Patents by Inventor Takayuki Miyamoto

Takayuki Miyamoto 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).

  • Patent number: 11552714
    Abstract: A signal receiving apparatus includes at least one signal separating apparatus that separates a specific signal from a plurality of received signals. Each of the at least one signal separating apparatus includes a spatial filtering unit that separates at least one equalized signal and a decision signal outputting unit that generates a first decision signal by deciding the equalized signal and outputs the generated first decision signal. The spatial filtering unit separates the at least one equalized signal by multiplying at least the plurality of received signals among the plurality of received signals and either the first decision signal output from the decision signal outputting unit or a second decision signal output from another signal separating apparatus by predetermined weighting coefficients.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: January 10, 2023
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kohki Shibahara, Takayuki Mizuno, Akira Isoda, Yutaka Miyamoto
  • Publication number: 20220407600
    Abstract: A computation unit uses an assumed chromatic dispersion amount to compensate for dispersion of a coherently received optical signal and performs arithmetic of a signal power of the optical signal that is dispersion compensated. The computation unit performs computation of an evaluation function when a signal power and a delayed signal power obtained by applying a predetermined delay to the signal power satisfy a threshold condition. The evaluation function is a function for evaluating whether the assumed chromatic dispersion amount is a chromatic dispersion amount of the optical signal using the difference between the signal power and the delayed signal power. The chromatic dispersion amount calculation unit calculates a chromatic dispersion amount of the optical signal based on the computation result of the evaluation function by the computation unit when each of a plurality of different assumed chromatic dispersion amounts is used.
    Type: Application
    Filed: November 28, 2019
    Publication date: December 22, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shimpei SHIMIZU, Takayuki KOBAYASHI, Masanori NAKAMURA, Yutaka MIYAMOTO
  • Publication number: 20220399940
    Abstract: An optical transmission system includes: a transmission unit configured to co-propagate a signal light in which data is modulated and an idler light having complex amplitude that is phase conjugate with the signal light via an optical transmission medium; at least one optical amplifier configured to perform a phase sensitive amplification operation through an action among the signal light, the idler light, and an excitation light in a nonlinear medium; and a reception unit configured to receive the signal light that has been amplified by the optical amplifier, coherently detect the signal light and the idler light individually, and conduct a diversity synthesis to demodulate the data.
    Type: Application
    Filed: November 28, 2019
    Publication date: December 15, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shimpei SHIMIZU, Takayuki KOBAYASHI, Yutaka MIYAMOTO
  • Patent number: 11518826
    Abstract: A method for producing a polytetrafluoroethylene powder, which includes applying an ultrasonic wave to a polytetrafluoroethylene aqueous dispersion containing polytetrafluoroethylene particles to coagulate the polytetrafluoroethylene particles.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: December 6, 2022
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuhiro Mishima, Takahiro Taira, Chiaki Okui, Takayuki Tanaka, Masayoshi Miyamoto, Taku Yamanaka
  • Publication number: 20220366307
    Abstract: A first learning unit (101) learns a difference model (111) for predicting a difference between current monitoring data that is monitoring data obtained by monitoring a monitoring target at each time point and at each of a plurality of monitoring points and is monitoring data at a current time point, and past monitoring data that is monitoring data at each of a plurality of past time points; a second learning unit (102) learns a prediction model (past) (112) for predicting variation of the monitoring target using the past monitoring data; a first generation unit (103) generates corrected past data using the difference model (111), by correcting a difference between the past monitoring data and the current monitoring data; and a third learning unit (104) learns a prediction model (current) (113) for predicting variation of the monitoring target using the current monitoring data, the difference model (111), the prediction model (past) (112), and the corrected past data, whereby variation of the monitoring targe
    Type: Application
    Filed: October 2, 2019
    Publication date: November 17, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Koshin TO, Masaru MIYAMOTO, Shinya OI, Akira NAKAYAMA, Yusuke TANAKA, Takayuki ADACHI, Mitsutoshi NAGAHAMA, Maiko NAYA
  • Publication number: 20220351093
    Abstract: It is possible to perform an analysis useful for setting points to be careful in the execution of simulation and understanding movement of people and local situations. A measurement point-to-point information generation unit (130) generates, based on setting data for performing a simulation for a plurality of received measurement points, measurement point-to-point information that is information about between measurement points. A time-series data estimation unit (140) obtains, for each of the plurality of measurement points, based on the measurement point-to-point information and time-series data that is measurement data at the received measurement point in time series, measurement data at the measurement point in time series. A difference analysis unit (150) analyzes information about a difference between the estimated measurement data and the time-series data.
