Patents by Inventor Keisuke Nakamura

Keisuke Nakamura 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: 20170040030
    Abstract: An audio processing apparatus includes a first-section detection unit configured to detect a first section that is a section in which the power of a spatial spectrum in a sound source direction is higher than a predetermined amount of power on the basis of an audio signal of a plurality of channels, a speech state determination unit configured to determine a speech state on the basis of an audio signal within the first section, a likelihood calculation unit configured to calculate a first likelihood that a type of sound source according to an audio signal within the first section is voice and a second likelihood that the type of sound source is non-voice, and a second-section detection unit configured to determine whether or not a second section in which power is higher than average the power of a speech section is a voice section on the basis of the first likelihood and the second likelihood within the second section.
    Type: Application
    Filed: June 27, 2016
    Publication date: February 9, 2017
    Inventors: Keisuke Nakamura, Kazuhiro Nakadai
  • Patent number: 9549274
    Abstract: A sound processing apparatus includes: a first sound collecting unit placed in a sound field and configured to collect a sound signal which is speech of a talker; a second sound collecting unit arranged to be movable to a position which is closer to a talker than the first sound collecting unit and configured to collect the sound signal; a transfer function estimating unit configured to estimate a transfer function from a sound signal collected by the first sound collecting unit and a sound signal collected by the second sound collecting unit when a talker is at a predetermined position in the sound field; and a sound signal processing unit configured to perform a process of the sound signal by use of the transfer function estimated by the transfer function estimating unit.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: January 17, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Keisuke Nakamura, Kazuhiro Nakadai
  • Patent number: 9542937
    Abstract: A sound processing device includes a noise suppression unit configured to suppress a noise component included in an input sound signal, an auxiliary noise addition unit configured to add auxiliary noise to the input sound signal, whose noise component has been suppressed by the noise suppression unit, to generate an auxiliary noise-added signal, a distortion calculation unit configured to calculate a degree of distortion of the auxiliary noise-added signal, and a control unit configured to control an addition amount by which the auxiliary noise addition unit adds the auxiliary noise based on the degree of distortion calculated by the distortion calculation unit.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: January 10, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kazuhiro Nakadai, Keisuke Nakamura, Daisuke Kimoto
  • Patent number: 9526469
    Abstract: In an embodiment, an X-ray diagnostic apparatus includes an image capturing unit which captures an X-ray image of a subject on a tabletop, a movement mechanism which moves the tabletop and the image capturing unit relative to each other, an acquisition unit which acquires device position information on the tabletop and the image capturing unit in capturing the X-ray image, a display unit which displays the X-ray image captured by the image capturing unit, an input unit which inputs added information to be added to the X-ray image displayed on the display unit, and a management unit which manages the X-ray image captured by the image capturing unit, the device position information acquired by the acquisition unit, and the added information inputted by the input unit in association with one another.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: December 27, 2016
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Kazuo Imagawa, Masanori Matsumoto, Toshiya Waku, Keisuke Nakamura, Naotaka Sato
  • Publication number: 20160372134
    Abstract: A speech recognition apparatus includes: a sound collection unit that collects a sound signal; a sound source localization unit that calculates a spatial spectrum from the sound signal that is collected by the sound collection unit and uses the calculated spatial spectrum to perform sound source localization; a speech zone determination unit that determines a zone in which a power of the spatial spectrum that is calculated by the sound source localization unit exceeds a predetermined threshold value based on a vehicle state; and a speech recognition unit that performs speech recognition with respect to a sound signal of the zone determined by the speech zone determination unit.
    Type: Application
    Filed: June 13, 2016
    Publication date: December 22, 2016
    Inventors: Kazuhiro Nakadai, Takeshi Mizumoto, Keisuke Nakamura, Masayuki Takigahira
  • Publication number: 20160372132
    Abstract: A voice enhancement device includes: a sound receiving unit configured to receive an audio signal; a vehicle state monitor unit configured to monitor a vehicle state; a noise estimation unit configured to estimate a noise component for each frequency component using a cumulative histogram created by accumulating frequency of power of the audio signal received by the sound receiving unit for each frequency component; and a voice enhancer configured to suppress the noise component for each frequency component estimated by the noise estimation unit in the received audio signal, wherein the noise estimation unit resets the cumulative histogram on the basis of a monitoring result of the vehicle state monitor unit.
    Type: Application
    Filed: June 6, 2016
    Publication date: December 22, 2016
    Inventors: Kazuhiro Nakadai, Takeshi Mizumoto, Keisuke Nakamura, Masayuki Takigahira
  • Publication number: 20160372129
    Abstract: A sound source separating device includes: a sound collecting unit configured to collect sound signals using a plurality of microphones; a sound source localizing unit configured to localize a sound source on the basis of the sound signals collected by the sound collecting unit; a sound source separating unit configured to separate the sound signals collected by the sound collecting unit into sound sources corresponding to the number of fixed sound sources and fixed sound source directions without using the sound source localization result from the sound source localizing unit; and a speech extracting unit configured to extract speech signals of the fixed sound sources on the basis of the sound source localization result from the sound source localizing unit and the sound source separation result from the sound source separating unit.
