Patents by Inventor Ken Tanabe

Ken Tanabe 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).

  • Publication number: 20240102627
    Abstract: A road surface rendering device for rendering a road surface by illuminating an illumination region extending along a direction away from the road surface rendering device with light. The illumination region is divided into three regions of a left region, a central region, and a right region in a direction intersecting a longitudinal direction, an illuminance of the central region is largest.
    Type: Application
    Filed: January 12, 2022
    Publication date: March 28, 2024
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Yukiko Kitazawa, Masaru Sasaki, Koichi Tanabe, Ken Watanabe, Masanori Kito
  • Publication number: 20240097590
    Abstract: A motor controller includes a first control circuit, a second control circuit, a determination circuit, and a command circuit. The first control circuit outputs a first control value based on a rule base from a command value of an angular velocity and a measured value of an angular velocity. The second control circuit outputs a second control value based on a learned model from the command value of the angular velocity and the measured value of the angular velocity. The determination circuit determines a state based on at least the second control value. The command circuit acquires and outputs a control command value from the first control value and the second control value based on a result determined by the determination circuit.
    Type: Application
    Filed: February 28, 2023
    Publication date: March 21, 2024
    Inventors: Yutaka YAMADA, Koji SUZUKI, Ken TANABE
  • Publication number: 20240092058
    Abstract: A layered sheet product formed by layering a plurality of cloths comprised of thermoplastic resin strands and formed by layering a coating layer comprised of a thermoplastic resin onto at least one surface of the cloths, in which the thermoplastic resin is comprised of the same component as the strands and has a thickness of 0.02 mm or more and 1.0 mm or less, and a storage modulus of the coating layer at 150° C. is 3.00×106 Pa or higher and 1.00×108 Pa or lower, and a method for press molding the layered sheet and releasing the molded product after cooling to a range of 70° C. or more and 120° C. or less; and subsequently lowering the molded product temperature to 60° C. or lower.
    Type: Application
    Filed: March 4, 2022
    Publication date: March 21, 2024
    Applicant: Diatex Co., Ltd.
    Inventors: Ken ITOH, Yohei TANABE
  • Publication number: 20240068470
    Abstract: An electric compressor includes: a compression part; an electric motor; an inverter; a housing including a plurality of housing forming members made of metal; a seal member that has an insulation property and is provided between the housing forming members adjacent to each other; and a potential equalization member that is made of metal and is in contact with both the adjacent housing forming members to equalize potentials of the adjacent housing forming members. The adjacent housing forming members include mating surfaces, respectively. An insertion hole is formed in one of the mating surfaces of the adjacent housing forming members, at a position in which the seal member is not provided. The potential equalization member includes an insertion portion inserted into the insertion hole, and a contact portion that is a plate portion extending in a gap between the mating surfaces and is in contact with both the mating surfaces.
    Type: Application
    Filed: July 25, 2023
    Publication date: February 29, 2024
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Ken NAMIKI, Takuro Yamashita, Takumi Maeda, Akinori Tanabe, Takafumi Konishi, Takahiro Suzuki, Yoshitaka Saito
  • Publication number: 20220309805
    Abstract: An apparatus for detecting a lane boundary includes one or more processors configured to: input an image representing a region around a vehicle into a classifier to identify the types of objects represented in respective pixels of the image, and detect a boundary of the travel lane by determining, for each of pixel lines in a direction crossing the travel lane in the image, whether the position corresponding to a pixel group including a predetermined number of contiguous pixels is inside the travel lane in order along a scanning direction from one end to the other end of the pixel line, depending on the order of the types of objects represented in the pixel group and the result of determination whether the position corresponding to the immediately preceding pixel group with respect to the scanning direction is inside the travel lane.
