Patents by Inventor Akihiko Sugiyama

Akihiko Sugiyama 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: 10515650
    Abstract: A signal processing apparatus, for processing sounds collected in an environment where a target sound and an interfering sound are mixed in order to estimate a diffuse interfering sound accurately, is provided. The signal processing apparatus includes phase difference calculating means and generating means. The phase difference calculating means calculates a phase difference between the first input signal and the second input signal. The first input signal is generated based on the first input sound which is input in the environment where the target sound and the interfering sound are mixed. The second input signal is generated based on the second input sound which is input in the environment. The generating means generates an estimated interfering sound signal, based on the phase difference and the first input signal.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: December 24, 2019
    Assignee: NEC CORPORATION
    Inventors: Masanori Kato, Akihiko Sugiyama
  • Publication number: 20190362815
    Abstract: A flip-flop circuit is disclosed. The flip-flop circuit includes a single-input inverter, a dual-input inverter, a single-input tri-state inverter, a dual-input tri-state inverter, and two single-event transient (SET) filters. The single-input tri-state inverter receives an input signal D. The dual-input tri-state inverter includes a first input, a second input and an output, wherein the first input receives output signals from the dual-input inverter and the second input receives output signals from the dual-input inverter via the first SET filter. The output of the dual-input tri-state inverter sends output signals to a first input of the dual-input inverter and a second input of the dual-input inverter via the second SET filter. The single-input inverter receives inputs from the dual-input inverter to provide an output signal Q for the flip-flop circuit.
    Type: Application
    Filed: August 7, 2019
    Publication date: November 28, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Atsushi Tomonaga, Hajime Sugiyama, Akihiko Ueda
  • Patent number: 10453471
    Abstract: A double-talk detecting method including estimating a noise contained in a mixed signal containing at least an echo, a near-end signal and a noise to determine an estimated noise; and detecting a presence of a near-end signal contained in said mixed signal using said estimated noise.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: October 22, 2019
    Assignee: NEC CORPORATION
    Inventor: Akihiko Sugiyama
  • Patent number: 10447516
    Abstract: To obtain a high-quality enhanced signal, there is provided an apparatus including a transformer that transforms a mixed signal, in which a first signal and a second signal coexist, into a phase component for each frequency and one of an amplitude component and a power component for each frequency, a change amount generator that generates a change amount of the phase component at a predetermined frequency by using a series of data with a cross-correlation weaker than that of the phase components and randomness lower than that of random numbers, a phase controller that controls the phase component by using the change amount provided from the change amount generator, and an inverse transformer that generates an enhanced signal by using the phase component having undergone control processing by the phase controller.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: October 15, 2019
    Assignee: NEC CORPORATION
    Inventor: Akihiko Sugiyama
  • Publication number: 20190307020
    Abstract: A cooling apparatus includes a cold plate including a lower surface to be in contact with a heat-radiating component, and a first coolant passage in which a coolant flows, a radiator including fins to perform cooling, and a second coolant passage in which the coolant flows, and a pump connected to each of the first coolant passage and the second coolant passage to circulate the coolant. The radiator is provided on the cold plate. The pump is adjacent to the radiator.
    Type: Application
    Filed: March 11, 2019
    Publication date: October 3, 2019
    Inventors: Nobuya NAKAE, Akihiko MAKITA, Hidenobu TAKESHITA, Tomotsugu SUGIYAMA
  • Publication number: 20190307019
    Abstract: A cooling apparatus includes a cold plate including a lower surface to be in contact with a heat-radiating component, and a first coolant passage in which a coolant flows, a radiator including fins to perform cooling and pipes each defining a second coolant passage in communication with the first coolant passage, a pump to circulate the coolant, a first tank joined to one end of each of the pipes, and a second tank to join another end of each of the pipes to the pump. The radiator is provided on the cold plate, and the pump is adjacent to the second tank.
