Patents Assigned to Ritsumeikan Trust
  • Patent number: 10356353
    Abstract: A solid-state imaging device having a pixel portion in which a plurality of pixels each including a photodiode are arranged in rows and columns, a reading part for reading pixel signals from the pixel portion, and a key generation part which generates a unique key by using, as the key generation-use data, at least one of fluctuation information of pixels and fluctuation information of the reading part, wherein the key generation part includes a tamper resistance enhancement processing part for processing the key generation-use data to enhance the tamper resistance making it difficult to break the unique key as tamper resistance enhancement processing. Due to this, a unique key having a high confidentiality can be generated. Further, reproducibility and uniqueness of the unique ID can be improved to secure a high tamper resistance of the unique key, and tampering and forgery of an image can be reliably prevented.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: July 16, 2019
    Assignees: BRILLNICS JAPAN INC., THE RITSUMEIKAN TRUST
    Inventors: Shunsuke Okura, Masato Yamaguchi, Masayoshi Shirahata, Takeshi Fujino, Mitsuru Shiozaki, Takaya Kubota
  • Patent number: 10355588
    Abstract: A power source device includes a storage capacitor, a voltage detection circuit, input terminals, and output terminals, further includes: a boost circuit which converts a storage power provided to the input terminals to a boosted power under the condition that a stored voltage becomes equal to or greater than the predetermined voltage, and outputs the boosted power from the output terminals; and a MOS transistor which controls a supply of the boosted power to a load. One of the input terminals is connected to a gate terminal of the MOS transistor, and one of the output terminals is connected to a source terminal of the MOS transistor. The MOS transistor turns on to convert the storage power to the boosted power in the boost circuit, while the MOS transistor turns off not to convert the storage power to the boosted power in the boost circuit.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: July 16, 2019
    Assignees: ABLIC INC., THE RITSUMEIKAN TRUST
    Inventors: Fumiyasu Utsunomiya, Takakuni Douseki, Ami Tanaka
  • Publication number: 20190207526
    Abstract: A bidirectional insulated DC/DC converter (1) includes a first single-phase 3-level inverter (INV-A), a second single-phase 3-level inverter (INV-B), and an insulated transformer (3). The first single-phase 3-level inverter (INV-A) generates a first AC voltage (VA) between output terminals (1a, 1b) based on a first DC voltage received from a first DC circuit (5). The second single-phase 3-level inverter (INV-B) generates a second AC voltage (VB) between output terminals (2a, 2b) based on a second DC voltage received from a second DC circuit (6). The insulated transformer (3) includes a primary winding (3a) that receives the first AC voltage (VA) from the output terminals (1a, 1b) and a secondary winding (3b) that receives the second AC voltage (VB) from the output terminals (2a, 2b).
    Type: Application
    Filed: April 13, 2017
    Publication date: July 4, 2019
    Applicants: Toshiba Mitsubishi-Electric Industrial Systems Corporation, The Ritsumeikan Trust
    Inventors: Kazunori SANADA, Toshihide NAKANO, Kazuki NISHIMURA, Takao KAWABATA, Yoshitaka KAWABATA
  • Publication number: 20190094308
    Abstract: This remaining stored power amount estimation device 3 includes: sensors 5, 6 for observing the state of the storage battery 2; and a remaining amount estimation unit 15 which, on the basis of a state vector xk representing the state of the storage battery 2 by a plurality of elements included in an equivalent circuit model 20 modeling the storage battery 2, and an observation vector yk representing an observed value based on the observation result, updates the state of the storage battery 2, using a Kalman filter, and estimates the SOC of the storage battery 2. The remaining amount estimation unit 15 changes the internal impedance of the storage battery 2 modeled by the equivalent circuit model 20, in accordance with values influencing the internal impedance.
