Patents Assigned to National University Corporation Toyohashi University of Technology
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Publication number: 20140139231Abstract: Provided are a device for detecting chemical and physical phenomenon suitable for high integration, and a method therefor. Rather than using a TG section signal to select pixels that require charge measurement, the on-off timing (the timing for moving the charge from a sensing section to an FD section) of the TG section is harmonized for all pixels, and the release or injection of the charge to the sensing section is separately controlled, whereby the charge is held only in sensing sections of pixels that require charge measurement, and the charge is emptied in sensing sections of pixels that do not require charge measurement. In this state, the TG section of all pixels can be opened at the same time, whereby the charge is transferred to the FD section from only the sensing sections holding a charge, and the charge level of the pixel is detected.Type: ApplicationFiled: July 13, 2012Publication date: May 22, 2014Applicant: National University Corporation Toyohashi University of TechnologyInventors: Fumihiro Dasai, Kazuaki Sawada
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Patent number: 8626508Abstract: Provided are a speech search device, the search speed of which is very fast, the search performance of which is also excellent, and which performs fuzzy search, and a speech search method. Not only the fuzzy search is performed, but also the distance between phoneme discrimination features included in speech data is calculated to determine the similarity with respect to the speech using both a suffix array and dynamic programming, and an object to be searched for is narrowed by means of search keyword division based on a phoneme and search thresholds relative to a plurality of the divided search keywords, the object to be searched for is repeatedly searched for while increasing the search thresholds in order, and whether or not there is the keyword division is determined according to the length of the search keywords, thereby implementing speech search, the search speed of which is very fast and the search performance of which is also excellent.Type: GrantFiled: February 10, 2010Date of Patent: January 7, 2014Assignee: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGYInventors: Koichi Katsurada, Tsuneo Nitta, Shigeki Teshima
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Patent number: 8590664Abstract: A drive mechanism includes a rotatable steering unit, a wheel supported by the steering unit, a drive member rotating about an axis extending along a center axis of the steering unit, an output shaft located at an offset position from the center axis of the steering unit and transmitting rotational force of the drive member to the wheel. The drive member includes a first drive unit driven in a forward rotation direction and a second drive unit driven in a reverse rotation direction and located coaxially with the first drive unit. The output shaft includes a first output unit to which driving force is transmitted from the first drive unit, and a second output unit to which driving force is transmitted from a conversion unit for converting rotation of the second drive unit, is restricted by both the output units, and transmits rotational force obtained from the output units to the wheel.Type: GrantFiled: June 15, 2010Date of Patent: November 26, 2013Assignee: National University Corporation Toyohashi University of TechnologyInventors: Kazuhiko Terashima, Takashi Ono, Yuuki Ueno
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Publication number: 20130279229Abstract: A power inverter circuit 1 is a bridge power inverter circuit comprising first and second switching elements 11, 12 sequentially connected in series between input terminals on higher and lower voltage sides and third and fourth switching elements 13, 14 sequentially connected in series between the input terminals on the higher and lower voltage sides and alternately turning on a set of the first and fourth switching elements 11, 14 and a set of the second and third switching elements 12, 14 so as to convert a DC power fed between the input terminals on the higher and lower voltage sides into an AC power. One of the sets of the first and third switching elements 11, 13 and the second and fourth switching elements 12, 14 is subjected to switching control at a frequency higher than that of the other.Type: ApplicationFiled: March 28, 2013Publication date: October 24, 2013Applicants: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY, Sumitomo Electric Industries, Ltd.Inventors: Kazuhiro Fujikawa, Satoshi Hatsukawa, Nobuo Shiga, Takashi Ohira
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Patent number: 8548542Abstract: There is provided a directly-coupled high-temperature superconductor SQUID magnetic sensor in a single thin film structure, which suppresses flux trapping or jumping generated in the sensor in a magnetic field, prevents the degradation in performance of the SQUID sensor, and operates stably with high sensitivity even in the magnetic field. The SQUID magnetic sensor including a bi-crystal substrate 1 having a bi-crystal grain boundary, pickup loops 7a-7d formed from a first high-temperature superconducting thin film on the bi-crystal substrate 1, and a SQUID ring 3 formed from the first high-temperature superconducting thin film on the bi-crystal grain boundary, directly connected with the pickup loops 7a-7d, wherein a plurality of pickup loops 7a-7d are disposed equally spaced from a bi-crystal grain boundary line 2 so as not to overlap with the bi-crystal grain boundary.Type: GrantFiled: April 13, 2010Date of Patent: October 1, 2013Assignee: National University Corporation, Toyohashi University of TechnologyInventors: Yoshimi Hatsukade, Saburo Tanaka, Sho Kanai
