Patents Assigned to Kyushu Institute of Technology
  • Patent number: 11380465
    Abstract: A rare-earth cobalt permanent magnet with good magnetic properties is provided. A rare-earth cobalt permanent magnet contains 23 to 27 mass % R, 3.5 to 5.0 mass % Cu, 18 to 25 mass % Fe, 1.5 to 3.0 mass % Zr in mass and a remainder Co with inevitable impurities, where an element R is a rare earth element at least containing Sm. The rare-earth cobalt permanent magnet has a metal structure including a plurality of crystal grains and a continuously extending grain boundary. A content of Cu in the grain boundary is higher than a content of Cu in the crystal grains, and a content of Zr in the grain boundary is higher than a content of Zr in the crystal grains.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: July 5, 2022
    Assignees: KYUSHU INSTITUTE OF TECHNOLOGY, TOKIN Corporation
    Inventors: Masaaki Takezawa, Teruhiko Fujiwara, Hiroaki Machida, Hideyuki Yoshikawa
  • Publication number: 20220189134
    Abstract: An image recognition device involves successively extracting co-occurrence pairs in synchronization with a clock, setting a weighting for the portion connecting the input layer and the intermediate layer corresponding to the extracted co-occurrence pairs, and successively inputting a first vote to the input layer. Meanwhile, the intermediate layer adds and stores the successively inputted number of votes. By continuing this operation, a value the same as if a histogram were inputted to an input layer is achieved in the intermediate layer, without creating a histogram. In this way, the image recognition device of this embodiment can perform image recognition while avoiding the creation of a histogram, which consumes vast amounts of memory. As a result of this configuration, it is possible to save memory resources, simplify circuits, and improve calculation speed, and achieve an integrated circuit suitable to an image recognition device.
    Type: Application
    Filed: March 30, 2020
    Publication date: June 16, 2022
    Applicants: AISIN CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hideo YAMADA, Ryuya MURAMATSU, Masatoshi SHIBATA, Hakaru TAMUKOH
  • Patent number: 11363694
    Abstract: A drive circuit 3 includes a power source 11; current control units 12-1 to 12-n configured to control the amount of currents supplied to a light emitting element in accordance with a pulse modulation signal; and a calculation unit 13 configured to change a duty ratio of a pulse modulation signal. The current control units 12-1 to 12-n include a first switching element 21 configured to be switched on/off in accordance with a pulse modulation signal; and a second switching element 22 configured to be switched on/off in accordance with an inversion signal of the pulse modulation signal input to the first switching element 21; and an inductor 23. The first switching element 21 and the inductor 23 are serially connected between the power source and the light emitting element. The second switching element 22 is connected between ground 25 and a contact point 24 of the first switching element 21 and the inductor 23. The two or more current control units 12-1 to 12-n are connected in parallel.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: June 14, 2022
    Assignees: RICOH COMPANY, LTD., KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Tsuyoshi Ueno, Yuuki Oka, Tetsuya Satoh, Seiya Abe
  • Publication number: 20220180546
    Abstract: An image processing device can use a calculation formula based on an ellipse to approximate a base function of a reference GMM. The burden rate according to a co-occurrence correspondence point can be approximately determined by a calculation in which the Manhattan distance to the ellipse and the co-occurrence correspondence point and the width of the ellipse are input to a calculation formula for the burden rate based on the base function. The width of the ellipse is quantized by the nth power of 2 (where n is an integer of 0 or greater), and the calculation can be carried out by means of a bit shift.
    Type: Application
    Filed: March 30, 2020
    Publication date: June 9, 2022
    Applicants: AISIN CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hideo YAMADA, Masatoshi SHIBATA, Hakaru TAMUKOH, Shuichi ENOKIDA, Kazuki YOSHIHIRO
  • Publication number: 20220174961
    Abstract: Antimicrobial activity exhibited against a wide variety of plant pathogens. A functional peptide consisting of the amino acid sequence: MKVMIVVKTKVKNKKVAKMMVK (SEQ ID NO: 1) or an amino acid sequence having an identity of 85% or more with respect to the amino acid sequence, or consisting of a partial peptide thereof.
