Patents by Inventor Yu Takahashi

Yu Takahashi 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: 9824674
    Abstract: A recording method includes acquiring each piece of acoustic data representing a sound from each of a plurality of portable terminal devices. The each of the plurality of portable terminal devices includes a recording unit configured to generate the piece of acoustic data. The recording method also includes executing synchronization processing for synchronizing the respective pieces of acoustic data and executing mixing processing for mixing a plurality of pieces of acoustic data for which the synchronization processing has been executed.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: November 21, 2017
    Assignee: Yamaha Corporation
    Inventors: Yu Takahashi, Kazunobu Kondo, Motoichi Tamura
  • Publication number: 20170287714
    Abstract: A method for manufacturing a semiconductor substrate that, even when a substrate which has, on a surface thereof, a three-dimensional structure having nanometer-scale microvoids on a surface thereof is used, can allow an impurity diffusion ingredient to be uniformly diffused into the substrate at the whole area thereof where the diffusion agent composition is coated, including the whole inner surfaces of the microvoids, while suppressing the occurrence of defects in the substrate. A coating film having a thickness of not more than 30 nm is formed on a surface of a substrate under such conditions that an atmosphere around the substrate has a relative humidity of not more than 40%, using a diffusion agent composition comprising an impurity diffusion ingredient and a Si compound that is hydrolyzable to produce a silanol group.
    Type: Application
    Filed: March 24, 2017
    Publication date: October 5, 2017
    Inventors: Yoshihiro SAWADA, Yu TAKAHASHI
  • Publication number: 20170278711
    Abstract: A diffusion agent composition that, even when a semiconductor substrate which is an object into which an impurity diffusion ingredient is to be diffused has, on a surface thereof, a three-dimensional structure having nano-scale fine voids on a surface thereof, can be evenly coated on the whole area of an inner surface of the fine voids, whereby boron can be diffused into the semiconductor substrate, and a method for manufacturing a semiconductor substrate using the composition. The composition includes an impurity diffusion ingredient and a hydrolyzable Si compound to produce a silanol group, the impurity diffusion ingredient containing a complex compound containing boron having a specific structure.
    Type: Application
    Filed: March 23, 2017
    Publication date: September 28, 2017
    Inventors: Yoshihiro SAWADA, Yu TAKAHASHI, Takuya OHHASHI
  • Publication number: 20170232849
    Abstract: A vehicle brake system, including: a brake operation member to be operated by a driver of a vehicle; a hydraulic brake device provided for one of a front wheel and a rear wheel and configured to generate a hydraulic braking force in accordance with an operation of the brake operation member, the hydraulic braking force depending on a pressure of a working fluid; and an electric brake device provided for the other of the front wheel and the rear wheel and configured to generate an electric braking force in accordance with the operation of the brake operation member, the electric braking force depending on a motion of an electric motor.
    Type: Application
    Filed: December 16, 2016
    Publication date: August 17, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki YAMAMOTO, Yu TAKAHASHI
  • Publication number: 20170090128
    Abstract: Disclosed is an optical module configured to be provided to an end part of an optical cable. The optical module includes: a housing wherein, when the optical module side as viewed from the optical cable is defined as the front side and the opposite side therefrom is defined as the rear side, a front-side section of the housing is configured to be inserted into a cage, and a boot for protecting the optical cable extends from the rear side of the housing; a latch-releasing part attached slidably in the front/rear direction to the housing, the latch-releasing part having a projection for releasing a latched state established by a catch on the cage; a tab for pulling the latch-releasing part toward the rear to cause the projection to release the latched state established by the catch on the cage; and a push part that is to be pressed by an operator until the latched state is established, the push part having a rear end surface located more toward the rear than the boot.
    Type: Application
    Filed: December 12, 2016
    Publication date: March 30, 2017
    Applicant: FUJIKURA LTD.
    Inventors: Masao MORI, Yu TAKAHASHI, Susumu OKABE
  • Patent number: 9472176
    Abstract: A musical instrument includes: an operation section which is configured to accept a playing operation; a generation section which is configured to generate performance information representative of the accepted playing operation; a detection section which is configured to detect a portable terminal; and a control section which is configured to start, when the portable terminal is detected, processing of recording at least one of the performance information generated by the generation section and a video obtained by shooting a scene where the playing operation is performed, into at least one of the musical instrument and the portable terminal.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: October 18, 2016
    Assignee: YAMAHA CORPORATION
    Inventor: Yu Takahashi
  • Publication number: 20160125862
    Abstract: A musical instrument includes: an operation section which is configured to accept a playing operation; a generation section which is configured to generate performance information representative of the accepted playing operation; a detection section which is configured to detect a portable terminal; and a control section which is configured to start, when the portable terminal is detected, processing of recording at least one of the performance information generated by the generation section and a video obtained by shooting a scene where the playing operation is performed, into at least one of the musical instrument and the portable terminal.