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Patent number: 8536930Abstract: A switching circuit according to one embodiment includes: a switching element that has a first terminal and a second terminal, and is driven by a pulse signal to switch a conduction state between the first and second terminals; a power source section that supplies a voltage to the first terminal; a load circuit that is connected in parallel with the power source section; a passive circuit section that is connected between a connection point between the power source section and the load circuit, and the first terminal, and suppresses a current flowing from the connection point to the switching element at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse signal; and a resonant circuit section that is connected between the passive circuit section and the connection point, and resonates at the frequency of N times.Type: GrantFiled: June 27, 2012Date of Patent: September 17, 2013Assignees: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi University of TechnologyInventors: Satoshi Hatsukawa, Nobuo Shiga, Kazuhiro Fujikawa, Takashi Ohira, Kazuyuki Wada, Tuya Wuren, Kazushi Sawada, Hiroshi Ishioka
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Patent number: 8494310Abstract: A novel search method having an advantage over the DSR 472 method the search accuracy of which is currently said to be the highest level is proposed. At the feature value computation stage, the two-dimensional image used in computation of the three-dimensional model feature value (excluding a contour feature value) is corrected so that the gray scales of the pixels are emphasized more as the distance from the center of the two-dimensional image increases.Type: GrantFiled: November 9, 2007Date of Patent: July 23, 2013Assignee: National University Corporation Toyohashi University of TechnologyInventors: Masaki Aono, Yohei Seki, Atsushi Tatsuma
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Patent number: 8486722Abstract: A sensing method for biopolymers by detecting the magnetic signal generated from a labeled biopolymer under AC magnetic field with thermo-responsive magnetic nano particles as label having a critical solution temperature across which the particles have the ability to aggregate or disperse with cooling or heating.Type: GrantFiled: December 13, 2012Date of Patent: July 16, 2013Assignees: National University Corporation Toyohashi University of Technology, JNC CorporationInventors: Saburo Tanaka, Shinji Katsura, Noriyuki Ohnishi, Kageaki Matsui
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Publication number: 20130177835Abstract: By using a composite material that is produced from an acid salt of an oxo acid compound and an azole compound, a proton conductor with good proton conductivity properties under medium temperature, non-humidified conditions may be achieved. The composite material may be produced by mechanical milling of the acid salt of the oxo acid compound and the azole compound using a planetary ball mill The structure of the composite material obtained by the mixing processing may be different from that of a mixture of the acid salt of the oxo acid compound and the azole compound. Therefore, it may be possible to produce the proton conductor that has good proton conductivity properties under medium temperature, non-humidified conditions with a simple method of mechanical mixing.Type: ApplicationFiled: July 22, 2011Publication date: July 11, 2013Applicant: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGYInventors: Song-Yul Oh, Toshihiro Yoshida, Go Kawamura, Atsunori Matsuda, Hiroyuki Muto, Daisuke Uchihori
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Publication number: 20130134994Abstract: Contacting a pair of electrodes with soil, applying an alternate current input electric signal to one of the pair of electrodes, comparing a phase of an output electric signal from the other of the pair electrodes with a phase of the input electric signal; and determining the concentration of the ionic solute included in the solvent according to a difference of the phases. The difference of the phases is not dependent on the water content. An electrical conductivity is proportional to a water content and ion concentration, thereby, the water content of soil is available according to the measured electrical conductivity, while determining the ion concentration.Type: ApplicationFiled: June 14, 2011Publication date: May 30, 2013Applicant: NATIONAL UNIVERSITY CORPORATION, TOYOHASHI UNIVERSITY OF TECHNOLOGYInventors: Masato Futagawa, Kazuaki Sawada
