Patents by Inventor Hiroyuki Furukawa

Hiroyuki Furukawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220157240
    Abstract: In a display device that performs external compensation, pixel circuits are classified into specific and general pixel circuits. When display is restarted, a current measurement circuit, along with a drive circuit, measures a current flowing through a drive transistor in the specific pixel circuit as a first current. A correction circuit obtains a recovery ratio for a characteristic of the drive transistor on the basis of an amount of the first current and corrects a video signal for each of the specific and general pixel circuits using the recovery ratio. Thus, when display is restarted, a suitably compensated image is displayed.
    Type: Application
    Filed: March 29, 2019
    Publication date: May 19, 2022
    Inventors: HIROYUKI FURUKAWA, MASAFUMI UENO, Chie TORIDONO
  • Patent number: 11290189
    Abstract: To provide an optical communication system and an optical communication method able to achieve a high reliable access network capable of long haul distance transmission considering the optical energy efficiency even if the user distribution is biased. An uneven branch optical splitter included in an optical communication system according to the present invention can output the optical intensities different for each output port by adjusting the branching configuration and the branching ratio. For example, a reach transmission distance of the farmost user can be extended or the number of connectible users can be increased by adjusting the branching configuration of the uneven branch optical splitter or the branching ratios such that the near minimum reception sensitivity is given for the ONU installed near the telecommunications carrier.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: March 29, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsuko Kawakita, Kazutaka Hara, Hiroyuki Furukawa, Yasutaka Kimura, Kenji Horikawa
  • Publication number: 20220002336
    Abstract: The present invention provides a novel bridged artificial nucleic acid and an oligomer containing the same as a monomer. The present invention provides specifically a compound represented by general formula (I) (wherein each symbol is the same as defined in the specification) or salts thereof; as well as an oligonucleotide compound represented by general formula (I?) (wherein each symbol is the same as defined in the specification) or salts thereof.
    Type: Application
    Filed: November 11, 2019
    Publication date: January 6, 2022
    Applicants: MITSUBISHI TANABE PHARMA CORPORATION, OSAKA UNIVERSITY
    Inventors: Hiroaki SAWAMOTO, Shinji KUMAGAI, Hiroyuki FURUKAWA, Tomo ARAKI, Masayuki UTSUGI, Satoshi OBIKA
  • Publication number: 20210264839
    Abstract: A display device is it that can more efficiently compensate for degradation of drive transistors by promptly determining an average degradation level of the drive transistors on the entire screen. The display device is provided with a total current measuring circuit (50) that measures, as a total current, drive currents flowing through. all of a plurality of pixel circuits or two or more pixel circuits in a state where a specific image is displayed; a determination data storage unit (110) that holds determination data used to determine whether to perform characteristics detection monitoring for detecting characteristics of the drive transistors; and a determining unit (120) that determines whether to perform the characteristics detection monitoring, based on the total current and the determination data.
    Type: Application
    Filed: September 28, 2018
    Publication date: August 26, 2021
    Inventors: HIROYUKI FURUKAWA, MASAFUMI UENO
  • Publication number: 20210194589
    Abstract: To provide an optical communication system and an optical communication method able to achieve a high reliable access network capable of long haul distance transmission considering the optical energy efficiency even if the user distribution is biased. An uneven branch optical splitter included in an optical communication system according to the present invention can output the optical intensities different for each output port by adjusting the branching configuration and the branching ratio. For example, a reach transmission distance of the farmost user can be extended or the number of connectible users can be increased by adjusting the branching configuration of the uneven branch optical splitter or the branching ratios such that the near minimum reception sensitivity is given for the ONU installed near the telecommunications carrier.
