Patents by Inventor Osamu Takeuchi

Osamu Takeuchi 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: 20220026462
    Abstract: An optical output system includes: a first laser that outputs first light which is a pulse laser in response to input of a first signal; a second laser that outputs second light which is a pulse laser in response to input of a second signal; and an arithmetic unit that inputs the first signal and the second signal to the first laser and the second laser, wherein the arithmetic unit repeatedly inputs the first signal and the second signal with switching a variable delay value, which is a difference between a timing to input the first signal to the first laser and a timing to input the second signal to the second laser, in a plurality of ways.
    Type: Application
    Filed: November 29, 2019
    Publication date: January 27, 2022
    Inventors: Hidemi SHIGEKAWA, Osamu TAKEUCHI, Zi-han WANG
  • Publication number: 20210032630
    Abstract: The disclosure provides a composition for suppressing inflammation comprising at least one substance that disrupts a stem-loop structure in the 3? untranslated region of a Regnase-1 mRNA, wherein the stem-loop structure is at least one stem-loop structure selected from a first stem-loop structure formed in a region corresponding to positions 231 to 245 of SEQ ID NO: 1 and a second stem-loop structure formed in a region corresponding to positions 424 to 442 of SEQ ID NO: 1.
    Type: Application
    Filed: March 20, 2019
    Publication date: February 4, 2021
    Applicant: Kyoto University
    Inventor: Osamu Takeuchi
  • Publication number: 20200376111
    Abstract: A vaccine composition for administration to the oral cavity of a human or an animal, the vaccine composition containing at least one antigen derived from an infectious disease, and at least one selected from the group consisting of a toll-like receptor 4 (TLR4) agonist, a toll-like receptor 2/6 (TLR2/6) agonist, and cyclic dinucleotide, or a derivative or salt thereof.
    Type: Application
    Filed: August 18, 2020
    Publication date: December 3, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masahiro FUKASAKA, Arimichi OKAZAKI, Daisuke ASARI, Mitsuhiko HORI, Shizuo AKIRA, Osamu TAKEUCHI
  • Patent number: 9871596
    Abstract: An optical receiver including: a digital filter that performs spectral shaping on a signal; an analyzer that analyzes a spectrum waveform of the signal; a determiner that determines, based on an analysis result by the analyzer, whether the spectrum waveform of the signal is a Nyquist waveform on the basis of a Nyquist first reference; and a controller that stops the spectral shaping of the signal to be performed by the digital filter when the spectrum waveform of the signal is not the Nyquist waveform as a result of the determination by the determiner, and controls a filter coefficient of the digital filter based on the spectrum waveform of the signal when the spectrum waveform of the signal is the Nyquist waveform as the result of the determination by the determiner.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: January 16, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Daijiro Tanaka, Hideyuki Matsuura, Osamu Takeuchi, Takeshi Hoshida
  • Patent number: 9686020
    Abstract: A signal processing device that processes a digital signal formed by sampling an electric signal using a clock signal, the electric signal being obtained by converting an optical signal inputted from a transmission line, the signal processing device includes: a first chromatic dispersion compensator that compensates a waveform distortion caused by a chromatic dispersion with respect to the digital signal; a first nonlinear optical effect compensator that compensates a waveform distortion caused by a nonlinear optical effect with respect to one signal outputted from the first chromatic dispersion compensator; and a controller that detects a phase fluctuation of other signal outputted from the first chromatic dispersion compensator, and controls the clock signal based on the detected phase fluctuation.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: June 20, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Hikari Mochizuki, Takeshi Hoshida, Osamu Takeuchi
  • Publication number: 20170041080
    Abstract: An optical receiver including: a digital filter that performs spectral shaping on a signal; an analyzer that analyzes a spectrum waveform of the signal; a determiner that determines, based on an analysis result by the analyzer, whether the spectrum waveform of the signal is a Nyquist waveform on the basis of a Nyquist first reference; and a controller that stops the spectral shaping of the signal to be performed by the digital filter when the spectrum waveform of the signal is not the Nyquist waveform as a result of the determination by the determiner, and controls a filter coefficient of the digital filter based on the spectrum waveform of the signal when the spectrum waveform of the signal is the Nyquist waveform as the result of the determination by the determiner.