    Type: Application
    Filed: March 6, 2020
    Publication date: June 9, 2022
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KYUSHU INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM, CHUBU UNIVERSITY EDUCATIONAL FOUNDATION
    Inventors: Madoka ABE, Satoshi KONDO, Takehiko SHIMADA, Kosuke HANADA, Keiko MOCHIDA, Takashi TSUGE
  • Publication number: 20220177906
    Abstract: Antimicrobial activity exhibited against a wide variety of plant pathogens. A functional peptide consisting of the amino acid sequence: YYGFPAFSERTRKFWRIWKGKTS (SEQ ID NO: 1) or an amino acid sequence having an identity of 85% or more with respect to the amino acid sequence, or consisting of a partial peptide thereof.
    Type: Application
    Filed: March 6, 2020
    Publication date: June 9, 2022
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KYUSHU INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM, CHUBU UNIVERSITY EDUCATIONAL FOUNDATION
    Inventors: Madoka ABE, Satoshi KONDO, Takehiko SHIMADA, Kosuke HANADA, Keiko MOCHIDA, Takashi TSUGE
  • Patent number: 11256950
    Abstract: An image processing device converts an image that is a recognition object image to high-resolution, medium-resolution, and low-resolution images. The device sets the pixel of interest of the high-resolution image, and votes the co-occurrence in a gradient direction with offset pixels, the co-occurrence in the gradient direction pixels in the medium-resolution image, and the co-occurrence in the gradient direction pixels in the low-resolution image, to a co-occurrence matrix. The device creates such a co-occurrence matrix for each pixel combination and for each resolution. The device executes the process on each of the pixels of the high-resolution image, and creates a co-occurrence histogram wherein the elements of a plurality of co-occurrence matrices are arranged in a line. The device normalizes the co-occurrence histogram and extracts, as a feature quantity of the image, a vector quantity having as a component a frequency resulting from the normalization.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: February 22, 2022
    Assignees: AISIN CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hideo Yamada, Kazuhiro Kuno, Masatoshi Shibata, Shuichi Enokida, Hakaru Tamukoh
  • Publication number: 20220009571
    Abstract: A spherical body drive type movement device 10 includes rotary bodies 14, 15, and 16 rotating n number of driving spherical bodies 11, 12, and 13 by being rotationally driven in a state of being in contact from two different directions with each of the driving spherical bodies 11, 12, and 13, and moves on a traveling surface G. The rotary bodies 14, 15, and 16 come into contact with the driving spherical bodies 11, 12, and 13 at positions higher than centers P1, P2, and P3 of the driving spherical bodies 11, 12, and 13 in contact and inside a virtual inverted n-gonal pyramid H or, at positions higher than the centers P1, P2, and P3 of the driving spherical bodies 11, 12, and 13 in contact and on lateral faces ?, ?, and ? of the virtual inverted n-gonal pyramid H.
    Type: Application
    Filed: November 7, 2019
    Publication date: January 13, 2022
    Applicant: Kyushu Institute of Technology
    Inventors: Hiroyuki Miyamoto, Yoshiki Matsumoto
  • Publication number: 20210395607
    Abstract: The present invention provides a fluorescent diamond containing an MV center emitting fluorescence at a concentration of 1×1014/cm3 or higher, where M represents a metal or metalloid, and V represents a vacancy.
    Type: Application
    Filed: October 29, 2019
    Publication date: December 23, 2021
    Applicants: DAICEL CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Motoi NAKAO, Shinji NAGAMACHI, Masahiro NISHIKAWA, Ming LIU
  • Publication number: 20210360758
    Abstract: A drive circuit 3 includes a power source 11; current control units 12-1 to 12-n configured to control the amount of currents supplied to a light emitting element in accordance with a pulse modulation signal; and a calculation unit 13 configured to change a duty ratio of a pulse modulation signal. The current control units 12-1 to 12-n include a first switching element 21 configured to be switched on/off in accordance with a pulse modulation signal; and a second switching element 22 configured to be switched on/off in accordance with an inversion signal of the pulse modulation signal input to the first switching element 21; and an inductor 23. The first switching element 21 and the inductor 23 are serially connected between the power source and the light emitting element. The second switching element 22 is connected between ground 25 and a contact point 24 of the first switching element 21 and the inductor 23. The two or more current control units 12-1 to 12-n are connected in parallel.
