Patents Assigned to Kyushu Institute of Technology
  • Publication number: 20200250446
    Abstract: 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: Application
    Filed: March 8, 2018
    Publication date: August 6, 2020
    Applicant: KYUSHU INSTITUTE OF TECHNOLOGY
    Inventor: Yasushi SATO
  • Publication number: 20200242425
    Abstract: A spatio-temporal image recognition device includes spatio-temporal image data generation units for converting moving-image data which continuously holds spatial information and temporal information to spatio-temporal image data, and they scan the moving-image data on scanning paths different from each other. The spatio-temporal image data generation units generate spatio-temporal image data scanned on the scanning paths different from each other and output them to an image recognition unit. The image recognition unit generates two-dimensional feature maps by individual convolution process of the spatio-temporal image data and then, integrates them, analyzes them by a neural network, and outputs an image recognition result.
    Type: Application
    Filed: July 31, 2018
    Publication date: July 30, 2020
    Applicants: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hideo YAMADA, Ryuya MURAMATSU, Masatoshi SHIBATA, Shuichi ENOKIDA, Yuto KAI
  • Patent number: 10715021
    Abstract: A mobile capsule device 10 comprises a long capsule body 11 having a permanent magnet 13 movable in the lengthwise direction with respect to the long capsule body and a coil for driving the permanent magnet 13, while a propulsion force is generated entirely by applying an alternate current to the coil and performing back and forth movements of the permanent magnet 13. The coil has first and second coil parts 15 and 16 arranged circumferentially in front and back of the permanent magnet 13, and a frequency of an alternate current applied to the first and second coil parts 15 and 16 is made to accord with a resonance frequency of the capsule device 10 generated by a back and forth vibration of the permanent magnet 13. Thereby, a self-propelled, mobile capsule device 10 which is downsized, compact and efficient and a control method thereof can be provided.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: July 14, 2020
    Assignee: KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Takahiro Ito, Sunao Murakami
  • Publication number: 20200160043
    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: Application
    Filed: July 31, 2018
    Publication date: May 21, 2020
    Applicants: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hideo YAMADA, Ryuya MURAMATSU, Masatoshi SHIBATA, Shuichi ENOKIDA
  • Publication number: 20200160777
    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: May 23, 2018
    Publication date: May 21, 2020
    Applicants: Ricoh Company, Ltd., Kyushu Institute of Technology
    Inventors: Tsuyoshi UENO, Yuuki OKA, Tetsuya SATOH, Seiya ABE
  • Publication number: 20200143544
    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: Application
    Filed: March 30, 2017
    Publication date: May 7, 2020
    Applicants: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hideo YAMADA, Kazuhiro KUNO, Shuichi ENOKIDA, Tatsuya HASHIMOTO
  • Patent number: 10561322
    Abstract: An R-wave of a heartbeat signal accompanied by periodic fluctuation is detected to obtain the average value of an RR interval. Further, a waveform of a heart sound signal, which periodically fluctuates in synchronization with the heartbeat signal, is forcibly repositioned at an interval equivalent to the average value of the RR interval. After performing reposition, noise is removed by using orthogonal transformation and orthogonal inverse transformation, so that the position of obtained waveform is restored to its original position.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: February 18, 2020
    Assignees: KYUSHU INSTITUTE OF TECHNOLOGY, AI TECHNOLOGY INC.
    Inventor: Yasushi Sato
  • Patent number: 10545051
    Abstract: According to one implementation, an explosive spark estimation system includes an explosive spark estimation system includes a measuring system and a processing system. The measuring system is adapted to measure intensity of light, included in a spark occurred from an object to be tested. The light is within at least one specific wavelength band. The processing system is adapted to determine whether the spark is explosiveness based on the intensity of the light. Further, according to one implementation, an explosive spark estimation method includes: measuring intensity of light, included in a spark occurred from an object to be tested, within at least one specific wavelength band; and determining whether the spark is explosive, based on the intensity of the light.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: January 28, 2020
    Assignees: SUBARU CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Takayuki Nishi, Shinya Ohtsuka
  • Publication number: 20200005467
    Abstract: An image processing device has a function for plotting a luminance gradient co-occurrence pair of an image on a feature plane and applying an EM algorithm to form a GMM. The device learns a pedestrian image and creates a GMM, subsequently learns a background image and creates a GMM, and calculates a difference between the two and generates a GMM for relearning based on the calculation. The device plots a sample that conforms to the GMM for relearning on the feature plane by applying an inverse function theorem. The device forms a GMM that represents the distribution of samples at a designated mixed number and thereby forms a standard GMM that serves as a standard for image recognition. When this mixed number is set to less than a mixed number designated earlier, the dimensions with which an image is analyzed are reduced, making it possible to reduce calculation costs.
