Patents by Inventor Takashi Ikeda

Takashi Ikeda 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: 10983333
    Abstract: A light source device includes a phosphor wheel, a light source, a color separating-and-mixing element, and a light-guide optics. The phosphor wheel includes a base plate having a first light passage area and a second light passage area as a pair of light passage areas being annularly and point symmetrically arranged with respect to a center of the base plate, a phosphor area annularly formed on the base plate, and a motor that rotates the base plate. The color separating-and-mixing element disposed between the light source and the phosphor wheel changes a direction of traveling of fluorescence created as a result of light having being incident on the phosphor area and been converted in wavelength. The light-guide optics is provided to cause light from the light source to travel through the first light passage area, then through the second light passage area, and finally enter into the color separating-and-mixing element.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: April 20, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Takashi Ikeda
  • Patent number: 10984273
    Abstract: An attachable matter detection apparatus includes a controller configured to function as an extractor and a detector. The extractor extracts edge information of each pixel contained in a photographic image photographed by an imaging device. The detector detects a candidate area estimated to have a water droplet out of the photographic image based on a matching result between (i) each of the pixels converted into a predetermined data format based on the edge information extracted by the extractor and (ii) a template representing a water droplet and having the data format. The detector calculates a matching frequency with the template for a predetermined area along a contour of the candidate area, and excludes the candidate area when the candidate area satisfies a predetermined exclusion condition based on the matching frequency.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: April 20, 2021
    Assignee: DENSO TEN Limited
    Inventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
  • Patent number: 10976208
    Abstract: In a force sensor, a cylindrical movable body can be moved with respect to a cylindrical main body. A strain body is fixed to the main body and the movable body, and can be deformed in accordance with the movement of the movable body. Strain sensors are provided on the strain body. At least three circular openings are provided in the circumferential surface of the movable body at equal intervals. Stoppers are respectively arranged inside the openings, and each of which includes a first side surface having a first outer diameter smaller than an inner diameter of the opening, and a second side surface having a second outer diameter smaller than the first outer diameter. Fixing members fix the stoppers to the main body.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: April 13, 2021
    Assignee: NIDEC COPAL ELECTRONICS CORPORATION
    Inventors: Takashi Suzuki, Takao Ikeda
  • Patent number: 10970585
    Abstract: An adhering substance detection apparatus according to an embodiment includes a calculating unit and a determining unit. The calculating unit calculates, for each cell composed of a predetermined number of pixels in a captured image, an edge feature value that is based on edge vectors in the pixels, and that classifies an edge orientation that is included in the edge feature value, into two types of angle classes. The determining unit determines a condition of adhering substance adhering to an image capturing apparatus that captured the captured image, based on a transition count representing number of transitions the angle class goes through within a unit region that is a predetermined region composed of a predetermined number of the cells.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: April 6, 2021
    Assignee: DENSO TEN Limited
    Inventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
  • Patent number: 10970592
    Abstract: An adhering substance detection apparatus includes calculating, first and second detecting, and generating units. The calculating unit calculates a variation in a feature value related to luminance in past and current captured images captured by an image capturing device, based on the luminance of pixels included in the captured images. The first detecting unit detects a first region in which the variation calculated by the calculating unit falls within a threshold range, and the feature value in the current captured image falls within a threshold range. The second detecting unit detects a second region in which an irregularity in a distribution of the luminance of the pixels included in the captured image satisfies a predetermined irregularity condition. The generating unit generates a sum region being a sum of the first and second regions, as an adhering substance region corresponding to an adhering substance adhering to the image capturing device.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: April 6, 2021
    Assignee: DENSO TEN Limited
    Inventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
  • Publication number: 20210089802
    Abstract: A deposit detection device according to an embodiment includes a detection module and a determination module. The detection module detects a deposit region including a deposit adhering to a lens of an imaging device from a captured image captured by the imaging device. The determination module performs maintenance determination as to whether to maintain a detection history of detection by the detection module, based on brightness information of the captured image.