    Type: Application
    Filed: May 19, 2014
    Publication date: May 5, 2016
    Inventor: Yu TAKAHASHI
  • Publication number: 20160104469
    Abstract: A musical-performance analysis device includes: an acquisition section that acquires performance information of a player; a determination section that determines, by comparing the performance information acquired by the acquisition section with reference information indicating a reference of a performance, among performance segments different from one another, a performance segment in which a difference degree between the performance information acquired by the acquisition section and the reference information is large and a performance segment in which the difference degree between the performance information acquired by the acquisition section and the reference information is small; and the specification section that specifies a tendency of the performance on the basis of the difference degree of the performance segment in which the difference degree has been determined to be small by the determination section.
    Type: Application
    Filed: May 23, 2014
    Publication date: April 14, 2016
    Inventors: Yu TAKAHASHI, Yoshitaka URATANI, Fukutaro OKUYAMA, Taro KAWABATA, Koichi ISHIZAKI, Dan SASAI, Yoshinari NAKAMURA, Daichi WATANABE, Risa KOMURO
  • Publication number: 20160039292
    Abstract: A brake ECU110 memorizes a deceleration A of a vehicle body when a braking mode is shifted from a regenerative braking mode to a cooperative braking mode (S31). The brake ECU110 memorizes a deceleration B at the time of shifting to a friction braking mode, when the braking mode is shifted from the cooperative braking mode to a friction braking mode in a status that a brake operation is retained constant (S32 to S37). The brake ECU110 computes a deceleration ratio ? by dividing the deceleration A by the deceleration B, and updates the deceleration ratio ? (S39). The brake ECU110 corrects a target fluid pressure P* using this deceleration ratio ? (P*=P*×?). Thereby, a fluctuation of the deceleration at the time of a transition of a braking mode can be suppressed.
    Type: Application
    Filed: April 9, 2013
    Publication date: February 11, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yu TAKAHASHI
  • Patent number: 9106993
    Abstract: In a sound processing apparatus, a likelihood calculation unit calculates an in-region coefficient and an out-of-region coefficient indicating likelihood of generation of each frequency component of a sound signal inside and outside a target localization range, respectively, according to localization of each frequency component. A reverberation analysis unit calculates a reverberation index value according to the ratio of a reverberation component for each frequency component. A coefficient setting unit generates a process coefficient for suppressing or emphasizing a reverberation component generated inside or outside the target localization range, for each frequency component of the sound signal, on the basis of the in-region coefficient, the out-of-region coefficient and the reverberation index value. A signal processing unit applies the process coefficient of each frequency component to each frequency component of the sound signal.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: August 11, 2015
    Assignee: Yamaha Corporation
    Inventors: Kazunobu Kondo, Yu Takahashi, Yasuyuki Umeyama
  • Patent number: 9045116
    Abstract: A brake system includes: (a) friction brakes provided for at least two wheels that are at least two of a plurality of wheels of a vehicle; (b) a relative-phase obtaining device configured to obtain at least one relative phase each of which is a relative phase between corresponding two of the at least two wheels; and (c) a change-characteristic obtaining device configured to obtain a total-braking-force change characteristic that is a relationship between the relative phase obtained by the relative-phase obtaining device and a value representative of state of change of a total braking force during at least one rotation of the at least two wheels. The total braking force includes braking forces of the friction brakes provided for the at least two wheels.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: June 2, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yu Takahashi, Daisuke Nakata
  • Publication number: 20150104043
    Abstract: A recording method includes acquiring each piece of acoustic data representing a sound from each of a plurality of portable terminal devices. The each of the plurality of portable terminal devices includes a recording unit configured to generate the piece of acoustic data. The recording method also includes executing synchronization processing for synchronizing the respective pieces of acoustic data and executing mixing processing for mixing a plurality of pieces of acoustic data for which the synchronization processing has been executed.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 16, 2015
    Inventors: Yu TAKAHASHI, Kazunobu KONDO, Motoichi TAMURA
  • Patent number: 9002035
    Abstract: Signal processing section of a terminal converts acquired audio signals of a plurality of channels into frequency spectra set, calculates sound image positions corresponding to individual frequency components, and displays, on a display screen, the calculated sound image positions results by use of a coordinate system having coordinate axes of the frequency components and sound image positions. User-designated partial region of the coordinate system is set as a designated region and an amplitude-level adjusting amount is set for the designated region, so that the signal processing section adjusts amplitude levels of frequency components included in the frequency spectra and in the designated region, converts the adjusted frequency components into audio signals and outputs the converted audio signals.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: April 7, 2015
    Assignee: Yamaha Corporation
    Inventors: Yasuyuki Umeyama, Kazunobu Kondo, Yu Takahashi, Jordi Bonada, Jordi Janer, Ricard Marxer
  • Publication number: 20140052339
    Abstract: A brake system includes: (a) friction brakes provided for at least two wheels that are at least two of a plurality of wheels of a vehicle; (b) a relative-phase obtaining device configured to obtain at least one relative phase each of which is a relative phase between corresponding two of the at least two wheels; and (c) a change-characteristic obtaining device configured to obtain a total-braking-force change characteristic that is a relationship between the relative phase obtained by the relative-phase obtaining device and a value representative of state of change of a total braking force during at least one rotation of the at least two wheels. The total braking force includes braking forces of the friction brakes provided for the at least two wheels.