    Type: Application
    Filed: August 21, 2019
    Publication date: June 24, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsuko KAWAKITA, Kazutaka HARA, Hiroyuki FURUKAWA, Yasutaka KIMURA, Kenji HORIKAWA
  • Patent number: 11033975
    Abstract: A wire electrical discharge machine for performing electrical discharge machining on a workpiece to be machined by applying voltage to an electrode gap formed between a wire electrode and the workpiece to generate electrical discharge at the electrode gap under predetermined machining conditions while conveying the wire electrode along a transfer path, includes: a wire breakage detector for detecting a breakage of the wire electrode; a position calculator for calculating the breakage position of the wire electrode in the transfer path; and an adjustment unit for adjusting the machining conditions when the breakage position is in a predetermined section of the transfer path.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: June 15, 2021
    Assignee: FANUC CORPORATION
    Inventors: Hiroyuki Abe, Hiroyuki Furukawa
  • Publication number: 20200383319
    Abstract: A connector (1) includes: a tube (10) configured to be arranged in an interior of a vascular channel; a tubular body (30) having an inner wall surface configured to, together with an outer wall surface of the tube (10), sandwich the vascular channel when the tube (10) is arranged in the interior of the vascular channel; and a balloon (20), configured to be arranged on the outer wall surface of the tube (10) or the inner wall surface of the tubular body (30), and radially expand for performing sealing (i) between the soft tubular member and the inner wall surface of the tubular body (30) and (ii) between the soft tubular member and the outer wall surface of the tube (10). A fluid supply system (100) may include the connector (1), and a perfusion solution supply device (120) connected to the connector (1) and configured to supply a perfusion solution into the interior of the vascular channel.
    Type: Application
    Filed: March 15, 2018
    Publication date: December 10, 2020
    Applicants: National University Corporation Kitami Institute of Technology, National University Corporation Asahikawa Medical University
    Inventors: Masanori MATSUMURA, Naoto MATSUNO, Jun-ichi SHIBANO, Yutaka YOSHIDA, Michihiro SATO, Hiroyuki FURUKAWA
  • Patent number: 10843811
    Abstract: A case body of a fan case in a jet engine is formed by use of a composite material of carbon fiber reinforced plastic. Metal rings are respectively attached to a leading edge and a trailing edge of the case body. The metal rings are electrically connected together by a conductive cable. Both of the metal rings and the conductive cable constitute a path of a lightning current.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: November 24, 2020
    Assignee: IHI Corporation
    Inventors: Hiroyuki Furukawa, Tetsuya Yoshiara, Agamu Tanaka, Yuuji Mori
  • Patent number: 10634313
    Abstract: Provided is a light-emitting device and the like in which a light source emits light on the basis of information obtained through communications and the light thus emitted is easy for a user to visually recognize. A light-emitting device includes an LED, a light guide plate, a transparent NFC antenna sheet, and an NFC antenna. The transparent NFC antenna sheet and the NFC antenna are disposed on a principal surface or a backside surface of the light guide plate. At least some part of the light guided by the light guide plate exits out through the principal surface. The LED emits light on the basis of identification information obtained through communications via the NFC antenna sheet and the NFC antenna.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: April 28, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masaaki Moriya, Masafumi Ueno, Naoki Shiobara, Mitsuru Hineno, Tomohiro Omatsu, Hiroyuki Furukawa, Yasuhiro Sugita, Shinji Yamagishi, Jean Mugiraneza
  • Patent number: 10621913
