays. Reflection spectra are calculated from the image signals and subjected to a multi-regression analysis in combination with absorption spectra of those objects which are relevant to the inspection, such as blood or hemoglobin in the target site, and absorption spectra of irrelevant objects other than the relevant objects, such as bile or staining materials. Spectral components of the irrelevant objects in the reflection spectra are determined through the multi-regression analysis, and are eliminated from the reflection spectra, providing second reflection spectra. A couple of images are produced and displayed on the basis of the first reflection spectra from which the spectral components of the irrelevant objects are not eliminated and the second reflection spectra.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: August 25, 2015
    Assignee: FUJIFILM CORPORATION
    Inventors: Kiyohiro Maeda, Takayuki Iida
  • Publication number: 20150216400
    Abstract: An endoscopic device that irradiates a plurality of illuminating lights having different spectrums from each other onto a subject at a front edge of an endoscope inserting module and captures the subject to obtain an observation image, includes an illuminating module that generates the plurality of illuminating lights, an imaging module that captures the subject and outputs an image signal of the observation image, a light intensity ratio control module that controls the illuminating module to irradiate the plurality of illuminating lights onto the subject with a set light intensity ratio by setting the light intensity ratio of the plurality of illuminating lights for every observation image, and a color tone correcting module that corrects the color tone of the image signal so as to obtain the observation image with substantially a same color tone even though the light intensity ratio is changed.
    Type: Application
    Filed: April 14, 2015
    Publication date: August 6, 2015
    Inventors: Takayuki IIDA, Toshihiko Kaku, Hiroshi Yamaguchi, Takaaki Saito
  • Publication number: 20150121177
    Abstract: According to one embodiment, an electronic device includes a receiver configured to receive data of an electronic book, and a display controller configured to display a slider, and to display a designated page in response to a designation by the slider. The display controller is configured to display a first thumbnail in accordance with a first position corresponding to the first page, the first thumbnail including at least one of a part of first information, relating to the first page, included in a page of a table of contents and second information of an illustration of the first page or a page close to the first page.
    Type: Application
    Filed: April 25, 2014
    Publication date: April 30, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Takayuki Iida, Makito Ogura, Kensuke Horiuchi
  • Patent number: 9002816
    Abstract: According to one embodiment, an information processing apparatus comprises a content display, an extraction module, a storage, and a keyword display. The content display is configured to display a content. The extraction module is configured to extract a keyword from the content displayed by the content display. The storage is configured to store a first keyword extracted by the extraction module. The keyword display is configured to display the first keyword extracted by the extraction module and a second keyword read from the storage.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: April 7, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Sumi Omura, Takayuki Iida, Kensuke Horiuchi, Kentaro Nagahama
  • Patent number: 8972842
    Abstract: According to one embodiment, a method of processing data for an information processing apparatus includes extracting, displaying, transmitting and updating. The extracting extracts keywords from a Web page being displayed by a browser. The displaying displays the extracted keywords. The transmitting transmits a keyword and attribute data associate with the keyword to a retrieval site, if the keyword is selected from the displayed keywords. The updating updates the displayed keywords if the browser acquires the Web page.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: March 3, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kentaro Nagahama, Sumi Omura, Kensuke Horiuchi, Takayuki Iida
  • Patent number: 8876706
    Abstract: According to an aspect of the invention, an endoscopic apparatus outputs illuminating light from a tip of an endoscope inserting module to a subject and detects a reflected light from the subject to obtain an image signal of the subject. The endoscopic apparatus includes a first light source, a second light source, a target light intensity setting module, a light intensity ratio setting module, an information storing module, an amplitude value setting module, a driving signal generating module, a signal supplying module.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: November 4, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Akira Mizuyoshi, Maki Saito, Takayuki Iida
  • Publication number: 20140316195
    Abstract: Broadband light BB and narrowband light NB are simultaneously irradiated to a subject. A blue signal B, a green signal G, and a red signal R are obtained by imaging the subject using a color CCD 33. A base image is generated from the signals B, G, and R of three colors. A B/G image having a B/G ratio is generated. A superficial blood vessel extraction image is obtained by extracting a pixel, in which the B/G ratio is equal to or less than a boundary value Ls between the mucous membrane and the superficial blood vessel, from the B/G image. A medium-deep blood vessel extraction image is obtained by extracting a pixel, in which the B/G ratio is equal to or greater than a boundary value Ld between the mucous membrane and the medium-deep blood vessel. The boundary values Ls and Ld differ depending on each observation mode.
    Type: Application
    Filed: July 2, 2014
    Publication date: October 23, 2014
    Inventors: Toshihiko KAKU, Takayuki IIDA
  • Publication number: 20140316283
    Abstract: Even if the ratio between blue and green components of illumination light is changed, a plurality of types of blood vessels at different depths are reliably distinguished. A blue signal B, a green signal G, a red signal R is obtained by imaging the subject using a color CCD 44. A B/G image having a B/G ratio is generated. A superficial blood vessel extraction image is obtained by extracting a pixel, in which the B/G ratio is equal to or less than a boundary value Ls between the mucous membrane and the superficial blood vessel, from the B/G image. A medium-deep blood vessel extraction image is obtained by extracting a pixel, in which the B/G ratio is equal to or greater than a boundary value Ld between the mucous membrane and the medium-deep blood vessel. The boundary values Ls and Ld differ depending on the light amount ratio.
    Type: Application
    Filed: July 1, 2014
    Publication date: October 23, 2014
    Inventors: Toshihiko KAKU, Takayuki IIDA