    Type: Application
    Filed: March 11, 2019
    Publication date: October 3, 2019
    Inventors: Nobuya NAKAE, Akihiko MAKITA, Hidenobu TAKESHITA, Tomotsugu SUGIYAMA, Toshihiko TOKESHI, Takehito TAMAOKA
  • Patent number: 10431243
    Abstract: This invention provides a signal processing apparatus for improving the speech determination accuracy in an input sound. The signal processing apparatus includes a transformer that transforms an input signal into an amplitude component signal in a frequency domain, a calculator that calculates a norm of a change in the amplitude component signal in a frequency direction, an accumulator that accumulates the norm of the change in the amplitude component signal in the frequency direction calculated by the calculator, and an analyzer that analyzes speech in the input signal in accordance with an accumulated value of the norm of the change in the amplitude component signal in the frequency direction calculated by the accumulator.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: October 1, 2019
    Assignee: NEC CORPORATION
    Inventors: Masanori Kato, Akihiko Sugiyama
  • Publication number: 20190285168
    Abstract: In a power transmitting system of a vehicle including a differential gear device including a differential shaft; a first oil pump; a first oil strainer connected to the first oil pump; a second oil pump; a second oil strainer connected to the second oil pump; and a casing within which the engine drive shaft, the differential gear device, the first and second oil pumps, and the first and second oil strainers are accommodated, such that the engine drive shaft and the differential shaft of the differential gear device are spaced apart from each other in a longitudinal direction of the vehicle, the first and the second oil strainers are disposed between the engine drive shaft and the differential shaft of the differential gear device in the longitudinal direction of the vehicle, and are spaced apart from each other in an axial direction of the engine drive shaft.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 19, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Akihiko IKEDA, Masataka SUGIYAMA, Tomoaki SUZUKI, Hiroshi KATO, Satoshi MIYANAGA, Kenji ASAI
  • Publication number: 20190264797
    Abstract: In a power transmission device for a vehicle, comprising: a transaxle casing in which a motor and a voltage power line are housed; and a cover attached so as to close an opening of the transaxle casing, the cover includes a flange portion provided at an outer edge portion of the cover and connected to the opening of the transaxle casing, a bearing support portion for a bearing that supports a rotary shaft rotatably, and a cover wall provided between the flange portion and the bearing support portion, and a valve body is attached to the cover wall so as to be positioned at a portion of the cover wall at which a direct distance between the bearing support portion and the flange portion surrounding the bearing support portion is longest.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Applicants: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Masataka SUGIYAMA, Kenji TANABE, Takeshi KUWAHARA, Tomohisa TAGA, Akihiko IKEDA, Fumiaki SHIGEMATSU, Atomi ARAKAWA, Masamitsu SENO
  • Patent number: 10358008
    Abstract: A suspension coil spring includes a lower end turn portion, an upper end turn portion, and a helical effective portion formed between the end turn portions. The lower end turn portion includes a first portion which contacts a lower spring seat irrespective of a load, and a second portion which contacts the lower spring seat or is separated from the same according to the load. The wire diameter of the second portion is greater than that of the first portion and an average wire diameter of the effective portion. The upper end turn portion includes a third portion which contacts an upper spring seat, and a fourth portion. The wire diameter of the fourth portion is greater that of the third portion and the average wire diameter of the effective portion.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: July 23, 2019
    Assignee: NHK SPRING CO., LTD.
    Inventors: Kenji Yamamotoya, Hideto Enomoto, Ken Takahashi, Toshiaki Sato, Mitsuhiro Sugiyama, Yoshio Kobayashi, Taichi Inage, Tomotake Kato, Akihiko Nishikawa, Masahiro Umezawa, Michihiko Ayada, Suguru Kajigaya
  • Publication number: 20190219659
    Abstract: A wideband signal is enhanced or suppressed to the same extent at each frequency without increasing the size of an overall sensor array. To achieve this, there is provided a signal processing apparatus including a direction estimator that obtains a direction of arrival of a signal for signals received from a plurality of sensors and each containing a target signal and noise, a first gain calculator that calculates a first gain using the direction of arrival of the signal, an integrator that obtains an integrated signal by integrating the signals received from the plurality of sensors, and a multiplier that multiplies the first gain by the integrated signal.
