Patents by Inventor Osamu Furukawa

Osamu 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: 20200124497
    Abstract: An optical fiber characteristic measurement device includes: a detector that detects Brillouin scattered light obtained by causing light to be incident on an optical fiber under test; a spectrum analyzer that obtains a Brillouin gain spectrum from the Brillouin scattered light; and a spectrum analyzing controller that: measures a characteristic of the optical fiber under test by analyzing the Brillouin gain spectrum to obtain a peak frequency of the Brillouin gain spectrum, and changes a frequency range used by the spectrum analyzer to obtain the Brillouin gain spectrum according to the peak frequency.
    Type: Application
    Filed: October 16, 2019
    Publication date: April 23, 2020
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventor: Osamu Furukawa
  • Publication number: 20190195731
    Abstract: An optical fiber characteristics measuring apparatus includes: a light source that outputs frequency-modulated continuous wave of light; a first optical branching unit that branches the continuous light into pump light and reference light; a second optical branching unit that outputs backscattered light generated by making the pump light incident from one end of an optical fiber to be measured, wherein the backscatterd light is Brillouin scattering in the optical fiber; a detector that detects interference light of the backscattered light and the reference light; a measuring unit that measures characteristics of the optical fiber by using a detection signal output from the detector; and a controller that controls the light source to change modulation frequency of the continuous light in units of one period or half a period of a modulation period corresponding to the modulation frequency.
    Type: Application
    Filed: December 27, 2018
    Publication date: June 27, 2019
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventor: Osamu Furukawa
  • Patent number: 10018501
    Abstract: A measuring apparatus for contactlessly measuring vibration or displacement of a measurement target includes a light source configured to emit a continuous wave of light frequency-modulated to arrange a measurement site of the measurement target within a correlation peak, a divider configured to divide the continuous wave of light into first and second divided-waves of light, a light receiver configured to receive interfering light of the first divided-wave of light reflected by the measurement target and the second divided-wave of light, and a calculator configured to calculate the vibration or displacement of the measurement target using an electric signal output from the light receiver.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: July 10, 2018
    Assignee: Yokogawa Electric Corporation
    Inventor: Osamu Furukawa
  • Patent number: 9983095
    Abstract: An optical fiber characteristic measuring device of the present invention includes a light source, an optical divider, an optical waveguide, a first separator, a second separator, a first interferer, a second interferer, and a calculator. The light source is configured to generate a frequency modulated continuous wave of light. The optical divider is configured to divide the frequency modulated continuous wave of light into first and second divided-waves of light. The optical waveguide is configured to guide the first divided-wave of light to one end of an optical fiber to be measured. The first separator is configured to separate a backscattered light generated by Brillouin scattering of the first divided-wave of light in the optical fiber to be measured into a first scattered light, which is a linearly polarized light, and a second scattered light, which is a linearly polarized light perpendicular to the first scattered light.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: May 29, 2018
    Assignee: Yokogawa Electric Corporation
    Inventors: Satoshi Matsuura, Osamu Furukawa
  • Patent number: 9819273
    Abstract: An isolated power conversion apparatus has an isolation transformer, a series circuit including a load and an inductor connected in series with each other, the series circuit being disposed on a secondary side of the isolation transformer, and one or a plurality of switching means disposed between the series circuit and the secondary side of the isolation transformer, the switching means being bidirectional. This apparatus sends out power from a DC power supply of a primary side of the isolation transformer toward the load as DC power or AC power of an arbitrary polarity, or regenerates and supplies the DC power or AC power from the load to the DC power supply.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: November 14, 2017
    Assignee: NF CORPORATION
    Inventor: Osamu Furukawa
  • Publication number: 20170254697
    Abstract: A measuring apparatus for contactlessly measuring vibration or displacement of a measurement target includes a light source configured to emit a continuous wave of light frequency-modulated to arrange a measurement site of the measurement target within a correlation peak, a divider configured to divide the continuous wave of light into first and second divided-waves of light, a light receiver configured to receive interfering light of the first divided-wave of light reflected by the measurement target and the second divided-wave of light, and a calculator configured to calculate the vibration or displacement of the measurement target using an electric signal output from the light receiver.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 7, 2017
    Applicant: Yokogawa Electric Corporation
    Inventor: Osamu FURUKAWA
  • Publication number: 20170184463
    Abstract: The present invention relates to a data processor and a data processing method which are capable of acquiring strain distribution data at the same time. The data processor having an acquirer for acquiring strain distribution data in which a distributed optical fiber sensor measures a strain at a set of positions of an optical fiber at different times; and an interpolator for calculating the strains at the set of positions of the optical fiber at the same time by interpolating positions and times of the strain distribution data acquired by the acquirer.