    Type: Application
    Filed: June 12, 2019
    Publication date: November 3, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takayuki ADACHI, Akira NAKAYAMA, Masaru MIYAMOTO
  • Publication number: 20220352767
    Abstract: A stator has a plurality of core pieces being arranged in a ring shape around a rotation axis, and is configured such that a coupling part having a fitting structure is formed between the core pieces adjacent to each other in an arrangement of the ring shape, the coupling part allowing rotation about a pillar portion and restricting displacement in the axis direction by a snap-fit coupling that is formed with the pillar portion being provided on the yoke side of one of the core pieces and extending in a direction parallel to the axis and an open ring portion being provided on the yoke side of the other of the core pieces.
    Type: Application
    Filed: July 28, 2020
    Publication date: November 3, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takayuki TAKESHITA, Takeshi YAGI, Taichi TOKUHISA, Shinri MATSUKAWA, Yutaka HIROTA, Hidenori MIYAMOTO
  • Publication number: 20220333935
    Abstract: An information provision device includes: a simulation execution unit that executes a simulation of a movement of moving bodies on multiple routes from a point of departure to a destination on a basis of setting data that accounts for different means of transportation; a simulation result analysis unit that obtains, as a simulation result, information related to a number and a density of the moving bodies on each of the routes from the point of departure to the destination on a basis of a result of the simulation execution unit executing the simulation; and an information provision unit that provides information based on the simulation result obtained by the simulation result analysis unit.
    Type: Application
    Filed: September 9, 2019
    Publication date: October 20, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takayuki ADACHI, Shinya OI, Akira NAKAYAMA, Masaru MIYAMOTO
  • Publication number: 20220335183
    Abstract: A vector field setting unit (102) sets a vector field for providing virtual force for reproducing, in a region in which a moving body moves, movement of the moving body in a certain direction, and a simulation unit (104) simulates the movement of the moving body in the region, based on a movement model to which a parameter for simulating the movement of the moving body is set and the vector field set by the vector field setting unit, whereby the movement of the moving body is appropriately simulated even when the movement of the moving body is unusual.
    Type: Application
    Filed: October 2, 2019
    Publication date: October 20, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Koshin TO, Akira NAKAYAMA, Masaru MIYAMOTO, Shinya OI, Yusuke TANAKA, Takayuki ADACHI, Mitsutoshi NAGAHAMA, Maiko NAYA
  • Patent number: 11476635
    Abstract: An optically amplified repeater system includes optical transmission paths, a multi-channel optical amplifier, one or more Raman amplification pumping light sources, and a wavelength multiplexer. The multi-channel optical amplifier includes K simultaneous pumping light sources, N optical amplification media, and one or more optical couplers, and simultaneously amplifies, with the K simultaneous pumping light sources, light intensities of optical signals that pass through the N optical amplification media and propagate through the optical transmission paths. Light intensities of the wavelength band of the optical signals is Raman amplified by the Raman amplification pumping light. A light intensity of the Raman amplification pumping light output from the one or more Raman amplification pumping light sources is determined in accordance with characteristic differences between the optical signals passing through the optical transmission paths.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: October 18, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takayuki Mizuno, Akira Isoda, Kohki Shibahara, Mitsunori Fukutoku, Yutaka Miyamoto
  • Publication number: 20220329343
    Abstract: An optical signal processing apparatus of an embodiment is an optical signal processing apparatus for separating and detecting an optical signal transmitted in a mode division multiplexing optical communication method by signal processing based on a multi-input multi-output (MIMO)-type linear filter. The device includes a signal processing unit configured to estimate weighting factors of the MIMO-type linear filter by sequential calculation based on an affine projection method.