    Type: Application
    Filed: June 13, 2016
    Publication date: December 22, 2016
    Inventors: Kazuhiro Nakadai, Takeshi Mizumoto, Keisuke Nakamura
  • Patent number: 9504752
    Abstract: It is intended to provide a sterilizer, an oral cavity sterilizer, a sterilization method, a sterilization apparatus, and a sterilizer evaluation method capable of enhancing a sterilization effect. The sterilizer including hydrogen peroxide and a catalase activity inhibitor containing scutellaria or green tea is brought into contact with a sterilization target. Next, the sterilization target is irradiated with light having a wavelength of 350 nm to 500 nm using a light emitting device formed of a semiconductor laser. By the light irradiation, the hydrogen peroxide is photolyzed to generate hydroxy radicals, and sterilization is achieved by the thus-generated hydroxy radicals.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: November 29, 2016
    Assignee: AZ CO., LTD.
    Inventors: Taro Kanno, Keisuke Nakamura, Hiroyo Ikai, Masahiro Kono, Yoshimi Niwano
  • Patent number: 9507905
    Abstract: A non-transitory recording medium storing a program that causes a computer to execute a circuit board design assistance process. The circuit board design assistance process includes: extracting, from design information of a multilayer circuit board in which a plurality of layers are layered, a plurality of ground patterns in the multilayer circuit board that are within a predetermined distance from a path of a signal that flows in the multilayer circuit board; resolving a region at which the plurality of ground patterns are electronically separated as being a discontinuity region; and displaying the resolved discontinuity region.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: November 29, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Yoshiaki Hiratsuka, Kenji Nagase, Tomoyuki Nakao, Yoshihiro Sawada, Keisuke Nakamura
  • Publication number: 20160344121
    Abstract: A connector has contacts and a housing having holding grooves which accommodate the contacts. Each of the holding grooves has an inner wall extending in a first direction. Each of the contacts has a fixed portion, a contact arm portion and a support arm portion. The fixed portion is fixed to a corresponding one of the holding grooves. The contact arm portion and the support arm portion extend from the fixed portion in the first direction and are disposed apart from each other in a second direction. The contact arm portion has a contact point and is resiliently deformable to move the contact point in the second direction. The support arm portion comes into contact with the inner wall of the corresponding one of the holding grooves at least when the contact arm portion is resiliently deformed so that the contact point comes close to the support arm portion.
    Type: Application
    Filed: April 13, 2016
    Publication date: November 24, 2016
    Applicant: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
    Inventors: Tetsuya KOMOTO, Osamu HASHIGUCHI, Yu TATEBE, Keisuke NAKAMURA
  • Publication number: 20160318801
    Abstract: The present invention is a hydraulic composition, which includes an ?-hydroxy sulfonic acid or a salt thereof, a hydraulic powder and water, wherein the ratio of slag in the hydraulic powder is 60% by mass or more.
    Type: Application
    Filed: August 27, 2015
    Publication date: November 3, 2016
    Applicant: KAO CORPORATION
    Inventors: Keiichiro SAGAWA, Keisuke NAKAMURA, Masaaki SHIMODA, Koji NAGASAWA
  • Patent number: 9478230
    Abstract: A speech processing apparatus that collects sound signals. With each of the collected sound signals, the apparatus may estimate a direction of a sound source, and select an extension filter that is applied to each sound signal. The extension filter may correspond to the estimated sound source of each of the sound signals. In addition, each of the sound signals may be corrected using the extension filter, and a reverberation reduction of the corrected sound signals and the collected sound signals may be performed.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: October 25, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Randy Gomez, Kazuhiro Nakadai, Keisuke Nakamura
  • Publication number: 20160294094
    Abstract: A connector includes contact pairs arranged on and fixed to a housing, each of the contact pairs being consisted of two contacts that are insulated from each other, and elasticity-reinforcing members corresponding to the contact pairs, each of the elasticity-reinforcing members being not fixed to the housing but held by a corresponding contact pair among the contact pairs, wherein the two contacts constituting each contact pair respectively include contacting portions that come into contact with corresponding contacts of a counter-connector, are made of elastic contact pieces extending in a fitting direction with the counter-connector and are disposed such that the contacting portions face each other, wherein each elasticity-reinforcing member sandwiches the two contacts constituting the corresponding contact pair at outer sides of the facing contacting portions of the two contacts and comes into contact with the two contacts while maintaining insulation property.