    Type: Application
    Filed: March 21, 2022
    Publication date: September 29, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ken TANABE
  • Patent number: 10953885
    Abstract: A road surface detecting apparatus comprises a camera sensor 11 for taking images of a region in front of a vehicle, and an electronic control unit (ECU) configured to: calculate, based on a taken image, parallax information including a parallax of each pixel composing the taken image; extract a pixel corresponding to a road surface from the taken image; acquire, based on information of the extracted pixel, information-indicating-a-road-surface; calculate, based on the information-indicating-a-road-surface, a road surface gradient formula by approximating a gradient of the road surface by a quadratic function; determine whether or not an absolute value of a coefficient of a quadratic term of this formula is greater than a coefficient threshold; and invalidate the information-indicating-a-road-surface when the absolute value is determined to be greater than the threshold.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: March 23, 2021
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Hirotake Ishigami, Naohide Uchida, Ken Tanabe, Masaki Kuwahara
  • Patent number: 10853666
    Abstract: A target object estimating apparatus comprises parallax information calculating means for calculating parallax information including a parallax between corresponding pixels of taken images taken at a same computation timing, road surface region detecting means for detecting a road surface region in the taken image based on the parallax information, road surface region determining means for determining whether or not each pixel in the taken image corresponds to the road surface region, transition information calculating means for calculating transition information including a change amount of a position of each pixel, using temporally sequential taken images, and estimated value calculating means for estimating a position and a speed of a target object by calculating, based on the parallax/transition information, estimated values of the position and the speed of each pixel.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: December 1, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Naohide Uchida, Ken Tanabe, Hirotake Ishigami, Masaki Kuwahara
  • Patent number: 10776649
    Abstract: In a monitoring apparatus, an optical flow calculator calculates an optical flow for each of selected pixel regions included in at least one pixel region group of an image. The optical flow for each of the selected pixel regions includes information about a direction and amount of movement of a corresponding part of the at least one target object. An adjuster calculates the sum of areas of all the pixel regions included in the at least one pixel region group of the image, and adjusts a selected number of the optical flows to be matched with the at least one pixel region group as a function of the calculated sum of the areas of all the pixel regions included in the at least one pixel region group.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: September 15, 2020
    Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ken Tanabe, Hiroaki Ito, Naohide Uchida
  • Patent number: 10740592
    Abstract: An apparatus comprises three-dimensional object detecting means for detecting a three-dimensional object in a taken image, temporarily determining means for calculating, based on parallax information, a lower end height from a road surface to a lower end of the object, for temporarily determining that the object is a ground-contacting object when the lower end height is less than or equal to a threshold, and for temporarily determining that the object is a floating object when the lower end height exceeds the threshold, and finally determining means for finally determining whether the object is a ground-contacting object or a floating object. The finally determining means finally determines that the object is a ground-contacting object at the current computation timing when the object is determined to be a ground-contacting object in at least one of the temporary determination at the current computation timing and the final determination at the previous computation timing.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 11, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Naohide Uchida, Fumio Sugaya, Ken Tanabe, Hirotake Ishigami, Masaki Kuwahara
  • Patent number: 10719949
    Abstract: In a monitoring apparatus, a disparity calculator obtains, for each point of a target object, a pair of matched pixel regions in respective base image and reference image corresponding to the point of the target object. The disparity calculator calculates a disparity of each of the matched pixel regions of the base image relative to the corresponding matched pixel region of the reference image. A distance calculator corrects the calculated disparity of each of the matched pixel regions of the base image in accordance with a tolerable disparity range for the disparity to thereby increase the calculated disparity of the corresponding one of the matched pixel regions of the base image. The distance calculator calculates the depth distance of each point of the target object relative to the vehicle as a function of the corrected disparity of the corresponding one of the matched pixel regions.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: July 21, 2020
    Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ken Tanabe, Hiroaki Ito, Naohide Uchida
  • Patent number: 10438367
    Abstract: A parallax calculating apparatus comprises first parallax calculating means for calculating a first parallax on a basis of a reference image for all pixels in the reference image using SGM method, second parallax calculating means for calculating a second parallax on a basis of the reference image for at least a part of pixels among pixels in the reference image using BM method, and final parallax calculating means for calculating a final parallax of each of pixels in the reference image based on the first and second parallaxes. The final parallax calculating means calculates the first parallax as the final parallax for a pixel for which only the first parallax has been calculated and calculates a parallax where a decimal part of the first parallax is replaced with that of the second parallax as the final parallax for a pixel for which the first and second parallaxes have been calculated.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: October 8, 2019
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Naohide Uchida, Ken Tanabe, Hirotake Ishigami, Masaki Kuwahara, Noriaki Shirai
  • Patent number: 10321066
    Abstract: A light source estimating apparatus of embodiments has a sensitivity ratio spatial distribution calculating unit configured to extract a first color pixel and a second color pixel which have close spectral sensitivity and which have different sensor responses from a first picked up image picked up with an image sensor under an arbitrary light source, and calculate a ratio between a signal value of the first color pixel and a signal value of the second color pixel to acquire a first sensitivity ratio spatial distribution, and a similarity determining unit configured to estimate a type of the arbitrary light source based on similarity between a second sensitivity ratio spatial distribution group calculated using a second picked up image picked up with the image sensor under a known light source and the first sensitivity ratio spatial distribution.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: June 11, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryuji Hada, Ken Tanabe
  • Publication number: 20190102900
