Patents Assigned to Kyushu Institute of Technology
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Patent number: 11256950Abstract: 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: GrantFiled: January 31, 2018Date of Patent: February 22, 2022Assignees: AISIN CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGYInventors: Hideo Yamada, Kazuhiro Kuno, Masatoshi Shibata, Shuichi Enokida, Hakaru Tamukoh
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Publication number: 20220009571Abstract: 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: ApplicationFiled: November 7, 2019Publication date: January 13, 2022Applicant: Kyushu Institute of TechnologyInventors: Hiroyuki Miyamoto, Yoshiki Matsumoto
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Publication number: 20210395607Abstract: 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: ApplicationFiled: October 29, 2019Publication date: December 23, 2021Applicants: DAICEL CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGYInventors: Motoi NAKAO, Shinji NAGAMACHI, Masahiro NISHIKAWA, Ming LIU
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Publication number: 20210360758Abstract: 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: ApplicationFiled: July 28, 2021Publication date: November 18, 2021Applicants: Ricoh Company, Ltd., Kyushu Institute of TechnologyInventors: Tsuyoshi UENO, Yuuki OKA, Tetsuya SATOH, Seiya ABE
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Patent number: 11177050Abstract: 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: GrantFiled: June 28, 2017Date of Patent: November 16, 2021Assignees: NISSAN CHEMICAL CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGYInventors: Naohiko Suemura, Tomohisa Ishida, Masahiro Kozako, Masayuki Hikita, Kyunghoon Jang, Takao Akahoshi
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Patent number: 11155775Abstract: 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: GrantFiled: November 7, 2016Date of Patent: October 26, 2021Assignees: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATION, NATIONAL UNIVERSITY CORPORATION KYUSHU INSTITUTE OF TECHNOLOGYInventors: Masaya Hagiwara, Tomohiro Kawahara
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Patent number: 11157724Abstract: 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: GrantFiled: July 31, 2018Date of Patent: October 26, 2021Assignees: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGYInventors: Hideo Yamada, Ryuya Muramatsu, Masatoshi Shibata, Shuichi Enokida
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Publication number: 20210299787Abstract: 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: ApplicationFiled: August 1, 2018Publication date: September 30, 2021Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY, OSG CORPORATIONInventors: Hiroshi IKENOUE, Tsuyoshi YOSHITAKE, Yuki KATAMUNE, Koki MURASAWA
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Patent number: 11109459Abstract: 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: GrantFiled: May 23, 2018Date of Patent: August 31, 2021Assignees: RICOH COMPANY, LTD., KYUSHU INSTITUTE OF TECHNOLOGYInventors: Tsuyoshi Ueno, Yuuki Oka, Tetsuya Satoh, Seiya Abe
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Patent number: 11017262Abstract: 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: GrantFiled: March 30, 2017Date of Patent: May 25, 2021Assignees: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGYInventors: Hideo Yamada, Kazuhiro Kuno, Hakaru Tamukoh, Shuichi Enokida, Shiryu Ooe
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Patent number: 11009466Abstract: 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: GrantFiled: October 8, 2019Date of Patent: May 18, 2021Assignees: SUBARU CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGYInventors: Takayuki Nishi, Shinya Ohtsuka
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Publication number: 20210101604Abstract: 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: ApplicationFiled: March 8, 2018Publication date: April 8, 2021Applicant: KYUSHU INSTITUTE OF TECHNOLOGYInventor: Yasushi SATO
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Patent number: 10902610Abstract: 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: GrantFiled: December 19, 2018Date of Patent: January 26, 2021Assignees: MEGACHIPS CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGYInventors: Kenta Nagamine, Norikazu Ikoma, Fumiya Shingu, Hiromu Hasegawa
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Patent number: 10902614Abstract: 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: GrantFiled: March 30, 2017Date of Patent: January 26, 2021Assignees: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGYInventors: Hideo Yamada, Kazuhiro Kuno, Shuichi Enokida, Tatsuya Hashimoto
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Patent number: 10856814Abstract: A device and method for detecting biological information without being affected by sudden-onset signal even when sudden-onset large vibration is caused while driving a vehicle or the like. Peak input and output values of a variable delay device are detected, and the difference between the values is determined by a subtractor. The difference is compared to a predetermined threshold to obtain a positive or negative output as an up/down selection output for an up/down counter. The output of the up/down counter is sent to a variable delay device with a clock generated based on an inputted peak signal of biological information to obtain a variable delay amount corresponding to one cycle of the biological information. When the subtractor output exceeds the predetermined threshold, a predetermined output voltage is generated, and an amplifier connected to the variable delay device is controlled so that the gain of the amplifier becomes zero.Type: GrantFiled: March 22, 2016Date of Patent: December 8, 2020Assignees: KYUSHU INSTITUTE OF TECHNOLOGY, AI TECHNOLOGY INC.Inventor: Yasushi Sato