    Type: Application
    Filed: September 10, 2020
    Publication date: March 25, 2021
    Applicant: DENSO TEN Limited
    Inventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
  • Publication number: 20210088441
    Abstract: A deposit detection device according to an embodiment includes a calculation module, a detection module, an interpolation module, and a state management module. The calculation module calculates a region feature amount based on an edge vector of each pixel, for each unit region composed of a predetermined number of pixels included in a captured image. The detection module detects the unit region corresponding to a partial covering location and the unit region corresponding to a diffuse reflection location based on a detection condition and a second detection condition, respectively, the first detection condition and the second detection condition being based on the region feature amount. The interpolation module interpolates the area ratio of the partial covering location reduced due to the diffuse reflection location. The state management module controls state transitions of states related to interpolation of the area ratio, based on increase and decrease of the diffuse reflection location.
    Type: Application
    Filed: September 10, 2020
    Publication date: March 25, 2021
    Applicant: DENSO TEN Limited
    Inventors: Tomokazu OKI, Nobunori ASAYAMA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Nobuhisa IKEDA, Teruhiko KAMIBAYASHI
  • Publication number: 20210090268
    Abstract: A deposit detection device according to an embodiment includes an adhesion detection module, a moving adhesion detection module, and a determination module. The adhesion detection module detects a deposit region corresponding to a deposit adhering to an imaging device, based on brightness information of an image captured by the imaging device. The moving adhesion detection module detects the deposit region detected during moving of the vehicle as a moving deposit region, from among the deposit regions detected by the adhesion detection module. When the area of the moving deposit region detected by the moving adhesion detection module is equal to or larger than a first threshold value, the determination module determines that there is a deposit.
    Type: Application
    Filed: September 14, 2020
    Publication date: March 25, 2021
    Applicant: DENSO TEN Limited
    Inventors: Nobuhisa IKEDA, Nobunori ASAYAMA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Daisuke SHIOTA, Teruhiko KAMIBAYASHI
  • Publication number: 20210088456
    Abstract: A deposit detection device according to an embodiment includes a detection module and an identification module. The detection module detects a small region as a candidate region for a deposit region corresponding to a deposit adhering to an imaging device, based on brightness information for each of small regions into which a predetermined region in an image captured by the imaging device is divided. The identification module identifies the candidate region as the deposit region when undulation change in brightness distribution of pixels included in the candidate region detected by the detection module is within a predetermined range.
    Type: Application
    Filed: September 14, 2020
    Publication date: March 25, 2021
    Applicant: DENSO TEN Limited
    Inventors: Nobunori ASAYAMA, Nobuhisa IKEDA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Tomokazu OKI, Teruhiko KAMIBAYASHI
  • Publication number: 20210089818
    Abstract: A deposit detection device according to an embodiment includes a detection module, an extraction module, and an identification module. The detection module detects a candidate region for a deposit region corresponding to a deposit adhering to an imaging device, based on brightness information for each of small regions into which a predetermined region in an image captured by the imaging device is divided. The extraction module extracts, as a boundary region, the small region in which a brightness difference value from the small region adjacent to the small region is equal to or larger than a predetermined threshold value, from among the small regions included in the candidate region detected by the detection module. The identification module identifies the candidate region as the deposit region when the number of boundary regions extracted by the extraction module satisfies a predetermined identification condition.
    Type: Application
    Filed: September 11, 2020
    Publication date: March 25, 2021
    Applicant: DENSO TEN Limited
    Inventors: Nobunori ASAYAMA, Nobuhisa IKEDA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Tomokazu OKI, Teruhiko KAMIBAYASHI
  • Publication number: 20210090260
    Abstract: A deposit detection device according to an embodiment includes an extraction module and a detection module. The extraction module extracts a candidate region for a deposit from a captured image captured by an imaging device. The detection module detects, as a deposit region, a region in which the area of the candidate region is equal to or larger than a predetermined area and the amount of brightness change between pixels in the candidate region is equal to or smaller than a predetermined amount of change.