    Type: Application
    Filed: September 6, 2019
    Publication date: October 13, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Koki SHIBAHARA, Takayuki MIZUNO, Yutaka MIYAMOTO
  • Publication number: 20220317349
    Abstract: A mode equalization filter for reducing a difference in optical power between modes of signal light propagating inside FMFs of an MDM optical transmission scheme includes an FMF on the input side, a collimating lens, an ND filter, a condensing lens, and an FMF on the output side. The ND filter includes partial ND filters combined each other and having main surfaces placed in parallel to each other, a ring portion having a low transmittance is provided in a part of the partial ND filter, and a ring portion having a low transmittance is also provided in a part of the partial ND filter. When the ring portions have different aspects, and the partial ND filters are adjusted and set to be slidable in directions of axes, respectively, the partial ND filters have a property that the transmittance of each mode of the signal light differs and can obtain a function of a variable mode equalization filter.
    Type: Application
    Filed: August 14, 2019
    Publication date: October 6, 2022
    Inventors: Hirotaka Ono, Takayuki Mizuno, Koki Shibahara, Yutaka Miyamoto
  • Patent number: 11450643
    Abstract: A bonded structure includes a first substrate; a second substrate placed opposite to the first substrate; an intermediate layer provided between the first substrate and the second substrate and including a first oxide thin film layered on the first substrate and a second oxide thin film layered on the second substrate; either or both of the first oxide thin film and the second oxide thin film of the intermediate layer being formed of oxide thin films having increased defects; and an interface between the first oxide thin film and the second oxide thin film=being bonded by chemical bonding, and the interface comprising a low-density portion whose density is lower than that of the two oxide thin films.
    Type: Grant
    Filed: February 14, 2022
    Date of Patent: September 20, 2022
    Assignees: TOHOKU UNIVERSITY, CANON ANELVA CORPORATION
    Inventors: Takehito Shimatsu, Miyuki Uomoto, Kazuo Miyamoto, Yoshikazu Miyamoto, Nobuhiko Katoh, Takayuki Moriwaki, Takayuki Saitoh
  • Publication number: 20220290675
    Abstract: The present invention relates to a pump apparatus for delivering a liquid. The pump apparatus includes a pump (1) having an impeller (5), an electric motor (7) for rotating the impeller (5), and an inverter (10) for driving the electric motor (7) at variable speed. The impeller (5) has a non-limit load characteristic in a predetermined discharge flow-rate range (R). The inverter (10) is configured to drive the electric motor (7) at a preset target operating point (TO) with a rotation speed higher than a rotation speed corresponding to a power frequency of a commercial power source.
    Type: Application
    Filed: June 10, 2020
    Publication date: September 15, 2022
    Applicant: Ebara Corporation
    Inventors: Hiroyuki KAWASAKI, Takayuki MIYAMOTO, Miwa HIDEKURA, Hoechun KIM, Satoshi YAMAZAKI, Xinshuai FAN
  • Patent number: 11441576
    Abstract: The present invention relates to a reinforcing structure for a casing accommodating an impeller. A double-suction centrifugal pump includes: a rotational shaft (1); an impeller (2) secured to the rotational shaft (1); a casing (3) that accommodates the impeller (2) therein; and legs (5) secured to the casing (3). The casing (3) includes a suction volute (20) that communicates with a suction port (6), the casing (3) includes an upper casing (3a) and a lower casing (3b) fastened to each other, at least one rib (28A, 28B, 28C) is provided on each of both side surfaces of the lower casing (3b) constituting the suction volute (20), the rib (28A, 28B, 28C) extends in a radial direction of the rotational shaft (1) when viewed from an axial direction of the rotational shaft (1), and the rib (28A, 28B, 28C) is separated from the legs (5).