    Type: Application
    Filed: July 28, 2021
    Publication date: November 18, 2021
    Applicants: Ricoh Company, Ltd., Kyushu Institute of Technology
    Inventors: Tsuyoshi UENO, Yuuki OKA, Tetsuya SATOH, Seiya ABE
  • Patent number: 11177050
    Abstract: A method for preventing occurrence of creeping electrical discharge at a resin surface, the method being characterized by including dispersing nanosized inorganic fine particles in a resin, thereby preventing occurrence of creeping electrical discharge at the surface of a cured product of the resin.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: November 16, 2021
    Assignees: NISSAN CHEMICAL CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Naohiko Suemura, Tomohisa Ishida, Masahiro Kozako, Masayuki Hikita, Kyunghoon Jang, Takao Akahoshi
  • Patent number: 11155775
    Abstract: The present invention provides a cell culture vessel or a sample cell for observation use that makes it possible to observe three-dimensionally-cultured cells from various angles. The cell culture vessel or the sample cell for observation use according to the present invention is characterized by being equipped with a culture gel in which a cell or cell tissue is embedded and a first vessel which encloses the culture gel, wherein a space in the first vessel is filled with the culture gel; and the first vessel has a light-permeable window made from a hydrogel.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: October 26, 2021
    Assignees: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATION, NATIONAL UNIVERSITY CORPORATION KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Masaya Hagiwara, Tomohiro Kawahara
  • Patent number: 11157724
    Abstract: An image recognition device executes a Hilbert scan of frame image data constituting moving-image data to generate one-dimensional spatial image data, and further arrays the one-dimensional spatial image data in a time direction to generate two-dimensional spatio-temporal image data that holds spatial information and temporal information. The image recognition device converts the moving-image data into the two-dimensional spatio-temporal image data while holding the spatial and temporal information. By means of a CNN unit, the image recognition device executes a convolution process wherein a two-dimensional filter is used on the spatio-temporal image data to image-recognize a behavior of a pedestrian who is a recognition object.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: October 26, 2021
    Assignees: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hideo Yamada, Ryuya Muramatsu, Masatoshi Shibata, Shuichi Enokida
  • Publication number: 20210299787
    Abstract: A diamond smoothing method of irradiating a laser light onto a raised and recessed surface of a diamond, so as to smooth the raised and recessed surface, by ablation that is caused to occur in the diamond by irradiation of the laser light onto the raised and recessed surface. The method includes: a threshold-energy-density detecting step of irradiating the laser light onto the raised and recessed surface, and changing an irradiation energy density of the laser light, so as to detect a threshold energy density as a lower threshold value of the irradiation energy density that causes the ablation to occur; and a smoothing processing step of executing a smoothing processing by irradiating the laser light onto the raised and recessed surface with a smoothing irradiation energy density that is set to be within a range from 1 to 15 times as large as the threshold energy density.