    Type: Application
    Filed: October 14, 2015
    Publication date: March 28, 2019
    Applicant: The Ritsumeikan Trust
    Inventor: Masahiro FUKUI
  • Patent number: 10219932
    Abstract: A supporter according to the present invention includes a first supporting section provided so as to extend along a lateral side of a knee joint, a second supporting section extending diagonally upwardly from a first long side along an upper edge of a kneecap so as to reach a second long side, and a third supporting section extending diagonally downwardly from the first long side along a lower edge of the kneecap so as to reach the second long side.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: March 5, 2019
    Assignees: OKAMOTO CORPORATION, THE RITSUMEIKAN TRUST
    Inventors: Nobuaki Onuma, Chika Sokawa, Masaaki Makikawa
  • Patent number: 10165958
    Abstract: A method for detecting a position of a signal source in a living body includes: arranging three electrodes on a surface of the living body and alternately connecting a first external resistance and a second external resistance in parallel between the electrodes and a ground potential; measuring first voltages Vi (i=1, 2, 3) generated at the respective electrodes when the first external resistance is connected in parallel between the electrodes and the ground potential, and second voltages Vi (i=1, 2, 3) generated at the respective electrodes when the second external resistance is connected in parallel between the electrodes and the ground potential; and calculating three ratios Vi/V?i (i=1, 2, 3) from the first and second voltages Vi and V?i, and detecting the position of the signal source in the living body based on the three ratios Vi/V?i (i=1, 2, 3).
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: January 1, 2019
    Assignees: TORAY ENGINEERING CO., LTD., THE RITSUMEIKAN TRUST
    Inventors: Junichi Matsumura, Chisa Inaka, Masaaki Makikawa, Yusuke Sakaue
  • Publication number: 20180282679
    Abstract: Provided is a cell culture apparatus capable of constructing cultured cells under an environment closer to that in a living body. The cell culture apparatus includes: a culture substrate (11) having a culture surface (11a) on which cells S are cultured; and a drive unit (12) configured to allow opening and closing of the culture substrate (11) between a closed form and an open form. The closed form is a form in which the culture substrate (11) forms a flow path having an internal volume with the culture surface (11) being an internal surface of the flow path. The open form is a form in which the culture surface (11a) of the culture substrate (11) is opened outward more than the culture surface (11a) of the culture substrate (11) in the closed form.
    Type: Application
    Filed: July 26, 2016
    Publication date: October 4, 2018
    Applicant: The Ritsumeikan Trust
    Inventors: Satoshi KONISHI, Takuya FUJITA, Koji HATTORI, Yusuke KONO
  • Patent number: 10075068
    Abstract: A power source device has: a storage unit configured to receive a generated power and store as a storage power; a boost unit configured to generate, from a storage power supplied from the storage unit, a boosted power having a higher voltage than a voltage of the storage power, and supply the boosted power to a load; and a voltage detection unit configured to output a boost operation permission signal permitting a boost operation of the boost unit to the boost unit when the storage voltage of the boost unit increases to become a voltage equal to or higher than a minimum operation voltage of the boost unit. The boost unit is configured to start the boost operation by the storage power supplied from the storage unit and operates on the boosted power generated by the boost operation as an operation power source when the boost operation permission signal is output from the voltage detection unit.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: September 11, 2018
    Assignees: ABLIC INC., THE RITSUMEIKAN TRUST
    Inventors: Fumiyasu Utsunomiya, Takakuni Douseki, Ami Tanaka
  • Patent number: 10044281
    Abstract: A bidirectional insulated DC/DC converter narrows a pulse width of an AC fundamental wave voltage corresponding to a higher DC voltage of two DC voltages, to cause effective values of the AC fundamental wave voltages to coincide with each other, and then, sets a phase difference between the AC fundamental wave voltages in accordance with a value and a direction of a current that is desired to flow. Accordingly, even when the difference between the two DC voltages greatly varies, DC power can be stably transmitted and received.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: August 7, 2018
    Assignees: TOSHIBA MITSUBISHI-ELECTRICAL INDUSTRIAL SYSTEMS CORPORATION, The Ritsumeikan Trust
    Inventors: Kazunori Sanada, Hiroshi Masunaga, Yoshitaka Kawabata, Takao Kawabata
  • Publication number: 20180205901
    Abstract: A solid-state imaging device having a pixel portion in which a plurality of pixels each including a photodiode are arranged in rows and columns, a reading part for reading pixel signals from the pixel portion, and a key generation part which generates a unique key by using, as the key generation-use data, at least one of fluctuation information of pixels and fluctuation information of the reading part, wherein the key generation part includes a tamper resistance enhancement processing part for processing the key generation-use data to enhance the tamper resistance making it difficult to break the unique key as tamper resistance enhancement processing. Due to this, a unique key having a high confidentiality can be generated. Further, reproducibility and uniqueness of the unique ID can be improved to secure a high tamper resistance of the unique key, and tampering and forgery of an image can be reliably prevented.