    Type: Application
    Filed: April 22, 2011
    Publication date: February 20, 2014
    Inventors: Yu Takahashi, Daisuke Nakata
  • Publication number: 20130322644
    Abstract: A sound processing apparatus has one or more of processors configured to suppress peaks that exist in a high-order region of a cepstrum of a sound signal and that correspond to a harmonic structure of the sound signal. The processor is further configured to generate a separation mask used to suppress a harmonic component or a nonharmonic component of the sound signal based on a resultant cepstrum in which the peaks of the high-order region have been suppressed.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 5, 2013
    Applicant: Yamaha Corporation
    Inventor: Yu TAKAHASHI
  • Publication number: 20130243211
    Abstract: In a sound processing apparatus, a likelihood calculation unit calculates an in-region coefficient and an out-of-region coefficient indicating likelihood of generation of each frequency component of a sound signal inside and outside a target localization range, respectively, according to localization of each frequency component. A reverberation analysis unit calculates a reverberation index value according to the ratio of a reverberation component for each frequency component. A coefficient setting unit generates a process coefficient for suppressing or emphasizing a reverberation component generated inside or outside the target localization range, for each frequency component of the sound signal, on the basis of the in-region coefficient, the out-of-region coefficient and the reverberation index value. A signal processing unit applies the process coefficient of each frequency component to each frequency component of the sound signal.
    Type: Application
    Filed: March 8, 2013
    Publication date: September 19, 2013
    Applicant: Yamaha Corporation
    Inventors: Kazunobu KONDO, Yu TAKAHASHI, Yasuyuki UMEYAMA
  • Publication number: 20130010968
    Abstract: In a sound processing apparatus, a matrix factorization unit acquires a non-negative first basis matrix including a plurality of basis vectors that represent spectra of sound components of a first sound source, and acquires an observation matrix that represents time series of a spectrum of a sound signal corresponding to a mixed sound of the first sound source and a second sound source different from the first sound source. The matrix factorization unit generates a first coefficient matrix, a second basis matrix and a second coefficient matrix from the observation matrix by non-negative matrix factorization using the first basis matrix. A sound generation unit generates either of a sound signal according to the first basis matrix and the first coefficient matrix or a sound signal according to the second basis matrix and the second coefficient matrix.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 10, 2013
    Applicant: YAMAHA CORPORATION
    Inventors: Kosuke YAGI, Hiroshi SARUWATARI, Yu TAKAHASHI
  • Publication number: 20120201385
    Abstract: Signal processing section of a terminal converts acquired audio signals of a plurality of channels into frequency spectra set, calculates sound image positions corresponding to individual frequency components, and displays, on a display screen, the calculated sound image positions results by use of a coordinate system having coordinate axes of the frequency components and sound image positions. User-designated partial region of the coordinate system is set as a designated region and an amplitude-level adjusting amount is set for the designated region, so that the signal processing section adjusts amplitude levels of frequency components included in the frequency spectra and in the designated region, converts the adjusted frequency components into audio signals and outputs the converted audio signals.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 9, 2012
    Applicant: YAMAHA CORPORATION
    Inventors: Yasuyuki UMEYAMA, Kazunobu Kondo, Yu Takahashi, Jordi Bonada, Jordi Janer, Ricard Marxer
  • Publication number: 20110211711
    Abstract: In a noise suppression apparatus, an index setter sets an exponent K that is a positive value. A factor setter variably sets a suppression factor according to the exponent K. A noise suppressor generates an audio signal from which a noise component is suppressed through noise suppression process of suppressing a Kth power of an amplitude of the noise component at each frequency thereof in a Kth power of an amplitude of the audio signal at each frequency thereof to a degree determined according to the suppression factor set by the factor setting part. Preferably, the index setter sets the exponent K to a value less than 0.1.
    Type: Application
    Filed: February 25, 2011
    Publication date: September 1, 2011
    Inventors: Takayuki Inoue, Yu Takahashi, Hiroshi Saruwatari, Kazunobu Kondo
  • Publication number: 20100296665
    Abstract: A In a noise suppression apparatus, an extractor extracts a noise component from an audio signal. A stationary noise estimator estimates stationary noise included in the noise component. A first noise suppressor removes a spectrum of the stationary noise from a spectrum of the audio signal to an extent determined by a subtraction factor. A non-stationary noise estimator estimates a spectrum of non-stationary noise by subtracting the spectrum of the stationary noise from the spectrum of the noise component. A factor setter generates a filtering factor for emphasizing a target sound component contained in the audio signal from the spectrum of the non-stationary noise. A second noise suppressor performs a filtering process using the filtering factor on the audio signal after processing of the first noise suppressor.
    Type: Application
    Filed: May 18, 2010
    Publication date: November 25, 2010
    Applicants: Nara Institute of Science and Technology National University Corporation, Yamaha Corporation
    Inventors: Yohei ISHIKAWA, Yu Takahashi, Hiroshi Saruwatari, Kazunobu Kondo