    Type: Application
    Filed: January 31, 2018
    Publication date: January 2, 2020
    Applicants: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hideo YAMADA, Kazuhiro KUNO, Masatoshi SHIBATA, Shuichi ENOKIDA, Hiromichi OHTSUKA
  • Publication number: 20190392249
    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: Application
    Filed: January 31, 2018
    Publication date: December 26, 2019
    Applicants: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hideo YAMADA, Kazuhiro KUNO, Masatoshi SHIBATA, Shuichi ENOKIDA, Hakaru TAMUKOH
  • Patent number: 10478936
    Abstract: A polishing pad surface property measuring method which can measure surface properties of a polishing pad that reflect CMP performance by applying a laser beam to the polishing pad at a plurality of incident angles is disclosed. The method includes applying a laser beam to a surface of the polishing pad, and receiving light reflected by the surface of the polishing pad and performing Fourier transform on the received light to determine surface properties of the polishing pad. The laser beam is applied to the polishing pad at a plurality of incident angles.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: November 19, 2019
    Assignees: EBARA CORPORATION, Kyushu Institute of Technology
    Inventors: Hisanori Matsuo, Yoshihiro Mochizuki, Keisuke Suzuki, Takahiro Tajiri, Panart Khajornrungruang
  • Patent number: 10411111
    Abstract: A method for fabricating a high-voltage insulated gate type bipolar semiconductor device by comparing to a reference structure of the same includes determining a width S of a mesa region in which the gate insulating film and the MOS transistor are formed, and a trench depth DT, based on a scaling ratio K, in comparison with a second width and a second trench depth of the reference structure, and setting a cell width 2W of the high-voltage insulated gate type bipolar semiconductor device to be equal in length to a second length of the reference structure, the scaling ratio K being defined as K=Y/X, where X indicates a size of a target portion to be miniaturized in the high-voltage insulated gate type bipolar semiconductor device, and Y indicates a size of a target portion to be miniaturized in the reference structure.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: September 10, 2019
    Assignee: KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Ichiro Omura, Masahiro Tanaka, Masanori Tsukuda, Yamato Miki
  • Patent number: 10401285
    Abstract: The present invention relates to an apparatus for measuring surface properties of a polishing pad which measures surface properties such as surface topography or surface condition of a polishing pad used for polishing a substrate such as a semiconductor wafer. The apparatus for measuring surface properties of a polishing pad includes a laser beam source configured to emit a laser beam, and a photodetector configured to detect scattered light that is reflected and scattered by the polishing pad, an optical Fourier transform being performed on the detected scattered light to produce an intensity distribution corresponding to a spatial wavelength spectrum based on surface topography of the polishing pad. The laser beam is applied to the polishing pad at such an incident angle that the laser beam does not reach a bottom portion of a pore formed in the surface of the polishing pad.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: September 3, 2019
    Assignees: EBARA CORPORATION, Kyushu Institute of Technology
    Inventors: Hisanori Matsuo, Keiichi Kimura, Keisuke Suzuki, Panart Khajornrungruang, Takashi Kushida
  • Patent number: 10375360
    Abstract: A state estimation apparatus obtains observation data sets for a tracking target object, and estimates an internal state of the object using likelihoods obtained from the observation data sets and the reliability of each observation data set. A first observation obtaining unit obtains first observation data. A second observation obtaining unit obtains second observation data. A first likelihood obtaining unit obtains a first likelihood based on the first observation data. A second likelihood obtaining unit obtains a second likelihood based on the second observation data. A likelihood combining unit obtains a combined likelihood based on the first and second likelihoods, first reliability data indicating the reliability of the first observation data, and second reliability data indicating the reliability of the second observation data.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: August 6, 2019
    Assignees: MEGACHIPS CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hiromu Hasegawa, Norikazu Ikoma
  • Patent number: 10349858
    Abstract: The difference between the current value and the last value of an RR interval is compared with a predetermined reference differential value, and an attenuation time constant of a peak-hold section is controlled according to the comparison result.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: July 16, 2019
    Assignees: KYUSHU INSTITUTE OF TECHNOLOGY, AI TECHNOLOGY INC.
    Inventor: Yasushi Sato
  • Publication number: 20190148031
    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: Application
    Filed: June 28, 2017
    Publication date: May 16, 2019
    Applicants: NISSAN CHEMICAL CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Naohiko SUEMURA, Tomohisa ISHIDA, Masahiro KOZAKO, Masayuki HIKITA, Kyunghoon JANG, Takao AKAHOSHI
  • Patent number: 10290759
    Abstract: A perovskite photoelectric conversion element includes a light transmitting substrate 11, on a front surface of which light is made incident, an oxide porous layer 13, formed on a rear surface of the light transmitting substrate 11 and with metal oxide particles 12 connected in a network, a metal porous layer 15, formed on a rear surface of the oxide porous layer 13 and with metal particles 14 connected in a network, a porous insulating layer 17, formed on a rear surface of the metal porous layer 15, a first electrode layer 18, formed on and across an entirety of a rear surface of the porous insulating layer 17, a second electrode layer 19, connected to the metal porous layer 15 and formed at a portion different from the first electrode layer 18 in a state of being insulated from the first electrode layer 18, and perovskite 20.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: May 14, 2019
    Assignees: FUJICO CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGY, CKD CORPORATION
    Inventors: Shuzi Hayase, Tingli Ma, Hideaki Nagayoshi, Daishiro Nomura, Takatoshi Nomura
  • Publication number: 20190122371
    Abstract: The position of a moving object is estimated with high accuracy based on 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: Application
    Filed: December 19, 2018
    Publication date: April 25, 2019
    Applicants: MegaChips Corporation, Kyushu Institute of Technology
    Inventors: Kenta NAGAMINE, Norikazu IKOMA, Fumiya SHINGU, Hiromu HASEGAWA
  • Patent number: 10248131
    Abstract: The position of a moving object is estimated with high accuracy based on 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: March 22, 2016
    Date of Patent: April 2, 2019
    Assignees: MEGACHIPS CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Kenta Nagamine, Norikazu Ikoma, Fumiya Shingu, Hiromu Hasegawa
  • Publication number: 20180322361
    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: Application
    Filed: March 30, 2017
    Publication date: November 8, 2018
    Applicants: EQUOS RESEARCH CO., LTD., KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Hideo YAMADA, Kazuhiro KUNO, Hakaru TAMUKOH, Shuichi ENOKIDA, Shiryu OOE