    Type: Application
    Filed: August 1, 2018
    Publication date: September 30, 2021
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY, OSG CORPORATION
    Inventors: Hiroshi IKENOUE, Tsuyoshi YOSHITAKE, Yuki KATAMUNE, Koki MURASAWA
  • Patent number: 11109459
    Abstract: A drive circuit 3 includes a power source 11; current control units 12-1 to 12-n configured to control the amount of currents supplied to a light emitting element in accordance with a pulse modulation signal; and a calculation unit 13 configured to change a duty ratio of a pulse modulation signal. The current control units 12-1 to 12-n include a first switching element 21 configured to be switched on/off in accordance with a pulse modulation signal; and a second switching element 22 configured to be switched on/off in accordance with an inversion signal of the pulse modulation signal input to the first switching element 21; and an inductor 23. The first switching element 21 and the inductor 23 are serially connected between the power source and the light emitting element. The second switching element 22 is connected between ground 25 and a contact point 24 of the first switching element 21 and the inductor 23. The two or more current control units 12-1 to 12-n are connected in parallel.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: August 31, 2021
    Assignees: RICOH COMPANY, LTD., KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Tsuyoshi Ueno, Yuuki Oka, Tetsuya Satoh, Seiya Abe
  • Patent number: 11017262
    Abstract: A hardware configuration is constructed for calculating at high speed the co-occurrence of luminance gradient directions between differing resolutions for a subject image. In an image processing device, a processing line for high-resolution images, a processing line for medium-resolution images, and a processing line for low-resolution images are arranged in parallel, and the luminance gradient directions are extracted for each pixel simultaneously in parallel from images having the three resolutions. Co-occurrence matrix preparation units prepare co-occurrence matrices by using the luminance gradient directions extracted from these images having the three resolutions, and a histogram preparation unit outputs a histogram as an MRCoHOG feature amount by using these matrices. To concurrently processing the images having the three resolutions, high-speed processing can be performed, and moving pictures output from a camera can be processed in real time.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: May 25, 2021
    Assignees: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hideo Yamada, Kazuhiro Kuno, Hakaru Tamukoh, Shuichi Enokida, Shiryu Ooe
  • Patent number: 11009466
    Abstract: A discharge detection system includes a plurality of optical fibers having different optical distances from each other and provided to allow discharge light generated from a test object to enter at least one of the optical fibers, an optical sensor configured to detect the discharge light having entered the at least one of the optical fibers and to output a detection signal having a temporal change in an amplitude of the detection signal, the temporal change in the amplitude corresponding to a temporal change in intensity of the discharge light, and a signal processing system configured to identify an area where the discharge light is generated based a point of time of at least one peak in the detection signal.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: May 18, 2021
    Assignees: SUBARU CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Takayuki Nishi, Shinya Ohtsuka
  • Publication number: 20210101604
    Abstract: A driver state detection device that accurately detects a state of a driver, such as fatigue and nodding off. A driver state detection device includes an acceleration sensor installed in a vehicle, a center-of-gravity movement amount detection unit that is attached to a component constituting the vehicle and detects a center-of-gravity movement amount of a body of a driver on the vehicle, and a driver state determination unit that determines a state of the driver based on magnitude of an amount of deviation between an acceleration of the vehicle obtained by the acceleration sensor and the center-of-gravity movement amount of the body of the driver detected by the center-of-gravity movement amount detection unit.
    Type: Application
    Filed: March 8, 2018
    Publication date: April 8, 2021
    Applicant: KYUSHU INSTITUTE OF TECHNOLOGY
    Inventor: Yasushi SATO
  • Patent number: 10902610
    Abstract: The position of a moving object is estimated with high accuracy using landmark information, and highly accurate state estimation is performed appropriately at high speed. A landmark detection unit obtains a distance between the moving object and each of two or more landmarks as landmark distance information based on observation data obtained by an observation obtaining unit. A candidate area obtaining unit determines a candidate area for a position of the moving object based on the landmark distance information obtained by the landmark detection unit, and obtains candidate area information indicating the determined candidate area. A state estimation unit estimates an internal state of the moving object based on the observation data, the landmark distance information, and the candidate area information to obtain moving object internal state estimation data, and estimates the environmental map based on the candidate area information and the landmark distance information to obtain environmental map data.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: January 26, 2021
    Assignees: MEGACHIPS CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Kenta Nagamine, Norikazu Ikoma, Fumiya Shingu, Hiromu Hasegawa
  • Patent number: 10902614
    Abstract: An image recognition device sets an overall observation region which surrounds a whole body of an object and partial observation regions which surround characteristic parts of the object respectively to locations in an image which are estimated to include captured images of the object. The device clips images in the overall observation region and the partial observation regions, and calculates similarity degrees between them and previously learned images on the basis of a combination of two image feature amounts. The device calculates an optimum ratio in combining the HOG feature amount and the color distribution feature amount individually for the regions. This ratio is determined by setting a weight parameter ?i for setting a weight used for combining the HOG feature amount and the color distribution feature amount to be included in a state vector and subjecting the result to complete search by a particle filter.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 26, 2021
    Assignees: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hideo Yamada, Kazuhiro Kuno, Shuichi Enokida, Tatsuya Hashimoto