    Type: Application
    Filed: January 18, 2018
    Publication date: July 19, 2018
    Applicants: Brillnics Japan Inc., The Ritsumeikan Trust
    Inventors: Shunsuke Okura, Masato Yamaguchi, Masayoshi Shirahata, Takeshi Fujino, Mitsuru Shiozaki, Takaya Kubota
  • Publication number: 20180115723
    Abstract: A solid-state imaging device 10 includes a pixel portion 20 in which a plurality of pixels including photodiodes are arranged in rows and columns, a reading part 90 for reading pixel signals from the pixel portion, and a key generation part 82 which generates a unique key by using at least one of pixel fluctuation information or reading part fluctuation information. According to this configuration, the tamper resistance of the unique key can be secured and consequently alteration and falsification of images can be prevented.
    Type: Application
    Filed: March 18, 2016
    Publication date: April 26, 2018
    Applicants: Brillnics Inc., The Ritsumeikan Trust
    Inventors: Isao Takayanagi, Shunsuke Tanaka, Shinichiro Matsuo, Shunsuke Okura, Shusuke Iwata, Takeshi Fujino, Mitsuru Shiozaki, Takeshi Kumaki, Takaya Kubota, Masayoshi Shirahata
  • Patent number: 9923411
    Abstract: An electronic device includes: a light detection circuit having a first light sensor and a second light sensor each generating a photocurrent by photoelectric conversion, a resistive element which allows a difference between the photocurrents generated by the first light sensor and the second light sensor to flow, and a voltage detection circuit which detects a voltage generated by the flow of the differential photocurrent through the resistive element, said electronic device being controlled in operation by an output signal of the light detection circuit; a storing unit charged each time the electronic device is operated; and a rectifying element provided between the storing unit and the resistive element. A current with which the storing unit is charged is made to flow to the resistive element through the rectifying element.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: March 20, 2018
    Assignees: SII SEMICONDUCTOR CORPORATION, THE RITSUMEIKAN TRUST
    Inventors: Fumiyasu Utsunomiya, Takakuni Douseki, Ami Tanaka
  • Publication number: 20170354340
    Abstract: A method for detecting a position of a signal source in a living body includes: arranging three electrodes on a surface of the living body and alternately connecting a first external resistance and a second external resistance in parallel between the electrodes and a ground potential; measuring first voltages Vi (i=1, 2, 3) generated at the respective electrodes when the first external resistance is connected in parallel between the electrodes and the ground potential, and second voltages Vi (i=1, 2, 3) generated at the respective electrodes when the second external resistance is connected in parallel between the electrodes and the ground potential; and calculating three ratios Vi/V?i (i=1, 2, 3) from the first and second voltages Vi and V?i, and detecting the position of the signal source in the living body based on the three ratios Vi/V?i (i=1, 2, 3).