    Type: Application
    Filed: December 27, 2016
    Publication date: June 29, 2017
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Michio IMAI, Satoru MIURA, Arinori NIMURA, Satoshi MATSUURA, Osamu FURUKAWA
  • Publication number: 20170067794
    Abstract: An optical fiber characteristic measuring device of the present invention includes a light source, an optical divider, an optical waveguide, a first separator, a second separator, a first interferer, a second interferer, and a calculator. The light source is configured to generate a frequency modulated continuous wave of light. The optical divider is configured to divide the frequency modulated continuous wave of light into first and second divided-waves of light. The optical waveguide is configured to guide the first divided-wave of light to one end of an optical fiber to be measured. The first separator is configured to separate a backscattered light generated by Brillouin scattering of the first divided-wave of light in the optical fiber to be measured into a first scattered light, which is a linearly polarized light, and a second scattered light, which is a linearly polarized light perpendicular to the first scattered light.
    Type: Application
    Filed: September 2, 2016
    Publication date: March 9, 2017
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Satoshi MATSUURA, Osamu FURUKAWA
  • Publication number: 20150131338
    Abstract: An isolated power conversion apparatus has an isolation transformer, a series circuit including a load and an inductor connected in series with each other, the series circuit being disposed on a secondary side of the isolation transformer, and one or a plurality of switching means disposed between the series circuit and the secondary side of the isolation transformer, the switching means being bidirectional. This apparatus sends out power from a DC power supply of a primary side of the isolation transformer toward the load as DC power or AC power of an arbitrary polarity, or regenerates and supplies the DC power or AC power from the load to the DC power supply.
    Type: Application
    Filed: January 26, 2015
    Publication date: May 14, 2015
    Applicant: NF CORPORATION
    Inventor: Osamu Furukawa
  • Publication number: 20150131339
    Abstract: An isolated power conversion apparatus has an isolation transformer, a series circuit including a load and an inductor connected in series with each other, the series circuit being disposed on a secondary side of the isolation transformer, and one or a plurality of switching means disposed between the series circuit and the secondary side of the isolation transformer, the switching means being bidirectional. This apparatus sends out power from a DC power supply of a primary side of the isolation transformer toward the load as DC power or AC power of an arbitrary polarity, or regenerates and supplies the DC power or AC power from the load to the DC power supply.
    Type: Application
    Filed: January 26, 2015
    Publication date: May 14, 2015
    Applicant: NF CORPORATION
    Inventor: Osamu Furukawa
  • Publication number: 20130056883
    Abstract: According to one embodiment, a semiconductor device includes a base board, a mounting substrate, a semiconductor element, a holder, a holder terminal, a case, a first sealing layer, and a second sealing layer. The mounting substrate is provided on the base board. The semiconductor element is provided on the mounting substrate. The holder is provided above the mounting substrate. The holder terminal is held by the holder and electrically connected to the semiconductor element. The case surrounds the mounting substrate along a side face of the mounting substrate and surrounds the holder along a side face of the holder. The first sealing layer covers the mounting substrate and the semiconductor element inside a space surrounded by the case. The second sealing layer is provided on the first sealing layer inside the space surrounded by the case and has a higher hardness than the first sealing layer.
    Type: Application
    Filed: March 20, 2012
    Publication date: March 7, 2013
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Osamu FURUKAWA
  • Patent number: 8346513
    Abstract: In three-dimensional data generation unit 120, data edition unit 122, generates a spreadsheet data that includes information relating to a plurality of node points on a continuous arrangement route of target components by interactive process with a user, and stores the data in storage unit 130. Three-dimensional data conversion unit 123, on the basis of spreadsheet data, arranges the node points in a three-dimensional space, connects node points having a predetermined relationship using line segments, and imparts cross-sectional shapes to the connected line segments, to carry out thereby conversion into target component arrangement three-dimensional data. Three-dimensional data management unit 124 stores the obtained target component arrangement three-dimensional data in storage unit 130, in a format readable by three-dimensional CAD or three-dimensional review system, and outputs the data in response to an output instruction from interface unit 110.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: January 1, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yuuki Okada, Shingo Fujii, Hiroki Yabu, Osamu Furukawa
  • Publication number: 20120250369
    Abstract: An isolated power conversion apparatus has an isolation transformer, a series circuit including a load and an inductor connected in series with each other, the series circuit being disposed on a secondary side of the isolation transformer, and one or a plurality of switching means disposed between the series circuit and the secondary side of the isolation transformer, the switching means being bidirectional. This apparatus sends out power from a DC power supply of a primary side of the isolation transformer toward the load as DC power or AC power of an arbitrary polarity, or regenerates and supplies the DC power or AC power from the load to the DC power supply.