    Type: Application
    Filed: September 10, 2020
    Publication date: March 25, 2021
    Applicant: DENSO TEN Limited
    Inventors: Nobuhisa IKEDA, Nobunori ASAYAMA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Daisuke SHIOTA, Teruhiko KAMIBAYASHI
  • Publication number: 20210090297
    Abstract: An adhered substance detection apparatus of an embodiment includes a calculator and a determiner. The calculator calculates an edge feature for each cell based on edge vectors of pixels within the cell in a captured image, and further calculates a region feature for each unit region based on the calculated edge features of the cells within the unit region. The determiner determines an adherence state of an adhered substance on a lens of a camera based on the region feature. The calculator calculates, as the region feature, number of the cells having an edge strength of zero. When the number of the cells having the zero edge strength is equal to or greater than a predetermined number in a predetermined attention area in the captured image, the determiner determines not to perform a determination for detecting whether the lens of the camera is entirely covered by the adhered substance.
    Type: Application
    Filed: September 11, 2020
    Publication date: March 25, 2021
    Applicant: DENSO TEN Limited
    Inventors: Daisuke YAMAMOTO, Nobunori ASAYAMA, Nobuhisa IKEDA, Yasushi TANI, Takashi KONO, Daisuke SHIOTA, Teruhiko KAMIBAYASHI
  • Publication number: 20210089809
    Abstract: A deposit detection device according to an embodiment includes a detection module, a determination module, and an identification module. The detection module detects a deposit region corresponding to a deposit adhering to an imaging device, based on brightness information of an image captured by the imaging device. The determination module determines whether variation in brightness information in a predetermined region of the image is within a predetermined range, in a period after a vehicle is stopped in a state in which the deposit region is detected by the detection module. The identification module identifies brightness information serving as a determination criterion of the deposit region when the determination module determines that the variation in brightness information is within a predetermined range.
    Type: Application
    Filed: September 11, 2020
    Publication date: March 25, 2021
    Applicant: DENSO TEN Limited
    Inventors: Nobunori ASAYAMA, Nobuhisa IKEDA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Tomokazu OKI, Teruhiko KAMIBAYASHI
  • Publication number: 20210090235
    Abstract: A deposit detection device according to an embodiment includes an extraction module and an exclusion module. The extraction module extracts a candidate region for a deposit from a captured image captured by an imaging device. The exclusion module excludes from the candidate region a region that satisfies a predetermined exception condition. The exclusion module excludes from the candidate region a region that satisfies a first exception region when adhesion of a deposit to the imaging device is not detected, and excludes from the candidate region a region that satisfies a second exception condition different from the first exception condition when adhesion of the deposit to the imaging device is detected.
    Type: Application
    Filed: September 11, 2020
    Publication date: March 25, 2021
    Applicant: DENSO TEN Limited
    Inventors: Nobuhisa IKEDA, Nobunori ASAYAMA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Daisuke SHIOTA, Teruhiko KAMIBAYASHI
  • Publication number: 20210090237
    Abstract: A deposit detection device according to an embodiment includes a calculation module, an extraction module, and a decision module. The calculation module calculates a brightness average for each of small regions into which a predetermined region of an image captured by an imaging device is divided. The extraction module extracts, as a high-brightness region, the small region in which the brightness average calculated by the calculation module is equal to or larger than a predetermined value. The decision module decides on a brightness threshold value for detecting a deposit region corresponding to a deposit adhering to the imaging device, based on the area of the high-brightness region extracted by the extraction module.
    Type: Application
    Filed: September 14, 2020
    Publication date: March 25, 2021
    Applicant: DENSO TEN Limited
    Inventors: Nobunori ASAYAMA, Nobuhisa IKEDA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Tomokazu OKI, Teruhiko KAMIBAYASHI
  • Publication number: 20210090236
    Abstract: A deposit detection device according to an embodiment includes a detection module and a storage processing module. The detection module detects a deposit region corresponding to a deposit adhering to an imaging device, based on brightness information of an image captured by the imaging device. The storage processing module stores deposit information on the deposit region in a storage unit that is nonvolatile, when an ignition power of a vehicle is turned off in a state in which the deposit region is detected. For an initial detection process after the ignition power is turned on, the detection module detects the deposit region based on the deposit information stored in the storage unit.