    Type: Application
    Filed: July 1, 2016
    Publication date: February 9, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Daijiro Tanaka, Hideyuki MATSUURA, Osamu Takeuchi, Takeshi Hoshida
  • Patent number: 9564964
    Abstract: An optimization unit in an optical receiver divides a symbol region out of a plurality of symbol regions into which signal points that specifies symbol information included in an optical signal are classified, into a plurality of division regions from the symbol center coordinate of the symbol region. Moreover, the optimization unit accumulates the signal points of the symbol information for every division region in the symbol region. Furthermore, based on the accumulated number of signal points for every division region, the optimization unit controls the average length of a phase estimation unit when the phase noise of the optical signal is calculated.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: February 7, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Taku Saito, Katsumi Fukumitsu, Osamu Takeuchi, Hirofumi Araki, Kanji Naito, Shoichi Murakami
  • Publication number: 20170028054
    Abstract: An intraorally administrable vaccine composition useful to be a preventive or therapeutic agent for infectious diseases, and effectively induces a systemic immune response or a mucosal immune response is provided. A vaccine composition for administration to the oral cavity of a human or an animal, the vaccine composition containing at least one antigen derived from an infectious disease, and at least one selected from the group consisting of a toll-like receptor 4 (TLR4) agonist, a toll-like receptor 2/6 (TLR2/6) agonist, and cyclic dinucleotide, or a derivative or salt thereof.
    Type: Application
    Filed: October 11, 2016
    Publication date: February 2, 2017
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masahiro FUKASAKA, Arimichi OKAZAKI, Daisuke ASARI, Mitsuhiko HORI, Shizuo AKIRA, Osamu TAKEUCHI
  • Patent number: 9498527
    Abstract: An intraorally administrable vaccine composition useful to be a preventive or therapeutic agent for infectious diseases, and effectively induces a systemic immune response or a mucosal immune response is provided. A vaccine composition for administration to the oral cavity of a human or an animal, the vaccine composition containing at least one antigen derived from an infectious disease, and at least one selected from the group consisting of a toll-like receptor 4 (TLR4) agonist, a toll-like receptor 2/6 (TLR2/6) agonist, and cyclic dinucleotide, or a derivative or salt thereof.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: November 22, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Masahiro Fukasaka, Arimichi Okazaki, Daisuke Asari, Mitsuhiko Hori, Shizuo Akira, Osamu Takeuchi
  • Patent number: 9413522
    Abstract: An optical transceiver converts a received optical signal to an electric signal and converts the electric signal to a digital signal, and has an adaptive equalizer to adaptively equalize the digital signal, a synchronization part to synchronize a first polarized wave and a second polarized wave contained in the adaptively equalized digital signal and having polarization axes perpendicular to each other, and a symbol offset determination part to determine an amount of symbol offset between the first polarized wave and the second polarized wave based upon symbol synchronization information of the first polarized wave and the second polarized wave supplied from the synchronization part, the symbol offset determination part being configured to repeat determination of the amount of symbol offset and restart the adaptive equalizer until the symbol offset is minimized.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: August 9, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Daijiro Tanaka, Osamu Takeuchi, Taku Saito, Hirofumi Araki, Katsumi Fukumitsu
  • Patent number: 9407471
    Abstract: A method of tap coefficient correction includes: obtaining a synchronization symbol difference between a first polarization and a second polarization orthogonal to the first polarization; obtaining a delay amount of each of the first polarization and the second polarization in an adaptive equalizer; calculating, in a case where a horizontal axis represents a tap number and a vertical axis represents a tap coefficient and a tap number or a nearest tap number with which an area of a drawn figure is halved is set as a gravity center of tap coefficients, a correction reference gravity center of the tap coefficients set in the adaptive equalizer, based on the synchronization symbol difference and the delay amount; and performing a correction of shifting an entire tap coefficients in units of symbol to cause the correction reference gravity center to be closest to a tap center.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: August 2, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Taku Saito, Nobukazu Koizumi, Hisao Nakashima, Osamu Takeuchi, Hirofumi Araki
  • Patent number: 9360173
    Abstract: An illumination tool has an LED light source; and a light reflecting part which is provided at a front of the LED light source. The light reflecting part is given a slant so as to approach the LED light source toward a center.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: June 7, 2016
    Inventor: Osamu Takeuchi
  • Publication number: 20160094292
    Abstract: A signal processing device that processes a digital signal formed by sampling an electric signal using a clock signal, the electric signal being obtained by converting an optical signal inputted from a transmission line, the signal processing device includes: a first chromatic dispersion compensator that compensates a waveform distortion caused by a chromatic dispersion with respect to the digital signal; a first nonlinear optical effect compensator that compensates a waveform distortion caused by a nonlinear optical effect with respect to one signal outputted from the first chromatic dispersion compensator; and a controller that detects a phase fluctuation of other signal outputted from the first chromatic dispersion compensator, and controls the clock signal based on the detected phase fluctuation.