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: September 13, 2022
    Assignee: EBARA CORPORATION
    Inventors: Soichiro Ogawa, Hiroyuki Kawasaki, Takayuki Miyamoto
  • Patent number: 11438071
    Abstract: An optical repeater in a mode-division-multiplexing (MDM) optical transmission system prevents a signal-to-noise ratio (SNR) from deteriorating due to a loss of a mode demultiplexer. The optical repeater in the MDM optical transmission system is configured to include at least one multimode optical amplifier, a mode demultiplexer, a mode multiplexer, and variable optical attenuators. One of the multimode optical amplifiers is disposed on the input side of the mode demultiplexer.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: September 6, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hirotaka Ono, Koki Shibahara, Takayuki Mizuno, Yutaka Miyamoto
  • Patent number: 11417388
    Abstract: Semiconductor devices that include circuitry to mitigate unstable or metastable states in logic circuits in response to receipt of an unassigned row address. The semiconductor device may include one or more logic circuits that are configured to adjust particular address-based control signals to mitigate processing based on the unassigned row address. For example, the one or more logic circuits may override processing of the unassigned row address to provide control signals that correspond to an assigned row address, which may allow the semiconductor device to operate in a known state, rather than performing operations based on an unassigned row address.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: August 16, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Takayuki Miyamoto, Satoshi Yamanaka
  • Publication number: 20220253644
    Abstract: It is possible to make a prediction with high accuracy even for a rapid change in the measurement data. A measurement point-to-point information generation unit (130) generates, based on setting data for making a prediction for a plurality of received measurement points, measurement point-to-point information which is information about between the measurement points. A change data generation unit (140) generates change data indicative of a change in the measurement data based on the received measurement data up to the current time. A prediction unit (150) predicts, for each of the plurality of measurement points, based on the measurement point-to-point information, the measurement data, and the change data, measurement data at the measurement point at a time after the current time.
    Type: Application
    Filed: June 12, 2019
    Publication date: August 11, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takayuki ADACHI, Akira NAKAYAMA, Masaru MIYAMOTO
  • Publication number: 20220248303
    Abstract: An information processing apparatus that is capable of making correct settings for wireless communication of which standards are different depending on the country, in conformity to the standards of a country where the information processing apparatus is used. On an image forming apparatus as the information processing apparatus, a wireless LAN module can be mounted which can be used in a plurality of specific countries and stores a country destination group number indicative of the plurality of specific countries in an OTP section. The image forming apparatus acquires the country destination group number as the group identification information from the OTP section of the mounted wireless LAN module. A control unit makes settings for enabling wireless communication using the mounted wireless LAN module, by using setting information on the acquired country destination group number.
    Type: Application
    Filed: February 1, 2022
    Publication date: August 4, 2022
    Inventors: Takayuki MIYAMOTO, Kozo TODA
  • Patent number: 11402794
    Abstract: An image forming apparatus includes image forming stations including respective electrophotographic photosensitive drums; an image transfer belt contactable to the drums; image transfer rollers, contactable to the transfer belt to urge the belt to the drums for transferring the toner images from the drums onto the belt, the rollers being provided with respective rotational shafts about an axis of which the rollers are rotatable; and a slidable member slidable in a direction in which the stations are arranged to retract the rollers away from the corresponding drums, the slidable member being provided with inclined surfaces contactable to the shafts, the inclined surfaces being disposed at such positions that the rollers are retracted from respective drums sequentially with the movement of the slidable member in the direction.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: August 2, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomomichi Kawashima, Takayuki Miyamoto