    Type: Application
    Filed: September 14, 2020
    Publication date: March 25, 2021
    Applicant: DENSO TEN Limited
    Inventors: Nobunori ASAYAMA, Nobuhisa IKEDA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Tomokazu OKI, Teruhiko KAMIBAYASHI
  • Publication number: 20210090262
    Abstract: An adhered substance detection apparatus determines whether a substance is adhered to an image-capturing apparatus. The adhered substance detection apparatus includes a controller configured to function as: an extractor that extracts candidate regions for being an adhered substance region in which the substance is adhered to the image-capturing apparatus, the candidate regions being extracted based on an edge that is detected from pixels in an image captured by the image-capturing apparatus; and a final determiner that finally determines whether the candidate regions are the adhered substance region, based on i) an area of the candidate region located in a first region of the captured image, the first region including a road surface region in the captured image and ii) an area of the candidate region located in a second region of the captured image, the second region including a region other than the road surface region in the captured image.
    Type: Application
    Filed: September 14, 2020
    Publication date: March 25, 2021
    Applicant: DENSO TEN Limited
    Inventors: Takashi KONO, Nobunori ASAYAMA, Nobuhisa IKEDA, Yasushi TANI, Daisuke YAMAMOTO, Daisuke SHIOTA, Teruhiko KAMIBAYASHI
  • Patent number: 10955309
    Abstract: The torque sensor of the present embodiments comprises a first structure to be coupled to an object to be measured, a second structure, a first bridge circuit including a plurality of first strain sensors configured to detect force to be transmitted between the first structure and the second structure, a second bridge circuit including a plurality of second strain sensors configured to detect force to be transmitted between the first structure and the second structure, and a controller configured to output a signal indicating an abnormality when a difference between a first output voltage of the first bridge circuit and a second output voltage of the second bridge circuit is greater than a first threshold voltage.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: March 23, 2021
    Assignee: NIDEC COPAL ELECTRONICS CORPORATION
    Inventors: Takashi Suzuki, Takao Ikeda, Takayuki Endo
  • Publication number: 20210072179
    Abstract: The present disclosure provides, as a film structure useful for a probe of a biosensor, a film structure comprising a detection layer including an analyte-responsive enzyme; and a protection film formed on the detection layer, in which the protection film includes alone poly(styrene-ran-4-vinylpyridine-ran-propyleneglycol methacrylate); or the protection film includes a copolymer mixture including poly(styrene-ran-4-vinylpyridine-ran-propyleneglycol methacrylate); and poly(4-vinylpyridine)-block-poly(C1-15 alkyl methacrylate), or poly(4-vinylpyridine-ran-2-hydroxyethyl methacrylate).
    Type: Application
    Filed: January 28, 2019
    Publication date: March 11, 2021
    Applicant: PHC Holdings Corporation
    Inventors: Takashi ENDOH, Junko IKEDA
  • Publication number: 20210063878
    Abstract: A resist composition including a base component (A) and an acid-generator component (B), the base component (A) including a resin component (A1) including a structural unit (a0) represented by formula (a0-1), the amount of the structural unit (a0) within the resin component (A1), based on the combined total (100 mol %) of all structural units constituting the resin component (A1) being 58 to 80 mol % (in the formula, Ra01 represents an aromatic hydrocarbon group; Ra02 and Ra03 each independently represents a hydrocarbon group, provided that Ra02 and Ra03 may be mutually bonded to form a ring
    Type: Application
    Filed: August 21, 2020
    Publication date: March 4, 2021
    Inventors: Takashi Nagamine, Rin Odashima, Takuya Ikeda