    Type: Application
    Filed: March 19, 2012
    Publication date: October 4, 2012
    Applicant: NF CORPORATION
    Inventor: Osamu Furukawa
  • Patent number: 8040344
    Abstract: The present invention reduces the number of diagrams and the workload of management and the like, by aggregating spools of a common format, in plant design technology using a three-dimensional CAD system. Format specific data which is stored separately according to spool format is obtained by aggregating the respective spools in the internal data, which is generated by a data acquisition means, into respective common formats by a spool aggregation means.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: October 18, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yuuki Okada, Osamu Furukawa
  • Publication number: 20100094598
    Abstract: Three-dimensional data can be easily and automatically generated using existing non-three-dimensional data in the form of isometric drawings or the like, without resorting to three-dimensional arrangement adjustment CAD. In three-dimensional data generation unit 120, data edition unit 122, generates a spreadsheet data that includes information relating to a plurality of node points on a continuous arrangement route of target components by interactive process with a user, and stores the data in storage unit 130. Three-dimensional data conversion unit 123, on the basis of spreadsheet data, arranges the node points in a three-dimensional space, connects node points having a predetermined relationship using line segments, and imparts cross-sectional shapes to the connected line segments, to carry out thereby conversion into target component arrangement three-dimensional data.
    Type: Application
    Filed: October 7, 2009
    Publication date: April 15, 2010
    Inventors: Yuuki OKADA, Shingo Fujii, Hiroki Yabu, Osamu Furukawa
  • Publication number: 20100052190
    Abstract: A semiconductor device includes: a base plate; a semiconductor element provided on the base plate; a holder provided on an opposite side of the semiconductor element from the base plate and holding terminals electrically connected to the semiconductor element; a casing surrounding the semiconductor element and opposed to a side surface of the holder; and a sealing resin filled among the base plate, the casing, and the holder. The side surface of the holder is provided with a first protrusion protruding toward the casing. The first protrusion is nearer to the base plate than a major surface of the holder on an opposite side from the base plate. A surface of the first protrusion on an opposite side from the base plate is at least partly buried in the sealing resin.
    Type: Application
    Filed: July 10, 2009
    Publication date: March 4, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Osamu FURUKAWA
  • Patent number: 7511542
    Abstract: A frequency dividing circuit includes: a D-type flip flop that outputs frequency-divided signal synchronized with input clock and reverse phase signal corresponding to the frequency-divided signal; a variable delay circuit that generates a delay feedback signal delayed by a specific delay time from the reverse phase signal input from the D-type flip flop and feeds back the delay feedback signal to the D-type flip flop; and a delay adjusting circuit that detects a phase difference between the reverse phase signal input from the D-type flip flop and the delay feedback signal input from the variable delay circuit, obtains detected results, and outputs to the variable delay circuit a control signal to perform control so that the delay time becomes time required to ensure setup/hold time of the D-type flip flop, based on the detected results.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: March 31, 2009
    Assignee: Yokogawa Electric Corporation
    Inventor: Osamu Furukawa
  • Publication number: 20080255810
    Abstract: The present invention reduces the number of diagrams and the workload of management and the like, by aggregating spools of a common format, in plant design technology using a three-dimensional CAD system. Format specific data which is stored separately according to spool format is obtained by aggregating the respective spools in the internal data, which is generated by a data acquisition means, into respective common formats by a spool aggregation means.
    Type: Application
    Filed: April 3, 2008
    Publication date: October 16, 2008
    Inventors: Yuuki OKADA, Osamu Furukawa
  • Publication number: 20080122498
    Abstract: A frequency dividing circuit includes: a D-type flip flop that outputs frequency-divided signal synchronized with input clock and reverse phase signal corresponding to the frequency-divided signal; a variable delay circuit that generates a delay feedback signal delayed by a specific delay time from the reverse phase signal input from the D-type flip flop and feeds back the delay feedback signal to the D-type flip flop; and a delay adjusting circuit that detects a phase difference between the reverse phase signal input from the D-type flip flop and the delay feedback signal input from the variable delay circuit, obtains detected results, and outputs to the variable delay circuit a control signal to perform control so that the delay time becomes time required to ensure setup/hold time of the D-type flip flop, based on the detected results.
    Type: Application
    Filed: November 14, 2007
    Publication date: May 29, 2008
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventor: Osamu FURUKAWA
  • Patent number: 7315455
    Abstract: More compact, thinner, shorter and lighter surface-mounted electronic component modules and their manufacturing methods at low costs, thus making them industrially highly valuable are available. Such the component includes a wiring substrate having wiring patterns formed on one side and external connection terminals formed on the other side, the wiring patterns and the external connection terminals being connected with each other by via holes or through holes; a plurality of electronic component devices mounted on the one side of the wiring substrate; and an exterior resin layer formed on the wiring substrate which covers the plurality of electronic component devices, wherein at least one of the plurality of electronic component devices is fastened face up to the one side of the wiring substrate, the connection terminal of the electronic component device fastened face up and the wiring pattern or the connection terminal of another electronic component device being connected with each other by wire.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: January 1, 2008
    Assignee: Fujitsu Media Devices Ltd.
    Inventors: Osamu Furukawa, Toshihiko Murata, Osamu Ikata