    Abstract: An organic EL display device includes: a pixel circuit drive unit configured to drive pixel circuits while performing a property measuring process in which a property of circuit elements is measured; a parameter table configured to store parameter values derived from monitoring data obtained in the property measuring process; a compensation computation unit configured to correct externally provided image data based on the parameter values stored in the parameter table, so as to generate a digital video signal to be fed to the pixel circuits; a temperature sensor configured to sense temperature; and a monitoring control section configured to control an execution frequency of the property measuring process in accordance with the sensed temperature. The monitoring control section increases the execution frequency of the property measuring process with an increase in the sensed temperature.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: April 14, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyuki Furukawa, Noritaka Kishi, Kazuyoshi Yoshiyama, Shigetsugu Yamanaka, Naoko Goto, Tamotsu Sakai, Katsuya Otoi
  • Patent number: 10522080
    Abstract: In a data line drive/current measurement circuit, m measurement units are disposed in a plurality of semiconductor chips such that the m measurement units are distributed among the plurality of semiconductor chips. A display apparatus includes transistors such that one transistor is provided for two adjacent semiconductor chips. Inter-chip correction data indicating a variation among the semiconductor chips in terms of characteristics of elements in the measurement units is determined based on a result of a current measurement performed for the same transistor using measurement units disposed in different semiconductor chips. The inter-chip correction data is stored in a storage unit and is used in correcting an image signal. The inter-chip correction data may be determined based on a result of measuring a current flowing through a common cathode of organic EL elements for each semiconductor chip.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: December 31, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Noritaka Kishi, Hiroyuki Furukawa, Katsuya Otoi, Kazuyoshi Yoshiyama, Tamotsu Sakai, Naoko Goto, Noboru Noguchi
  • Publication number: 20190381589
    Abstract: A wire electrical discharge machine for performing electrical discharge machining on a workpiece to be machined by applying voltage to an electrode gap formed between a wire electrode and the workpiece to generate electrical discharge at the electrode gap under predetermined machining conditions while conveying the wire electrode along a transfer path, includes: a wire breakage detector for detecting a breakage of the wire electrode; a position calculator for calculating the breakage position of the wire electrode in the transfer path; and an adjustment unit for adjusting the machining conditions when the breakage position is in a predetermined section of the transfer path.
    Type: Application
    Filed: June 12, 2019
    Publication date: December 19, 2019
    Applicant: FANUC CORPORATION
    Inventors: Hiroyuki Abe, Hiroyuki Furukawa
  • Patent number: 10510285
    Abstract: A measurement circuit includes a plurality of measurement units, performs, at a same timing, a main measurement for measuring a current or a voltage with respect to a pixel circuit with supplying a measurement voltage to a part of the measurement units and a dummy measurement for measuring a current or a voltage with supplying a dummy signal to remaining measurement units, and performs a calculation on a result of the main measurement and a result of the dummy measurement. As the dummy signal, a signal with which a value to be measured is approximately zero is used. The measurement result of the current or the voltage is used for correcting a video signal. With this, a display device which can remove noise in measurement when measuring the current or the voltage with respect to the pixel circuit is provided.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: December 17, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Noritaka Kishi, Hiroyuki Furukawa, Katsuya Otoi, Kazuyoshi Yoshiyama, Tamotsu Sakai, Naoko Gotoh
  • Publication number: 20190323683
    Abstract: Provided is a light-emitting device and the like in which a light source emits light on the basis of information obtained through communications and the light thus emitted is easy for a user to visually recognize. A light-emitting device includes an LED, a light guide plate, a transparent NFC antenna sheet, and an NFC antenna. The transparent NFC antenna sheet and the NFC antenna are disposed on a principal surface or a backside surface of the light guide plate. At least some part of the light guided by the light guide plate exits out through the principal surface. The LED emits light on the basis of identification information obtained through communications via the NFC antenna sheet and the NFC antenna.