    Type: Application
    Filed: March 26, 2019
    Publication date: July 18, 2019
    Applicants: NEC Corporation, NEC PLATFORMS, LTD.
    Inventors: Akihiko SUGIYAMA, Ryoji MIYAHARA
  • Publication number: 20190171193
    Abstract: A design method of a semiconductor manufacturing apparatus which can satisfy a specification required by a user is disclosed. The design method of the semiconductor manufacturing apparatus includes creating a program setting file; creating a program installer from the program setting file; operating a processing unit of the semiconductor manufacturing apparatus; specifying a sensor corresponding to the processing unit based on the operation of the processing unit; creating a sensor setting file storing information obtained by specifying the sensor; comparing a content of a requirement specification and a content of the sensor setting file to confirm a consistency between the content of the requirement specification and the content of the sensor setting file; and introducing a program into a memory of a controller by the program installer when the content of the requirement specification and the content of the sensor setting file are consistent with each other.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 6, 2019
    Applicant: Ebara Corporation
    Inventors: Ryuichiro MITANI, Mitsunori SUGIYAMA, Akihiko OGAWA
  • Patent number: 10300558
    Abstract: A laser processing machine includes a laser oscillator. The laser oscillator excites a laser beam having a wavelength in a 1 ?m band or a shorter wavelength band. One process fiber transmits the laser beam emitted from the laser oscillator. A focusing optical element focuses, when a workpiece is irradiated with the laser beam emitted from the process fiber, the laser beam on a plurality of spots in a unit area within a unit time, the unit area having a radius of 0.5 mm of an optical axis of the laser beam, and the unit time being a time from when the workpiece starts to melt to when the melting of the workpiece ends.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: May 28, 2019
    Assignee: AMADA HOLDINGS CO., LTD.
    Inventors: Hiroshi Sako, Hiroaki Ishiguro, Akihiko Sugiyama, Yuya Mizoguchi
  • Patent number: 10276178
    Abstract: A signal processing apparatus for effectively detecting an abrupt change in a signal, in particular, an abrupt change different from an ideal pulse includes a converter that converts an input signal into a phase component signal in a frequency domain, a first calculator that calculates a phase gradient for each of a plurality of frequencies of the phase component signal as a first phase gradient, a weighting unit that weights the first phase gradient with an amplitude or a power of the input signal, thereby calculating a weighted first phase gradient, a second calculator that calculates a second phase gradient based on the weighted first phase gradient, and a determiner that determines presence of an abrupt change in the input signal based on the first phase gradient and the second phase gradient.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: April 30, 2019
    Assignee: NEC Corporation
    Inventors: Akihiko Sugiyama, Ryoji Miyahara
  • Publication number: 20190118304
    Abstract: A period of time during which a laser beam moves through an inner region of a beam spot that ranges from a center of the beam spot to an area corresponding to a thermal energy of 44% with respect to a total thermal energy of the beam spot is set as a moving time tp. “c”, “?”, “?”, “T”. “T0”, “A”, and “Pd” respectively represents a specific heat, a density, a thermal conductivity, a melting temperature, an environmental temperature, a light absorptance, and an energy density of the inner region. A time calculated from Equation (1) is set as a melting time tm. A plate thickness is represented by x and a value of tm/tp is represented by y. The value y is set between a lower limit value (Equation (2)) and an upper limit value (Equation (3)). tm=c×?×?×?[(T?T0)/(2×A×Pd)]2 ??(1) y=0.0027e0.36x ??(2) y=0.0026e0.
    Type: Application
    Filed: April 13, 2017
    Publication date: April 25, 2019
    Applicant: AMADA HOLDINGS CO., LTD.