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Publication number: 20130135046Abstract: A switching circuit 33 comprises a connection circuit cascade-connecting control terminals for controlling switching of n number of transistors M1-Mn via n?1 number of coils L1 respectively (n is an integer equal to or more than 2; and coils L3 respectively connected between one end of each of the transistors M1-Mn and other end of a coil L2, one end of the coil L2 being electrically connected to a DC power source. The transistors M1-Mn is sequentially switched with PWM signals inputted to an input terminal of the connection circuit. The switching circuit 33 further comprises a transistor M0 inserted at the one end or the other end of the coil L2 in cascade-connection.Type: ApplicationFiled: October 26, 2012Publication date: May 30, 2013Applicants: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY, Sumitomo Electric Industries, Ltd.Inventors: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi Univers
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Publication number: 20130120890Abstract: Provided is a transistor protection circuit capable of appropriately protecting a transistor even when a switching frequency is high. A transistor protection circuit according to an embodiment of the present invention is a transistor protection circuit for protecting a voltage-driven transistor that is switch-controlled by the application of a high-potential-side voltage or low-potential-side voltage of a power supply to a gate terminal of the transistor by a drive circuit. The transistor protection circuit has a power supply controller that gradually lowers the high-potential-side voltage of the power supply upon receiving a protection command for executing protection of the transistor.Type: ApplicationFiled: October 31, 2012Publication date: May 16, 2013Applicants: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY, SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: SUMITOMO ELECTRIC INDUSTRIES, LTD., National University Corporation TOYOHASHI UNIV
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Patent number: 8388893Abstract: A combined detector capable of simultaneously detecting both a value indicating a physical/chemical phenomenon such as a pH value and the intensity of an energy beam such as light. The combined detector comprises a physical/chemical phenomenon detecting system (10) and an energy beam detecting system. The physical/chemical phenomenon detecting system (10) has a sensing section (21) whose potential varies with a physical/chemical phenomenon, a charge supply section (22) for supplying first charge to the sensing section, a charge supply control section (23) provided between the sensing section (21) and the charge supply section (22), a first charge storage section (26) for storing the first charge transferred from the sensing section (21), and a charge transfer control section (27) provided between the sensing section (21) and the first charge storage section (26).Type: GrantFiled: December 19, 2008Date of Patent: March 5, 2013Assignee: National University Corporation Toyohashi University of TechnologyInventors: Kazuaki Sawada, Junichi Matsuo, Hirokazu Nakazawa
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Publication number: 20130049862Abstract: A switching circuit according to one embodiment has: N switching elements; a connection circuit including N?1 first inductance elements that are connected in series; a second inductance element; and N third inductance elements. Control terminals of the N switching elements are connected to ends of the connection circuit and connection contacts, respectively. One end of the second inductance element is connected to a power supply. The N third inductance elements electrically connects one ends of the N switching elements and the other end of the second inductance element with each other, respectively.Type: ApplicationFiled: March 28, 2011Publication date: February 28, 2013Applicants: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY, Sumitomo Electric Industries, Ltd.Inventors: Takashi Ohira, Kazuyuki Wada, Mitsutoshi Nakata, Kazushi Sawada, Satoshi Hatsukawa, Nobuo Shiga, Kazuhiro Fujikawa
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Patent number: 8383295Abstract: A composition for holographic recording medium, which can be coated in a uniform thickness and enables to simply produce a high definition holographic recording medium is provided. And a holographic medium having a low error rate, high storage capacity, high-performance, high-density, which is produced using the composition for the holographic recording medium, is also provided. The composition comprises a (meth)acrylic acid ester group-containing polymerizable substance, an alicyclic epoxy group-containing cationical polymerizable substance of which is ring-opening polymerized by heat, and a hydroxyl group-containing substance which is reactive with the alicyclic epoxy group-containing cationical polymerizable substance. The holographic recording medium is produced by forming a holographic recording layer on a substrate by applying the composition on the base material and polymerizing the alicyclic epoxy group-containing cationical polymerizable substance and the hydroxyl group-containing substance.Type: GrantFiled: July 23, 2008Date of Patent: February 26, 2013Assignees: Kyoeisha Chemical Co., Ltd., National University Corporation Toyohashi University of TechnologyInventors: Junichi Ikeda, Nobuya Morishita, Ryo Arai, Chisato Katahira, Yoshihiro Takatani, Kouzaburo Yokouchi, Mitsuteru Inoue, Pang Boey Lim