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Patent number: 10840365Abstract: It is a purpose of the present invention to provide an insulated gate bipolar transistor device or the like that exhibits high performance and that is suitable for mass production. The insulated bipolar transistor device includes multiple trench structures including at least a trench gate, a first dummy trench, and a second dummy trench. The first dummy trench and the second dummy trench are configured as adjacent trenches. The trench gate is connected to a gate electrode layer. The first dummy trench and the second dummy trench are connected to an emitter electrode layer, and are not connected to the gate electrode layer. A first conductive source layer is also formed between the first dummy trench and the second dummy trench.Type: GrantFiled: December 9, 2017Date of Patent: November 17, 2020Assignees: Kyushu Institute of Technology, Mitsubishi Electric Corporation, Kabushiki Kaisha ToshibaInventors: Ichiro Omura, Katsumi Satoh, Tomoko Matsudai
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Publication number: 20200330739Abstract: A microneedle array with a performance adequate to be used instead of a syringe has at a tip side of each microneedle 10 two puncture portions 14 and 15 disposed facing each other. The puncture portions 14 and 15 each have a part of a side surface of the microneedle 10 as outer surfaces 12 and 13, respectively, and one of the puncture portions 14 and 15 is shorter than the other. Surrounded by inner surfaces 16 and 17 of the puncture portions 14 and 15 facing each other, a housing section 19 capable of holding a drug is formed. The housing section 19 opens toward the tip side and both lateral directions along an axis core of the microneedle 10, and has a central bottom surface 18 at a bottom end.Type: ApplicationFiled: August 6, 2018Publication date: October 22, 2020Applicants: Mishima Kosan Co., Ltd., Kyushu Institute of TechnologyInventors: Toshiaki Atari, Masaaki Matsuo, Yasunori Tashiro, Masaya Hara, Junji Kuroki, Takahiro Ito, Tomohiro Hikima
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Patent number: 10803335Abstract: Provided is an. emotion. estimating apparatus capable of precisely estimating an emotion and mental state of a measurement subject by using a non-contact pulse detection technology. The emotion estimating apparatus forcibly performs re-sampling processing of digital biometric data generated by converting a heart rate signal to digital data after extracting data for one cycle at an RR interval, and obtains coefficients of harmonic components by a DCT conversion processing unit. From the coefficients of the harmonic components, AC components are removed by LPFs, whereby a coefficient data array is obtained.. The coefficient data array is compared to a dictionary data group, in which dictionary data is a characteristic quantity indicating an emotion or mental state, and a similarity therebetween is calculated, whereby an emotion or mental state of a subject is estimated on the basis of the heart rate signal of the subject.Type: GrantFiled: March 8, 2018Date of Patent: October 13, 2020Assignee: KYUSHU INSTITUTE OF TECHNOLOGYInventor: Yasushi Sato
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Publication number: 20200286254Abstract: An image recognition device includes: an image processing device that acquires a feature amount from an image; and an identification device that determines whether a prescribed identification object is present in the image, and identifies the identification object. The identification device includes a BNN that has learned the identification object in advance, and performs identification processing by performing a binary calculation with the BNN on the feature amount acquired by the image processing device. Then, the identification device selects a portion effective for identification from among high-dimensional feature amounts output by the image processing device to reduce the dimensions used in identification processing, and copies low-dimensional feature amounts output by the image processing device to increase dimensions.Type: ApplicationFiled: September 26, 2018Publication date: September 10, 2020Applicants: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGYInventors: Hideo YAMADA, Ryuya MURAMATSU, Masatoshi SHIBATA, Hakaru TAMUKOH, Shuichi ENOKIDA, Yuta YAMASAKI
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Publication number: 20200279166Abstract: An image recognition device includes: an image processing device that acquires a feature amount from an image; and an identification device that determines whether a prescribed identification object is present in the image, and identifies the identification object. The identification device includes a BNN that has learned the identification object in advance, and performs identification processing by performing a binary calculation with the BNN on the feature amount acquired by the image processing device. Then, the identification device selects a portion effective for identification from among high-dimensional feature amounts output by the image processing device to reduce the dimensions used in identification processing, and copies low-dimensional feature amounts output by the image processing device to increase dimensions.Type: ApplicationFiled: September 26, 2018Publication date: September 3, 2020Applicants: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGYInventors: Hideo YAMADA, Ryuya MURAMATSU, Masatoshi SHIBATA, Hakaru TAMUKOH, Shuichi ENOKIDA, Yuta YAMASAKI