    Inventors: Akihiko SUGIYAMA, Yuya MIZOGUCHI, Masahito ITO, Masato KUNIHIRO
  • Patent number: 10236019
    Abstract: This invention enables to effectively detect an abrupt change in a signal. The signal processing apparatus includes a converter that converts an input signal into a phase component signal in a frequency domain, a first calculator that calculates a first phase gradient as a gradient of the phase of the phase component signal, a second calculator that calculates a second phase gradient using the first phase gradients at a plurality of frequencies, and a determiner that determines existability concerning an abrupt change in the input signal based on the first phase gradients and the second phase gradient.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: March 19, 2019
    Assignee: NEC Corporation
    Inventor: Akihiko Sugiyama
  • Publication number: 20190027159
    Abstract: There is provided a signal processing apparatus for amplifying or attenuating, with respect to a signal in which a desired signal and another signal are mixed, the desired signal and the other signal at different ratios. The signal processing apparatus includes a separator that obtains an estimated first signal and an estimated second signal by receiving a mixed signal in which a first signal (for example, speech) and a second signal (for example, noise) are mixed and estimating the first signal and the second signal. Furthermore, the signal processing apparatus includes a gain adjuster that obtains a gain-adjusted mixed signal by receiving the estimated first signal and the estimated second signal.
    Type: Application
    Filed: December 20, 2016
    Publication date: January 24, 2019
    Applicants: NEC CORPORATION, NEC Platforms, Ltd.
    Inventors: Akihiko SUGIYAMA, Ryoji MIYAHARA
  • Patent number: 10118256
    Abstract: Using a transmission fiber for transmitting laser beams of multiple wavelengths oscillated by a DDL module, and a laser processing machine for cutting a sheet metal with a processing head that condenses the laser beams of multiple wavelengths and irradiates them onto the sheet metal, a mild steel plate or an aluminum plate is cut, and by cutting a mild steel plate with a thickness greater than or equal to 1 mm and less than or equal to 5 mm, a surface roughness (Ra) of a cut surface of the cut mild steel plate is less than or equal to 0.4 ?m, and when an aluminum plate with a thickness greater than or equal to 1 mm and less than or equal to 5 mm is cut, a surface roughness (Ra) of a cut surface of the cut aluminum plate is less than or equal to 2.5 ?m.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: November 6, 2018
    Assignee: AMADA HOLDINGS CO., LTD.
    Inventors: Hiroaki Ishiguro, Akihiko Sugiyama, Hiroshi Sako
  • Patent number: 10026414
    Abstract: A speech processing system placed in a vehicle to effectively acquire a voice of a driver includes a first microphone that is provided on a surface facing the driver of the vehicle out of a steering wheel of the vehicle, and inputs a voice of the driver, a second microphone that is provided at a position where the voice of the driver of the vehicle is blocked by at least part of the steering wheel in the vehicle, and inputs noise in the vehicle, and a noise suppressor that suppresses an estimated noise signal based on a first signal corresponding to the sound input to the first microphone and a second signal corresponding to the sound input to the second microphone, and generates and outputs a pseudo speech signal.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: July 17, 2018
    Assignee: NEC Corporation
    Inventors: Masanori Tsujikawa, Akihiko Sugiyama
  • Publication number: 20180190311
    Abstract: A signal processing apparatus, for processing sounds collected in an environment where a target sound and an interfering sound are mixed in order to estimate a diffuse interfering sound accurately, is provided. The signal processing apparatus includes phase difference calculating means and generating means. The phase difference calculating means calculates a phase difference between the first input signal and the second input signal. The first input signal is generated based on the first input sound which is input in the environment where the target sound and the interfering sound are mixed. The second input signal is generated based on the second input sound which is input in the environment. The generating means generates an estimated interfering sound signal, based on the phase difference and the first input signal.
    Type: Application
    Filed: June 2, 2016
    Publication date: July 5, 2018
    Applicant: NEC Corporation
    Inventors: Masanori KATO, Akihiko SUGIYAMA