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Patent number: 8372659Abstract: The present invention provides a highly sensitive sensing device for biopolymers which detects the magnetic signal generated from a labeled biopolymer under AC magnetic field using thermo-responsive magnetic nano particles as a probe.Type: GrantFiled: March 14, 2007Date of Patent: February 12, 2013Assignees: National University Corporation Toyohashi University of Technology, JNC CorporationInventors: Saburo Tanaka, Shinji Katsura, Noriyuki Ohnishi, Kageaki Matsui
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Publication number: 20120326774Abstract: A switching circuit according to one embodiment includes: a switching element that has a first terminal and a second terminal, and is driven by a pulse signal to switch a conduction state between the first and second terminals; a power source section that supplies a voltage to the first terminal; a load circuit that is connected in parallel with the power source section; a passive circuit section that is connected between a connection point between the power source section and the load circuit, and the first terminal, and suppresses a current flowing from the connection point to the switching element at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse signal; and a resonant circuit section that is connected between the passive circuit section and the connection point, and resonates at the frequency of N times.Type: ApplicationFiled: June 27, 2012Publication date: December 27, 2012Applicants: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY, Sumitomo Electric Industries, Ltd.Inventors: Satoshi HATSUKAWA, Nobuo SHIGA, Kazuhiro FUJIKAWA, Takashi OHIRA, Kazuyuki WADA, Tuya WUREN, Kazuya ISHIOKA, Kazushi SAWADA, Hiroshi Ishioka
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Patent number: 8330458Abstract: There is provided a nondestructive inspection apparatus using a SQUID magnetic sensor which allows nondestructive and accurate detection of magnetic particles in an insulator such as an electronic device or in a magnetizable member. The nondestructive inspection apparatus using the SQUID magnetic sensor comprises: a magnet for horizontal magnetization 4, the magnet applying a magnetic field to a specimen in the longitudinal direction of the specimen 3?; an inspection unit on which a specimen 3 is set, the specimen 3 being horizontally magnetized in the longitudinal direction by the magnet for horizontal magnetization 4; and belt conveyers 2, 5 for conveying the horizontally magnetized specimen 3; and a gradiometer 8 for detecting a particle horizontally magnetized along with a magnetizable member as the horizontally magnetized specimen 3.Type: GrantFiled: March 5, 2009Date of Patent: December 11, 2012Assignee: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGYInventors: Saburo Tanaka, Yoshimi Hatsukade
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Publication number: 20120306288Abstract: A switching circuit according to one embodiment includes first to fourth semiconductor switch elements. A pulse-like signal is applied to each input terminal of the switch elements such that when the first and fourth switch elements are in an ON (OFF) state, the remaining switch elements are in an OFF (ON) state. The switching circuit includes first and second capacitance elements. The first capacitance elements connected between an output terminal of the second semiconductor switch element and the second capacitance elements connected between an input terminal of the second semiconductor switch element and an output terminal of the fourth semiconductor switch element has a capacitance to reduce a parasitic capacitance between the input and output terminals of each of the fourth and second switch elements at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal.Type: ApplicationFiled: June 6, 2012Publication date: December 6, 2012Applicants: National University Corporation Toyohashi University Of Technology, Sumitomo Electric Industries, Ltd.Inventors: Kazuhiro Fujikawa, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Kazuya Ishioka, Hiroshi Ishioka
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Publication number: 20120306563Abstract: A switching circuit according to one embodiment is a switching circuit including at least one semiconductor switch element having an input, output, and a common terminals, a pulse-like signal being applied between the input and common terminals to switch a current between the output and common terminals. The switching circuit further includes a capacitance suppression element section connected at least one of between the input and output terminals, between the input terminal common terminals, and between the output and common terminals. The capacitance suppression element section reduces a parasitic capacitance between the terminals of the semiconductor switch element where the capacitance suppression element section is connected to less than that obtained when the capacitance suppression element section is not connected at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal.Type: ApplicationFiled: June 6, 2012Publication date: December 6, 2012Applicants: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY, Sumitomo Electric Industries, Ltd.Inventors: Kazuhiro FUJIKAWA, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Kazuya Ishioka, Hiroshi Ishioka