    Type: Application
    Filed: November 14, 2014
    Publication date: December 14, 2017
    Applicants: TORAY ENGINEERING CO., LTD., THE RITSUMEIKAN TRUST
    Inventors: Junichi MATSUMURA, Chisa INAKA, Masaaki MAKIKAWA, Yusuke SAKAUE
  • Patent number: 9616573
    Abstract: An end effector can be removed to a target position and calibration loads can be reduced, even if there is an error in a kinematic operation in a robot main body and/or cameras. A positional deviation integral torque obtained by integrating a value corresponding to a positional deviation is applied to joints while being superimposed with torques based on angular deviations. If movements of the joints stop or are about to stop before the end effector reaches a target position due to an error in a kinematic operation, the positional deviation integral torque increases with time, to move said joints and move the end effector to the target position. Thus, the end effector can be reliably moved to the target position by the positional deviation integral torque, and calibration loads can be reduced.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: April 11, 2017
    Assignee: THE RITSUMEIKAN TRUST
    Inventors: Sadao Kawamura, Hiroyuki Onishi
  • Patent number: 9573920
    Abstract: A compound is represented by Formula (I) or (II) described below. A medicine includes, as an active ingredient, a compound represented by Formula (I), (II), or (III) described below.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: February 21, 2017
    Assignees: AMINO UP CHEMICAL CO., LTD, THE RITSUMEIKAN TRUST
    Inventors: Yukinobu Ikeya, Mikio Nishizawa, Takehito Miura
  • Patent number: 9566262
    Abstract: The present invention provides a method of suppressing mast cell differentiation and/or itch in the skin of a subject, comprising topically administering to the skin in need thereof an effective amount of fucoxanthin or a derivative thereof.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: February 14, 2017
    Assignees: The Ritsumeikan Trust, Logic Co., Ltd.
    Inventor: Takashi Fujita
  • Patent number: 9527384
    Abstract: In a system, a behavior description generator extracts a feature portion from at least one of segmented behavior-data sequences corresponding to at least one target driving situation included in sequential driving situations, and generates behavior-description information indicative of a description of a driver's behavior associated with the at least one target driving situation. An event description generator sequentially detects traffic events in at least one environmental data sequence indicative of time-series driving environments of a vehicle. The event description generator generates event-description information including a description indicative of each of the detected traffic events. A context description generator extracts, from the sequentially detected traffic events, one target traffic event that is detected immediately adjacent to the feature portion.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: December 27, 2016
    Assignees: DENSO CORPORATION, THE RITSUMEIKAN TRUST
    Inventors: Takashi Bando, Kazuhito Takenaka, Tadahiro Taniguchi
  • Publication number: 20160310460
    Abstract: The present invention provides a method of suppressing mast cell differentiation and/or itch in the skin of a subject, comprising topically administering to the skin in need thereof an effective amount of fucoxanthin or a derivative thereof.
    Type: Application
    Filed: April 20, 2016
    Publication date: October 27, 2016
    Applicants: THE RITSUMEIKAN TRUST, LOGIC CO., LTD.
    Inventor: Takashi FUJITA
  • Patent number: 9458864
    Abstract: A hydraulic drive circuit is provided that can achieve high responsiveness, high precision, and high efficiency at a low cost in a hydraulic drive system popularly used in an industrial machine such as a press machine, a construction machine, and the like.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: October 4, 2016
    Assignees: THE RITSUMEIKAN TRUST, MORI KOGYO CO., LTD.
    Inventors: Sang-Ho Hyon, Harutsugu Mizui, Etsuhiro Mori
  • Publication number: 20160233778
    Abstract: A bidirectional insulated DC/DC converter narrows a pulse width of an AC fundamental wave voltage corresponding to a higher DC voltage of two DC voltages, to cause effective values of the AC fundamental wave voltages to coincide with each other, and then, sets a phase difference between the AC fundamental wave voltages in accordance with a value and a direction of a current that is desired to flow. Accordingly, even when the difference between the two DC voltages greatly varies, DC power can be stably transmitted and received.
    Type: Application
    Filed: September 10, 2014
    Publication date: August 11, 2016
    Applicants: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION, The Ritsumeikan Trust
    Inventors: Kazunori SANADA, Hiroshi MASUNAGA, Yoshitaka KAWABATA, Takao KAWABATA