    Abstract: A parallax calculating apparatus comprises first parallax calculating means for calculating a first parallax on a basis of a reference image for all pixels in the reference image using SGM method, second parallax calculating means for calculating a second parallax on a basis of the reference image for at least a part of pixels among pixels in the reference image using BM method, and final parallax calculating means for calculating a final parallax of each of pixels in the reference image based on the first and second parallaxes, The final parallax calculating means calculates the first parallax as the final parallax for a pixel for which only the first parallax has been calculated and calculates a parallax where a decimal part of the first parallax is replaced with that of the second parallax as the final parallax for a pixel for which the first and second parallaxes have been calculated,
    Type: Application
    Filed: September 28, 2018
    Publication date: April 4, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Naohide UCHIDA, Ken TANABE, Hirotake ISHIGAMI, Masaki KUWAHARA, Noriaki SHIRAI
  • Publication number: 20190102633
    Abstract: A target object estimating apparatus comprises parallax information calculating means for calculating parallax information including a parallax between corresponding pixels of taken images taken at a same computation timing, road surface region detecting means for detecting a road surface region in the taken image based on the parallax information, road surface region determining means for determining whether or not each pixel in the taken image corresponds to the road surface region, transition information calculating means for calculating transition information including a change amount of a position of each pixel, using temporally sequential taken images, and estimated value calculating means for estimating a position and a speed of a target object by calculating, based on the parallax/transition information, estimated values of the position and the speed of each pixel.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 4, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Naohide UCHIDA, Ken TANABE, Hirotake ISHIGAMI, Masaki KUWAHARA
  • Publication number: 20190102602
    Abstract: An apparatus comprises three-dimensional object detecting means for detecting a three-dimensional object in a taken image, temporarily determining means for calculating, based on parallax information, a lower end height from a road surface to a lower end of the object, for temporarily determining that the object is a ground-contacting object when the lower end height is less than or equal to a threshold, and for temporarily determining that the object is a floating object when the lower end height exceeds the threshold, and finally determining means for finally determining whether the object is a ground-contacting object or a floating object. The finally determining means finally determines that the object is a ground-contacting object at the current computation timing when the object is determined to be a ground-contacting object in at least one of the temporary determination at the current computation timing and the final determination at the previous computation timing.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 4, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Naohide UCHIDA, Fumio SUGAYA, Ken TANABE, Hirotake ISHIGAMI, Masaki KUWAHARA
  • Publication number: 20190102898
    Abstract: In a monitoring apparatus, a disparity calculator obtains, for each point of a target object, a pair of matched pixel regions in respective base image and reference image corresponding to the point of the target object. The disparity calculator calculates a disparity of each of the matched pixel regions of the base image relative to the corresponding matched pixel region of the reference image. A distance calculator corrects the calculated disparity of each of the matched pixel regions of the base image in accordance with a tolerable disparity range for the disparity to thereby increase the calculated disparity of the corresponding one of the matched pixel regions of the base image. The distance calculator calculates the depth distance of each point of the target object relative to the vehicle as a function of the corrected disparity of the corresponding one of the matched pixel regions.
    Type: Application
    Filed: September 26, 2018
    Publication date: April 4, 2019
    Inventors: Ken TANABE, Hiroaki ITO, Naohide UCHIDA
  • Publication number: 20190102642
    Abstract: In a monitoring apparatus, an optical flow calculator calculates an optical flow for each of selected pixel regions included in at least one pixel region group of an image. The optical flow for each of the selected pixel regions includes information about a direction and amount of movement of a corresponding part of the at least one target object. An adjuster calculates the sum of areas of all the pixel regions included in the at least one pixel region group of the image, and adjusts a selected number of the optical flows to be matched with the at least one pixel region group as a function of the calculated sum of the areas of all the pixel regions included in the at least one pixel region group.
    Type: Application
    Filed: September 26, 2018
    Publication date: April 4, 2019
    Inventors: Ken TANABE, Hiroaki ITO, Naohide UCHIDA
  • Publication number: 20190100215
    Abstract: A road surface detecting apparatus comprises imaging means 11 for taking an image of a region in front of a vehicle, parallax information calculating means for calculating, based on a taken image, parallax information including a parallax of each pixel composing the taken image, road surface information acquiring means for extracting a pixel corresponding to a road surface from the taken image, and acquiring, based on information of extracted pixel, information-indicating-a-road-surface, road surface gradient formula calculating means for calculating, based on the information-indicating-a-road-surface, a road surface gradient formula by approximating a gradient of the road surface by a quadratic function, gradient change determining means for determining whether or not an absolute value of a coefficient of a quadratic term of this formula is greater than a coefficient threshold, and invalidating means for invalidating the information-indicating-a-road-surface when the absolute value is determined to be greate
    Type: Application
    Filed: September 27, 2018
    Publication date: April 4, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Hirotake ISHIGAMI, Naohide UCHIDA, Ken TANABE, Masaki KUWAHARA
  • Patent number: 10041791
    Abstract: In an object detection apparatus, a range image generator, based on distance information indicative of distances from a given measurement point to objects in real space, generates a range image indicative of a distribution of distance information of objects located around the measurement point. A subgroup generator horizontally divides the range image into a number of column regions of prescribed width, and for each column region, generates one or more subgroups that extend continuously in a vertical direction of the range image and fall within a given range of distance information. A continuity determiner determines, for each of the subgroups, whether or not there is distance continuity between the subgroup and its horizontally adjacent subgroup in the range image. A merger merges together horizontally continuous-in-distance subgroups. An object detector detects an object in each of regions of the range image corresponding to the respective merged groups.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: August 7, 2018
    Assignee: DENSO CORPORATION
    Inventors: Hirotake Ishigami, Ken Tanabe, Hiroaki Ito, Masakazu Nishijima
  • Publication number: 20170264868
    Abstract: An imaging apparatus of an embodiment includes a plurality of light receiving units arranged in an array to each detect light with a specific color and a specific polarization angle. In the plurality of light receiving units, both the color and polarization angle to be detected differ between the light receiving units adjacent to each other.
    Type: Application
    Filed: May 30, 2017
    Publication date: September 14, 2017
    Inventors: Atsushi Masuda, Nobu Matsumoto, Ken Tanabe, Ryuji Hada