    Type: Application
    Filed: August 4, 2015
    Publication date: March 31, 2016
    Inventors: HIKARI MOCHIZUKI, Takeshi Hoshida, Osamu Takeuchi
  • Publication number: 20150229401
    Abstract: An optical transceiver converts a received optical signal to an electric signal and converts the electric signal to a digital signal, and has an adaptive equalizer to adaptively equalize the digital signal, a synchronization part to synchronize a first polarized wave and a second polarized wave contained in the adaptively equalized digital signal and having polarization axes perpendicular to each other, and a symbol offset determination part to determine an amount of symbol offset between the first polarized wave and the second polarized wave based upon symbol synchronization information of the first polarized wave and the second polarized wave supplied from the synchronization part, the symbol offset determination part being configured to repeat determination of the amount of symbol offset and restart the adaptive equalizer until the symbol offset is minimized.
    Type: Application
    Filed: February 12, 2015
    Publication date: August 13, 2015
    Inventors: Daijiro TANAKA, Osamu TAKEUCHI, Taku SAITO, Hirofumi ARAKI, Katsumi FUKUMITSU
  • Patent number: 8989602
    Abstract: A digital coherent optical receiver includes a processor that is operative to separate electric signals obtained by converting an optical signal into a horizontal signal component and a vertical signal component; to generate a histogram of the horizontal signal component and the vertical signal component as outputs of the equalizing filter; and to determine a presence/absence of local convergence based on distribution of the histogram of the horizontal signal component and the histogram of the vertical signal component.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: March 24, 2015
    Assignee: Fujitsu Limited
    Inventors: Kosuke Komaki, Osamu Takeuchi
  • Patent number: 8982451
    Abstract: A pump probe measuring device (1) comprises: an ultrashort optical pulse laser generator (2) for generating a first ultrashort optical pulse train which is a pump light (3a), second and third ultrashort optical pulse trains (3b), (3c) which are probe lights; an optical shutter unit (6) to which the second and the third ultrashort pulse trains (3b), (3c) are introduced; and a detecting unit (20) including an irradiation optical system (8) for directing the pump light (3a), the first probe light (3b) and the second probe light (3c) to a sample (7), a sensor (11) for detecting a probe signal from the sample (7), and a phase-sensitive detecting means (12) connected to the sensor (11).
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: March 17, 2015
    Assignee: Japan Science and Technology Agency
    Inventors: Hidemi Shigekawa, Osamu Takeuchi
  • Publication number: 20140363154
    Abstract: An optimization unit in an optical receiver divides a symbol region out of a plurality of symbol regions into which signal points that specifies symbol information included in an optical signal are classified, into a plurality of division regions from the symbol center coordinate of the symbol region. Moreover, the optimization unit accumulates the signal points of the symbol information for every division region in the symbol region. Furthermore, based on the accumulated number of signal points for every division region, the optimization unit controls the average length of a phase estimation unit when the phase noise of the optical signal is calculated.
    Type: Application
    Filed: June 3, 2014
    Publication date: December 11, 2014
    Applicants: FUJITSU LIMITED, FUJITSU TELECOM NETWORKS LIMITED
    Inventors: Taku SAITO, Katsumi Fukumitsu, Osamu Takeuchi, Hirofumi Araki, Kanji Naito, Shoichi Murakami
  • Patent number: 8894996
    Abstract: Disclosed is a composition comprising, as an active ingredient, at least one selected from the group consisting of a Zc3h12a gene inhibitor and a Zc3h12a protein inhibitor. This composition can be used as an immunoadjuvant.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: November 25, 2014
    Assignee: Osaka University
    Inventors: Shizuo Akira, Osamu Takeuchi, Kazufumi Matsushita, Ken Ishii
  • Publication number: 20140321125
    Abstract: An illumination tool has an LED light source; and a light reflecting part which is provided at a front of the LED light source. The light reflecting part is given a slant so as to approach the LED light source toward a center.
    Type: Application
    Filed: November 13, 2012
    Publication date: October 30, 2014
    Inventor: Osamu TAKEUCHI
  • Publication number: 20140240710
    Abstract: A pump probe measuring device (1) comprises: an ultrashort optical pulse laser generator (2) for generating a first ultrashort optical pulse train which is a pump light (3a), second and third ultrashort optical pulse trains (3b), (3c) which are probe lights; an optical shutter unit (6) to which the second and the third ultrashort pulse trains (3b), (3c) are introduced; and a detecting unit (20) including an irradiation optical system (8) for directing the pump light (3a), the first probe light (3b) and the second probe light (3c) to a sample (7), a sensor (11) for detecting a probe signal from the sample (7), and a phase-sensitive detecting means (12) connected to the sensor (11).
    Type: Application
    Filed: July 31, 2012
    Publication date: August 28, 2014
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hidemi Shigekawa, Osamu Takeuchi