    Type: Application
    Filed: February 8, 2016
    Publication date: October 6, 2016
    Inventor: Keisuke NAKAMURA
  • Patent number: 9391383
    Abstract: A connector is connectable with a plate-like or sheet-like object having an upper surface and a lower surface in an up-down direction. The upper surface is formed with an upper signal line. The lower surface is formed with a lower signal line. The connector comprises a first terminal, a second terminal, an insulator member and a housing. The first terminal has an upper-jaw portion and a lower-jaw portion. The upper-jaw portion is provided with an upper contact point. The lower-jaw portion is provided with a lower receiving portion. The second terminal is provided with a lower contact point and a press portion. When the object is connected to the connector, the insulator member is sandwiched between the press portion and the lower receiving portion to insulate the first terminal and the second terminal from each other.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: July 12, 2016
    Assignee: Japan Aviation Electronics Industry, Limited
    Inventor: Keisuke Nakamura
  • Patent number: 9384760
    Abstract: A sound processing device includes a first noise suppression unit configured to suppress a noise component included in an input sound signal using a first suppression amount, a second noise suppression unit configured to suppress the noise component included in the input sound signal using a second suppression amount greater than the first suppression amount, a speech section detection unit configured to detect whether the sound signal whose noise component has been suppressed by the second noise suppression unit includes a speech section having a speech for every predetermined time, and a speech recognition unit configured to perform a speech recognizing process on a section, which is detected to be a speech section by the speech section detection unit, in the sound signal whose noise component has been suppressed by the first noise suppression unit.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: July 5, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kazuhiro Nakadai, Keisuke Nakamura, Tatsuya Higuchi
  • Patent number: 9378752
    Abstract: A sound processing device includes a separation unit configured to separate at least a music signal and a speech signal from a recorded audio signal, a noise suppression unit, a music feature value estimation unit, a speech recognition unit, a noise-processing confidence calculation unit, a music feature value estimation confidence calculation unit, a speech recognition confidence calculation unit, and a control unit configured to calculate at least one behavioral decision function of a speech behavioral decision function associated with speech and a music behavioral decision function associated with music based on a noise-processing confidence value, a music feature value estimation confidence value, and a speech recognition confidence value and to determine behavior corresponding to the calculated behavioral decision function.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: June 28, 2016
    Assignees: Honda Motor Co., Ltd., UNIVERSIDATE DO PORTO, INESC Porto
    Inventors: João Lobato Oliveira, Gökhan Ince, Keisuke Nakamura, Kazuhiro Nakadai, Hiroshi Okuno, Luis Paulo Reis, Fabien Gouyon
  • Publication number: 20160164207
    Abstract: An electrical connector includes a plurality of contacts, each contact having a first contact point electrically connected to a wiring pattern of a first connection object at one end and a second contact point mounted and fixed onto a wiring pattern of a second connection object by soldering at the other end, and the plurality of contacts is arranged in accordance with a predetermined wiring pattern, and after the second contact is mounted and fixed onto the wiring pattern of the second connection object, portions other than the second contact point of each contact are not fixed and bound with respect to the second connection object.
    Type: Application
    Filed: February 11, 2016
    Publication date: June 9, 2016
    Inventors: Keisuke NAKAMURA, Osamu HASHIGUCHI
  • Publication number: 20160151640
    Abstract: A dental treatment device in which attenuation of a laser beam is not liable to occur is provided. This dental treatment device is provided with a vibration unit for vibrating by a vibrator that generates ultrasonic vibrations, a chip unit connected to the vibration unit and through which ultrasonic vibrations are transmitted, a flow channel for discharging an antimicrobial agent from the chip unit, and an optical system for irradiating a laser beam for photo-decomposing the antimicrobial agent from the chip unit, the optical system having an optical path separate from the flow channel.
    Type: Application
    Filed: June 12, 2014
    Publication date: June 2, 2016
    Inventors: Taro KANNO, Keisuke NAKAMURA, Yoshimi NIWANO, Minoru KANNO
  • Patent number: 9356407
    Abstract: Along an up-down direction, a connector is mateable with a mating connector which includes a plurality of mating terminals each having a mating contact point. The connector comprises a plurality of terminals which are, at least in part, accommodated by a housing. The terminals are arranged in a first direction perpendicular to the up-down direction. Each of the terminals has a first portion, a second portion and a coupling portion. The first portion includes a contact point and a guiding portion. The contact point is positioned apart from the second portion in a second direction perpendicular to both the up-down direction and the first direction. The contact point is in contact with the mating contact point while the mating contact point is positioned between the contact point and the second portion in the second direction in the mated state. The guiding portion is positioned above the contact point and guides the mating contact point towards the contact point upon the mating.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: May 31, 2016
    Assignee: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
    Inventor: Keisuke Nakamura
  • Patent number: 9336777
    Abstract: A speech processing device includes a speech recognition unit configured to sequentially recognize recognition segments from an input speech, a reverberation influence storage unit configured to store a degree of reverberation influence indicating an influence of a reverberation based on a preceding speech to a subsequent speech subsequent to the preceding speech and a recognition segment group including a plurality of recognition segments in correlation with each other, a reverberation influence selection unit configured to select the degree of reverberation influence corresponding to the recognition segment group which includes the plurality of recognition segments recognized by the speech recognition unit from the reverberation influence storage unit, and a reverberation reduction unit configured to remove a reverberation component weighted with the degree of reverberation influence from the speech from which at least a part of recognition segments of the recognition segment group is recognized.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: May 10, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Randy Gomez, Kazuhiro Nakadai, Keisuke Nakamura