    Type: Application
    Filed: March 27, 2017
    Publication date: October 24, 2019
    Inventors: MASAAKI MORIYA, MASAFUMI UENO, NAOKI SHIOBARA, MITSURU HINENO, TOMOHIRO OMATSU, HIROYUKI FURUKAWA, YASUHIRO SUGITA, SHINJI YAMAGISHI, JEAN MUGIRANEZA
  • Patent number: 10421557
    Abstract: An electric conduction structure for conducting and diverting electric current from a vane main body of an cutlet guide vane into en exterior support structure is comprised of: a sheath of a metal covering a leading edge of the vane main body; and an electrically conductive pad of the metal comprising a contact portion so dimensioned as to have an overlap with an end of the sheath, and a washer portion into which a bolt for being tightened into the support structure is insertable, wherein any joints of a weld, a spot-weld, a solder, a bond by an electrically conductive paste and a crimp establish connection between the end of the sheath and the contact portion.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: September 24, 2019
    Assignee: IHI Corporation
    Inventors: Kenro Obuchi, Hiroyuki Yagi, Hiroyuki Furukawa, Hideo Morita, Takaomi Inada
  • Patent number: 10388217
    Abstract: The organic EL display device includes: a current monitoring section that measures a current flowing in a circuit element and outputs a digital measured value in accordance with the measured current; and an averaging section (36) that calculates an average value of a plurality of input values. The current monitoring section measures the current flowing in a circuit element in each pixel circuit a plurality of times in a fixed amount of time. For each pixel circuit, the averaging section (36) receives a plurality of measured values outputted from the current monitoring section in a fixed amount of time as a plurality of input values and outputs an average value of the plurality of digital measured values as a value for use in compensation computation to compensate for degradation of the circuit element.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: August 20, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyuki Furukawa, Noritaka Kishi, Kazuyoshi Yoshiyama, Tamotsu Sakai, Naoko Goto, Noboru Noguchi
  • Patent number: 10319305
    Abstract: A current measurement circuit measures a current flowing through a drive transistor when a plurality of measurement voltages are written to a pixel circuit in a switching manner, and a current flowing through an organic EL element when another plurality of measurement voltages are written to the pixel circuit in a switching manner. A correction unit obtains a threshold voltage and a gain of the drive transistor and the organic EL element with respect to each pixel circuit based on a measured current, determines in which operation region the drive transistor operates between a saturation region and a triode region with respect to each pixel circuit based on the video signal, and corrects the video signal in accordance with the operation region of the drive transistor. Since the drive transistor operates both in the saturation region and the triode region, it is possible to reduce a power supply voltage and reduce power consumption of a display device.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: June 11, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Noritaka Kishi, Hiroyuki Furukawa, Katsuya Otoi, Kazuyoshi Yoshiyama, Tamotsu Sakai, Naoko Gotoh
  • Patent number: 10269301
    Abstract: In a current measurement period of a pixel circuit (20), a measurement voltage is applied to a non-inverting input terminal of an operational amplifier (31), switches (35, 36) turn on, and a switch (37) turns off. Next, the switch (36) turns off, and a capacitor (32) is charged with charge of a current flowing through the pixel circuit (20). Next, the switch (35) turns off, the switch (37) turns on, a constant current flows through a current source (33), and a voltage of a second terminal (terminal connected to an output terminal of the operational amplifier (31)) of the capacitor (32) decreases. A voltage comparator (42) and a counter (43) measure the current flowing through the pixel circuit (20) by measuring time until a voltage of the second terminal of the capacitor reaches a voltage Vcomp. A video signal VS1 is corrected based on a current measurement result.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: April 23, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Noritaka Kishi, Hiroyuki Furukawa, Katsuya Otoi, Kazuyoshi Yoshiyama, Tamotsu Sakai, Naoko Gotoh
  • Publication number: 20190095660
    Abstract: Near field radio communication with a communication device located at or near a housing is enabled in a simple configuration. A housing defining at least part of a space having a prescribed shape includes an NFC antenna. In addition, the NFC antenna is disposed along a surface of the housing for performing the near field radio communication with an NFC card located inside the space having the prescribed shape.
    Type: Application
    Filed: March 28, 2017
    Publication date: March 28, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: MASAFUMI UENO, MASAAKI MORIYA, NAOKI SHIOBARA, MITSURU HINENO, TOMOHIRO OMATSU, HIROYUKI FURUKAWA, YASUHIRO SUGITA, SHINJI YAMAGISHI, JEAN MUGIRANEZA
  • Patent number: 10222534
    Abstract: A light guide plate (30) is configured to allow light output from a display element (10) to be propagated therein and to allow at least a part of the light propagated therein to be reflected by a plurality of reflective structures (34). The plurality of reflective structures each include a reflective surface (36) inclining with respect to a light output surface (S30). The guide plate includes a first transparent member (30A); a second transparent member (30B); and a third transparent member (38) provided between the first transparent member and the second transparent member. The plurality of reflective structures are provided at positions in contact with the third transparent member.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: March 5, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takeshi Masuda, Hiroyuki Furukawa, Yoji Noguchi